GENpadsynth
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## GENpadsynth

"padsynth" — Generate a sample table using the padsynth algorithm.

## Description

Creates an ftable for use in an oscillator with values creared by the padsynth algorithm.

## DRAFT Syntax

    f # time size "padsynth" fundamentalFrq
        partialBW partial_Scale harmonicStretch hampl1, hampl2, ...

## DRAFT Initialization

size -- number of points in the table. Must be a power of 2 or power-of-2 plus 1 (see f statement).

fundamentalFrq -- fundamental frequency for the generated table.

partialBW -- bandwidth of each partial in cents.

partialScale -- ration that bandwidth inccreases with harmonic number.

harmonicStretchScale -- ratio of stretch of thre overtoes.

hamp1, hamp2, ... -- relative amplitudes of the partials

The table is filled with a sample that can be used in an oscillator

## Examples

Here is an example of the GENpadsynth routine. It uses the files padsynth_gen.csd.

Example 1137. An example of the GENpadsynth routine.

    <CsoundSynthesizer>
    <CsInstruments>
    sr=44100
    ksmps=1
    nchnls=2
    0dbfs=2000

    	gispec_len init 2^18

    	instr 1
        prints "Plain sine for frequency/amplitude/distortion comparison.\n"
    	gi_padsynth_1 ftgenonce 0, 0, gispec_len, 10, 1
        iattack = 0.08
        idecay = 0.1
        isustain = 0.25
        irelease = 0.2
        aenv madsr iattack, idecay, isustain, irelease
        ifreq cpsmidinn p4
        iamp ampdb p5
        ibasefreq = 440 ; can be lower or higher frequency; close to played frequency is said to be best
        ibw_cents = 56.96943 ; width of the peaks, 100 is semitone
    	asig poscil iamp, ifreq, gi_padsynth_1
        asig = aenv * asig
    	aleft, aright pan2 asig, 0.5
    	outs aleft, aright
    	endin

    	instr 2
        prints "PadSynth with sine tone.\n"
        ibasehz = 261.625565
        ;                       p1 p2 p3          p4           p5       p6  p7    p8 p9  p10  p11
    	gi_padsynth_1 ftgenonce 0, 0, gispec_len, "padsynth", ibasehz, p6, 0.0,  1, 1,  1.0, 1
        iattack = 0.08
        idecay = 0.1
        isustain = 0.25
        irelease = 0.2
        aenv madsr iattack, idecay, isustain, irelease
        ifreq cpsmidinn p4
        iamp ampdb p5
    	asig poscil iamp, ifreq*(sr/gispec_len/ibasehz), gi_padsynth_1
        asig = aenv * asig
    	aleft, aright pan2 asig, 0.5
    	outs aleft, aright
    	endin

    	instr 3
        prints "PadSynth with harmonics.\n"
        ibasehz = 261.625565
        ;                       p1 p2 p3          p4           p5       p6  p7 p8 p9  p10  p11
    	gi_padsynth_1 ftgenonce 0, 0, gispec_len, "padsynth", ibasehz, p6, 1, 1, 1,  1, 0.7600046992, 0.6199994683, 0.9399998784, 0.4400023818, 0.0600003302, 0.8499968648, 0.0899999291, 0.8199964762, 0.3199984133, 0.9400014281, 0.3000001907, 0.120003365, 0.1799997687, 0.5200006366, 0.9300042987
        iattack = 0.08
        idecay = 0.1
        isustain = 0.25
        irelease = 0.2
        aenv madsr iattack, idecay, isustain, irelease
        ifreq cpsmidinn p4
        iamp ampdb p5
    	asig poscil iamp, ifreq*(sr/gispec_len/ibasehz), gi_padsynth_1
        asig = aenv * asig
    	aleft, aright pan2 asig, 0.5
    	outs aleft, aright
    	endin

    	instr 4
        prints "PadSynth with inharmonic partials.\n"
        ibasehz = 261.625565
        ;                       p1 p2 p3          p4           p5       p6  p7 p8 p9  p10  p11
    	gi_padsynth_1 ftgenonce 0, 0, gispec_len, "padsynth", ibasehz, p6, 1, 2, 3,  1, 0.7600046992, 0.6199994683, 0.9399998784, 0.4400023818, 0.0600003302, 0.8499968648, 0.0899999291, 0.8199964762, 0.3199984133, 0.9400014281, 0.3000001907, 0.120003365, 0.1799997687, 0.5200006366, 0.9300042987
        iattack = 0.08
        idecay = 0.1
        isustain = 0.25
        irelease = 0.2
        aenv madsr iattack, idecay, isustain, irelease
        ifreq cpsmidinn p4
        iamp ampdb p5
    	asig poscil iamp, ifreq*(sr/gispec_len/ibasehz), gi_padsynth_1
        asig = aenv * asig
    	aleft, aright pan2 asig, 0.5
    	outs aleft, aright
    	endin

    </CsInstruments>
    <CsScore>

    i1  0 2 60.00 60
    i1  + 2 72.00 60
    i1  + 2 84.00 60

    i2  7 2 60.00 60 0.3
    i2  + 2 72.00 60 0.3
    i2  + 2 84.00 60 0.3
    i2  + 2 60.00 60 25
    i2  + 2 72.00 60 25
    i2  + 2 84.00 60 25
    i2  + 2 60.00 60 55
    i2  + 2 72.00 60 55
    i2  + 2 84.00 60 55

    i3 26 2 60.00 60 0.3
    i3  + 2 72.00 60 0.3
    i3  + 2 84.00 60 0.3
    i3  + 2 60.00 60 25
    i3  + 2 72.00 60 25
    i3  + 2 84.00 60 25
    i3  + 2 60.00 60 55
    i3  + 2 72.00 60 55
    i3  + 2 84.00 60 55

    i4 45 2 60.00 60 0.3
    i4  + 2 72.00 60 0.3
    i4  + 2 84.00 60 0.3
    i4  + 2 60.00 60 25
    i4  + 2 72.00 60 25
    i4  + 2 84.00 60 25
    i4  + 2 60.00 60 55
    i4  + 2 72.00 60 55
    i4  + 2 84.00 60 55

    e
    </CsScore>
    </CsoundSynthesizer>

## See Also

More information on Padsynth: www.paulnasca.com/algorithms-created-by-me

## Credits

Written by Michael Gogins

New in version 6.05

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