apower(1) apower(1)
NAME
apower - Measure signal power of stdin
SYNOPSIS
apower [-bs blocksize] [-e encoding] [-ccitt]
DESCRIPTION
apower measures the power of a signal on stdin, printing the power level on
stdout every blocksize. arecord(1) | apower is a useful command pipeline.
OPTIONS
[-bs]
Specifies the blocksize. Defaults to 8000 (one second).
[-ccitt]
Calculates the signal power relative to the official CCITT digital
milliwatt. Otherwise calculates the power relative to a sine wave
3.16 dB below digital clipping level.
[-e]
Specifies the encoding of the data. Valid arguments given by giving a
random value to -e.
ENVIRONMENT
none
BUG
Probably.
If you encounter a reproducible bug, please submit a problem report to
(af-bugs@crl.dec.com).
SEE ALSO
atone(1) arecord(1)
COPYRIGHT
Copyright 1993-1994, Digital Equipment Corporation.
See AF(1) for a full statement of rights and permissions.
AUTHORS
Digital Cambridge Research Lab