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Author Topic: MP3@64 stuttering and skipping  (Read 5460 times)

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Offline alexh

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Re: MP3@64 stuttering and skipping
« on: June 10, 2009, 07:10:01 AM »
Quote from: Daedalus;510278
I'm currently using a MAS player for an ongoing MP3 jukebox project, and I might consider going the MP3@64 route if it's less CPU hungry than the current parallel port transfers...
The only CPU power I can imagine is used in MAS is accessing an IDE hard drive. If you have a DMA capable hard drive then it should be very little.

The same overhead will be present if you switched to MP3@64
 

Offline alexh

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Re: MP3@64 stuttering and skipping
« Reply #1 on: June 10, 2009, 11:57:13 PM »
Quote from: Daedalus;510326
all the data has to be converted in software to serial for the I2C bus that the MAS chip requires.
MP3's down a 1-bit serial interface? I'm not sure what the Amiga parallel port is capable of, but I would imagine you could pre-process your MP3's into I2C files you can DMA.

For a fixed rate MP3 that could be 192Kbaud, what is the maximum rate of the Amiga parallel port?
 

Offline alexh

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Re: MP3@64 stuttering and skipping
« Reply #2 on: June 11, 2009, 07:41:07 PM »
Interesting stuff... didnt know there was no DMA to parallel port. Damn that's a bit of an oversight. I am sure there must be a technological reason why not.