View Single Post
Old 26th Jul 2020, 3:35 am   #26
TIMTAPE
Octode
 
Join Date: Jul 2006
Location: Perth, Western Australia
Posts: 1,971
Default Re: VHS HiFi - deterioration?

Quote:
Originally Posted by rambo1152 View Post
Quote:
Originally Posted by TIMTAPE View Post
In pro audio production for reissue of older recordings there is sometimes a specialist job called Audio Transfer Engineer.
Perhaps I missed my true vocation

I still have the original VHS tape of a friends 1986 wedding, it was damaged and causing head clogs, and I was asked to copy it.
There was not much I could do about the video quality going down a generation, but the so-called "professional videographer" at the venue was using a JVC over-the-shoulder machine with an azimuth maladjustment, so I adjusted my playback machine to match. The result was the sound was much better on the copy compared to the original, when played back on a correctly adjusted machine.
Yes well done. Of course a good copy from original to digital looks and sounds as good as the original footage (no generation loss) and no more azimuth alignment worries.

This video was transferred from a player different to the original recorder. https://youtu.be/TlGtluiFdtY If azimuth aligned it would probably sound a lot clearer.


Quote:
Originally Posted by rambo1152 View Post
The other thing that people making A-B transfers of linear sound VHS, (and Compact Cassette come to that) don't appreciate, is that a direct connection between line-out and line-in is going to apply yet another dose of AGC dynamic compression to the already compressed sound. Unless your "B" deck has gain adjustments, you need a to attenuate the level, I used to use a 10k pot in a plastic film canister in the lead, so as not to overdrive the AGC action.
True. Overall though, the AGC was probably a good compromise for camcorders because it at least helped keep the quieter sounds above the tape noise while not saturating the tape on the loud sections.

Quote:
Originally Posted by rambo1152 View Post
There were some stereo VHS machines with only linear tracks. Hitachi made one, and the track nearest the edge of the tape suffered more than its companion...
Yes I have a Panasonic AG 7350 with linear stereo as well as HiFi Stereo. Tapes with edge damage can really suffer on the outer track (left channel) especially if the A/C head is worn or not perpendicular to the other tape guides. When everything is right though, it can sound quite reasonable, the main difference from mono being a somewhat higher noise floor.

Last edited by TIMTAPE; 26th Jul 2020 at 4:05 am.
TIMTAPE is online now