On newer Macs, the audio input from an external microphone plugged into the headphone jack (on a pair of wired Apple EarPods, for example) does not add any noticeable latency.
However, the audio input from the built-in microphone adds considerable (~30ms) latency. I imagine this is due to system-supplied signal processing that reduces background noise.
Is there a way of bypassing this signal processing and reducing the latency?
On iOS, there is an AVAudioSessionModeMeasurement mode that disables signal-processing and lowers input latency. Is there an equivalent for MacOS?
FYI, on the 2015 MacBook Pros, there is no noticeable added latency on the built-in mic. This is an issue that affects newer computers, including the M1 line.
