DeconvolverNode

[mishushakov]

Describe the feature

Consider adding a DeconvolverNode to subtract (deconvolve) impulse response/filter from a signal

Is there a prototype?
No

Describe the feature in more detail

https://en.wikipedia.org/wiki/Deconvolution

[rtoy]

What is your use-case for this?

[mishushakov]

i want to record an audio when playing a sound and then subtract the sound from the recording to get the reverb/impulse response

[rtoy]

Today's teleconf: We feel this is outside the scope of WebAudio for your use case. WebAudio is about producing audio, and the use case it to obtain a reverb or impulse response.

[mishushakov]

i think generally it fits the purpose of producing audio
the goal of deconvolution is to recreate the signal as it existed before the convolution took place

[rtoy]

Teleconf today: We discussed this again. The general consensus was

• No existing DAWs apparently have this
• The solution generally requires knowledge of the signal and the noise to get the right algorithm.
• Probably can't choose an algorithm that will satisfy everyone. * It seems that you're doing this in an offline manner. This could be done using an OfflineAudioContext with an AudioWorklet. Or just using a WASM implementation of your favorite deconvolution algorithm.

While many things could be added, we felt the use case for a deconvolver node was fairly limited.

We will not pursue this at the current time.

[hoch]

TPAC 2022:
Per the comment above, we suggest to use AudioWorklet and WASM to implement this.