When a microphone is connected to the channel of a multi-channel EMG amplifier, a synchronic voice recording is possible.

Mic4 channel EMG (Ch1 EMG, Ch2 Microphone, Ch3 ThoraxBelt, Ch4 Thermistor)

This allows a comparison of myoelectric activity with the patient’s sound production. Additionally,the recorded instructions and comments of the examiner can be helpful for the interpretation of the stored data. The upper filter cut-off frequency of the microphone should be set to half the sampling rate of the system.


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