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Constant-Q transform

In mathematics and signal processing, the constant-Q transform and variable-Q transform, simply known as CQT and VQT, transforms a data series to the frequency domain. It is related to the Fourier transform and very closely related to the complex Morlet wavelet transform. Its design is suited for musical representation.

Measurement, Fast calculation & Calculation

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Calculation

Fast calculation

Comparison with the Fourier transform

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Constant-Q transform

Nodes25
Edges24
Triples22
Avg. degree1.92
Density0.08
Components1

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Constant-Q transform

Top relations

related to Fast calculation · 10
Constant-Q transform → An, CQT, Fourier, Goertzel, However, Implementations, LibROSA, LibROSA's Python, MATLAB, The
related to Comparison with the Fourier transform · 7
Constant-Q transform → As, At, Fourier, Hz, In, So, The
related to Variable-Q bandwidth calculation · 3
Constant-Q transform → The, There, VQT

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Important terminology

transform frequency fourier constant-q fast musical variable-q window data calculation bandwidth using frequencies resolution number series bin equivalent higher transforms

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
audioinstance ofAlthough for applications that are not interested in the DC0.80text
this is not a drawbackinstance ofAlthough for applications that are not interested in the DC0.80text
Constant-Q transformrelated to Comparison with the Fourier transformIn0.60section
Constant-Q transformrelated to Comparison with the Fourier transformFourier0.60section
Constant-Q transformrelated to Comparison with the Fourier transformAs0.60section
Constant-Q transformrelated to Comparison with the Fourier transformHz0.60section
Constant-Q transformrelated to Comparison with the Fourier transformThe0.60section
Constant-Q transformrelated to Comparison with the Fourier transformAt0.60section
Constant-Q transformrelated to Comparison with the Fourier transformSo0.60section
Constant-Q transformrelated to Fast calculationThe0.60section
Constant-Q transformrelated to Fast calculationFourier0.60section
Constant-Q transformrelated to Fast calculationGoertzel0.60section

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