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mailto(kvehmanen -at- eca -dot- cx)
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manpagename(ecatools)(audio processing utils based on ecasound)
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bf(ecaconvert) .extension file1 [ file2 ... fileN ]
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bf(ecafixdc) file1 [ file2 ... fileN ]
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bf(ecalength) file1 [ file2 ... fileN ]
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bf(ecamonitor) [host][:port]
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bf(ecanormalize) file1 [ file2 ... fileN ]
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bf(ecaplay) [-dfhklopq] [ file1 file2 ... fileN ]
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bf(ecasignalview) [ options ] [ input ] [ output ]
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Ecatools are simple command line utils for audio file processing.
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Each tool is designed to perform one specific operation. Most of
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the tools also support batch processing.
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A tool for converting a set of files to a common target format.
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This target format is given as the first command line
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argument, and its syntax is em(.ext).
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A simple command-line tool for fixing DC-offset.
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See the separate ecalength(1) man page.
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Ecamonitor is a util program that can be used
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to monitor an active ecasound session. Ecamonitor
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is able to show information about the current
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chainsetup such as list of inputs, outputs,
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current position, effects, the engine status
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and numerous other things.
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By default ecamonitor will try to connect
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to IP4 address "localhost", to port "2868".
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A different address can be specified when
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starting ecamonitor, for example
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"ecamonitor foo.mynetwork.com" or
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"ecamonitor foo.mynetwork.com:4500".
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To enable inbound connections, ecasound has to be
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started with the em(--daemon) option. Ecamonitor is
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implemented in Python using the NetECI API.
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Ecanormalize is a command-line tool for normalizing audio
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files to utilize the full available sample resolution. Ecanormalize
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first finds out how much the input file can be amplified without
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clipping and if there is room for increase, a static gain will
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be applied to the file.
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Ecaplay is a command-line tool for playing audio files. Ecaplay
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uses the libecasound engine and is thus able to handle all audio formats
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supported by the library.
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Files can be selected for playback either by specifying the
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filenames on the command-line, or by using the playlist
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mechanism. In playlist mode, files can be added to the playlist
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using the em(-q) option. The em(-p) option can then be used
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to play all tracks on the playlist. Ecaplay will repeat the
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playlist tracks until explicitly stopped (with double Ctrl-C).
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Playlist can be flushed with em(-f) and its contents listed
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If not otherwise specified, ecaplay will use the audio output device
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specified in em(~/.ecasound/ecasoundrc) for playback. A different
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output device can be selected with em(ECAPLAY_OUTPUT_DEVICE) shell
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environment variable or with the em(-o:output_device) command-line
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Playback can be stopped at any time with Ctrl-C. If multiple
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files are played, first Ctrl-C will stop the current file and move
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on to play the next one. Issuing Ctrl-C twice (within one second),
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will cause ecaplay to exit.
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Set libecasound debug level. See ecasound(1).
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Flush the playlist contents. See also
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options em(-l, -p and -q).
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Print usage information and exit.
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Skip 'number' of files.
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List the current playlist contents to stdout. See also
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options em(-f, -p and -q).
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dit(-o:output_device)
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Use 'output_device' instead of the default output device
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(as specified in em(~/.ecasound/ecasoundrc)). Syntax is same
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as used by "-o" ecasound option (see ecasound(1) man page).
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This option overrides the em(ECAPLAY_OUTPUT_DEVICE) environment
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variable (more info below).
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Play tracks in the playlist (in looped mode). See also
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options em(-f, -l and -q).
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Queue new tracks to the playlist. All filenames given on
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the command-line will be added to the the playlist. It is
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possible to queue new tracks while another instance of
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ecaplay is using the playlist. See also options em(-f, -l
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Ecasignalview is meant for monitoring signal amplitude and peak
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statistics. It accepts the following options:
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The first option not starting with a '-' is interpreted
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as an input string. This can be a device or a filename. All formats
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supported by libecasound are accepted. Defaults to '/dev/dsp'.
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Similarly to input, second option not starting with a '-'
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is interpreted as output. Defaults to 'null'.
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Buffersize in sample frames. Defaults to 128.
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Enable cumulative mode. Counters are not reseted after refresh.
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dit(-f:format_string)
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Specify default audio format. See ecasound(1) for details.
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Specify screen refresh rate in milliseconds.
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It is possible to reset the max-peak and clipped-samples
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counters by sending a SIGHUP signal to the process (i.e.
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from another console: "killall -v -HUP ecasignalview").
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More complete documentation for ecasignalview can be found
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from "Ecasound User's Guide" (see ''http://www.eca.cx/ecasound
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manpagesection(ENVIRONMENT)
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Path to the ecasound executable. Used by many ecatools.
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em(ECAPLAY_OUTPUT_DEVICE)
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Device ecaplay should use for audio output. Same syntax
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as for ecaplay/ecasound "-o" option.
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em(~/.ecasound/ecasoundrc)
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The default ecasound resource file. See ecasoundrc(5)
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em(~/.ecasound/ecaplay_queue)
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File used to store the ecaplay playlist (one track per
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line with full path).
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ecasound (1), ecalength(1), "HTML docs in the Documentation subdirectory"
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Kai Vehmanen, <email(kvehmanen -at- eca -dot- cx)>
added
removed
Documentation/ecatools_manpage.yo
