152 NAGETFILTER(1)
NAME
nagetfilter – get the impulse response of the DAT-Link filters
SYNOPSIS
nagetfilter –P|-R [ –u host:unit ]
DESCRIPTION
nagetfilter is used to retrieve the impulse response of the last filter used by the NetAudio server for
-
l
playback or recording. The sampling rate of the impulse response is written to standard output fol
owed by the samples of the (symmetric) response. This response can be used to compute the fre-
S
quency response of the DAT-Link’s sample rate converter.
ince nagetfilter always returns the last playback or record filter generated by the server, it is important
l
g
to be careful that the server is not used by another user before nagetfilter is used, otherwise you wil
et their filter. Typically this program will be used immediately after naplay (1) or narecord (1).
y
n
If the naplay(1) or narecord(1) filter.resp configuration option is used, the impulse response return b
agetfilter will be the total response of the DAT-Link, including it’s implementation of the requested
OPTIONS
filter.
–P Return the playback filter.
–R Return the recording filter. Either –P or –R must be specified.
–u host:unit
Use the NetAudio server on host that is connected to the DAT-Link with unit-number unit.
,Otherwise, use the value of the environment variable. If it is not set either
AUDIO_DEVICE
ENVIRONMENT
then use unit 0 on the local host.
AUDIO_DEVICE NetAudio server to use of the form host:nn , where host is the name of the host
t
s
where the server is running and nn is the unit number of the DAT-Link to use. If no
et, unit 0 on the local host is used is used.
SEE ALSO
netaudiod(8), narecord(1), naplay(1),
N
DAT-Link User’s Manual.
etAudio Reference Last change: 1992/01/28 1
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