As an aid to those who are interested in hearing their own speech encoded/decoded by Codec2, I've written a Windows-based demonstration program:
http://code.google.com/p/codec2demo/ Using the soundcard(s) on the PC, it allows one to speak into a microphone and hear the result in real-time via the speakers. One can turn Codec2 on and off to allow a comparison of the codec with uncompressed audio. Note that using a headset / handset is prudent, as sound feedback may result if the speaker feeds directly into the microphone. Because of the export issues raised previously, I'm bundling a version of Codec2 Revision 289 (which is 2500bps only). The included Revision 289 Codec2 code has been tweaked to use the same API calls as Revision 310 (which supports both 1400 and 2500). The demo program is compiled with MinGW (which is available under both Windows and Linux). In addition to running under Windows, it seems to work just fine under Wine under Linux. Your mileage may vary. Any volume adjustments (both "Playback" and "Record") must be made via the normal Windows method (e.g. double-click the speaker symbol in the bottom right corner of the screen). Please don't ask about a Linux/MacOS/Amiga/Android etc. version; the source code is provided, so someone else is welcome to create their own tool. Usage is: Run the program Select the Input and Output soundcard devices of choice Press the Start button Adjust the Windows volume controls to suit Listen to the results as one chooses between uncompressed and Codec2 Press the Stop button when finished ------------------------------------------------------------------------------ Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
