声源

声源，如冲击发生器、扬声器和功率放大器，专为房间和建筑声学测量而设计。每个音源都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

专业使用需要符合建筑声学测量标准的声源。HBK为房间和建筑声学提供完整的声源，包括我们的攻丝机和12扬声器全向OmniPower™声源。声源是我们系列功率放大器的理想选择，它具有无线信号传输等功能，可为任何声学任务提供灵活的设置，从而保证测量范围和灵活性不受阻碍。

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

攻丝机

功率放大器

USE SCENARIOS

CAPABILITIES

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