Csound.Tab

Creating Function Tables (Buffers)

Documentation

If you are not familliar with Csound's conventions you are pobably not aware of the fact that for efficiency reasons Csound requires that table size is equal to power of 2 or power of two plus one which stands for guard point (you do need guard point if your intention is to read the table once but you don't need the guard point if you read the table in many cycles, then the guard point is the the first point of your table).

data Tab :: *

Tables (or arrays)

Instances

IfB Tab

Methods

ifB :: (* ~ bool) (BooleanOf Tab) => bool -> Tab -> Tab -> Tab

Tuple Tab

Methods

tupleMethods :: TupleMethods Tab

Arg Tab

Val Tab

Methods

fromGE :: GE E -> Tab

toGE :: Tab -> GE E

fromE :: E -> Tab

Default Tab

Methods

def :: Tab

type BooleanOf Tab

type BooleanOf Tab = BoolD

type Snap Tab

type Snap Tab = Tab

noTab :: Tab

The default table. It's rendered to (-1) in the Csound.

Table querries

nsamp :: Tab -> D

nsamp — Returns the number of samples loaded into a stored function table number.

nsamp(x) (init-rate args only)

csound doc: http://www.csounds.com/manual/html/nsamp.html

ftlen :: Tab -> D

Returns a length of the table.

ftsr :: Tab -> D

Returns the sample rate for a table that stores wav files

ftchnls :: Tab -> D

Returns the number of channels for a table that stores wav files

ftcps :: Tab -> D

Returns the base frequency for a table that stores wav files

Table granularity

data TabFi :: *

Table size fidelity (how many points in the table by default).

Instances

Eq TabFi

Methods

(==) :: TabFi -> TabFi -> Bool

(/=) :: TabFi -> TabFi -> Bool

Read TabFi

Methods

readsPrec :: Int -> ReadS TabFi

readList :: ReadS [TabFi]

readPrec :: ReadPrec TabFi

readListPrec :: ReadPrec [TabFi]

Show TabFi

Methods

showsPrec :: Int -> TabFi -> ShowS

show :: TabFi -> String

showList :: [TabFi] -> ShowS

Default TabFi

Methods

def :: TabFi

fineFi :: Int -> [(Int, Int)] -> [(String, Int)] -> TabFi

Sets different table size for different GEN-routines.

fineFi n ps

where

• n is the default value for table size (size is a n power of 2) for all gen routines that are not listed in the next argument ps.
• ps is a list of pairs (genRoutineId, tableSizeDegreeOf2) that sets the given table size for a given GEN-routine.

with this function we can set lower table sizes for tables that are usually used in the envelopes.

coarseFi :: Int -> TabFi

Sets the same table size for all tables.

coarseFi n

where n is a degree of 2. For example, n = 10 sets size to 1024 points for all tables by default.

Fill table with numbers

doubles :: [Double] -> Tab

Table contains all provided values (table is extended to contain all values and to be of the power of 2 or the power of two plus one). (by default it skips normalization).

Create new tables to write/update data

newTab :: D -> SE Tab

Creates a new table. The Tab could be used while the instrument is playing. When the instrument is retriggered the new tab is allocated.

newTab size

newGlobalTab :: Int -> SE Tab

Creates a new global table. It's generated only once. It's persisted between instrument calls.

newGlobalTab identifier size

tabSizeSeconds :: D -> D

Calculates the number of samples needed to store the given amount of seconds. It multiplies the value by the current sample rate.

tabSizePower2 :: D -> D

Calculates the closest power of two value for a given size.

tabSizeSecondsPower2 :: D -> D

Calculates the closest power of two value in samples for a given size in seconds.

Read from files

data WavChn

Constructors

WavLeft

WavRight

WavAll

Instances

Eq WavChn

Methods

(==) :: WavChn -> WavChn -> Bool

(/=) :: WavChn -> WavChn -> Bool

Show WavChn

Methods

showsPrec :: Int -> WavChn -> ShowS

show :: WavChn -> String

showList :: [WavChn] -> ShowS

Default WavChn

Methods

def :: WavChn

data Mp3Chn

Constructors

Mp3Mono

Mp3Stereo

Mp3Left

Mp3Right

Mp3All

Instances

Eq Mp3Chn

Methods

(==) :: Mp3Chn -> Mp3Chn -> Bool

(/=) :: Mp3Chn -> Mp3Chn -> Bool

Show Mp3Chn

Methods

showsPrec :: Int -> Mp3Chn -> ShowS

show :: Mp3Chn -> String

showList :: [Mp3Chn] -> ShowS

Default Mp3Chn

Methods

def :: Mp3Chn

wavs :: String -> Double -> WavChn -> Tab

Loads wav or aiff file to table

wavs fileName skipTime channel

skipTime specifies from what second it should read the file.

with channel argument we can read left, right or both channels.

