A New System for Splicing Post-Synchronized Sound Recordings on Pilot-Frequency Controlled Tape
In order to guarantee phase-coherent splicing of pilot-frequency controlled tape in post-synchronization, a new device generates simultaneously both a pilot frequency of 50 Hz and an audible signal of 2,000 Hz in 50-Hz pulses, which is recorded on the tape during the leader part of the picture loop. This signal is created by projecting a vertical bar pattern of the picture leader onto scanning photodiodes. It is phase-coherent with the pilot frequency and serves as a signal for locating the splicing point.
- Print ISSN
- 0361-4573
- Published
- 1966-10
- Content type
- Original Research
- DOI
- 10.5594/J07081
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