Hi,
I'd like to have more information about about frequency analysis in Audacity, about the way Audacity computes specters, the way it computes FFT, windowing... I'd like to know what is the exact treatment chain, from the sound given in the time domain to the specter graph in the frequency domain.
Thanks.
Frequency analysis
Forum rules
If you require help using Audacity, please post on the forum board relevant to your operating system:
Windows
Mac OS X
GNU/Linux and Unix-like
If you require help using Audacity, please post on the forum board relevant to your operating system:
Windows
Mac OS X
GNU/Linux and Unix-like
Re: Frequency analysis
What is your level of expertise?
Are you wanting general information about FFT analysis, or detailed information about the Audacity code?
Are you wanting general information about FFT analysis, or detailed information about the Audacity code?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
Re: Frequency analysis
Hi Steve,
Thanks for your answer. First, it's more about the source code. Which files should I look at ?
Thanks for your answer. First, it's more about the source code. Which files should I look at ?
Re: Frequency analysis
Probably a good place:
/src/Spectrum.cpp
and
/src/FFT.cpp
https://github.com/audacity/audacity/tree/master/src
/src/Spectrum.cpp
and
/src/FFT.cpp
https://github.com/audacity/audacity/tree/master/src
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)