wavLeft :: String -> Tab

Reads left channel of audio-file

wavRight :: String -> Tab

Reads right channel of audio-file

mp3s :: String -> Double -> Mp3Chn -> Tab

Loads mp3 file to table:

mp3s fileName skipTime format

skipTime specifies from what second it should read the file.

format is: 1 - for mono files, 2 - for stereo files, 3 - for left channel of stereo file, 4 for right channel of stereo file

mp3Left :: String -> Tab

Reads left channel of mp3-file

mp3Right :: String -> Tab

Reads right channel of mp3-file

mp3m :: String -> Tab

Reads mono of mp3-file

readNumFile :: String -> Tab

Reads numbers from file (GEN23)

csound doc: http://www.csounds.com/manual/html/GEN23.html

readTrajectoryFile :: String -> Tab

Reads trajectory from file (GEN28)

csound doc: http://www.csounds.com/manual/html/GEN28.html

readPvocex :: String -> Int -> Tab

Reads PVOCEX files (GEN43)

csound doc: http://www.csounds.com/manual/html/GEN43.html

readMultichannel :: Int -> [(Tab, Int, Int)] -> Tab

readMultichannel — Creates an interleaved multichannel table from the specified source tables, in the format expected by the ftconv opcode (GEN52).

f # time size 52 nchannels fsrc1 offset1 srcchnls1 [fsrc2 offset2 srcchnls2 ... fsrcN offsetN srcchnlsN]

csound doc: http://www.csounds.com/manual/html/GEN52.html

(In)Harmonic series

type PartialStrength = Double

type PartialNumber = Double

type PartialPhase = Double

type PartialDC = Double

sines :: [PartialStrength] -> Tab

Series of harmonic partials:

sine = sines [1]

saw = sines $ fmap (1 / ) [1 .. 10]

square = sines $ fmap (1 / ) [1, 3 .. 11]

triangle = sines $ zipWith (\a b -> a / (b ** 2)) (cycle [1, -1]) [1, 3 .. 11]

sines3 :: [(PartialNumber, PartialStrength, PartialPhase)] -> Tab

Specifies series of possibly inharmonic partials.

sines2 :: [(PartialNumber, PartialStrength)] -> Tab

Just like sines3 but phases are set to zero.

sines1 :: [PartialNumber] -> Tab

Just like sines2 but partial strength is set to one.

sines4 :: [(PartialNumber, PartialStrength, PartialPhase, PartialDC)] -> Tab

Specifies series of possibly inharmonic partials with direct current.

buzzes :: Double -> [Double] -> Tab

Generates values similar to the opcode buzz.

buzzes numberOfHarmonics [lowestHarmonic, coefficientOfAttenuation]

With buzzes n [l, r] you get n harmonics from l that are attenuated by the factor of r on each step.

bwSines :: [Double] -> Double -> Tab

Sines with bandwidth (simplified padsynth generator)

bwSines harmonics bandwidth

bwOddSines :: [Double] -> Double -> Tab

Sines with bandwidth (simplified padsynth generator). Only odd harmonics are present

bwOddSines harmonics bandwidth

mixOnTab :: Tab -> [(PartialNumber, PartialStrength, PartialPhase)] -> Tab

It's just like sines3 but inplace of pure sinewave it uses supplied in the first argument shape.

mixOnTab srcTable [(partialNumber, partialStrength, partialPahse)]

phahse is in range [0, 1]

mixTabs :: [(Tab, PartialNumber, PartialStrength, PartialPhase)] -> Tab

It's like mixOnTab but it's more generic since we can mix not only one shape. But we can specify shape for each harmonic.

tabSines1 :: Tab -> Double -> Double -> Maybe Double -> Tab

Csound's GEN33 — Generate composite waveforms by mixing simple sinusoids.

tabSines1 srcTab nh scl [fmode]

Csound docs: http://www.csounds.com/manual/html/GEN33.html

tabSines2 :: Tab -> Double -> Double -> Maybe Double -> Tab

Csound's GEN34 — Generate composite waveforms by mixing simple sinusoids.

tabSines2 srcTab nh scl [fmode]

Csound docs: http://www.csounds.com/manual/html/GEN3.html

Wavelets

waveletTab :: Tab -> Int -> Tab

"wave" — Generates a compactly supported wavelet function.

waveletTab srcTab seq

Csound docs: http://www.csounds.com/manual/html/GENwave.html

rescaleWaveletTab :: Tab -> Int -> Tab

"wave" — Generates a compactly supported wavelet function. The result table is rescaled.

waveletTab srcTab seq

Csound docs: http://www.csounds.com/manual/html/GENwave.html

Special cases

sine :: Tab

Table for pure sine wave.

cosine :: Tab

Table for pure cosine wave.

sigmoid :: Tab

Table for sigmoid wave.

sigmoidRise :: Tab

Table for sigmoid rise wave.

sigmoidFall :: Tab

Table for sigmoid fall wave.

tanhSigmoid :: Double -> Tab

Creates tanh sigmoid. The argument is the radius of teh sigmoid.

