## page was renamed from MICrODECIndex ==== About MICrODEC ==== MICrODEC is a work in progress (and probably always will be). It is an open-source platform for Digital Signal Processing (DSP) that is approachable for those familiar with programming Atmel microcontrollers. For those unfamiliar, we hope its a fun excuse to learn. The hardware itself is of moderately high quality (44.1ksps, 16bit, stereo, -96dB noise, 3Hz - 18kHz frequency response), and has built in features for use with audio effects (wet/dry mix, feedback, mic./instrument/line level inputs). Because of the high data rate, the MICrODEC does not allow for as much processing time as low-end ADC to PWM style microcontroller audio interfaces, but, with 6 seconds of sample time, plenty of useful functions can be executed in the ~400 free clock cycles per sample. And, at a lower cost in comparison to high-end DSP units, it provides a good platform for sound installations where more than a few units may be required. ==== Features not yet implemented ==== The current MICrODEC implementation is fun to use, but there are a number of things that would make it even better. * Internal USB - There is currently an FTDI cable header onboard, but it would be far more convenient if the case did not need to be removed to take advantage of it. * Bootloader - Once there is USB, there can be bootloader! This would allow for downloading and trading of MICrODEC programs by those who aren't interested in the details of AVR programming. * MIDI - An optional MIDI board would allow the MICrODEC to be controlled by external pedals, synths, and computer software. Sample MIDI code has been written and tested, so merely a break-out board is required. Currently, there is only one USART for both MIDI and USB, so a solution to allow for both is needed. * Arduino Compatibility - Although this would seriously reduce the full power of the processor, it would also allow for a wider user base. * C Code - The current assembler needs to be ported to C for those who are into such things. ==== Things to put on this page, or subpages ==== * information about the processor * about the codecs * links to hardware, software revs * who's in charge of what * goals and suggestions for the future * major issues that need to be addressed * minor issues * links to artists and recordings using the microdec * facts and thoughts about software interchangability ==== Software page by page ==== (this section to receive more treatment) [[AudioInt4Asm|AudioInt4.asm]] ==== Documentation can be downloaded here ==== Files: Beta Release * [[attachment:MICroDEC_board.png|board image]] * [[attachment:MICroDEC_schem.png|schematic image]] * [[attachment:microde_board.brd|board eagle file]] * [[attachment:MICroDEC_schem.sch|schematic eagle file]] * [[attachment:microdec_library.lbr|library eagle file]] * [[attachment:microdec_pcb.zip|pcb gerber files]] * [[attachment:audioint4.zip|current firmware]]