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 Posted: Dec 31, 2009 - 03:44 AM |
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Joined: Jan 23, 2004
Posts: 6964
Location: Melbourne, Victoria, Australia
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Here we go, a real-time USB speaker using the XPLAIN board. It's very basic, but at least it works! I've opted for just using 8-bit mono (left channel) samples across the SPI bus to the XMEGA, but this could be improved -- but mind the sample rate! At 48KHz, there's a lot of data being thrown to the AT90USB1287, so it's not possible to send dual 16-bit samples to the XMEGA. Premixing into a mono 16-bit might work.
One directory contains the LUFA code to load to the 1287, the other the DAC code to load to the XMEGA.
- Dean  |
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