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more examples in AmpSeg and typos in MFCCs

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nix
Pierre Alexandre Tremblay 7 years ago
parent 9d0f437975
commit 5c2100fa0b
3 changed files with 101 additions and 7 deletions
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100
release-packaging/HelpSource/Classes/FluidAmpSlice.schelp
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@ -78,7 +78,7 @@ code::
//basic tests: highPass sanity
(
{var env, source = SinOsc.ar(320,0,0.5);
env = FluidAmpSlice.ar(source,highPassFreq:2000, outputType:1);
env = FluidAmpSlice.ar(source,highPassFreq:250, outputType:1);
[source, env]
}.plot(0.03);
)
@ -89,11 +89,105 @@ code::
[source.abs, env]
}.plot(0.03);
)
/////////////////////////////
//basic tests: absThresh sanity
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:1000, outputType:0, relThreshOn:-144, relThreshOff: -200);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12);
[source, env]
}.plot(0.05);
}.plot(0.1);
)
//basic tests: absThresh histeresis
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -16);
[source, env]
}.plot(0.1);
)
//basic tests: absThresh min slice
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12, minSliceLength:441);
[source, env]
}.plot(0.1);
)
//basic tests: absThresh min silence
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12, minSilenceLength:441);
[source, env]
}.plot(0.1);
)
//mid tests: absThresh time histeresis on
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12, minLengthAbove:441, outputType:0);
[DelayN.ar(source,0.1,441/44100), env]
}.plot(0.1);
)
//mid tests: absThresh time histeresis off
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12, minLengthBelow:441);
[DelayN.ar(source,0.1,441/44100), env]
}.plot(0.1);
)
//mid tests: absThresh with lookBack
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12,lookBack:441);
[DelayN.ar(source,0.1,441/44100), env]
}.plot(0.1);
)
//mid tests: absThresh with lookAhead
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12,lookAhead:441);
[DelayN.ar(source,0.1,441/44100), env]
}.plot(0.1);
)
//mid tests: absThresh with asymetrical lookBack and lookAhead
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:100, absThreshOn:-12, absThreshOff: -12,lookBack:221, lookAhead:441);
[DelayN.ar(source,0.1,441/44100), env]
}.plot(0.1);
)
//advanced tests: absThresh histeresis, long tail
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:2000, absThreshOn:-12, absThreshOff: -16);
[source, env]
}.plot(0.1);
)
//solution: have to recut with relThresh
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:2000, absThreshOn:-12, absThreshOff: -16, relRampUp:5, relRampDown:200, relThreshOn:-1, relThreshOff:-12);
[source, env]
}.plot(0.1);
)
//beware of double trig
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:2000, absThreshOn:-12, absThreshOff: -16, relRampUp:5, relRampDown:200, relThreshOn:-1, relThreshOff:-1);
[source, env]
}.plot(0.025);
)
//a solution: minSliceLength
(
{var env, source = SinOsc.ar(320,0,LFTri.ar(10).abs);
env = FluidAmpSlice.ar(source,absRampUp:10, absRampDown:2000, absThreshOn:-12, absThreshOff: -16, relRampUp:5, relRampDown:200, relThreshOn:-1, relThreshOff:-1, minSliceLength:441);
[source, env]
}.plot(0.025);
)
//drum slicing, many ways
//load a buffer
b = Buffer.read(s,File.realpath(FluidAmpSlice.class.filenameSymbol).dirname.withTrailingSlash ++ "../AudioFiles/Nicol-LoopE-M.wav");
(
{var env, source = PlayBuf.ar(1,b);
env = FluidAmpSlice.ar(source,absRampUp:2205, absRampDown:2205, absThreshOn:-70, absThreshOff: -80, relRampUp:5, relRampDown:441, relThreshOn:5, relThreshOff:4, minSliceLength:441, outputType:0);
[source, env]
}.plot(1,maxval:[1,10],separately:true);
)
::

2
release-packaging/HelpSource/Classes/FluidBufMFCC.schelp
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@ -4,7 +4,7 @@ CATEGORIES:: Libraries>FluidDecomposition
RELATED:: Guides/FluCoMa, Guides/FluidDecomposition, Classes/FluidBufMelBands
DESCRIPTION::
This class implements a classic spectral descriptor, the Mel-Frequency Cepstral Coefficients (https://en.wikipedia.org/wiki/Mel-frequency_cepstrum). The input is first decomposed in STRONG::numBands:: perceptually space bands, as in LINK::Classes/FluidMelBands::. It is then analysed in STRONG::numCoefs:: number of cepstral coefficients. It has the avantage to be amplitude invarient, except for the first coefficient. It is part of the Fluid Decomposition Toolkit of the FluCoMa project.FOOTNOTE:: This was made possible thanks to the FluCoMa project ( http://www.flucoma.org/ ) funded by the European Research Council ( https://erc.europa.eu/ ) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899).::
This class implements a classic spectral descriptor, the Mel-Frequency Cepstral Coefficients (https://en.wikipedia.org/wiki/Mel-frequency_cepstrum). The input is first filtered in to STRONG::numBands:: perceptually-spaced bands, as in LINK::Classes/FluidMelBands::. It is then analysed into STRONG::numCoefs:: number of cepstral coefficients. It has the avantage of being amplitude invarient, except for the first coefficient. It is part of the Fluid Decomposition Toolkit of the FluCoMa project.FOOTNOTE:: This was made possible thanks to the FluCoMa project ( http://www.flucoma.org/ ) funded by the European Research Council ( https://erc.europa.eu/ ) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899).::
The process will return a single multichannel buffer of STRONG::numCoefs:: per input channel. Each frame represents a value, which is every hopSize.

2
release-packaging/HelpSource/Classes/FluidMFCC.schelp
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@ -4,7 +4,7 @@ CATEGORIES:: Libraries>FluidDecomposition
RELATED:: Guides/FluCoMa, Guides/FluidDecomposition, Classes/FluidMelBands
DESCRIPTION::
This class implements a classic spectral descriptor, the Mel-Frequency Cepstral Coefficients (https://en.wikipedia.org/wiki/Mel-frequency_cepstrum). The input is first decomposed in STRONG::numBands:: perceptually space bands, as in LINK::Classes/FluidMelBands::. It is then analysed in STRONG::numCoefs:: number of cepstral coefficients. It has the avantage to be amplitude invarient, except for the first coefficient. It is part of the Fluid Decomposition Toolkit of the FluCoMa project.FOOTNOTE:: This was made possible thanks to the FluCoMa project ( http://www.flucoma.org/ ) funded by the European Research Council ( https://erc.europa.eu/ ) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899).::
This class implements a classic spectral descriptor, the Mel-Frequency Cepstral Coefficients (https://en.wikipedia.org/wiki/Mel-frequency_cepstrum). The input is first filtered in to STRONG::numBands:: perceptually-spaced bands, as in LINK::Classes/FluidMelBands::. It is then analysed into STRONG::numCoefs:: number of cepstral coefficients. It has the avantage of being amplitude invarient, except for the first coefficient. It is part of the Fluid Decomposition Toolkit of the FluCoMa project.FOOTNOTE:: This was made possible thanks to the FluCoMa project ( http://www.flucoma.org/ ) funded by the European Research Council ( https://erc.europa.eu/ ) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899).::
The process will return a multichannel control steam of STRONG::maxNumCoefs::, which will be repeated if no change happens within the algorythm, i.e. when the hopSize is larger than the server's kr period.

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