ruffrecords
Well-known member
Thanks for the tip. The I2S interface plus the extra memory is just what the doctor ordered for audio applications. I'll be ordering one today.
Cheers
Ian
Cheers
Ian
leadbreath said:hey ian
i believe arduino already have a audio analyser set up.
Not sure how effective it is though, you might want to have a quick look.
mick
ruffrecords said:Thanks for the tip Mick. At first sight it looks like the Arduino just does the display. The data crunching and FFT is done on a PC. I was hoping to do it all under one roof so to speak.
Cheers
ian
leigh said:Looks like it is definitely possible to do that kind of number crunching on board with the Pi. This project claims it's running a 2048 point FFT analysis (to drive a 5 segment LED display, derp, but the display could be improved upon with Pi's HDMI output):
https://learn.adafruit.com/raspberry-pi-spectrum-analyzer-display-on-rgb-led-strip/page-1
mgriffith said:I've been looking at the Olimex open source https://www.olimex.com/Products/ARM/ST/STM32-H107/ which seems to support I2S, and has a lot of I/O.
culteousness1 said:mgriffith said:I've been looking at the Olimex open source https://www.olimex.com/Products/ARM/ST/STM32-H107/ which seems to support I2S, and has a lot of I/O.
You better skip that Olimex board and get yourself a STM32F4Discovery.
It costs about € 15 at Farnell and comes with two I2S interfaces among other peripheral.
Cheers,
Carsten
ruffrecords said:That looks very interesting. I has a built in DAC which could be used to generate the stimulus and a spare I2S input that could be connected to a high quality ADC for capturing data. The other thing I like about it is it is not overburdened with a general purpose OS. Looks like you have complete control at the lowest levels.
dirtyhanfri said:I was thinking yesterday, if we could use a Raspberry pi with a QantumAssylum QA4000 that could make a fancy analyzer,
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