Sound processing design
daviderovell0 opened this issue · 3 comments
We need to design specifications for the audio processing of bzzzbz video synth.
Currently ADC chip with jack input seems the most reasonable option.
E-mail Dr Porr to see if we can use external sound cards (hats)
Research available hats (important 192kHz, price, in/out?)
OG I2S specification:
https://web.archive.org/web/20080706121949/http://www.nxp.com/acrobat_download/various/I2SBUS.pdf
Pi as an oscilloscope (Kernel building stuff):
https://digibird1.wordpress.com/raspberry-pi-as-an-oscilloscope-10-msps/
Sticky thread on RPi forum re: I2S:
https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=8496&start=575#p604231
I2S GPIO connections to TI PCM1808 ADC:
BCK/SCK - PCM-CLK-18 - pin8 on ADC (BCK)
WS/LRCLK/FS - PCM-FS 19 - pin7 on ADC (LRCK)
SDIN - PCMDIN 20 - pin9 on ADC (DOUT)
- clock, SCKI on ADC which is the "fast clock"