声源

用于室内和建筑声学测量的冲击发生器、扬声器等声源和功率放大器。每个声源均确保完全符合国家和国际标准。

Fine tuning acoustic isolation in buildings

声源和放大器

专业用途需要一种符合建筑声学测量标准的声源。HBK 提供全系列适用于房间和建筑声学的声源，包括我们的打击器和十二面体全向声源。这些声源与我们的功率放大器系列配合非常理想，提供灵活的设置，适用于任何声学任务，其特点包括无线信号传输，可实现无障碍测量范围和灵活性。

Reference Sound Source is intended for use as a reference source for determination of the sound power output of equipment by the various comparison methods including the method described in ISO 3741, and by the survey methods described in ISO 3747.

USE SCENARIOS

Comparison method for determination of sound power of noise sources according to ISO 3741
Substitution and Juxtaposition methods for determination of sound power of noise sources according to ISO 3747
Sound absorption measurements
Sound insulation measurements

Reference Sound Source uses a specially designed centrifugal fan driven by a powerful asynchronous motor. The motor is of the external rotor type, and due to the high moment of inertia of the rotor it has a very constant speed of rotation. The motor is mounted on a cast aluminium base, shaped to minimize reflections. The complete assembly of motor and fan is mounted in a cylindrical safety grid fitted with two carrying handles.

Additional features of the compact and rugged product include long-term stability, an individual calibration chart and a safety grid.

CAPABILITIES

Fulfills ISO 3741, ISO 3747 and ISO 6926 for calibrated sound power sources
Frequency range from 100Hz to 20 kHz
Sound power output 91 dB re 1 pW (A-weighted, 50 Hz line frequency) and 95 dB re 1 pW (A- weighted, 60 Hz line frequency)
Temperature range –10°C to + 50°C
50 and 60 Hz operation

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声源

扬声器

打击器

功率放大器

USE SCENARIOS

CAPABILITIES

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