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  1. #1
    Registered User
    Join Date
    Mar 2003
    Posts
    2

    how to play raw audio?

    Hi all,
    I did some audio recording using the raw audio format using the emulator, but the Windows's sound recorder does not recognise it. I have some questions.

    what is raw audio?
    what is the file extension?
    which application can I use to play it?

    I have tried recording in wav format. however, the playback is jerky. it seems the recording is no good. why is this so? how can I improve it?

    Thanks.

  2. #2
    Regular Contributor
    Join Date
    Mar 2003
    Posts
    132

    RE: how to play raw audio?

    Hi,

    Raw audio usually means pure audio data (uncompressed pcm), and the file contains no information about the sample rate, sample length (8/16 bit), byte endianness etc. Therefore, a player cannot play the raw audio correctly unless these parameters are defined. Wav file on the other hand contains all the relevant information in its header part.

    The codec used (uncompressed, ADPCM, ALaw, Mulaw etc.) when recording in wav format can make a difference in file size, but it shouldn't have any big effect on playback smoothness. For example, a good choice is to use a 8kHz mono wav, encoded with ADPCM codec.

    Regards,
    FN Developer Support

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