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Name	Size	Permission
examples	[ DIR ]	drwxr-xr-x
README-arcam-av	1012 B	-rw-r--r--
README-jack	1.3 KB	-rw-r--r--
README-maemo.gz	2.63 KB	-rw-r--r--
README-pcm-oss	1.02 KB	-rw-r--r--
README-pulse	1.9 KB	-rw-r--r--
a52.txt	1.73 KB	-rw-r--r--
changelog.Debian.gz	5.83 KB	-rw-r--r--
copyright	1.49 KB	-rw-r--r--
lavrate.txt	1.01 KB	-rw-r--r--
samplerate.txt	933 B	-rw-r--r--
speexdsp.txt	1.27 KB	-rw-r--r--
speexrate.txt	958 B	-rw-r--r--
upmix.txt	1.21 KB	-rw-r--r--
vdownmix.txt	560 B	-rw-r--r--

Code Editor : upmix.txt

UPMIX PLUGIN
============

The upmix plugin is an easy-to-use plugin for upmixing to 4 or
6-channel stream.  The number of channels to be expanded is determined
by the slave PCM or explicitly via channel option.  For example, the
following PCM defines upmixing to 5.1 from 1-6 channels input:

pcm.upmix51 {
		type upmix
		slave.pcm "surround51"
	}

You can use this PCM as a default one by defining below:

pcm.!default "plug:upmix51"

The upmix plugin copies left and right channels to rear left and right
with a certain delay.  The delay size can be specified by "delay" PCM
option in msec.  For example, to set 10ms delay in the above case:

pcm.upmix51 {
		type upmix
		slave.pcm "surround51"
		delay 10
	}

As default, 15ms delay is used.

The channel option specifies the number of channels of output.  Either
4 or 6 channels are supported.  When 0 is passed, the plugin tries 4
or 6 channels appropriately suitable for the slave pcm.  The channel
option is useful if the slave PCM has no strict input condition (like
plug or route plugin).

pcm.myupmix {
		type upmix
		slave.pcm "something"
		channels 6
	}

The center and LFE channels are the average of sum of left and right
signals.

The accepted format is currently only S16.

${this.title}

Code Editor : upmix.txt