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In order to preserve an audio signal's pitch when stretching or compressing its duration, many time-scale modification (TSM) procedures follow a frame-based approach. [6] Given an original discrete-time audio signal, this strategy's first step is to split the signal into short analysis frames of fixed length.
Beatmatching or pitch cue is a disc jockey technique of pitch shifting or time stretching an upcoming track to match its tempo to that of the currently playing track, and to adjust them such that the beats (and, usually, the bars) are synchronized—e.g. the kicks and snares in two house records hit at the same time when both records are played ...
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.
Tempo Matching: This feature attempts to detect the tempo and key of a pre-recorded audio file, and changes the tempo to match the project tempo. Audio Time Stretching & Pitch Shifting: Mixcraft claims to use an advanced algorithm to provide high quality time stretching and pitch shifting while minimizing CPU usage.
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 ...
Do Pitch class mapping with respect to the estimated reference frequency. This is a procedure for determining the pitch class value from frequency values. A weighting scheme with cosine function is used. It considers the presence of harmonic frequencies (harmonic summation procedure), taking account a total of 8 harmonics for each frequency.