My tests over kmixer effects, Seem to be none... Options

[KikeG]

I've been doing some tests over kmixer effect, both using standard waveout and directsound, connecting my TBSC digital output to my Audiophile digital input, under WinXP (no SP1), and I'm sure that with a single stream at 48 KHz, with the TBSC mixer volume at max, the kmixer doesn't touch a bit of the audio stream, it's sent bit-perfectly to the output of the card. At 44.1 KHz I can't be so conclusive, since the TBSC resamples everything to 48 KHz and I've had some problems to test it the same way, but according to my analog measurements in loopback mode of Audiophile output, there is no trace of signal degradation over the 44.1 KHz played data.

...So it's very possible that this kmixer sounding worse than ASIO or k.streaming is our old friend mr. placebo entering into scene again.

Anyway, I'll do some more tests in the future.

This post has been edited by KikeG: Jan 16 2003, 09:42

[thomaspf]

Could you describe this setup in a bit more detail. How did you generate the 48Khz WAV file how did you record it digitally and how did you compare.

Try this with a 44.1Khz wav file on your M-Audio card and let us know what you find. So, far no one has found a way to get the exact bits you stuff into Directsound or waveOut come out at the other end unmodified.

If you somehow found a way around that problem, that would be great. Please describe in detail how you do it. Good sample files are the DTS encoded material from swedish broadcasting run into a DTS receiver over digital out. If the receiver can decode the DTS signal at the right speed you are there!

This helps a lot with the placebo question. Stereo hiss is very different from a correctly decoded DTS signal.

Cheers

Thomas

This post has been edited by thomaspf: Jan 16 2003, 20:03