Is it possible to do tv capture with the audio being captured at 32bits 96khz?

[cesm23]

I have trying searching everywhere but i am unable to find a solution for this, every tv capture program i try, the maximum allowed for capturing video and audio in the same file, it's always 16bits and 48khz, now that i have a new soundcard (audigy 2 value) and can capture with more quality (maximum supported is 96khz and 32bits), i would like to know if there is any ACM codec that provides lossless/uncompressed encoding at 96khz in 32bits if possible... i don't mind encoding in PCM format as always, but the current PCM "codec" only supports 16bits 48khz in maximum.

Because like this i have to capture the audio in a separate program, and i really don't like this way, i would like the audio in sync with the video.

[Blue_MiSfit]

What exactly are you trying to capture?

If it's anything off cable, a console, or really anything outside of studio grade equipment (and the Audigy 2 is by no means studio grade), you won't notice a difference from capturing at high sample rate / bit depth. Promise ;)

I don't meant to rain on your parade, it would be a fun little experiment. In fact, try it. Use Audacity or some other freeware app to capture an audio source (with the Audigy2) at 16/48 versus 24/96. If there really is a difference, I stand corrected.

Addressing your question regardless of pitfalls - I don't know... I'm not sure if ACM supports high resolution audio in any form :( I'm sure a professional NLE package like Final Cut Pro, Avid, or Premiere would support this.

~MiSfit

[2Bdecided]

Unless you're capturing a live event, or something like BluRay or DVD-A lossless audio, a sample rate higher than 48kHz is pointless because the source will only have a 48kHz sample rate (at best), and you can't capture what isn't there.

48kHz sampling captures audio signals up to 24kHz. VHS mono doesn't have anything up there (10kHz if you're lucky!), VHS Hi-Fi stereo only has noise up there, and your ears don't do much up there either!

Higher bitdepths are useful to capture a staggeringly low noise flaw and wide dynamic range accurately (pointless for VHS or broadcast), and to allow for many stages of post-processing. You can always process a 16-bit file in 24-bit or greater resolution to avoid accumulating rounding errors at each processing stage, and then convert back at the end if needed.

Cheers,
David.

[cesm23]

Well, this is for me later filtering the audio noise, i have a friend which says it's easier to filter the audio noite when the audio is captured at 32 bits and 96khz... altough i tried capturing it in a external program and infact there wasn't much improvement at all so i guess you guys are right probably the tv audio is only at 48khz anyway. I guess i will continue to capture at 48khz 16 bit mono.

[Gavino]

Higher bitdepths are useful to capture a staggeringly low noise flaw and wide dynamic range accurately
I had trouble understanding this until I tried reading it in an English accent - I assume you mean noise floor. ;)

[2Bdecided]

Well spotted Gavino! My poor spelling!

cesm23, the advantage is theoretical, rather than practical. The only real difference for any noise that has noise is that processing larger files (96k rather than 48k, 32-bit rather than 16-bit) is slower!

btw, you said 48k 16-bit mono - don't you have stereo? I wouldn't throw that away.

Cheers,
David.

[scharfis_brain]

if analogue tv is to be captured
higher sample rates than 32kHz/16bit are useless.

Analogue (RF antenna/cable) transmitted TV commonly is FM audio with a max. frequency of 14.5 kHz.
That's why 32 kHz sampling is fully sufficient.
Go 44.1 or 48 kHz sampling for compatibility, but more sample frequency certainly is just a waste of space.

[Qjimbo]

If you record the audio with your capture card, then the same source with your audigy, I'm willing to bet that any improvement will be down to the better audio processing in the audigy rather than the sample rate itself.