Linear (or Longitudinal) Timecode

On LTC, Jonathan Young of D├ębrouillard Limited says:

TV sound recordists and cameramen are often asked by production companies to provide audio transcription with camera timecode of interviews they have shot, as a matter of course. Many people will have used old Sony Walkman cassette recorders in the past for this. Not any more!

Words has uncovered the "Holy Grail"; their system is able to handle digital audio files (MP3/WAV) with TV camera longitudinal timecode, via web upload.

Having recorded some tests for a recent, quick turnaround BBC Panorama programme, the perfect settings for the Words transcription system are to record MP3 audio files at 120 kbps with a sample rate of 44.1 khz. The file audio is of a high enough quality for the transcribers to hear clearly without the timecode signal bleeding through. It also means many hours of audio can be recorded on one digital media card at these recording rates.

The particular system I used for these test transcriptions was a Roland Edirol R-09HR digital audio recorder coupled with a Black Box timecode/audio inserter box. This set-up will be familiar to most sound recordists from the days of using Walkmans. Any audio recorder made by Tascam, Sony, Marantz, etc. should offer the correct audio settings. The Words system is able to handle the timecode on either left/1 or right/2 channels, and the audio on the opposite channel

Jonathan Young, Documentary Lighting Cameraman
+44(0)20 8144 8045 (London office); +44(0)7831 531416 (Mobile)


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