[pulseaudio-discuss] Biquad LR4 for module-lfe-lp

Alexander E. Patrakov patrakov at gmail.com
Sat Mar 30 20:56:47 PDT 2013

2013/3/30 Justin Chudgar <justin at justinzane.com>:

>> The "unwanted frequencies are discarded" part is what you did wrong.
> I disagree with this analysis for this use-case. If this implementation were
> in remix.c it would make sense. However, it works with fictitious, synthetic,
> duplicated, averaged, generally boooooooogus (can't find quite the right
> adjective) source data. This module does NOT do remixing. Though I would
> prefer this to be done in remix.c, many people have said that it should be in
> a module and I am simply trying to achieve what I want within the guidelines
> laid out by more experienced and smarter pulseaudio community members.

OK. Since there are contradicting requirements put on you by different
people, let there be two modules. One for your use case (discard high
frequencies from the LFE channel, add phase delays to other channels
accordingly), one for my use case (move bass to subwoofer from other
channels). And yes, our use cases both matter, and they differ also by
the selection of the source material. I was talking more with music
DVDs and BluRays in mind, you had CDs.

Still, I reserve the right to review the code.

Alexander E. Patrakov

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