丹麦BK TYPE4227 仿真嘴 MOUTH SIMULATOR 模拟嘴

用于准确模拟人声场，测量送话器和近讲麦克风的频率响应及失真。
4227-A型内置D型功放，可直接接信号源使用。
4227型使用时需由2735型功率放大器驱动。

产品货源

Bruel & Kjaer的所有产品均为丹麦原产

ENARIOS

• Quality control testing of frequency response and distortion of telephone transmitters and close-talking microphones
• A sound source for acoustic measurements
• Testing of smart devices, phones, speakers, etc

Provision exists for fitting a microphone at the mouth opening, for use in a compressor loop to give constant sound pressure output. Accurate calibration is facilitated by a calibration jig provided with this product.

FEATURES

• Accurate and very consistent simulation of human voice field
• Built-in class D amplifier (Type 4227-A only)
• Continuous SPL of 110 dB at 25 mm from lip ring
• Low distortion
• Built-in overload protection circuit
• Optional regulating microphone for very accurate frequency
• Response control
• Calibration jig included
• Low sensitivity to temperature and humidity changes

The mouth simulators are high-performance, low-distortion sound sources used for testing acoustic transducers. They consist of a high-quality loudspeaker mounted in a specially shaped housing. A lip ring is mounted on the upper surface of the unit, providing a convenient reference plane for measurements.

Type 4227-A has a built-in class D amplifier that simplifies setup and minimizes thermal output, allowing the use of the mouth simulator in small test chamber installations while avoiding heating of tested components.

丹麦B&K测量放大器TYPE2716C功率放大器BK2669ABK41912716型功率放大器有两个可单独使用或联合使用的通道（利用连接A+B和相位反转B开关）。输入水平要求与2260D型InvestigatorTM产生的信号相匹配。输出功率约为300W，同时与负荷相对独立；这样就能满足在安全的范围内运行OmniPower声源4296，确保不会损坏扬声器。2716型提供占空比为1/3的输出功率，这与建筑声学测量中的典型运行模式相匹配。



相对于输出功率，2716型功率放大器体积小且重量轻。它的功能和保护电路，通常只会在更高功率放大器上才会具有。这使得它成为同级产品中少数真正的*性的功率放大器。8个150瓦的双极功率晶体管组成互补的输出输入状态，这些晶体管都通过金属直接安装在铝制散热片上。因此可以只需被动冷却，不用（吵闹的）冷却风扇

深圳市泰利信电子有限公司，位于深圳.龙岗

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