triTab :: Tab

Linear segments that form a singl cycle of triangle wave.

sawTab :: Tab

Linear segments that form a single cycle of sawtooth wave.

sqrTab :: Tab

Linear segments that form a single cycle of square wave.

pwTab :: Double -> Tab

Pulse-width wave formed with linear segments. Duty cycle rages from 0 to 1. 0.5 is a square wave.

tanhTab :: (Double, Double) -> Tab

Tab with tanh from the given interval.

tanhTab (start, end)

rescaleTanhTab :: (Double, Double) -> Tab

Tab with tanh from the given interval. The table is rescaled.

rescaleTanhTab (start, end)

expTab :: (Double, Double) -> Tab

Tab with exponential from the given interval.

expTab (start, end)

rescaleExpTab :: (Double, Double) -> Tab

Tab with exponential from the given interval. The table is rescaled.

rescaleExpTab (start, end)

soneTab :: (Double, Double) -> Double -> Tab

Tab with sone from the given interval.

soneTab (start, end) equalpoint

• start, end -- first and last value to be stored. The points stored are uniformly spaced between these to the table size.
• equalpoint -- the point on the curve when the input and output values are equal.

rescaleSoneTab :: (Double, Double) -> Double -> Tab

Tab with sone from the given interval.

soneTab (start, end) equalpoint

• start, end -- first and last value to be stored. The points stored are uniformly spaced between these to the table size.
• equalpoint -- the point on the curve when the input and output values are equal.

fareyTab :: Int -> Int -> Tab

"farey" — Fills a table with the Farey Sequence Fn of the integer n.

see details in Csound doc: http://www.csounds.com/manual/html/GENfarey.html

Notice that the arguments are reversed (in the haskell mindset)

fareyTab mode num

num -- the integer n for generating Farey Sequence Fn

mode -- integer to trigger a specific output to be written into the table:

• 0 -- outputs floating point numbers representing the elements of Fn.
• 1 -- outputs delta values of successive elements of Fn, useful for generating note durations for example.
• 2 -- outputs only the denominators of the integer ratios, useful for indexing other tables or instruments for example.
• 3 -- same as mode 2 but with normalised output.
• 4 -- same as mode 0 but with 1 added to each number, useful for generating tables for tuning opcodes, for example cps2pch.

Interpolants

All funtions have the same shape of arguments:

fun [a, n1, b, n2, c, ...]

where

• a, b, c .. - are ordinate values
• n1, n2 .. - are lengths of the segments relative to the total number of the points in the table

Csounders, Heads up! all segment lengths are relative to the total sum of the segments. You don't need to make the sum equal to the number of points in the table. Segment's lengths will be resized automatically. For example if we want to define a curve that rises to 1 over 25% of the table and then falls down to zero we can define it like this:

lins [0, 0.25, 1, 0.75, 0] 

or

lins [0, 25, 1, 75, 0]

or

lins [0, 1, 1, 3, 0]

all these expressions are equivalent.

consts :: [Double] -> Tab

Constant segments (sample and hold).

consts [a, n1, b, n2, c, ...]

where

• a, b, c .. - are ordinate values
• n1, n2, ... are lengths of the segments relative to the total number of the points in the table

lins :: [Double] -> Tab

Segments of straight lines.

lins [a, n1, b, n2, c, ...]

where

• a, b, c .. - are ordinate values
• n1, n2, ... are lengths of the segments relative to the total number of the points in the table

cubes :: [Double] -> Tab

Segments of cubic polynomials.

cubes [a, n1, b, n2, c, ...]

where

• a, b, c .. - are ordinate values
• n1, n2, ... are lengths of the segments relative to the total number of the points in the table

exps :: [Double] -> Tab

Segments of the exponential curves.

exps [a, n1, b, n2, c, ...]

where

• a, b, c, ... are ordinate values
• n1, n2, ... are lengths of the segments relative to the total number of the points in the table

splines :: [Double] -> Tab

Cubic spline curve.

splines [a, n1, b, n2, c, ...]

where

• a, b, c .. - are ordinate values
• n1, n2, ... are lengths of the segments relative to the total number of the points in the table

startEnds :: [Double] -> Tab

Creates a table from a starting value to an ending value.

startEnds [val1, dur1, type1, val2, dur2, type2, val3, ... typeX, valN]

• val1, val2 ... -- end points of the segments
• dur1, dur2 ... -- durations of the segments
• type1, type2 ... -- if 0, a straight line is produced. If non-zero, then it creates the following curve, for dur steps:

beg + (end - beg) * (1 - exp( i*type)) / (1 - exp(type * dur))

• beg, end - end points of the segment
• dur - duration of the segment

tabseg :: [(Tab, PartialStrength, Double)] -> Tab

tabseg -- Writes composite waveforms made up of pre-existing waveforms.

tabseg [(tab, amplitude, duration)]

