Design ideas

[ BeagleBone Black ] [ TMS320C5515 ][ TLV320AIC3101 ] [ TPA2012D2 ]

[ cape files ]

Modules- high-level (2)

Codecs

The basic goal is to go from analog inputs to the DSP, and back to the real world! And of course, there are more complex codecs with in-built pre-amps and mic biasing support (preferable!)

CS4270[ CS4270 ]

 

 

Low-Power Stereo Codec with 6 Inputs, 6 Outputs, Speaker/HP Amp and Enhanced Digital Effects - TLV320AIC3101

[ TLV320AIC3101 datasheet ]

  

[ CS4265 ][ CS4245 ][ CS4207 ]

[ CS42L51 ][ CS4272 ]

DSPs

The “heart” of our shield, giving microprocessors the audio equivalent of the improbability drive “warp drive”: executing millions of instructions every second…

[ SigmaDSP ]

ADAU WIP (04.01.2015) #3

  • ADAU1701 [ potential app ]
  • audio (automotive)
  • Drag and drop design tool (makers would be happy, hackers not so much)

[ C55x ]

[ SHARC ]

  • high end audio
  • possibly overkill for this project, but we have to get to it sometime!

[ BlackFin ]

  • This [ design ] uses MEMS mics!
  • speech/image/video processing

Microcontrollers

PCB milling

[ Lining Yao ]

[ SMT breakout ]

Unused audio inputs on a chip? AC couple to audio ground (caps!) [ source ]

Lazer cutting [ mylar ] for making a soldering stencil.

Dr Anderson’s PCB design tips

  • 4 layers might help with isolating the analog inputs (shield between ground planes?)
  • Having fewer, more complex ICs doesn’t mean that the PCB would have to be more involved. Things might just get simpler with all the integration.

Reference Designs

[ DSP shield ] [ DSPdap ]
[ Sparkfun codec ] [ Adafruit codec ] [ Adafruit WAV shield ] [ Adafruit mp3 shield ]
[ nootropic audio hacker ]

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