Has anyone successfully used 31,000hz for an extended period of time? While working on the optical calibration routine I’ve started to get really annoyed by the motor whine. The ‘silent’ 31kHz is so much nicer on the ears 
Has anyone successfully used 31,000hz for an extended period of time? While working on the optical calibration routine I’ve started to get really annoyed by the motor whine. The ‘silent’ 31kHz is so much nicer on the ears