Csound GEN18: http://www.csounds.com/manual/html/GEN18.html

Butnotice the difference with Csound we specify start and finish of writing but here we only specify the relative length of segments. Segments are arranged so that the start f next segment comes right after the end of the prev segment.

bpLins :: [Double] -> Tab

Linear segments in breakpoint fashion:

bpLins [x1, y1, x2, y2, ..., xN, yN]

csound docs: http://www.csounds.com/manual/html/GEN27.html

All x1, x2, .. should belong to the interval [0, 1]. The actual values are rescaled to fit the table size.

bpExps :: [Double] -> Tab

Exponential segments in breakpoint fashion:

bpExps [x1, y1, x2, y2, ..., xN, yN]

csound docs: http://www.csounds.com/manual/html/GEN25.html

All x1, x2, .. should belong to the interval [0, 1]. The actual values are rescaled to fit the table size.

Equally spaced interpolants

econsts :: [Double] -> Tab

Equally spaced constant segments.

econsts [a, b, c, ...] 

is the same as

consts [a, 1, b, 1, c, ...]

elins :: [Double] -> Tab

Equally spaced segments of straight lines.

elins [a, b, c, ...] 

is the same as

lins [a, 1, b, 1, c, ...]

ecubes :: [Double] -> Tab

Equally spaced segments of cubic polynomials.

ecubes [a, b, c, ...] 

is the same as

cubes [a, 1, b, 1, c, ...]

eexps :: [Double] -> Tab

Equally spaced segments of exponential curves.

eexps [a, b, c, ...] 

is the same as

exps [a, 1, b, 1, c, ...]

esplines :: [Double] -> Tab

Equally spaced spline curve.

esplines [a, b, c, ...] 

is the same as

splines [a, 1, b, 1, c, ...]

estartEnds :: [Double] -> Tab

Equally spaced interpolation for the function startEnds

estartEnds [val1, type1, val2, typ2, ...]

is the same as

estartEnds [val1, 1, type1, val2, 1, type2, ...]

etabseg :: [(Tab, PartialStrength)] -> Tab

Polynomials

polys :: Double -> Double -> [Double] -> Tab

Polynomials.

polys xl xr [c0, c1, c2, ..]

where

• xl, xr - left and right values of the interval over wich polynomial is defined
• [c0, c1, c2, ...] -- coefficients of the polynomial

c0 + c1 * x + c2 * x * x + ...

chebs1 :: Double -> Double -> [Double] -> Tab

Chebyshev polynomials of the first kind.

polys xl xr [h0, h1, h2, ..]

where

• xl, xr - left and right values of the interval over wich polynomial is defined
• [h0, h1, h2, ...] -- relative strength of the partials

chebs2 :: Double -> Double -> [Double] -> Tab

Chebyshev polynomials of the second kind.

polys xl xr [h0, h1, h2, ..]

where

• xl, xr - left and right values of the interval over wich polynomial is defined
• [h0, h1, h2, ...] -- relative strength of the partials

bessels :: Double -> Tab

Modified Bessel function of the second kind, order 0 (for amplitude modulated FM).

bessels xint

the function is defined within the interval [0, xint].

Random values

Distributions

uniDist :: Tab

Uniform (positive numbers only)

linDist :: Tab

Linear (positive numbers only)

triDist :: Tab

Triangular (positive and negative numbers)

expDist :: Tab

Exponential (positive numbers only)

biexpDist :: Tab

Biexponential (positive and negative numbers)

gaussDist :: Tab

Gaussian (positive and negative numbers)

cauchyDist :: Tab

Cauchy (positive and negative numbers)

pcauchyDist :: Tab

Positive Cauchy (positive numbers only)

betaDist :: Double -> Double -> Tab

Beta (positive numbers only)

betaDist alpha beta

• alpha -- alpha value. If kalpha is smaller than one, smaller values favor values near 0.
• beta -- beta value. If kbeta is smaller than one, smaller values favor values near krange.

weibullDist :: Double -> Tab

Weibull (positive numbers only)

• tau -- if greater than one, numbers near ksigma are favored. If smaller than one, small values are favored. If t equals 1, the distribution is exponential. Outputs only positive numbers.

poissonDist :: Tab

Poisson (positive numbers only)

tabDist :: Tab -> Tab

Generates a random distribution using a distribution histogram (GEN40).

Csound docs: http://www.csounds.com/manual/html/GEN40.html

Distributions with levels

uniDist' :: Double -> Tab

linDist' :: Double -> Tab

triDist' :: Double -> Tab

expDist' :: Double -> Tab

biexpDist' :: Double -> Tab

gaussDist' :: Double -> Tab

cauchyDist' :: Double -> Tab

pcauchyDist' :: Double -> Tab

betaDist' :: Double -> Double -> Double -> Tab

weibullDist' :: Double -> Double -> Tab

poissonDist' :: Double -> Tab

Rand values and ranges

randDist :: [Double] -> Tab

randDist — Generates a random list of numerical pairs (GEN41).

randDist  [value1, prob1, value2, prob2, value3, prob3 ... valueN, probN]

The first number of each pair is a value, and the second is the probability of that value to be chosen by a random algorithm. Even if any number can be assigned to the probability element of each pair, it is suggested to give it a percent value, in order to make it clearer for the user.

