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Topic: Does stereo to 4 channel DSP affect sound quality? (Read 4188 times) previous topic - next topic
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Does stereo to 4 channel DSP affect sound quality?

I'm wondering if the DSP affects the sound quality (on either rear or front channels), or does it just copy the signal without quality loss to the rear?

Does stereo to 4 channel DSP affect sound quality?

Reply #1 –
It directly copies the front channels to the rear.

Does stereo to 4 channel DSP affect sound quality?

Reply #2 –
There are some cards, typically 2 channel only ones, that perform special post-processing on >2 channel audio streams when converting them to a stereo audio stream. Again, a driver issue, but it has adversely affected audio in my experience before.

So, the answer is that there's no audio quality difference in fb2k.

Does stereo to 4 channel DSP affect sound quality?

Reply #3 –
And how about using it with CMSS? Does it collide with it?
"The brightest flame burns quickest..."

Does stereo to 4 channel DSP affect sound quality?

Reply #4 –
Quote
And how about using it with CMSS? Does it collide with it?

I don't know what CMSS is... All I know is any of these pseudo-3d post-processing effects added by soundcard drivers can kick in when down-sampling >2 channel material to 2 channels, and I also know that I don't like that.

Does stereo to 4 channel DSP affect sound quality?

Reply #5 –
I think CMSS is for expanding two-channel material to 5.1.

Does stereo to 4 channel DSP affect sound quality?

Reply #6 –
Quote
And how about using it with CMSS? Does it collide with it?

CMSS is 2->5.1
If you use foobar's 2->4 then it would either really screw with the cmss, or the cmss would not kick in depdnding on how your drivers do the cmss, ie if they are smart and don't cmss things with more then 2 chanels, no problem =)