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Audio and Video Talk
The Vintage Audio Section
Sharp vertical record players
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<blockquote data-quote="Steerpike" data-source="post: 322860" data-attributes="member: 807"><p>Just from memory - no scientific research or documentation - I would have said Pioneer. I think it was Pioneer who came up with the word "Songfinder", I don't know if it was trade-marked.</p><p></p><p>It isn't really good for the playback heads, so the purist recorders didn't include it on many models.</p><p></p><p>Sharp was - I think - the first to use it on video tape recorders. The early VHS machines fully unlaced the tape for FF and Rew, so there was no possibility to read data off the tape. For that purpose, Sharp recorders had an extra head to read the linear audio during FF and Rewind. They recorded around a 15Hz tone in with the audio, at each recording start or pause-point. On TV sets you never hear that, but with a VTR connected to a good amplifier and speakers, it plays back as some sort of unintended earthquake effect!</p><p></p><p>Then some years later, JVC added the "VHS Index Search System" specification, where index markers were recorded onto the control track, and could be retroactively added or erased from recorded tapes. that required the tape to be in contact with the control track head for all operating modes, which also gave the possibility of a linear counter that worked in all modes.</p></blockquote><p></p>
[QUOTE="Steerpike, post: 322860, member: 807"] Just from memory - no scientific research or documentation - I would have said Pioneer. I think it was Pioneer who came up with the word "Songfinder", I don't know if it was trade-marked. It isn't really good for the playback heads, so the purist recorders didn't include it on many models. Sharp was - I think - the first to use it on video tape recorders. The early VHS machines fully unlaced the tape for FF and Rew, so there was no possibility to read data off the tape. For that purpose, Sharp recorders had an extra head to read the linear audio during FF and Rewind. They recorded around a 15Hz tone in with the audio, at each recording start or pause-point. On TV sets you never hear that, but with a VTR connected to a good amplifier and speakers, it plays back as some sort of unintended earthquake effect! Then some years later, JVC added the "VHS Index Search System" specification, where index markers were recorded onto the control track, and could be retroactively added or erased from recorded tapes. that required the tape to be in contact with the control track head for all operating modes, which also gave the possibility of a linear counter that worked in all modes. [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Sharp vertical record players
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