Varispeed a finished track?

[David Polich]

Open nano sampler, put your soundbite in it, play with pitch bend. Voilà

That doesn't work. There's a marriage between the speed and pitch that the Varispeed does - as you speed it up the pitch rises commensurately. They need to be locked to each other so just using a pitch wheel - not gonna fly.

NanoSampler absolutely can do this. I've done it many times.

Have to agree. What is meant by "a percentage"? "as you speed it up the pitch rises commensurately" - what do you mean by that? This is exactly what a sampler can do.
Move the pitch bend wheel on your keyboard controller to change the pitch of the sample
in the sampler, by any "commensurate" value you want.

Really, dude. I've been programming synths and recording audio for over 30 years..very
familiar with the old Varispeed on analog tape machines. I don't get why you think the
same thing can't be accomplished with a sampler controlled by a keyboard pitch bend wheel.

[Killahurts]

Are you talking about MOTU's Machfive? This has a varispeed option? I own it - I've never looked for it there ...

Yes, check it out..

http://www.youtube.com/watch?v=Scz8Kh2C ... lAGnZ_Zfdw

The IRCAM time stretching/pitch shifting (or in your case, both), may possibly be the finest out there. I've used it with absolutely stellar results. Although I haven't used it for a varispeed type thing (where pitch and time move together like a tape machine), I have used it to change pitch and time, independently of one another. That's some serious power right there, bro.. light years beyond simple varispeed..

[Killahurts]

OK they don't actually call it varispeed.. but, it does what you want.

[rosindabow]

OK they don't actually call it varispeed.. but, it does what you want.

That's what I'm talking about!!! Way cool - very usable - gonna incorporate it into this project I'm on right now. Thanks!

[stubbsonic]

(Sorry, Dead Mr. Ed.)

When we are talking about "varispeed" and digital audio we are simply talking about a playback sample rate conversion. The old akai samplers and K2xxx's use variable playback rates to transpose the samples. So playing back a sample that was recorded at 44.1K at a new rate of 88.2K or 22.05K would play the sample up or down an octave (respectively). The tempo & pitch are both affected by the rate. Other samplers (Ensoniq & others) use something called "drop/add" which achieved the pitch shifting by selectively leaving out samples or adding new ones in to achieve pitch control of the sample playback.

I was just experimenting with NanoSampler in DP8 and it would not let me drag the sample from the soundbites window directly onto the NS window. Had to manually load it via file browser. Once I got it loaded, I tried dragging a MIDI note event up and it crashed DP with a crash report window. Alas.

I was able to tell that dragging the original note up or down from C4 was a quick way to get the sample to varispeed to a specific new key. If a specific tempo was needed, it would need to be a combination of a MIDI note and a single pitch bend message at the value that achieved the correct tempo. It seems like it would be easy enough to trial & error that value by typing/tweaking values of the PITCH BEND value in the Event List window.

[Don T]

Hello,
I recently had to do something like this and here is what I did.
I calculated the needed sample rate change for the speed that I wanted. In my case I was transferring a 78 RPM record at 45 RPM (the fastest my turntable would go). I then went in and changed the sample rate (sound bites window). Select "Only change the file's recognized sample rate do not process the file's audio"
My original sample rate was 96 kHz so I multiplied 96 * 1.733 (78/45) = sample rate of 166399. I changed the header to that and then selected sample rate change again and had it convert the file to 96 kHz this time allowing the file to be processed. AND voila! a 96kHz file running at the proper speed and pitch. It worked perfect.

Just change the percent you need for the speed change you want and you are golden.

Pretty easy really and as transparent as any SRC your system does.

Don T

[csavetman]

Hello,
I recently had to do something like this and here is what I did.
I calculated the needed sample rate change for the speed that I wanted. In my case I was transferring a 78 RPM record at 45 RPM (the fastest my turntable would go). I then went in and changed the sample rate (sound bites window). Select "Only change the file's recognized sample rate do not process the file's audio"
My original sample rate was 96 kHz so I multiplied 96 * 1.733 (78/45) = sample rate of 166399. I changed the header to that and then selected sample rate change again and had it convert the file to 96 kHz this time allowing the file to be processed. AND voila! a 96kHz file running at the proper speed and pitch. It worked perfect.

Just change the percent you need for the speed change you want and you are golden.

Pretty easy really and as transparent as any SRC your system does.

Don T

5 years later, just the info I needed to complete a project. Thanks Don!

Carlos

[Don T]

Hello,
I recently had to do something like this and here is what I did.
I calculated the needed sample rate change for the speed that I wanted. In my case I was transferring a 78 RPM record at 45 RPM (the fastest my turntable would go). I then went in and changed the sample rate (sound bites window). Select "Only change the file's recognized sample rate do not process the file's audio"
My original sample rate was 96 kHz so I multiplied 96 * 1.733 (78/45) = sample rate of 166399. I changed the header to that and then selected sample rate change again and had it convert the file to 96 kHz this time allowing the file to be processed. AND voila! a 96kHz file running at the proper speed and pitch. It worked perfect.

Just change the percent you need for the speed change you want and you are golden.

Pretty easy really and as transparent as any SRC your system does.

Don T

5 years later, just the info I needed to complete a project. Thanks Don!

Carlos

Wow, You are welcome....