This subroutine is designed to be used together with duserrnd and urd opcodes (see duserrnd for more information).

rangeDist :: [Double] -> Tab

rangeDist — Generates a random distribution of discrete ranges of values (GEN42).

The first number of each group is a the minimum value of the range, the second is the maximum value and the third is the probability of that an element belonging to that range of values can be chosen by a random algorithm. Probabilities for a range should be a fraction of 1, and the sum of the probabilities for all the ranges should total 1.0.

This subroutine is designed to be used together with duserrnd and urd opcodes (see duserrnd for more information). Since both duserrnd and urd do not use any interpolation, it is suggested to give a size reasonably big.

Windows

winHamming :: Tab

The Hamming window. The peak equals to 1.

winHanning :: Tab

The Hanning window. The peak equals to 1.

winBartlett :: Tab

The Bartlett window. The peak equals to 1.

winBlackman :: Tab

The Blackman window. The peak equals to 1.

winHarris :: Tab

The Harris window. The peak equals to 1.

winGauss :: Double -> Tab

This creates a function that contains a Gaussian window with a maximum value of 1. The extra argument specifies how broad the window is, as the standard deviation of the curve; in this example the s.d. is 2. The default value is 1.

winGauss 2

winKaiser :: Double -> Tab

This creates a function that contains a Kaiser window with a maximum value of 1. The extra argument specifies how "open" the window is, for example a value of 0 results in a rectangular window and a value of 10 in a Hamming like window.

winKaiser openness

winRectangle :: Tab

The Rectangle window. The peak equals to 1.

winSync :: Tab

The Sync window. The peak equals to 1.

Padsynth

padsynth :: PadsynthSpec -> Tab

Creates tables for the padsynth algorithm (described at http://www.paulnasca.com/algorithms-created-by-me). The table size should be very big the default is 18 power of 2.

csound docs: http://csound.github.io/docs/manual/GENpadsynth.html

data PadsynthSpec

Padsynth parameters.

see for details: http://csound.github.io/docs/manual/GENpadsynth.html

Constructors

PadsynthSpec

Fields

• padsynthFundamental :: Double
• padsynthBandwidth :: Double
• padsynthPartialScale :: Double
• padsynthHarmonicStretch :: Double
• padsynthShape :: PadsynthShape
• padsynthShapeParameter :: Double
• padsynthHarmonics :: [Double]

Instances

Eq PadsynthSpec

Methods

(==) :: PadsynthSpec -> PadsynthSpec -> Bool

(/=) :: PadsynthSpec -> PadsynthSpec -> Bool

Show PadsynthSpec

Methods

showsPrec :: Int -> PadsynthSpec -> ShowS

show :: PadsynthSpec -> String

showList :: [PadsynthSpec] -> ShowS

data PadsynthShape

Constructors

GaussShape

SquareShape

ExpShape

Instances

Enum PadsynthShape

Methods

succ :: PadsynthShape -> PadsynthShape

pred :: PadsynthShape -> PadsynthShape

toEnum :: Int -> PadsynthShape

fromEnum :: PadsynthShape -> Int

enumFrom :: PadsynthShape -> [PadsynthShape]

enumFromThen :: PadsynthShape -> PadsynthShape -> [PadsynthShape]

enumFromTo :: PadsynthShape -> PadsynthShape -> [PadsynthShape]

enumFromThenTo :: PadsynthShape -> PadsynthShape -> PadsynthShape -> [PadsynthShape]

Eq PadsynthShape

Methods

(==) :: PadsynthShape -> PadsynthShape -> Bool

(/=) :: PadsynthShape -> PadsynthShape -> Bool

Ord PadsynthShape

Methods

compare :: PadsynthShape -> PadsynthShape -> Ordering

(<) :: PadsynthShape -> PadsynthShape -> Bool

(<=) :: PadsynthShape -> PadsynthShape -> Bool

(>) :: PadsynthShape -> PadsynthShape -> Bool

(>=) :: PadsynthShape -> PadsynthShape -> Bool

max :: PadsynthShape -> PadsynthShape -> PadsynthShape

min :: PadsynthShape -> PadsynthShape -> PadsynthShape

Show PadsynthShape

Methods

showsPrec :: Int -> PadsynthShape -> ShowS

show :: PadsynthShape -> String

showList :: [PadsynthShape] -> ShowS

defPadsynthSpec :: Double -> [Double] -> PadsynthSpec

Specs for padsynth algorithm:

defPadsynthSpec partialBandwidth harmonics

• partialBandwidth -- bandwidth of the first partial.
• harmonics -- the list of amplitudes for harmonics.

