1 year, 11 months ago
via answers.hackaday.com
Can anyone suggest a board / completed project for a midi to sample playback portable device?
What I have in mind ideally is a battery powered pocket sized device that can take midi in and produce polyphonic sample playback from a sample library on an SD card or similar. Must be high quality eg 16 bit or more. I was thinking maybe beagleboard, but it's expensive and overpowered for what I need. Maybe an mbed + DAC? Also, any libraries out there for this kind of stuff? Thanks!
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M$1 Answer
The samples will have to be cached in RAM to do polyphony, so a fair amount of RAM is needed. Most low cost boards don't have any external memory, so they wouldn't work.
To do this on a budget will probably require a circuit of your own design. I would use a Microchip dsPIC33F series chip with a large external RAM chip. Some of the dsPIC33F series chips have a built-in 16 bit audio DAC (oversampled), and they all have DSP instructions that are useful for audio processing.
To do this on a budget will probably require a circuit of your own design. I would use a Microchip dsPIC33F series chip with a large external RAM chip. Some of the dsPIC33F series chips have a built-in 16 bit audio DAC (oversampled), and they all have DSP instructions that are useful for audio processing.
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