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AWA6150A High-Fidelity Mouth Simulator
Mouth Simulator
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AWA6150A High-Fidelity Mouth Simulator

International Standard Compliance— Fully conforms to IEEE 269, IEEE 661, and ITU-T Rec. P.51, ensuring test results are internationally recognized, authoritative, and comparable across laboratories.

Realistic Human Speech Simulation— Precisely reproduces the acoustic characteristics of natural human speech, providing a true-to-life excitation source for communication device testing.

Built-in High-Gain Power Amplifier— Integrated amplifier circuit delivers approximately 4x gain, eliminating the need for external amplification equipment and simplifying test system setup.

High Sound Pressure Output— Continuously generates a minimum of 100 dB SPL (0 dB = 20 μPa) at the Mouth Reference Point (MRP, 25 mm from the artificial mouth's sound output plane), meeting demanding test requirements.

Low Distortion Performance— Equipped with a high-quality loudspeaker unit to ensure low distortion output, guaranteeing accurate and reliable measurement data.

Convenient Standard Interface— Features a BNC connector for direct connection to standard external signal sources, offering simple operation and broad compatibility.

Ideal for Professional Use— Well-suited for telecom equipment manufacturers, testing/certification laboratories, and research institutions performing performance evaluation and quality control of telephone terminals, microphones, and related voice-capture devices.

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      IEC61672
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    Product Description

    The AWA6150A  Mouth Simulator is a sound source designed to simulate human speech.
    It features a built-in power amplifier circuit and is used to test the sensitivity and frequency response of telephone transmitters and microphones, as well as telephone sending loudness ratings. Compliant with IEEE 269, 661, and ITU-T Rec. P.51 standards, the AWA6150A incorporates a power amplifier (providing approximately 4x gain) and a high-quality loudspeaker. It is capable of continuously generating a minimum sound pressure level (SPL) of 100 dB (0 dB = 20 μPa) at the Mouth Reference Point (MRP)—defined as 25 mm from the plane of the artificial mouth's sound output—and accepts standard external signals directly via a BNC connector. Key features and applications include:
    1) Testing telephone sending loudness and the sensitivity/frequency response of transmitters and microphones;
    2) Serving as a sound source for acoustic measurements;
    3) Accurately simulating human speech;
    4) Minimum continuous SPL of 100 dB (0 dB = 20 μPa) at the MRP;
    5) Low distortion;
    6) Compliance with IEEE 269, 661, and ITU-T Rec. P.51 standards.

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    Main Performance Indicators

    AWA6150A High-Fidelity Mouth Simulator

    Continuous output sound pressure level

    At the MRP, within the 100 Hz–10 kHz range,

    the minimum continuous sound pressure level is 100 dB (0 dB = 20 μPa)

    Distortion

    At the MRP, with an output sound pressure level of 100 dB

    (300 Hz–10 kHz), it is less than 2%; with an output sound pressure level of 100 dB

    (100 Hz–300 Hz), it is less than 5%.

    Speaker rated power

    15W; built-in amplifier power: 25W

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