Playback of digital pcm audio from VHS tape

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Uploaded by on Jan 14, 2009

Early playback test of digital sound from the helical video tracks of VHS video tape. Decoded using dsPIC33. More details at:
http://www.myprius.co.za/pcmx2_processor1.htm

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Science & Technology

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Uploader Comments (albertusj)

  • what song was used there?

  • @billthejanitor "Take Back the City" is a song from alternative rock band Snow Patrol's fifth album - Wikipedia

  • Can this be done with video as well?

  • @Celiecinema1 If you mean encoding a digital audio/video stream, then yes I think so. Using a highly efficient data compression scheme such as MPEG4 and a multilevel modulation scheme, it should be possible to make fully digital VHS.

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  • @BlueNeon81 Unfortunately my encoding scheme isn't directly compatible with PCM501ES. If you have a tape that needs to be transferred, I have a friend in Japan that may be able to help....

  • @albertusj Is it possible to send you a VHS PAL encoded with PCM 501 ES? :)

  • @albertusj Is it possible to send you a VHS PAL encoded with PCM 501 ES? :)

  • It should be possible if I use a SVHS deck and perhaps write the digital data direct to tape using biphase mark encoding...ie bypass all the video circuits and write to tape direct. That would require getting tinto the guts of the deck though.

  • Is this 24 bit audio and can you make a multitrack or a Dolby Digital version of this thing?

  • @bruno70 The dropouts are caused by buffer under/overruns caused by mismatched playback clocks I haven't been able to fix yet. Right now my PCM processor isn't compatible with the Sony offerings mostly because I have no 501 encoded material to work on.I have the PCM-F1 specs from books and patents, but no ACTUAL tape to test. Thank you for your interest.

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