.\" $Id: audio.1audio,v 1.2 1996/07/16 AFsp-V2R1 $
.TH audio 1audio "TSP (audio)"
.SH Name
audio \- TSP Audio Programs
.SH Description
The audio package contains programs for comparing, copying,
filtering, and resampling audio files.  It also provides a program for
generating noise and programs for LPC analysis and synthesis.
.PD 0
.RS 4
.IP CompAudio 5
Compare audio files, producing statistics and signal-to-noise ratio figures.
.IP ConcatAudio 5
Concatenate samples from audio files.
.IP CompAudio 5
Copy audio files.  This program combines samples from input audio
files (an arbitrary linear combination) and writes them to the
output file in a user selectable format.  One application is to
provide format conversion for an audio file; another is to combine
samples from multi-channel files.
.IP FiltAudio  5
Filter audio files.  This program filters an audio file with an
FIR, IIR or all-pole filter.  This program can be used with an
appropriate filter for sample rate conversion.
.IP GenNoise 5
Generate noise.  This program generates an audio file containing
Gaussian white noise.
.IP InfoAudio 5
Display information about an audio file.
.IP LPanal 5
Demonstration program to do LPC analysis on a speech file.
.IP LPsyn.html 5
Demonstration program to do LPC synthesis from a residual file.
.IP ResampAudio 5
Resample data from an audio file.  This process involves interpolating
between the samples in the original file to create a new sequence of
samples with a new spacing (sampling rate).
.RE
.PD
.SH Audio File Formats
The audio routines support a number of different file formats.  On opening an
audio file for reading, the file type is automatically determined from the file
header.  The following file formats are supported for reading.
.RS 4
.TP 5
Headerless audio files
.TP 5
Sun audio files
.TP 5
RIFF WAVE files
.TP 5
AIFF/AIFF-C audio files
.TP 5
NIST SPHERE audio files
.TP 5
IRCAM soundfiles
.TP 5
INRS-Telecom audio files
.TP 5
ESPS sampled data feature files
.TP 5
Text audio files
.RE
.PP
The following file formats are supported for writing.
.RS 4
.TP 5
Headerless audio files
.TP 5
AFsp (Sun) audio files
.TP 5
RIFF WAVE files
.TP 5
AIFF-C audio files
.RE
.SH See Also
libtsp