ADSR Audio Envelope: How to get it?

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Nycholas Maia
Nycholas Maia 2017-2-15
评论： Walter Roberson 2024-8-9
How can I get the ADSR sample points of a audio file...Like:
"Fake" example:
[Amp, SR] = audioread(audio.file);
[a d s r] = get_ADSR(Amp);
% Results: The sample position of the Amp vector:
a = 85 % End of Attack -> Attack start = Amp(0)
d = 300 % End of Decay
s = 2456 % End of Sustain
r = 50000 % End of Release
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Walter Roberson
Walter Roberson 2024-8-9

For questions about GNU Octave, ask in a GNU Octave support resource.

The purpose of Octave is to put Mathworks out of business, so we decline to support it here.

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回答（1 个）

Matthew Novick
Matthew Novick 2017-11-7
Could you please clarify your question? Is 'audio.file' a generic waveform, and you want a function that will automatically characterize the parameters of an ADSR envelope, similar to that in the Wikipedia link below? https://en.wikipedia.org/wiki/Synthesizer#Attack_Decay_Sustain_Release_.28ADSR.29_envelope
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Nycholas Maia
Nycholas Maia 2017-11-9
Yes! I would like to get the ADSR parameters from a generic waveform. The Wikipedia article is correct.
Example: https://en.wikipedia.org/wiki/Synthesizer#/media/File:ADSR_parameter.svg
Is it possible?

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