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how big is your HEADER

  • 03-02-2010 8:49am
    #1
    studiorat
    Closed Accounts Posts: 6,408 ✭✭✭


    Hi, trying to find a quick answer for these. Can anyone tell me how big the headers are for .WAV and .AIFF files.

    I have a bit of code running at the moment but I need to convert audio to RAW before I play the files. If I knew the size of the header I could just skip over it. I'm asking here because I've got 2 different answers online already.


Comments

  • #2
    dasdog
    Registered Users, Registered Users 2 Posts: 3,810 ✭✭✭dasdog


    studiorat wrote: »
    Hi, trying to find a quick answer for these. Can anyone tell me how big the headers are for .WAV and .AIFF files.

    I have a bit of code running at the moment but I need to convert audio to RAW before I play the files. If I knew the size of the header I could just skip over it. I'm asking here because I've got 2 different answers online already.

    I hope this isnt the 3rd different answer but a quick search for WAV points to it being 44 bytes from a few different sources. This has a breakdown:

    https://ccrma.stanford.edu/courses/422/projects/WaveFormat/


  • #3
    Anima
    Registered Users, Registered Users 2 Posts: 3,945 ✭✭✭Anima


    Yeah its 44 bytes if I remember correctly. Could use libsndfile to extract the audio from a load of different file types as well. http://www.mega-nerd.com/libsndfile/


  • #4
    studiorat
    Closed Accounts Posts: 6,408 ✭✭✭studiorat


    44 it is so. I had got 42 somewhere else.

    Two excellent links there lads thanks.

    I realize I'll need to stick a library in there at some stage to do exactly what libsndfile does.

    Thanks again.

    back just remember being recommended this http://www.un4seen.com/ little better than libsndfile I'm told


  • #5
    Anima
    Registered Users, Registered Users 2 Posts: 3,945 ✭✭✭Anima


    Actually, your right. I think it can very between two sizes. I cant remember the reason though. I think one of the fields of the header can be either 2 or 4 or something like that.

    That does seem like a decent library but it doesnt get much simpler than libsndfile and its highly portable. Although that library seems to run on Win, Linux and OSX. Might try it sometime.


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