Channel Status And User Bits; Starting And Stopping The Dat - Townshend Computer Tools DAT-Link User Manual

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data to be connected to the
For example, if is a program which generates a sampled-data sine-wave, then
sine
a test tone can be output on the left channel using:
sine | naplay -ol
The playback will continue until either the
the program is interrupted. Note that the
when standard input is used.

5.11 Channel Status and User Bits

In addition to audio data, the connection between the
audio equipment also carries some additional information known as channel status
bits and user bits . By default,
channel status bits for that are appropriate for the chosen values of the other options,
assuming a consumer digital audio device is connected. If you are using professional
equipment with the AES/EBU connectors on the
be given the option. This causes some subtle modi cations to the channel status
-A
bits that are required by the professional standards.
For users that wish to exercise greater control over the channel status and user bits,
has an option,
naplay -c
a le. This le can be edited using any text editor. It's format is described in
Appendix B.4.
5.12 Starting and Stopping the DAT Machine
The program also provides an option that allows the
naplay
stop the DAT recorder automatically. By running
DAT-Link
will start the DAT machine recording before beginning playback. After
playback has completed, the DAT machine will be stopped.
Before this option can be used, it is necessary to set up the
control facility as described in Chapter 8. Also, the
must be set to the name of the device to be controlled. To start the DAT machine
the program issues the following remote commands:
naplay
STOP - RECORD - <6 second pause> - PLAY
Between the RECORD and PLAY commands, the six second pause gives the DAT
machine time to enter record mode. When playback is nished the program issues
a STOP command.
program without creating an intermediate le.
naplay
program stops generating data or
sine
, , and
-r -t
zeroes all of the user bits and generates
naplay
, which instructs it to read the control information from
Playback Tutorial
options are not available
-R
DAT-Link
and the digital
DAT-Link
, then
naplay
DAT-Link
to start and
with the option, the
naplay -a
DAT-Link
's remote
environment variable
DL RC
should