I understand that digital audio has both a sample rate (time "discretization") and a bit depth ("amplitude" discretization). Also, it can have multiple channels (stereo would be 2 channels).
But things that I can't find readily in the internet:
- What is the range that is discretized in the bit depth? My experience is in motions, so I know if I have an accelerometer with a range of +-10 g's, and I discretize it in 8bit, well I would have a resolution of 20g/256. What would be the equivalence in audio?
- Matlab's Simulink has a block for reading audio. It's output has the dimensions of MxN(xTime), where M is the number of "consecutive samples" and N the number of channels. What is "consecutive samples" (also called in the same help file as "Frame Size (samples)"). If I set this value to one, I would get what I would expect from a Mono sound, just a time history of amplitudes. But if I set it to two, it's almost as if they are both the same with minor differences in fast transitions. Is this meant for to get a average of the signals to be somewhat more "true to sound"?
Here is the link for Simulink's block: http://www.mathworks.com/help/dsp/ref/fromaudiodevice.html