name: MRP
full_form: Mouth Reference Point (artificial head)
context: during the measurement procedure in accordance with the manufacturers specification. It is important that the dynamic range of the test instrumentation is not exceeded. Normally no corrections are made to the uplink reference level. In case it is not possible to perform the above calibration (e.g., a PC card with headset) the manufacturer shall specify the distance between the MRP and the microphone. Figure A.1: Audio breakthrough measurement, calibration set-up for portable equipment NOTE: The EUT is in position during calibration of the uplink, but not during calibration of the downlink where the EUT is replaced by the 1 kHz test audio source. During calibration of the uplink the mouthpiece shall be placed with respect to the MRP in a way representing intended use.
description: The Mouth Reference Point (MRP) is an artificial head used as a reference point for calibrating audio levels during measurement procedures. It helps determine the distance between the MRP and the microphone, especially when standard calibration methods are not feasible.
explanation: The MRP is specifically used in audio level calibration and measurement processes, making it relevant to testing and calibration procedures within telecommunications rather than a core network or service component.
section_title: A.1Calibration of audio levels
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