Can you say a bit more about the Codec, like: What is the average compression ratio? Does it use a fixed or variable bit rate? How CPU intensive is compression/decompression?
Thanks, - Andreas
Takashi Yamamiya wrote:
Hello,
I have uploaded some change sets to the update stream (#1230, #1231) for Ogg Vorbis and Speex sound codec support. It allows you to compress sound data efficiently, and it would be easy to make tutorial project with voice guidance.
- Recoding a voice with codec using Sound Recorder in parts bin.
- Making a tile from the recoeded voice, and saving as a .pr file.
- Playback .ogg / .spx music from File List.
I will apply the Event Theatre soon.
However, you need a plugin file to test this feature. Please download and try it.
http://tinlizzie.org/olpc/OggPlugin/OggPlugin.linux.tgz for OLPC machine and linux.
http://tinlizzie.org/olpc/OggPlugin/OggPlugin.win.zip for Windows
http://tinlizzie.org/olpc/OggPlugin/OggPlugin.mac.zip for Mac OS X The mac plugin requires universal binary ftp://ftp.smalltalkconsulting.com/. Note that because this is my first time to build something on Macintosh, it is possible that something is completely bad. At least it worked on a MacBook though, please tell me if it doesn't work on your mac. And give me your advice!
Source code is available at: http://tinlizzie.org/olpc/OggPlugin/ogg_plugin.tar.gz
Thank you,
- Takashi
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