In file ../include/sigpr/EST_filter.h:

void lpc_filter_1

(EST_Track &lpc, EST_Wave & res,   EST_Wave &sig)

Synthesize a signal from a track of linear prediction coefficients.

Documentation

Synthesize a signal from a track of linear prediction coefficients. This function takes a set of LP frames and a residual and produces a synthesized signal.

For each frame, the function picks an end point, which is half-way between the current frame's time position and the next frame's. A start point is defined as being the previous frame's end. Using these two values, a portion of residual is extracted and passed to lpc_filter along with the LP coefficients for that frame. This function writes directly into the signal for the values between start and end;

Parameters:

sig - the waveform to be synthesized
lpc - a track of time positioned LP coefficients
res - the input residual waveform

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This page is part of the Edinburgh Speech Tools Library documentation
Copyright University of Edinburgh 1997
Contact: speech_tools@cstr.ed.ac.uk