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Pitch scaling is the opposite: the process of changing the pitch without affecting the speed. Pitch shift is pitch scaling implemented in an effects unit and intended for live performance. Pitch control is a simpler process which affects pitch and speed simultaneously by slowing down or speeding up a recording.
Pitch shifters are included in most audio processors today. A harmonizer is a type of pitch shifter that combines the pitch-shifted signal with the original to create a two or more note harmony. The Eventide H910 Harmonizer, [2] released in 1975, was one of the first commercially available pitch-shifters and digital multi-effects units. On ...
A pitch shifter (also called an octaver for effects that shift pitch by an octave) raises or lowers (i.e. transposes) each note a performer plays by a pre-set interval. For example, a pitch shifter set to increase the pitch by a fourth will raise each note four diatonic intervals above the notes actually
The computer algorithm allows frequency-domain modifications to a digital sound file (typically time expansion/compression and pitch shifting). At the heart of the phase vocoder is the short-time Fourier transform (STFT), typically coded using fast Fourier transforms .
Orville (2001) [24] - Pitch shifter / effects processor with twice the processing power of the DSP7000 / DSP7500 processors [25] [26] and up to 8 channels; Eclipse (2002) [27] [28] [29] - First Eventide effects processor to come in single rackspace unit; Clockworks Legacy (2003) [30] - Software plug-in versions of classic Eventide effects and DSP
The DigiTech Whammy uses digital processing to raise or lower the pitch of an audio signal by up to two octaves. [1] The pitch detection algorithm was licensed from IVL Technologies. [2] The degree of shift is controlled by a treadle. [3] Users can set pitch-shifting intervals, add harmony, or detune the signal for a chorus-like effect. [3]
Pitch correction is an electronic effects unit or audio software that changes the intonation (highness or lowness in pitch) of an audio signal so that all pitches will be notes from the equally tempered system (i.e., like the pitches on a piano). Pitch correction devices do this without affecting other aspects of its sound.
Varying the time delay causes these to sweep up and down the frequency spectrum. A flanger is an effects unit that creates this effect. Part of the output signal is usually fed back to the input (a re-circulating delay line), producing a resonance effect that further enhances the intensity of the peaks and troughs. The phase of the fed-back ...