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GPD Pocket 4 Speaker DSP: Configuring PipeWire so laptop speakers sound better

(kittenlabs.de)
259 points zdw | 1 comments | 09 Apr 25 18:07 UTC | HN request time: 0s | source
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thrtythreeforty ◴[09 Apr 25 18:19 UTC] No.43635458[source]▶
Impulse response is sort of overkill here. If you design a filter bank in the first place, you can just implement that filter bank much cheaper than doing even an FFT-based convolution. Convolution is useful when you don't know the underlying filter transfer function.
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cycomanic ◴[09 Apr 25 18:39 UTC] No.43635799[source]▶
I'm not sure I understand. How would you apply your FIR filter? Are you suggesting there is a different way than to either do convolution in the time domain or a multiplication in the frequency domain?
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1. manawyrm ◴[10 Apr 25 09:22 UTC] No.43642209[source]▶
REW can generate a set of peaking/shelf equalizer filters, but why would I want to do that instead of just applying the inverse impulse response instead? It's just more work for a less perfect solution/result...