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Thread: How to extract info from a .wav file?

  1. Apr 22nd, 2000, 02:27 PM #1
    ande211
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    Does anyone know how to extract data from a .wav file.
    I dl a trial version of a program to convert an mp3 to
    a wave file. But after the 30th time it adds some stuff
    to the file that I don't want. And I need to know how to
    get rid of it. Any suggestions would be appreciared.

    Thanks
    ande211
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  2. Apr 22nd, 2000, 03:11 PM #2
    kedaman
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    Cool

    In the beginning of the file, there are 44 bytes, that tells you what length the file is, the frequency, bit sample rate, and channels. If the length doesn't match the files length, it will not work. The length is stored in two places, in &H100^x style so it's easy to retrieve them. The rest of the file doesn't matter what it contains, cuz it's 16bit or 8bit binary data which means all ascii are used.
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  3. Apr 23rd, 2000, 10:32 PM #3
    ande211
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    kedaman or anyone, help with .wav file???

    kedaman,

    I appreciate your response to my post. But could you show me how I can extract the data from a wave file. Get rid of what I don't need, and only keep what I do need.

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    ande211
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  4. Apr 23rd, 2000, 11:24 PM #4
    kedaman
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    Arrow

    Then you should open the wavfile in binary, get everything from the 45 byte into a string or byte array. Do you need code or something?
    Use
    writing software in C++ is like driving rivets into steel beam with a toothpick.
    writing haskell makes your life easier:
    reverse (p (6*9)) where p x|x==0=""|True=chr (48+z): p y where (y,z)=divMod x 13
    To throw away OOP for low level languages is myopia, to keep OOP is hyperopia. To throw away OOP for a high level language is insight.
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  6. Apr 23rd, 2000, 11:39 PM #5
    ande211
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    Yes I do need some code, if you wouldn't mind.

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    ande211
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  7. Apr 24th, 2000, 12:19 AM #6
    kedaman
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    Code:
        Open File$ For Binary As x#
        filebuffer$ = Space(LOF(x#) - 45)
        Get #x#, 45, filebuffer$
    Close #x
    Use
    writing software in C++ is like driving rivets into steel beam with a toothpick.
    writing haskell makes your life easier:
    reverse (p (6*9)) where p x|x==0=""|True=chr (48+z): p y where (y,z)=divMod x 13
    To throw away OOP for low level languages is myopia, to keep OOP is hyperopia. To throw away OOP for a high level language is insight.
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