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| | % dtas-xdelay(1) dtas user manual
%
# NAME
dtas-xdelay - play audio with a crossover delay
# SYNOPSYS
dtas-xdelay [OPTIONS] INPUT1 INPUT2 DELAY
# DESCRIPTION
dtas-xdelay will delay an audio band by a given delay (in seconds or
fractions thereof). This can be useful for tuning a sub/sat speaker
system. It is intended for use a dtas-player sink command as displayed
in the synopsis.
The INPUT arguments (/dev/fd/lo and /dev/fd/hi) are automatically
changed by dtas-player to match the given file descriptors of the pipes.
Both descriptors receive the same audio data, but will be split using a
Linkwitz-Riley crossover. The high-band (second argument) will be
delayed by default.
# EXAMPLE
To set this via dtas-player to delay the high frequencies by 20ms.
dtas-ctl sink ed SINKNAME \
command='dtas-xdelay /dev/fd/lo /dev/fd/hi 0.020'
# OPTIONS
-x, \--crossover-frequency FREQUENCY
: Frequency at which to set the crossover. This defaults to 80 (Hz).
-l, \--lowpass-delay
: Delay the lowpass frequency instead of the highpass one.
# ENVIRONMENT
SOXFMT - this environment is automatically set if used as a dtas-player
sink
DTAS_PLAYER_SOCK - the path to the dtas-player control socket.
This defaults to ~/.dtas/player.sock
# NOTES
The author of this knows little about signal processing and is just
parroting things he's learned on the sox documentation and mailing list.
Corrections greatly appreciated (email Eric Wong e@80x24.org)
# SEE ALSO
dtas-player(1), dtas-player_protocol(7), dtas-ctl(1), sox(1)
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