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Home/ Questions/Q 318515
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Editorial Team
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Editorial Team
Asked: May 12, 20262026-05-12T08:34:35+00:00 2026-05-12T08:34:35+00:00

I have a .wav file and I am using JSpeex (latest version, i.e., 0.9.7)

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I have a .wav file and I am using JSpeex (latest version, i.e., 0.9.7) to encode it, but the encoding is not happening properly if anybody has worked on the file.

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  1. Editorial Team
    Editorial Team
    2026-05-12T08:34:36+00:00Added an answer on May 12, 2026 at 8:34 am

    From here

    You can find the following snippet:

    When I used a different output-file format, specifically the .spx suffix,
    the encoding worked, and so did the subsequent decoding. The final decoded
    PCM WAV file then played successfully in QuickTime Player.

    The original PCM WAV file I started with was "1-welcome.wav" from Sun’s
    JavaSound demo program. If you installed Developer Tools, it’s at:
    /Developer/Examples/Java/Sound/JavaSoundDemo/audio/

    The encoding command-line:

    java -cp jspeex.jar JSpeexEnc -w --verbose 1-welcome.wav welcome.spx
    

    Because it’s 11 KHz, you have to encode using ‘-w’ (wideband), or it will
    fail with an obscure exception.

    The decoding command-line:

    java -cp jspeex.jar JSpeexDec --verbose welcome.spx welcome-pcm.wav
    

    You can read the whole page at the link provided for more info.

    Hope this solves your problem.

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