32khz mpeg to 48khz how to ?

[Videodream]

Hello
I have captured some tapes with Premiere pro and they are very large files like 20+ GB buth with great quality. the problem is that they are with 32khz audio. I want to burn a dvd or more from that material. What do I need to do ? do I have to convert to 48 kHz because when I play the material the sound is so slow and horrible. how can I burn the dvd;s with the same quality just with 48 kHz audio ? tried recapturing but I can't make it capture in 48 khz . In the cam it says hat the audio is 16 bit . Can anyone help me please

[jman98]

Yes, you HAVE to convert the audio to 48 KHz to make a DVD. You need an audio program that can convert the audio to 48 KHz. Possible options include:

1) BeSweet GUI should be able to do this, but I would think that the quality would not be as good as possible.
2) Audacity may be able to do this and if so, the quality should be OK.
3) A commercial (non-free) program like CoolEdit should give the best results, but again, programs like CoolEdit aren't free.

32 KHz audio is poor quality to begin with, so even with the best conversion possible it will probably never sound correct. However, the sound should not be slower with a proper conversion.

[themaster1]

32khz for a vhs is ok
Actually the frequency of the Hi-fi audio tracks on a vhs tape is somewhere between 20Hz-20kHz

So 32khz = upsampling

Only cds have a 44khz frequency

If the sound is "horrible" is guess your vhs is in bad condition.

By the way, you can upsamble it to 48Khz since that's what a dvd need

[Videodream]

thanx for the replies guys ... I'll try what you've suggested

[jman98]

Videodream - You may also have hum or hiss in your sources, which won't go away unless you have some audio program that can remove it. Cool Edit can help with this. Audacity might too. BeSweet will NOT help with that.

My experience with 32 KHz audio is that it ALWAYS sounds like crap. I've never heard anything at that frequency that didn't sound bad to me. That's just my opinion.

[MOVIEGEEK]

I would use an encoder to convert the video and audio at the same time that way the audio stays in sync.

[Videodream]

thanks for all your replies. Youve been very helpful. all of you .

thanks again

[2Bdecided]

32khz for a vhs is ok
Actually the frequency of the Hi-fi audio tracks on a vhs tape is somewhere between 20Hz-20kHz

So 32khz = upsampling

A 32kHz sampling rate gives you 16kHz (max) high frequency - insufficient to capture 20kHz.

I wouldn't worry about it with a VHS source - but in future it'll be far easier to capture straight to 48kHz.

Cheers,
David.

[Nelson37]

For a sampling rate converter, try SSRC. By far the best and easiest I have found.

[themaster1]

A 32kHz sampling rate gives you 16kHz (max) high frequency - insufficient to capture 20kHz.

edit:
hmm you seem to be right since the value of the sampling rate = the double of the maximum frequency.

So you divide 32 by 2 & you obtain 16khz as the max frequency.

Thanks for pointing that out

[Midzuki]

Digital audio sampling means, if your sampling frequency if "f",
you cannot capture/record any frequency greater than "f/2".

Just my R$ 2,00

[themaster1]

Too late Midzuki (i have corrected my mistake myself)

[Midzuki]

It's never too late for ing you anyway.