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DarkBASIC Discussion / Memblock sounds - they have problems - HELP!!

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Benjamin
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Posted: 12th Mar 2003 02:32
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Hello. I have noticed that when I try and edit sound memblocks, they come out wrong. look at this:


It loads a file, makes a memblock from it, then reads data out of the memblock and writes it back in again in the same place. Why does the sound come out at half the speed and lenght? help me!
xxxpetratxxx
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Richard Davey
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Posted: 12th Mar 2003 02:36
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Because you're missing out all the important header information from the sample:

BitsPerSecond(DWORD)
Frequency(DWORD)
Duration(DWORD)
Sound Data(BYTES)

Don't skip the first 12 bytes, they're important!

Cheers,

Rich

"Gentlemen, we are about to short-circuit the Universe!"
DB Team / Atari ST / DarkForge / Retro Gaming
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Benjamin
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Posted: 12th Mar 2003 02:48
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thanks rich but do you think I could have an example? i have no idea how to do this because I cant get it to work. I just need to know how to make a memblock from a sound, then make a sound from the memblock and play it so that both sounds are the same.


P.S sorry for double posting (accident)

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Richard Davey
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Posted: 12th Mar 2003 02:53
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Change your code so it's for x=0 ... not for x=12 as that will skip the first 12 bytes which are vital because they contain the header information I just mentioned.

Cheers,

Rich

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Benjamin
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Posted: 12th Mar 2003 02:57
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That doesnt work :-(

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Benjamin
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Posted: 12th Mar 2003 02:58
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But look, that doesnt work and I havent even touched the memblock

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Benjamin
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Posted: 12th Mar 2003 03:04
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help me someone pleeeaaaase

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Richard Davey
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Posted: 12th Mar 2003 06:15
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Erm petrat try reading the help files for "save sound" ! They quite clearly state it's for saving a sound that has been recorded with "Record Sound" - hardly what's been done here

Try "make file from memblock" instead.

Cheers,

Rich

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Benjamin
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Posted: 12th Mar 2003 14:26
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that doesnt work either! how do you explain that?

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