Clock synchronization on xcore mic array
Posted: Sun Nov 05, 2017 4:15 am
We are using the xcore microphone array with a linux development board (i.mx 7). It appears as a USB audio device with 8 inputs and 2 outputs. We are measuring the round trip latency through the DAC -> Loudspeaker -> Microphones. We are seeing the round trip latency varying over time. When we repeat the test on the PC with the Thesycon drivers, then the latency is constant.
Are the microphones and DAC on the xcore board locked to the same clock? Is there anything that you can think of that would causing time varying latency in the system?
Are the microphones and DAC on the xcore board locked to the same clock? Is there anything that you can think of that would causing time varying latency in the system?