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Signed-off-by: B. Watson <urchlay@slackware.uk> Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
113 lines
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ReStructuredText
113 lines
3.1 KiB
ReStructuredText
.. RST source for japa(1) man page. Convert with:
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.. rst2man.py japa.rst > japa.1
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.. |version| replace:: 0.9.4
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.. |date| date::
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====
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japa
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====
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----------------------------
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JACK and ALSA Audio Analyser
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----------------------------
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:Manual section: 1
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:Manual group: SlackBuilds.org
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:Date: |date|
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:Version: |version|
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SYNOPSIS
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========
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japa **-J** [**-name** *name* ] [**-s** *server*]
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japa **-A** [**-name** *name* ] [**-d** *device*] [**-C** *device* ] [**-P** *device* ] [**-r** *rate*] [**-p** *period*] [**-n** *nfrags*]
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DESCRIPTION
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===========
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japa (JACK and ALSA Perceptual Analyser), is a 'perceptual'
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or 'psychoacoustic' audio spectrum analyser. In contrast to
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JAAA, this is more an acoustical or musical tool than a purely
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technical one. Possible uses include spectrum monitoring while
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mixing or mastering, evaluation of ambient noise, and (using
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pink noise), equalisation of PA systems. For more information see
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/usr/doc/japa-|version|/README.
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In JACK mode (**-J**), japa creates 4 input ports (for spectrum
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analysis), named *japa:in_<N>* (where *<N>* ranges 1 to 4) and
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2 output ports (for noise generation), named *japa:pink* and
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*japa:white*. By default, these aren't connected to anything; use
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e.g. **qjackctl**\(1) or **jack_connect**\(1) to connect to other JACK
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clients.
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In ALSA mode, the inputs and outputs are connected directly to the
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ALSA device, meaning e.g. there will be 2 inputs and 2 outputs for
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a typical stereo audio card. Yes, this means the pink and white
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noise generators will be heard immediately on starting up japa;
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if you don't need them you can silence them with e.g. **-C hw:0 -P
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null**. If you get "Can't connect to ALSA", try a different device
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(use **alsamixer**\(1) or **aplay**\(1) to get a list of them).
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OPTIONS
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=======
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Either **-J** or **-A** is required.
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**-h**
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Show built-in help message.
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**-name** *name*
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Set X11 client name (and JACK client name, with **-J**).
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**-J**
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Use JACK for audio. This option is available in JACK mode:
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**-s** *server*
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Connect to a specific JACK server. Default is 'default' or
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**$JACK_DEFAULT_SERVER** environment variable.
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**-A**
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Use ALSA for audio. These options are available in ALSA mode:
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**-d** *device*
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ALSA device for capture and playback. This option sets the
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playback and capture devices to the same device. For separate
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capture and playback, use the **-C** and **-P** options.
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Default: **hw:0** unless **-C** or **-P** is used.
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**-C** *device*
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ALSA device for capture. Default: not used.
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**-P** *device*
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ALSA device for playback. Default: not used.
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**-r** *rate*
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Sample frequency. Default: 48000.
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**-p** *period*
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Period size. Default: 1024.
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**-n** *nfrags*
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Number of fragments. Default: 2.
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COPYRIGHT
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=========
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See the file /usr/doc/japa-|version|/COPYING for license information.
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AUTHORS
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=======
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japa was written by Fons Adriaensen <fons@kokkinizita.net>.
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This man page written for the SlackBuilds.org project
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by B. Watson, and is licensed under the WTFPL.
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SEE ALSO
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========
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**jackd**\(1), **jaaa**\(1)
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https://kokkinizita.linuxaudio.org/linuxaudio/
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