I think I’ll be needing few experienced help here It is more an intellectual personal challenge than a real project, but I try to fill the gap between evaluation boards like RPi and OrangePi and Full Digital amps like those developped by TI and ST, in the context of multi amplified speakers (with Crossover function in soft DSP).
I2S is the common input for the FDA chips. My understanding is that I2S can only address 2 audio channels, and this is a roadblock on my way.
How to control several I2S inputs from one single board (RPi or other) ?
I have not seen additional modules to add more I2S connections.
I have not seen ways to multiplex more than 2 channels on one I2S...
With USB, it often looks like RPi USB => USB decoder=>SPDIF=>I2S (and only 2 channels...): lot of transformations, risks of time mismatch, lots of cables for 8 channels (ex of 2 x 4 ways speakers)...
I'm surprised as many applications are now 7.1. HDMI has 8 channels...
Do I work with wrong assumptions?
Do I take the problem in the wrong way? Other ways to explore?
I2S is the common input for the FDA chips. My understanding is that I2S can only address 2 audio channels, and this is a roadblock on my way.
How to control several I2S inputs from one single board (RPi or other) ?
I have not seen additional modules to add more I2S connections.
I have not seen ways to multiplex more than 2 channels on one I2S...
With USB, it often looks like RPi USB => USB decoder=>SPDIF=>I2S (and only 2 channels...): lot of transformations, risks of time mismatch, lots of cables for 8 channels (ex of 2 x 4 ways speakers)...
I'm surprised as many applications are now 7.1. HDMI has 8 channels...
Do I work with wrong assumptions?
Do I take the problem in the wrong way? Other ways to explore?