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- Sel-Sync abstract "Sel-Sync or Selective Synchronous recording is the process of selectively using some record heads as play back heads so that new signals can be recorded on other tracks in perfect sync with the existing tracks. Sel-sync recording dramatically changed the recording process allowing overdubbing of individual recorded tracks.Sel-sync along with the multi-track head was invented by Ross Snyder at Ampex in 1955. Three problems had to be solved: mechanical alignment, switching of the record track to playback mode and multitrack erase head. The hard problem was the switching of a track between record and playback mode, as the impedance of record heads are quite different from the impedance of play back heads. Prior to Sel-Sync record heads were directly wired to the record electronics and playback heads were directly wired to the playback electronics. Also the designs of the two heads were very different. The problem of switching very low-level/high-impedance circuitry without introducing hum or noise had to be solved. Mort Fujii in the Ampex special projects lab was responsible for the actual design.Ampex did not patent Sel-Sync because Ross Snyder did not think it would be of interest to more than a few musicians and an Ampex lawyer said the idea was "obvious", hence unpatentable. Ampex only trademarked the name. Sel-Sync remained an external, add-on function until the AG-440 and later series, wherein Sel-Sync was integrated into every electronics, although for obvious reasons Sel-Sync is useful only with multi-track machines (more than one track, and, usually, three or more tracks).D-2 (video) was the first digital recording video tape format to offer Sel-Sync "read before write" (an Ampex term) also known as "preread" on Sony magnetic tape recorders. Read before write allowed simultaneous playback and recording on the same VCR.".
- Sel-Sync wikiPageID "26177019".
- Sel-Sync wikiPageRevisionID "587180953".
- Sel-Sync hasPhotoCollection Sel-Sync.
- Sel-Sync subject Category:Sound_recording_technology.
- Sel-Sync comment "Sel-Sync or Selective Synchronous recording is the process of selectively using some record heads as play back heads so that new signals can be recorded on other tracks in perfect sync with the existing tracks. Sel-sync recording dramatically changed the recording process allowing overdubbing of individual recorded tracks.Sel-sync along with the multi-track head was invented by Ross Snyder at Ampex in 1955.".
- Sel-Sync label "Sel-Sync".
- Sel-Sync sameAs m.0b73x4y.
- Sel-Sync sameAs Q7447369.
- Sel-Sync sameAs Q7447369.
- Sel-Sync wasDerivedFrom Sel-Sync?oldid=587180953.
- Sel-Sync isPrimaryTopicOf Sel-Sync.