6 Nov
2015
6 Nov
'15
2:17 p.m.
On November 6, 2015 11:55, Mark Brown wrote:
I can envisage in a system you may want to choose which capture channels can trigger level detection (if any), and this may change depending on the use-case at the time, so having it as a control makes sense to me.
What is a "capture channel" here?
Input filters 1L/R and 2L/R, which are fed from either Mic1(ADC1) or DMic1L/R and Mic2(ADC2) or DMic2L/R.
Hang on, is this just recording a DC value with the ADC and then looking at that?
The RMS of the Mic signal is taken and compared to the trigger level set. If it's above that level then an IRQ is raised.