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katspaugh / wavesurfer.js

Audio waveform player
https://wavesurfer.xyz
BSD 3-Clause "New" or "Revised" License
8.78k stars 1.63k forks source link

Applying EQ to file? #2074

Closed keyonchrist closed 3 years ago

keyonchrist commented 4 years ago

Hi I’ve searched everywhere but having trouble implementing the equalizer to a file that is able to be saved to json data instead of just applying it to the audio file. If someone could point me in the right direction if this is even possible I’d be eternally grateful. Thanks

thijstriemstra commented 4 years ago

implementing the equalizer to a file that is able to be saved to json data instead of just applying it to the audio file.

This sounds confusing. You can save the peaks data of a waveform to a json file, do you have this working? After that, what is it that you want to save to json regarding the equalizer?

sundayz commented 4 years ago

Do you mean normalizing json peaks data? https://wavesurfer-js.org/faq/

Under "How to generate waveform data on the server" there is a python script that normalizes peaks saved to json.

If you mean equalizer, then maybe the Web Audio API "audio effects nodes" is what you are looking for? https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API

thijstriemstra commented 3 years ago

no feedback, closing.