GRM Tools

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Pitch Accum
 Classic TDM / OSX

Create two distinct 'shadows' of a sound at different transposition levels and at different delay intervals.
 

 GRM Tools Pitch Accum TDM
 
How does it work?

Two independent and simultaneous transposers are used to transpose the pitch of an input sound. A pitch follower detects the pitch of the input sound and optimizes the transposition. The transposed sounds are then transformed with delays and modulations.

The 'transpose', 'delay', and 'gain sliders' control the transpositions and delays. The 'periodic modulation' controls, to the right in the screen shot above, let you choose the shape of the modulator waveform ('sine' is shown) as well as its frequency, amplitude and phase. If the amplitude of the modulator is low and the frequency is about 5 Hz, the effect will be a vibrato. The random modulation sliders let you add randomness to the modulation. The 'feedback' slider adds reverb, the 'mono / st' slider directs the transposed voices to both or each channel, and the 'direct' slider controls the amplitude of the original input signal. The 'cross-fade', 'window', and 'pitch detector' controls affect the functioning of the transposition algorithm.

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