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Pitch Shifting/bending About Truespace Archives These pages are a copy of the official truespace forums prior to their removal somewhere around 2011. They are retained here for archive purposes only. Pitch Shifting/bending // Archive: Tech Forum 1  |   Order by default Post by W!ZARD // May 8, 2008, 11:27pm W!ZARD Total Posts: 2603 Working on my animations and I've discovered I need to be able to create a Doppler shift effect to several .wav files. I have a flying vessel travelling from distant left to Near right and I can adjust the pan and volume graphically in Sony Vegas Movie Studio Pro or in a stand alone .wav editor (I have several). What I need is to be able to smoothly vary the pitch over time to simulate the Doppler effect - the "neeeeeoooooow" effect. I've ventured into the mystifying world of VST effects and found dozens that will incrementally shift pitch - in discrete steps - but nothing that can change the pitch smoothly. If any of you more musically informed types can offer any suggestions I'd be most grateful Post by Tiles // May 9, 2008, 1:23am Tiles Total Posts: 1037 Two ways. Record the pitch gliding effect manually in your sequencer/whatever you use to make the sound by raise/lower the pitch. Or you use a wave editor for that. Surprisingly Audacity doesn't support gliding stretch. And i don't know of another free wave editor that does. Except a stoneold shareware version of a wave editor. Cool Edit 96. Or Cool Edit 2000. The Company doesn't exist anymore. Better said it is an Adobe product now. Amazingly you can still find Cool Edit demos as a download. It has the limit that you cannot use all features at once. But should do the trick for you. Here a quick result for Cool Edit 96: http://www.threechords.com/hammerhead/cool_edit_96.shtml Tick "Save, External Clipboard Functionality and Sampe Converting" and "Stretching, PCM MusicGeneration and DTMF (Telephone) Tones" in the shareware start dialogue. Then load your sample, select an area of your sample and choose Transform Time/Pitch /Stretch. Change to the Gliding Stretch register, choose Raise Pitch, change the Final slider a bit, and apply. Rest is finetweaking :) EDIT: I found out that a plugin for Audacity exists that may do the trick too. It's called Turntable warping. The download can be found here: http://audacity.sourceforge.net/download/nyquistplugins Post by Ambrose // May 9, 2008, 7:24am Ambrose Total Posts: 261 Ages ago but I thought TS allready did this when applying sound to an object!? Could be wrong... SeYa/Ambrose... Post by W!ZARD // May 9, 2008, 11:16am W!ZARD Total Posts: 2603 Tiles, I owe you a beer! That Cool Edit tip did the job beautifully thanks very much! After downloading a bunch of Nyquist and VST plug-ins for Audacity, none of which would work I ended up DLing a trial version of Sound Forge which also did the trick but is only valid for 30 days - so the CoolEdit solution is perfect thanks very much again. Ambrose, I've never used the tS option of attaching sounds to objects as I always output my anims as a series of stills and compile them in another app then add the sounds to everything later. I know the 'attach sounds to object' thing worked in tS6.6 but I don't recall seeing it anywhere in tS7.5 - which doesn't mean it's not there - only that I've not seen it!! Post by Jack Edwards // May 9, 2008, 11:23am Jack Edwards Total Posts: 4062 I'm not sure if you can do it in Vegas directly (without the use of a VST) but if you can it would be using automation to vary the pitch value over time. You may want to look into Cakewalk Sonar or Tracktion for putting together you music sound track. Tracktion has a pitch shift VST effect that can be very easily hooked up to automation and then keying the pitch value change is very straight forward. Post by W!ZARD // May 9, 2008, 11:38am W!ZARD Total Posts: 2603 Thanks Jack - I'm not too worried about putting the music together - I have a Roland Virtual Studio 8 track digital workstation which is simply one of the best tech purchases I ever made. I also have a wide selection of wave editors and multi-trackers to play with - just nothing that would would do the pitch bend thing to a wav file. Cool Edit does that very nicely for my needs so I'm back on track (excuse the terrible pun) :D Post by Tiles // May 9, 2008, 8:41pm Tiles Total Posts: 1037 Glad i could help :) Post by Ambrose // May 10, 2008, 3:35am Ambrose Total Posts: 261 Hi Wiz! Why I menthioned it were because you wanted the doppler effect and from what my memory can recall that's exactly how Ts works. That is if you've a sound on an object and you're moving forward it the sound will get faster and faster until you rach it and pass it. What you can do i record the sound the computer has by another program and if you've general sound that just plays left and right speaker at samt volume all the time then just hook up two objects by the camera and glue them together like left and right speaker. SeYa/Ambrose...

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