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PWM data file from *.wav file Dk-tm4c129x

utpal kumar
Expert 2340 points
Other Parts Discussed in Thread: LM3S6965

Dear All,

I have got the Tiva C series developmet board DK-TM4C129x. I have develop our Fingerprint Software.

 I also got the TM4C1294xk kit. Presently we use this kit.

 I stuck with generating audio sound. The given example we donot generate audio sound.

 Basically  we want to generate PWM data file from *.wav file & it specification for using in Tiva board.

kindly advice!!

  • 0
    TI__Guru**** 244400 points

    Hello Utpal

    I presume the intent is to convert a predefined wav file to PWM pulse that can be played over a buzzer? Do note that if you are doing this would involve DSP algorithm. There are some articles on extracting the frequency information from a wav file (though not necessarily in CM4), that you may want to research first.

    It is not clear as to what the end application looks like, so the above information may be subject to change.

    Regards

    Amit

  • 0 in reply to Amit Ashara
    Expert 2340 points

    Dear Amit Sir,

    Hope you are doing good !!

    The project is Finger print scanner based attendance system ,Where i am trying to implement the voice commands like "put your finger" / you are authorized / capture time exceeded etc.

    We have previous working solution on LM3S6965 and on LM3S9B92 .

    Our old sound & audio files are working with PWM signals

    i just need your help in generating  the “C source” data file from .wav or .mpg2 etc audio files.

    Kindly advice !!

  • 0 in reply to utpal kumar
    Guru 86745 points

    utpal kumar said:

    We have previous working solution on LM3S6965 and on LM3S9B92 .

    You are able to implement voice recognition using these Stellaris microcontrollers? Are you just outputting audio?

    I have seen some links in the internet using BeagleBone Black with voice recognition.

    - kel

  • 0 in reply to Markel Robregado
    Guru 26105 points

    Hi, 

    Voice processing software is present in StellarisWare distribution, even for 9B92/96...

    But it wood need for an I2S interface...

    Petrei

  • 0 in reply to utpal kumar
    TI__Guru**** 244400 points

    Hello Utpal

    If the already method of the using the wav to PWM works on LM3S then it should be the same for TM4C. Unless you are using I2S, then it may not work.

    On LM3S devices, what are you using for PWM pulse generation.

    Regards

    Amit