ChucK
 Programming Guide
Unit Analyzers
version: 1.4.x.x (numchucks)
basic UAna classes
:
UAna
UAnaBlob
Windowing
transformations
:
FFT
IFFT
DCT
IDCT
feature extractors
:
Centroid
Flux
RMS
RollOff
much more to come!
( see
unit analyzers
under the
language specification
;
also see
unit generator reference
)
Standard UAnae
basic uana classes
[uana]
UAna
base class from which all unit analyzers (UAnae) inherit
UAnae (note plural form) can be interconnected via => (standard chuck operator) or via =^ (upchuck operator)...
see
UAna Documentation
in the language specification.
[object]
UAnaBlob
the carrier of data between UAnae
contents include arrays of floats and complex values
updated and returned as result of UAna's .upchuck() operation
[object]
Windowing
generates common FFT windows
types include Rectangular, Barlett, Hann, Hamming, Blackmann
domain transformations
[uana]
FFT
Fast Fourier Transform
takes FFT's at arbitrary window, fft, hop sizes
outputs both complex and real spectra
[uana]
IFFT
Inverse Fast Fourier Transform
input spectral frames
output overlappedadded timedomain samples
[uana]
DCT
Discrete Cosine Transform (type II)
(um, it's not "fast")
[uana]
IDCT
Inverse Discrete Cosine Transform (DCT Type III)
(um, it's not "fast")
feature extractors
[uana]
Centroid
from magnitude spectrum, compute center of mass
[uana]
Flux
from magnitude spectrum, compute spectral flux across frames
[uana]
RMS
from magnitude spectrum, compute RMS power mean
[uana]
RollOff
from magnitude spectrum, compute RollOff (settable percentage)
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Unit Generator Reference
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Reserved Keywords
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Programming Guide
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