[sdiy] Raspberry Pi 2 Synthesizer Project

[Phillip Harbison]

Scott Gravenhorst wrote:
> I also have the Cirrus Logic/Element14 sound card (24 bit
> stereo up to 192 kHz. Line-in, line-out, S/PDIF and other
> features).

Is this the card you're using?

http://tinyurl.com/Element14CirrusLogic

I'm currently evaluating I/O cards (shields) for RP, Arduino,
and other SBCs. I'm curious to know if you considered other
audio cards such as the Wolfson Audio card available on that
same site. What are you doing for MIDI? I've found some very
inexpensive Arduino MIDI shields, some in kit form.

> So far, using ALSA, I've made an organ type polysynth (32
> voices).  Each voice is computed arithmetically as
> y=sin(a)+sin(2a). [...]

Would you mind sharing your code?

> I'm quite impressed by the power of this little thing,
> especially for a $35 computer board.

I'm currently evaluating SBCs similiar to the RPi including
some that have as many as 8 ARM cores. The Cubieboard4 is one
such board. In addition to 8 cores it also has 2GB RAM and
built-in WiFi. The price is around $100.

I look forward to hearing more about your project. Thanks!

-- 
Phil Harbison
http://www.xavax.com/IoT/
https://www.facebook.com/groups/Atlanta.IoT/