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Signed-off-by: B. Watson <yalhcru@gmail.com> Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
129 lines
4 KiB
Groff
129 lines
4 KiB
Groff
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.TH "JAPA" 1 "2021-11-29" "0.9.2" "SlackBuilds.org"
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.SH NAME
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japa \- JACK and ALSA Audio Analyser
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.\" RST source for japa(1) man page. Convert with:
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.\" rst2man.py japa.rst > japa.1
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.\" rst2man.py comes from the SBo development/docutils package.
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.SH SYNOPSIS
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.sp
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japa \fB\-J\fP [\fB\-name\fP \fIname\fP ] [\fB\-s\fP \fIserver\fP]
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.sp
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japa \fB\-A\fP [\fB\-name\fP \fIname\fP ] [\fB\-d\fP \fIdevice\fP] [\fB\-C\fP \fIdevice\fP ] [\fB\-P\fP \fIdevice\fP ] [\fB\-r\fP \fIrate\fP] [\fB\-p\fP \fIperiod\fP] [\fB\-n\fP \fInfrags\fP]
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.SH DESCRIPTION
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.sp
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japa (JACK and ALSA Perceptual Analyser), is a \(aqperceptual\(aq
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or \(aqpsychoacoustic\(aq 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\-0.9.2/README.
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.sp
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In JACK mode (\fB\-J\fP), japa creates 4 input ports (for spectrum
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analysis), named \fIjapa:in_<N>\fP (where \fI<N>\fP ranges 1 to 4) and
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2 output ports (for noise generation), named \fIjapa:pink\fP and
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\fIjapa:white\fP\&. By default, these aren\(aqt connected to anything; use
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e.g. \fBqjackctl\fP(1) or \fBjack_connect\fP(1) to connect to other JACK
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clients.
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.sp
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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\(aqt need them you can silence them with e.g. \fB\-C hw:0 \-P
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null\fP\&. If you get "Can\(aqt connect to ALSA", try a different device
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(use \fBalsamixer\fP(1) or \fBaplay\fP(1) to get a list of them).
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.SH OPTIONS
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.sp
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Either \fB\-J\fP or \fB\-A\fP is required.
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.INDENT 0.0
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.TP
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.B \fB\-h\fP
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Show built\-in help message.
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.TP
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.B \fB\-name\fP \fIname\fP
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Set X11 client name (and JACK client name, with \fB\-J\fP).
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.TP
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.B \fB\-J\fP
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Use JACK for audio. This option is available in JACK mode:
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.INDENT 7.0
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.TP
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.B \fB\-s\fP \fIserver\fP
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Connect to a specific JACK server. Default is \(aqdefault\(aq or
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\fB$JACK_DEFAULT_SERVER\fP environment variable.
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.UNINDENT
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.TP
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.B \fB\-A\fP
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Use ALSA for audio. These options are available in ALSA mode:
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.INDENT 7.0
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.TP
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.B \fB\-d\fP \fIdevice\fP
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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 \fB\-C\fP and \fB\-P\fP options.
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Default: \fBhw:0\fP unless \fB\-C\fP or \fB\-P\fP is used.
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.TP
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.B \fB\-C\fP \fIdevice\fP
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ALSA device for capture. Default: not used.
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.TP
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.B \fB\-P\fP \fIdevice\fP
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ALSA device for playback. Default: not used.
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.TP
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.B \fB\-r\fP \fIrate\fP
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Sample frequency. Default: 48000.
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.TP
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.B \fB\-p\fP \fIperiod\fP
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Period size. Default: 1024.
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.TP
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.B \fB\-n\fP \fInfrags\fP
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Number of fragments. Default: 2.
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.UNINDENT
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.UNINDENT
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.SH COPYRIGHT
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.sp
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See the file /usr/doc/japa\-0.9.2/COPYING for license information.
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.SH AUTHORS
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.sp
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japa was written by Fons Adriaensen <\fI\%fons@kokkinizita.net\fP>.
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.sp
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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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.SH SEE ALSO
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.sp
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\fBjackd\fP(1), \fBjaaa\fP(1)
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.sp
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\fI\%https://kokkinizita.linuxaudio.org/linuxaudio/\fP
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.\" Generated by docutils manpage writer.
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