KVR Audio

restrict · Post by **restrict** » Tue Jun 06, 2006 12:19 am

Is there a VST that emulates a tape deck: whereby, when you slow down the track, the speed and pitch lower / slow down as well. I want to be able to take a 45rpm record, copy it onto the computer and then slow it down to 33 1/3 (just like when I was a kid!)...also, looking to be able to record 'tape rewinding' sounds.
Thanks!

Meffy · Post by **Meffy** » Tue Jun 06, 2006 12:33 am

There's this: http://www.kvraudio.com/get/826.html

And welcome to KVR forums.

restrict · Post by **restrict** » Tue Jun 06, 2006 12:37 am

This looks really promising, exactly what I was trying to describe! Thanks so much, and thanks for the newbie greeting - this is a very useful site!

Meffy · Post by **Meffy** » Tue Jun 06, 2006 1:03 am

Sure thing. Be sure to try the KVR search -- http://www.kvraudio.com/get.php -- for all kinds of music software. Great resource. Best of luck!

Andywanders · Post by **Andywanders** » Tue Jun 06, 2006 1:19 am

A sampler with pitch controlled by Mod Wheel (or any other MIDI CC) will do this.

Cordelia · Post by **Cordelia** » Tue Jun 06, 2006 1:34 am

Does anybody know offhand the formula for calculating the difference in pitch (in cents) and difference in speed (in bpm) between 45rpm and 33rpm? I know the values are right there, if I could do math...

Thanks

james0tucson · Post by **james0tucson** » Tue Jun 06, 2006 1:37 am

Cordelia wrote:Does anybody know offhand the formula for calculating the difference in pitch (in cents) and difference in speed (in bpm) between 45rpm and 33rpm? I know the values are right there, if I could do math...

Thanks

Is the relation linear, or am I missing some variable due to the concentric circular shape of the tracks?

Kiwburger · Post by **Kiwburger** » Tue Jun 06, 2006 2:16 am

The relationship between notes is fairly hard to calculate. The basics - there are 100 cents to a semi-tone. There are 12 semitones in the western equal tempered scale. If you double a frequency, you get a perfect octave. Therefore, you can calculate the ratio between semitones as being the 12th root of 2. That is to say, if you multiply a note by this factor 12 times, you will get 2. So to calculate frequency differences accurately you need something that can work with the 12th root of 2 - and i'm not sure if your typical spreadsheet or cheapie calculator can do that. The 12 root of 2 is approximately 1.059463094359.

Barf · Post by **Barf** » Tue Jun 06, 2006 2:26 am

Wow & flutter:
http://www.kvraudio.com/get/2148.html

Is there a VST that emulates a tape deck?