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speech vocoders on my project

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    I am working on my VoIP project. I am having real difficulties on design my speech vocoders. It should fit into a low cost DSP from Analog Devices or TI that will receive data from a 16 bit A/D – D/A and store it in a flash using some sort of audio compression, (The audio is speech only) then each sample needs to be tagged for later retrieval, meaning it is not A FIFO, we should be able to retrieve any and all audio files stored in flash whenever and also be able to store a small amount of data.
    Any suggestion?

    #27313 Reply

    hi Paul,
    I think a G722 vocoder is a good choice for your case. You can go to this Gao research company to get more infomation. the URL is
    In our project, we use their G729 Vocoder. It’s very good.

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