Room acoustic measurements require a sound source with a diffuse sound field, which means that the sound energy has to be distributed uniformly. For this reason a sound source with an omnidirectional radiation characteristic is best used for precise measurements.
DS3 Dodecahedron Speaker Set
The DS3 Dodecahedron Speaker is a powerful sound source with omnidirectional radiation characteristics. It consists of 12 loudspeakers of the same type, mounted to a dodecahedron-shaped chassis. The optimized frequency spectrum delivers a high level of equalized sound energy for precise reverberation time measurements. The DS3 is powered by the portable Power Amplifier PA3, which offers a built-in pink noise generator with an equalized output signal. The wireless remote control allows the test signal to be switched on/off from outside of the measurement room.
The Minirator MR-PRO generates a gated Pink Noise with a low crest factor dedicated to RT60 measurements. In addition, the MR-PRO offers the Speech Intelligibility signal and a GlideSweep signal with editable cycle time. All test signals may be replayed via the DS3 Dodecahedron Speaker set.