Harmonics

tabHarmonics :: Tab -> Double -> Double -> Maybe Double -> Maybe Double -> Tab

Generates harmonic partials by analyzing an existing table.

tabHarmonics src minh maxh [ref_sr] [interp]

• src -- source ftable. It should be primitive ie constructed not with "ftgen" family of opcodes.
• minh -- lowest harmonic number
• maxh -- maxh -- highest harmonic number
• ref_sr (optional) -- maxh is scaled by (sr / ref_sr). The default value of ref_sr is sr. If ref_sr is zero or negative, it is now ignored.
• interp (optional) -- if non-zero, allows changing the amplitude of the lowest and highest harmonic partial depending on the fractional part of minh and maxh. For example, if maxh is 11.3 then the 12th harmonic partial is added with 0.3 amplitude. This parameter is zero by default.

GEN30 for Csound: http://www.csounds.com/manual/html/GEN30.html

Normalize table

normTab :: NormTabSpec -> Tab -> Tab

Normalizing table

Csound GEN04: http://www.csounds.com/manual/html/GEN04.html

data NormTabSpec

Constructors

ScanLeftToRight

ScanFromMiddle

scaleTab :: (Double, Double) -> Tab -> Tab

Creates a new table wich contains all values from the source table rescaled to the given interval.

scaleTab (minValue, maxValue) sourceTab

Low level Csound definition.

gen :: Int -> [Double] -> Tab

Creates a table of doubles (It's f-table in Csound). Arguments are:

• identificator of the GEN routine
• GEN routine arguments

All tables are created at 0 and memory is never released.

Modify tables

skipNorm :: Tab -> Tab

Skips normalization (sets table size to negative value)

forceNorm :: Tab -> Tab

Force normalization (sets table size to positive value). Might be useful to restore normalization for table doubles.

setSize :: Int -> Tab -> Tab

Sets an absolute size value. As you can do it in the Csound files.

setDegree :: Int -> Tab -> Tab

Sets the relative size value. You can set the base value in the options (see tabResolution at CsdOptions, with tabResolution you can easily change table sizes for all your tables). Here zero means the base value. 1 is the base value multiplied by 2, 2 is the base value multiplied by 4 and so on. Negative values mean division by the specified degree.

guardPoint :: Tab -> Tab

Adds guard point to the table size (details of the interpolation schemes: you do need guard point if your intention is to read the table once but you don't need the guard point if you read table in many cycles, the guard point is the the first point of your table).

gp :: Tab -> Tab

Shortcut for guardPoint.

Handy shortcuts

handy shortcuts for the function setDegree.

lllofi :: Tab -> Tab

Sets degrees from -3 to 3.

llofi :: Tab -> Tab

Sets degrees from -3 to 3.

lofi :: Tab -> Tab

Sets degrees from -3 to 3.

midfi :: Tab -> Tab

Sets degrees from -3 to 3.

hifi :: Tab -> Tab

Sets degrees from -3 to 3.

hhifi :: Tab -> Tab

Sets degrees from -3 to 3.

hhhifi :: Tab -> Tab

Sets degrees from -3 to 3.

Identifiers for GEN-routines

Low level Csound integer identifiers for tables. These names can be used in the function fineFi

idWavs :: Int

idMp3s :: Int

idDoubles :: Int

idSines :: Int

idSines3 :: Int

idSines2 :: Int

idPartials :: Int

idSines4 :: Int

idBuzzes :: Int

idConsts :: Int

idLins :: Int

idCubes :: Int

idExps :: Int

idSplines :: Int

idStartEnds :: Int

idPolys :: Int

idChebs1 :: Int

idChebs2 :: Int

idBessels :: Int

idWins :: Int

idPadsynth :: String

idTanh :: String

idExp :: String

idSone :: String

idFarey :: String

idWave :: String

Tabular opcodes

sec2rel :: Tab -> Sig -> Sig

Transforms phasor that is defined in seconds to relative phasor that ranges in 0 to 1.

Tables of tables

data TabList :: *

Container list of tables

Instances

Tuple TabList

Methods

tupleMethods :: TupleMethods TabList

Arg TabList

Val TabList

Methods

fromGE :: GE E -> TabList

toGE :: TabList -> GE E

fromE :: E -> TabList

Default TabList

Methods

def :: TabList

tabList :: [Tab] -> TabList

fromTabList :: TabList -> Sig -> Tab

fromTabListD :: TabList -> D -> Tab

Mic table functions

tablewa :: Tab -> Sig -> Sig -> SE Sig

Writes tables in sequential locations.

This opcode writes to a table in sequential locations to and from an a-rate variable. Some thought is required before using it. It has at least two major, and quite different, applications which are discussed below.

kstart tablewa kfn, asig, koff

csound docs: http://www.csounds.com/manual/html/tablewa.html

tablew :: Sig -> Sig -> Tab -> SE ()

tablew — Change the contents of existing function tables.

