TheBackShed.com

Home	JAQForum Ver 20.06
Log In or Join
Active Topics
Local Time 02:28 30 Apr 2024	Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : Alternatives

Page 2 of 2

Author

Message

basicchip

Newbie

Joined: 25/11/2014
Location: United States
Posts: 9

Posted: 09:59am 25 Nov 2014

Copy link to clipboard

Print this post

That is I2S, inter-IC sound. A standard method of generating and sending sound around electronics.

There are also Digilent boards that take in I2S and output CD quality stereo. We combined these with an LPC4330 to generate 5.1 audio from USB connection to a PC. The PC was putting out stereo and we were using commercial audio processing algorithms running on the LPC4330 to generate the additional channels. This demo was shown a couple years back at an Embedded Systems Conference.

Basically I2S is typically 24bit stereo serial digital signal, with clock and framing.

Like I say I play with music in the lab.

hitsware
Guru

Joined: 23/11/2012
Location: United States
Posts: 535

Posted: 03:27pm 25 Nov 2014

Copy link to clipboard

Print this post

> a Picaxe 20M2 or 14M2 series microcontroller
> can generate 4 PWM signals but only three of
> these can have independant frequencies

Thank You Goeytex .... Yes Indeedy !

I'll need to work out a subroutine to make
the transition of frequency to period more
facile, but that's O.K.

Page 2 of 2

Print this page

To reply to this topic, you need to log in.