LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #11   Report Post  
Old July 27th 06, 08:52 PM posted to rec.radio.shortwave
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 2
Default VCR sound quality for taping radio broacasts?

VCR Hi-Fi records/reads audio two ways:

The old analog way with the linear audio track on the long side of the tape.
This mode is FM and is backward compatable with non-HiFi recorded tapes.

The HiFi audio mode is Pulse Code Modulation. PCM is used to record audio
with the video head but separate from the video. The video head takes a
swipe across the tape. When it reaches near the bottom, it stops recording
video and starts recording DIGITAL audio using the same head.

During playback, the head listens for video sending it to the screen and
when it reaches the end of a swipe, shifts its attention to audio sending
the digits to a circuit that converts the signal back into stereo sound.

If the DIGITAL audio is not present on the tape the HiFi VCR will use the
old analog FM linear audio track instead.

In the 1980s and 1990s, some people used the Hi-Fi tracks on VHS and BetaMax
VCRs to record audio. This was a stopgap measure while affordable digital
audio was being developed and sounded far better than audio cassettes.

"David" wrote in message
...
On Thu, 27 Jul 2006 11:18:21 -0500, "SeeingEyeDog"
wrote:

If the VCR is of a stereo Hi-Fi vintage than the audio is recorded
digitally. It is fairly close to CD quality. Few people are aware of

this
fact.


FM, not digital.



 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
197 English-language HF Broadcasts audible in NE US (23-NOV-04) Albert P. Belle Isle Shortwave 1 November 28th 04 01:46 PM
Amateur Radio Newsline™ Report 1415 ­ September 24, 2004 Radionews Policy 1 September 24th 04 07:12 PM
Amateur Radio Newsline™ Report 1415 ­ September 24, 2004 Radionews CB 0 September 24th 04 05:55 PM
Amateur Radio Newsline™ Report 1415 ­ September 24, 2004 Radionews Dx 0 September 24th 04 05:52 PM
Amateur Radio Newsline™ Report 1402 ­ June 25, 2004 Radionews Policy 1 June 26th 04 02:07 AM


All times are GMT +1. The time now is 01:48 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017