![]() ![]() This is my first post so please feel free to amend if I have inadvertently broken any codes. Each of these transformations may be made independent of one another meaning pitch may be changed without changing the duration, duration without changing pitch. I should think the wolf to voice should be a great starting point as there can be lots of harmonic material in the howl of the wolf (I think pete may have an example on his site) The phase vocoder is an effective tool for the manipulation of the duration or the pitch of a sound file. Here is a link to the video where he explains it more clearly. Therefore it is a good idea to preprocess the sound files so they have similar pitch and formant characteristics. It is easier to transition harmonic material and harmonic material that is similar in pitch. General things you may know already (apologies if you do) such as choosing the the point of transformation can make the transition more or less believable. This process allows one to change pitch without changing the length of the soundfile or to change length without changing pitch. Essential tools for adventurous musicians and sound designers. This is a collection of plugins that use the Soundhack phase vocoder and granular synthesis algorithms to stretch time, shift pitch and distort phase. Pitch shifting, harmonizing, time stretching, layered loops, phase mangling,ambient clouds, resonant stuttering and more. a vocoded bit of audio at this point always has many artifacts. The Soundhack plugins are available for Mac, in VST, AU and RTAS versions, and as VST plugins for Windows. minor, and consist of different headers, and varying scale factors for amplitude. Some of the general principles apply to any software. A Four-Plugin Bundle exploring the classic Phase Vocoder and Granular Synthesis algorithms. the phase vocoder exist, notably in Csound, the CDPsystem (based on the CARL implementation (Moore/Dolson)), Soundhack (Tom Erbe), and the Princeton-hosted PVC package (Paul Koonce). ![]() I was recently at a kyma Conference and got to meet a fantastic chap called Pete Johnston (check out his work here ) who gave demonstration on morphing. Pitch shifting is provided with a large range, 4 octaves up and 4 octaves down. Alchemy and metasynth as mentioned are also very good. The plugin +pitchsift is the classic phase vocoder based pitch shifter with a number of enhancements. Spectrumworx Audiosculpt SPEAR Composers Desktop Project can all do this kind of thing. Pvocativerbe's new collection is the Pvoc Kit. There are a number of ways of doing this Sound Hack has a variable cross convolution process and is great ( as is FScape ). The phase vocoder works by sampling the incoming signal and dividing it into blocks each block is, in turn, divided into different frequency bands. ![]()
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