diff options
author | jmvalin <jmvalin@0101bb08-14d6-0310-b084-bc0e0c8e3800> | 2002-05-16 23:16:33 +0400 |
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committer | jmvalin <jmvalin@0101bb08-14d6-0310-b084-bc0e0c8e3800> | 2002-05-16 23:16:33 +0400 |
commit | ead18eaed8cd28a8fd9152fff0c51c50bdd17384 (patch) | |
tree | d9370d94379ea730787016bfbbaf85a016885dff /README | |
parent | 8acd4facc9c20b9c1002650fd8ffc9b13d6d535b (diff) |
Wideband quantization improved by adding a sub-frame gain, codebook
re-trained.
git-svn-id: http://svn.xiph.org/trunk/speex@3308 0101bb08-14d6-0310-b084-bc0e0c8e3800
Diffstat (limited to 'README')
-rw-r--r-- | README | 22 |
1 files changed, 20 insertions, 2 deletions
@@ -7,8 +7,26 @@ IP (VoIP). In some sense, it is meant to be complementary to the Ogg Vorbis codec. Although we aim at providing a patent-free codec, we strongly suggest you -have a look at patent issues if you are thinking of using Speex -commercially. The speech coding field is a real patent mine field and +have a look at patent issues if you are thinking about using Speex +commercially. The speech coding field is a real patent minefield and the scope and enforceability of all these patents is sometimes unclear, not to mention that each country has different laws. +To use Speex: + +% speexenc [-n or -w] input_file.sw compressed_file.spx + +% speexdec compressed_file.spx output_file.sw + +where -n is for narrowband (8 kHz sampling) and -w is wideband (16 kHz +sampling). + +All audio files are assumed to be raw (no header) 16-bit PCM files. To +convert a .wav file into this format: +% sox my_file.wav -t sw my_file.sw + +Note that if the original sampling frequency of the wav is not 8 kHz or 16 kHz, +you will need to add "-r 8000" or "-r 16000" (without the quotes). + +To create a .wav file: +% sox -t sw my_file.sw my_file.wav |