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ECE 3551 Final Presentation

ECE 3551 Final Presentation - Loop Board ECE 3551 Final...

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Loop Board ECE 3551 Final Project by Brian Robl
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Objectives Use the Blackfin BF533 EZ-KIT to create a 4 track audio looper. - Utilize 32MB of external SDRAM. - Push buttons used to toggle recording off and on. - LEDs signify if recording is enabled or disabled. - Pointers used to record and loop audio.
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Common Uses Musicians use loop pedals to overlay recorded tracks over one another. - Make a fuller sound - Creating songs Djs may use this to mix songs together.
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Recording to the SDRAM SDRAM split into 4 partitions. One for each track. ///////////Right Channel0 Partition//////////////////////// #define pRAMstartR ( volatile unsigned int *)0x800000 #define pRAMendR ( volatile unsigned int *)0xFFFFFC ///////////Right Channel1 Partition//////////////////////// #define pRAMstartR1 ( volatile unsigned int *)0x1800000 #define pRAMendR1 ( volatile unsigned int *)0x1FFFFFC ///////////Left Channel0 Partition//////////////////////// #define pRAMstartL ( volatile unsigned int *)0x00000000 #define pRAMendL ( volatile unsigned int *)0x7FFFFC ///////////Left Channel1 Partition//////////////////////// #define pRAMstartL1 ( volatile unsigned int *)0x1000000 #define pRAMendL1 ( volatile unsigned int *)0x17FFFFC
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Recording Cont.
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