This opcode operates on existing function tables, changing their contents. tablew is for writing at k- or at a-rates, with the table number being specified at init time. Using tablew with i-rate signal and index values is allowed, but the specified data will always be written to the function table at k-rate, not during the initialization pass. The valid combinations of variable types are shown by the first letter of the variable names.

tablew asig, andx, ifn [, ixmode] [, ixoff] [, iwgmode]
tablew isig, indx, ifn [, ixmode] [, ixoff] [, iwgmode]
tablew ksig, kndx, ifn [, ixmode] [, ixoff] [, iwgmode]

csound doc: http://www.csounds.com/manual/html/tablew.html

readTab :: Sig -> Tab -> SE Sig

Notice that this function is the same as tab, but it wraps the output in the SE-monad. So you can use the tab if your table is read-only and you can use readTab if you want to update the table and the order of read/write operation is important.

Fast table opcodes.

Fast table opcodes. Faster than table and tablew because don't allow wrap-around and limit and don't check index validity. Have been implemented in order to provide fast access to arrays. Support non-power of two tables (can be generated by any GEN function by giving a negative length value).

kr  tab  kndx, ifn[, ixmode]
ar  tab  xndx, ifn[, ixmode]

csound doc: http://www.csounds.com/manual/html/tab.html

readTable :: SigOrD a => a -> Tab -> SE a

Notice that this function is the same as table, but it wraps the output in the SE-monad. So you can use the table if your table is read-only and you can use readTable if you want to update the table and the order of read/write operation is important.

Accesses table values by direct indexing.

ares  table  andx, ifn [, ixmode] [, ixoff] [, iwrap]
ires  table  indx, ifn [, ixmode] [, ixoff] [, iwrap]
kres  table  kndx, ifn [, ixmode] [, ixoff] [, iwrap]

csound doc: http://www.csounds.com/manual/html/table.html

readTable3 :: SigOrD a => a -> Tab -> SE a

Notice that this function is the same as tablei, but it wraps the output in the SE-monad. So you can use the tablei if your table is read-only and you can use readTablei if you want to update the table and the order of read/write operation is important.

Accesses table values by direct indexing with cubic interpolation.

ares  table3  andx, ifn [, ixmode] [, ixoff] [, iwrap]
ires  table3  indx, ifn [, ixmode] [, ixoff] [, iwrap]
kres  table3  kndx, ifn [, ixmode] [, ixoff] [, iwrap]

csound doc: http://www.csounds.com/manual/html/table3.html

readTablei :: SigOrD a => a -> Tab -> SE a

Notice that this function is the same as table3, but it wraps the output in the SE-monad. So you can use the table3 if your table is read-only and you can use readTable3 if you want to update the table and the order of read/write operation is important.

Accesses table values by direct indexing with linear interpolation.

ares  tablei  andx, ifn [, ixmode] [, ixoff] [, iwrap]
ires  tablei  indx, ifn [, ixmode] [, ixoff] [, iwrap]
kres  tablei  kndx, ifn [, ixmode] [, ixoff] [, iwrap]

csound doc: http://www.csounds.com/manual/html/tablei.html

Table Reading with Dynamic Selection

tableikt :: Sig -> Tab -> Sig

tableikt — Provides k-rate control over table numbers.

k-rate control over table numbers. Function tables are read with linear interpolation. The standard Csound opcode tablei, when producing a k- or a-rate result, can only use an init-time variable to select the table number. tableikt accepts k-rate control as well as i-time. In all other respects they are similar to the original opcodes.

ares tableikt xndx, kfn [, ixmode] [, ixoff] [, iwrap]
kres tableikt kndx, kfn [, ixmode] [, ixoff] [, iwrap]

csound doc: http://www.csounds.com/manual/html/tableikt.html

tablekt :: Sig -> Tab -> Sig

tablekt — Provides k-rate control over table numbers.

k-rate control over table numbers. Function tables are read with linear interpolation. The standard Csound opcode table when producing a k- or a-rate result, can only use an init-time variable to select the table number. tablekt accepts k-rate control as well as i-time. In all other respects they are similar to the original opcodes.

ares tablekt xndx, kfn [, ixmode] [, ixoff] [, iwrap]
kres tablekt kndx, kfn [, ixmode] [, ixoff] [, iwrap]

csound doc: http://www.csounds.com/manual/html/tablekt.html

tablexkt :: Sig -> Tab -> Sig -> D -> Sig

tablexkt — Reads function tables with linear, cubic, or sinc interpolation.

ares tablexkt xndx, kfn, kwarp, iwsize [, ixmode] [, ixoff] [, iwrap]

csound doc: http://www.csounds.com/manual/html/tablexkt.html

random generators from tables

cuserrnd :: SigOrD a => a -> a -> Tab -> SE a

cuserrnd — Continuous USER-defined-distribution RaNDom generator.

