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MMD > Archives > December 1996 > 1996.12.13 > 08Prev  Next


Re: Take-up Spool Tempo Compensation
By David Wasson

Robbie, thanks for your explanation of what may have been going on at Ampico. Even so, I find it incredible that Ampico, with all of their complex music roll perforating machinery, somehow chose to mostly ignore the issue of tempo compensation.

All the rolls I examined said "Played by". Does this mean hand played? One of the titles I examined was "Aida". I assume this roll is classical. None of these rolls were tempo-compensated.

It seems to me that Ampico had many more clever mechanics than real musicians. Tempo compensation is not a difficult thing to do, I can think of at least three ways to do it and still have a perforator run synchronously with the master roll, or its equivalent. With this in mind I have a few questions.

1. For how many years did Ampico perforate rolls like these?

2. Will the MIDI Ampico files released by Wayne Stahnke include a tempo map to cause the music to speed up towards the end like it would on a real piano?

3. If a tempo map is included, will you be able to pick the size of the take-up spool to emulate an Ampico A or B.

4. Are there plans to properly perforate from these "recovered" master rolls to include tempo compensation?

5. How will master rolls be "recovered" from rolls cut on Wurlitzer's automatic tempo compensating perforators?

6. What tempo compensating methods are use by people today when cutting new rolls such as those perforated by Richard Tonneson, Douglas Henderson, Carl Lambie, "Amadeus", Playrite, and QRS.

Sincerely, David F. Wasson


(Message sent Fri 13 Dec 1996, 18:06:24 GMT, from time zone GMT-0800.)

Key Words in Subject:  Compensation, Spool, Take-up, Tempo

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