void lpc_filter_fast

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

## void lpc_filter_fast | ## (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.

> This is functionally equivalent to lpc_filter_1 except it resduces the residual by 0.5 before filtering. Importantly it is about three times faster than lpc_filter_1 but in doing so uses direct C buffers rather than the neat C++ access function. This function should be regarded as temporary and will be deleted after we restructure the low level classes to give better access.

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