Changing audio from videos from 44.1 KHz to 32 khz

[Guardian2099]

I'm using a dvd maker to make videos on my pc. Everytime I make a video. The audio is always at 44.1 khz. Now I like to listen to many of my videos alittle loud but not too loud. It seems that you hear what a sound like static or an air conditioning sound the more you turn your volume up. At 32 khz it doesnt sound so bad and you can freely listen to just about anything you want to really loud without the annoying sound. I hope someone actually knows what I'm talking about.

Is there anykind of program out there that will enable me to convert the audio from videos from 44.1khz to 32 khz? I'm using wmv & mpg video formats. Clear and crist audio is what I'm looking for without any kind of disturbance. The best.

[guns1inger]

Changing your frequency down from 44.1 to 32 khz is actually reducing the quality. Perhaps this is hiding the hiss that annoys you. You would be better off using a decent audio editing app such as sound forge or goldwave to reduce the noise but preserve the quality of the audio you want to hear, than reducing the quality of the entire file.

If you are looking for a free option, you could try audacity or wavepad, both of which are free. Try using audacity to clean up the file, and if that fails, reduce the frequency.

You should bear in mind that if, at some point in the future, you want to put this material on DVD, you will have to go to 48khz. The step down to 32 will become very noticable at that time.

[redwudz]

Actually for DVD, it needs to be 48K, 44.1K is normally used for MPEG-1 or VCD format. 32K is just a sampling rate and would result in a non-standard audio rate for DVD or VCD and that could cause problems. But if you really want to try it, most any audio editor can change the sample rate. I use the freeware Audacity. You would have to convert the MPEG audio to WAV format for Audacity.

You can use VirtualDub Mod to save out the MPEG audio as a WAV. You would be better off to leave the sampling rate the same and use Audacity to possibly filter it and adjust the volume and normalize it. That should improve the signal to noise ratio. Then the WAV can be converted to a usable audio format for DVD or MPEG like AC3. You can do that easily with ffmpeggui. When you author the video for DVD, if that is your end product, you add the AC3 back in.

[Guardian2099]

Changing your frequency down from 44.1 to 32 khz is actually reducing the quality. Perhaps this is hiding the hiss that annoys you. You would be better off using a decent audio editing app such as sound forge or goldwave to reduce the noise but preserve the quality of the audio you want to hear, than reducing the quality of the entire file.

If you are looking for a free option, you could try audacity or wavepad, both of which are free. Try using audacity to clean up the file, and if that fails, reduce the frequency.

You should bear in mind that if, at some point in the future, you want to put this material on DVD, you will have to go to 48khz. The step down to 32 will become very noticable at that time.

Yes your right. Its that annoying hissing sound. I absolutley hate it. And I completly forgot that changing it to 32 khz will reduce quality. Which is something that I don't want to do. Also, I'm kinda like a newbie to the program goldwave. I really want to get rid of the hissing sound. What should I do to get rid of it? Theres so many options in that program.

[guns1inger]

For basic hiss, try the EQ function and work at the higher frequencies. It usually occupies a reasonably narrow band and can be removed fairly well while leaving most of the rest intact.

[Guardian2099]

Great. wmv format it says is not supported when I try to save it. Now what? I'm using an un-registered version of goldwave. Is that the reason?

[Guardian2099]

My only options in saving the file are in audio formats using goldwave. I want to apply it to my .wmv file instead of making yet another audio file? Is there another program that will let me enable this?

[redwudz]

SUPER may be able to convert the audio and/or the video to a more usable format. I missed that you were talking about WMV, WMA.

[Guardian2099]

SUPER worked fine. But theres no way option to get rid of the hissing sound that I'm having problems with.

[guns1inger]

If you convert it to, say, Divx, then you can open it in virtualdub, demux the audio, clean it up, then put it back in place of the hissing one.