Continuous USER-defined-distribution RaNDom generator.

aout cuserrnd kmin, kmax, ktableNum
iout cuserrnd imin, imax, itableNum
kout cuserrnd kmin, kmax, ktableNum

csound doc: http://www.csounds.com/manual/html/cuserrnd.html

the tab should be done with tabDist, randDist or rangeDist

duserrnd :: SigOrD a => Tab -> SE a

duserrnd — Discrete USER-defined-distribution RaNDom generator.

Discrete USER-defined-distribution RaNDom generator.

aout duserrnd ktableNum
iout duserrnd itableNum
kout duserrnd ktableNum

csound doc: http://www.csounds.com/manual/html/duserrnd.html

the tab should be done with tabDist, randDist or rangeDist

Appendix (original GEN identifiers lookup)

We can find the CE name of the GEN routine by it's integer id.

• GEN01 — wavs, wavLeft, wavRight -- Transfers data from a soundfile into a function table.
• GEN02 — doubles -- Transfers data from immediate pfields into a function table.
• GEN03 — polys -- Generates a stored function table by evaluating a polynomial.
• GEN04 — normTab -- Generates a normalizing function.
• GEN05 — exps -- Constructs functions from segments of exponential curves.
• GEN06 — cubes -- Generates a function comprised of segments of cubic polynomials.
• GEN07 — lins -- Constructs functions from segments of straight lines.
• GEN08 — splines -- Generate a piecewise cubic spline curve.
• GEN09 — sines2, sines3 -- Generate composite waveforms made up of weighted sums of simple sinusoids.
• GEN10 — sines -- Generate composite waveforms made up of weighted sums of simple sinusoids.
• GEN11 — buzzes -- Generates an additive set of cosine partials.
• GEN12 — bessels -- Generates the log of a modified Bessel function of the second kind.
• GEN13 — chebs1 -- Stores a polynomial whose coefficients derive from the Chebyshev polynomials of the first kind.
• GEN14 — chebs2 -- Stores a polynomial whose coefficients derive from Chebyshevs of the second kind.
• GEN15 — (not implemented yet) -- Creates two tables of stored polynomial functions.
• GEN16 — startEnds -- Creates a table from a starting value to an ending value.
• GEN17 — consts -- Creates a step function from given x-y pairs.
• GEN18 — tabseg -- Writes composite waveforms made up of pre-existing waveforms.
• GEN19 — sines4 -- Generate composite waveforms made up of weighted sums of simple sinusoids.
• GEN20 — wins -- Generates functions of different windows.
• GEN21 — dist, uniDist, linDist, triDist, expDist, biexpDist, gaussDist, cauchyDist, pcauchyDist, betaDist, weibullDist, poissonDist -- Generates tables of different random distributions.
• GEN23 — readNumFile -- Reads numeric values from a text file.
• GEN24 — readNumTab -- Reads numeric values from another allocated function-table and rescales them.
• GEN25 — bpExps -- Construct functions from segments of exponential curves in breakpoint fashion.
• GEN27 — bpLins -- Construct functions from segments of straight lines in breakpoint fashion.
• GEN28 — readTrajectoryFile -- Reads a text file which contains a time-tagged trajectory.
• GEN30 — tabHarmonics -- Generates harmonic partials by analyzing an existing table.
• GEN31 — mixOnTab -- Mixes any waveform specified in an existing table.
• GEN32 — mixTabs -- Mixes any waveform, resampled with either FFT or linear interpolation.
• GEN33 — mixSines1 -- Generate composite waveforms by mixing simple sinusoids.
• GEN34 — mixSines2 -- Generate composite waveforms by mixing simple sinusoids.
• GEN40 — tabDist -- Generates a random distribution using a distribution histogram.
• GEN41 — randDist -- Generates a random list of numerical pairs.
• GEN42 — rangeDist Generates a random distribution of discrete ranges of values.
• GEN43 — readPvocex -- Loads a PVOCEX file containing a PV analysis.
• GEN49 — mp3s -- Transfers data from an MP3 soundfile into a function table.
• GEN51 — (see module Csound.Tuning) This subroutine fills a table with a fully customized micro-tuning scale, in the manner of Csound opcodes cpstun, cpstuni and cpstmid.
• GEN52 — readMultichannel -- Creates an interleaved multichannel table from the specified source tables, in the format expected by the ftconv opcode.
• GENtanh — tanhTab, rescaleTanhTab Generate a table with values on the tanh function.
• GENexp — expTab, rescaleExpTab Generate a table with values on the exp function.
• GENsone — soneTab Generate a table with values of the sone function.
• GENquadbezier — (not implemented yet) Generate a table with values from a quadratic Bézier function.
• GENfarey — fareyTab -- Fills a table with the Farey Sequence Fn of the integer n.
• GENwave — waveletTab -- Generates a compactly supported wavelet function.
• GENpadsynth — pdsynth, bwSines Generate a sample table using the padsynth algorithm.