Systems, devices and methods for transmitting electrical signals through a faraday cage

A conduction microphone comprising:

• a plurality of connected segments defining a band that conforms elastically to a portion of the body;
• wherein adjacent segments are connected through an elastic connection mechanism such that distributed pressure is applied by the segments over at least a portion of the length of said band when said band is worn;
• and
• wherein at least one segment comprises a microphone configured to detect audio signals via contact with the body.

A method of performing controlling the transmission of audio signals detected by a microphone in the presence of gradient noise from a magnetic resonance imaging scanner, the method comprising:

• monitoring audio signals detected by a microphone;
• processing the audio signals to obtain filtered audio signals within one or more frequency bands that are selected to avoid frequencies associated with gradient noise;
• processing the filtered audio signals within the one or more frequency bands to determine whether or the audio signals satisfy criteria associated with the presence of voice;
• in the event that the filtered audio signals satisfy the criteria, transmitting the audio signal.