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CELT audio codec 0.4.0 (Default branch)

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Special Forums News, Links, Events and Announcements Software Releases - RSS News CELT audio codec 0.4.0 (Default branch)
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Old 07-27-2008
CELT audio codec 0.4.0 (Default branch)
CELT (Code-Excited Lapped Transform) is anultra-low delay audio codecdesigned for realtime transmission of high qualityspeech and audio.This is meant to close the gap between traditionalspeech codecs (suchas Speex) and traditional audio codecs (such asVorbis).License: BSD License (revised)Changes:
This release should greatly improve the handlingof transients and reduce the amount of pre-echo,especially for larger frame sizes. There is nowsupport for frame sizes up to 512 samples forthose who don't have extreme delay requirements.The release also brings improved tuning for stereoand a variety of frame sizes and higher bit-rates.The API has been changed slightly to remove theoverlap parameter, which is now automaticallyselected based on the frame size.Image

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LEARN ABOUT NETBSD

audiocfg

AUDIOCFG(1)						    BSD General Commands Manual 					       AUDIOCFG(1)

NAME

     audiocfg -- configure default audio device

SYNOPSIS

     audiocfg list
     audiocfg default index
     audiocfg test index

DESCRIPTION

     The audiocfg utility helps maintaining the audio and mixer device symlinks.

     Run with ``list'', it lists the available audio devices and shows the currently selected default audio device.  Called with ``test'', it
     plays a tone of 2 seconds for each channel of the device with the index index.  Called with ``default'', it sets the default audio device to
     the one with the index index.

     audiocfg needs access to /dev/drvctl and write access to /dev (when used with ``default'') to work.

FILES

     /dev/audio  Symlink to default audio device.

     /dev/audio[0-9]*
		 Available audio devices.

     /dev/audioctl
		 Symlink to default audio control device.

     /dev/audioctl[0-9]*
		 Available audio control devices.

     /dev/drvctl
		 Used for finding the corresponding audio driver to an audio device.

     /dev/mixer  Symlink to default mixer device.

     /dev/mixer[0-9]*
		 Available mixer devices.

     /dev/sound  Symlink to default audio device (for the difference to /dev/audio, see audio(4)).

     /dev/sound[0-9]*
		 Available audio devices.

SEE ALSO

     audioplay(1), audiorecord(1), audio(4), drvctl(8)

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