frameaccum~

Compute "running phase" of successive phase deviation frames

Description

frameaccum~ computes a running phase by keeping a sum of the values in each position of its incoming signal vectors. When used inside a pfft~ object, it can keep a running phase of the FFT because the FFT size is equal to the signal vector size.

Arguments

Name Type Opt Description
phasewrap-flag (0 or nonzero) int opt A non-zero integer argument will cause the accumulated values to be wrapped between -π and π. This optional feature is to reduce roundoff error when using frameaccum~ to accumulate phase values. When the argument is set to one. frameaccum~ object performs a phase warping (like the phasewrap~ object). It is more efficient to use the non-zero argument than to use a combination of frameaccum~ and phasewrap~ objects.

Messages

signal The input to be accumulated.

Information for box attributes common to all objects

Output

signal: For each signal vector, the first sample of its output will be the sum of all of the first samples in each signal vector it has received, the second sample of its output will be the sum of all the second samples in each signal vector, and so on.

Examples

frameaccum~ computes the running phase between frames of spectral data

See Also

Name Description
framedelta~ Compute phase deviation between successive FFT frames
MSP Tutorial 26: Frequency Domain Signal Processing with pfft~ MSP Tutorial 26: Frequency Domain Signal Processing with pfft~