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Re: JAM-1969-11-17@44=Receiving_Compliments-v2

Messages in this topic: 6 View All
badger danceDec 5, 2011

Thank you once again for the JAM.

Regarding the synchronisation, consider if this is a function of the computer and the media players that are running at the same time.

I would be surprised if the programmes were now broadcast from tape but a digital source.

The variance in the playback speed is more likely to be the earlier recording/play-back where the speed lock of the capstan motor was 'hunting' around the correct speed lock (thermal effect of the control circuit would be my guess) This would explain the synchronous start, speeding up, then slow down to achieve synchronisation again.

Probably recorded on either a BTR/2s or (at the time a new) B62 tape machine.

It would be possible to correct this variation by digitally fixing the playback speed by synchronisation with the mains 50Hz hum that will present on the tape.

Many old tape machines here: http://www.btinternet.com/~roger.beckwith/bh/tapes/btr2.htm

...or the B62 like this one: http://i.ebayimg.com/00/$%28KGrHqQOKnEE1P2-!LF!BNdtyNh%28EQ~~_12.JPG

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