Townshend Computer Tools DAT-Link User Manual page 160

156
Specify the sampling rate that will be used to generate the digital output data. Legal values
are 32000, 44100, 48000. These may be prefixed by the letter E, S, A, F, and/or G. The firs
f our select an external clock source from the External Clock, SPDIF, AES, or FIBER inputs
respectively. The G prefix instructs the DAT-Link to output it's clock on the External Clock
c onnector. Without a prefix, the DAT-Link's internal clock generator is used. The SPDIF,
AES and FIBER settings ( prefixes S, A, or F ) generate output locked to incoming digital
d ata on the respective input. Note that the digital output from most DAT machines is locked
to their inputs and thus cannot also be used as a source for the DAT-Link's output. Th
d efault setting is 48,000 samples per second using the internal clock.
–s file_sampling_rate
This option is used to specify the sampling rate to be used for playback of each file. Using this
option invokes the sample-rate conversion software in the DAT-Link, if the rate is differen
f rom the rate at which the digital output generated (the argument to the –S option). Quality and
filtering characteristics of the conversion depend upon the sampling rates and whether th
t ransfer is mono or stereo. See the DAT-Link User's Manual for details.
–t seconds
Transfer seconds seconds of audio from each file and then stop.
–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
then use unit 0 on the local host.
ENVIRONMENT
Default NetAudio server to use, of the form host:nn , where host is the name of the
AUDIO_DEVICE
host where the server is running and nn is the unit number of the DAT-Link to use
I f not set, unit 0 on the local host is used is used.
Name of remote device for use with -a option.
D L_RC
CONFIGURATION OPTIONS
naplay.AutoStart True to automatically start/stop DAT machine. [off]
naplay.Consumer True to generate consumer channel status info. [on]
n aplay.filter.resp.nn.mm
If non-null, the specification of filter response for sample-rate converter which
converts from nn to mm samples/second. See the User's Manual for details o
u
naplay.stopband.atten Attenuation, in dB, of sample-rate converters anti-aliasing stopband. [90
n aplay.bufferTime This option provides some control over the internal buffering of the DAT-Link.
The option value specifies the minimum number of seconds of data that should
b
ing this value will decrease the likelihood of the buffers being underrun due to
o
latency between the time the naplay command is entered and the time sound
o
Note that this option acts only as a hint to the DAT-Link; the exact amount of
b
SEE ALSO
netaudiod(8), narecord(1), naset(1), nastatus(1)
DAT-Link User's Manual.
BUGS
On DAT-Link version 1.3 and earlier, the –c option only sets the first four bytes of the channel status
and user bytes, the remaining bytes will be set to default values. Also, the left channel status is used fo
b oth the left and right channels. DAT-Link version 1.4 can set all 24 channel status bytes for each
NetAudio Reference
AUDIO_DEVICE
sing this option. [NULL]
e buffered internally in the DAT-Link before playback commences. Increas-
ther activity on the host computer. Making it too large will increase the
utput commences. The default value of 1 second is usually a good trade-off.
uffering may be slightly different. [1]
Last change: 1995/02/08
NAPLAY(1)
environment variable. If it is not set either
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,
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