Sound Sources

A sound source that fulfills required standards is needed in building acoustics measurements. Brüel & Kjær offers a complete range of sound sources for building acoustics measurements, including our Tapping Machine, and our 12-speaker omnidirectional OmniPower™ Sound Source. The sound sources are ideally matched with our range of Power Amplifiers, which have been specifically designed for acoustic applications, with features such as wireless signal transmission for unhindered measurement range and flexibility.

Type 4720

Echo Speech Source
Echo Speech Source quickly and easily performs speech intelligibility measurements in accordance with IEC 60268-16.
Type 2734

Power Amplifier for building and room acoustics
A power amplifier designed to power sound sources in building and room acoustic field measurements.
Type 2735

Measurement Power Amplifier
A compact, highperformance, 2 × 35 W power amplifier designed for electroacoustic and general-purpose applications.
Type 3207

Tapping Machine / Impact Sound Source
Tapping Machine Type 3207 is an impact sound generator for measuring impact sound levels. The generator uses five hammers each weighing 500 g and operating at 2 Hz dropping from a height of 40 mm, giving an operating frequency of 10 Hz.
Type 4204

Reference Sound Source
Reference Sound Source is optimized for measuring room and building acoustics. It is also useful in the field of building acoustics to determine the sound absorption and sound insulation of a room.
Type 4292-L

OmniPower Sound Source
OmniPower Sound Source Type 4292-L is a a dodecahedral, high-power, omnidirectional loudspeaker designed to measure sound insulation and perform room acoustics measurements.

Sound Sources

Type 4720

Type 2734

Type 2735

Type 3207

Type 4204

Type 4292-L