Reducing hiss noise

[fdonline]

Hi

I would like to know how do i reduce the hiss noise on captured VHS Video?

Clive

[yoda313]

Hello,

You need to extract the audio to a wav file and input it into a audio editor like audacity or a more robust professional package. Many programs have a dehiss option though the results vary from program to program.

Take the cleaned audio file and remux it with the video file. You MAY encounter synch issues. If so check the guides and forum posts here as this has been covered MANY times before

Kevin

[Savant]

You can also try and see if your VCR has audio out settings. Some have a setting for audio out with choices like Linear/Mix/Hi-Fi, and the setting is set to Hi-Fi by default. On non hi-fi tapes I have found I sometimes get more hiss with that setting, but on linear it isn't as bad.

What I have done for some problem tapes that still have hiss is to run the audio out through my tape deck (high end) and apply either Dolby B or Dolby C noise reduction. Dolby B noise reduction on the source audio is a pretty good alternative to ripping the audio and repairing it later. (as noted, sync issues can crop up)

Regards,

Savant

[lordsmurf]

http://www.digitalfaq.com/restoration/audio/faq.htm

[trock]

What I have done for some problem tapes that still have hiss is to run the audio out through my tape deck (high end) and apply either Dolby B or Dolby C noise reduction. Dolby B noise reduction on the source audio is a pretty good alternative to ripping the audio and repairing it later. (as noted, sync issues can crop up)

Dolby B and C are a compression/expansion system for removing the noise created when recording onto cassettes. They work by encoding (compressing) the signal while recording and then decoding (expanding) it on playback. So in order to work properly Dolby B ideally needs to be used on a tape that was originally encoded with Dolby B, same with Dolby C.

[trock]

Btw, even though I have very high-end software noise reduction, there are times when I want to reduce the noise before the capture and for that I use a Roland NS-50 hardware noise reduction box (used in many recording studios due to the excellent job they do). I've seen them on eBay for around $60 (they used to be $250).

[Soopafresh]

http://www.cycleof5th.com/en/products/sefree/index.htm

Free WAV editor with noise reduction +

[NamPla]

http://www.cycleof5th.com/en/products/sefree/index.htm

Free WAV editor with noise reduction +

Ahh new toy! Thanks Soopafresh!

[NamPla]

On closer inspection, the noise reduction in this freeware "SoundEngine" works more like the "hiss reduction" in Audition - something I don't tend to touch. Admirable project tho'....