Acoustic Excitation
Generating a high level of noise is reletively easy, but producing a quantifiable, calibrated and accurate source for measurement applications presents a challenge. The source must accurately approximate of a point source or omni-directional monopole. Furthermore, its source strength which is either expressed in applied volume acceleration or inserted sound power, must be known accurately at any time.
Most of the Qsources sound sources provide a real time volume acceleration signal. Volume acceleration or its derivatives volume velocity and volume displacement remain the most stable quantification of airborne emission. Exact volume acceleration is needed for reciprocity, vibro-acoustic modal analysis, and sound power analysis in complex sound fields. And for specific applications it is more efficient to use sound power, which can also be derived from volume acceleration. For those specific applications Qsources provides sound power reference sources.
patented ring radiator sources
accurate volume acceleration signals
extreme light weight
highest power density, compact, sources
Products like the Qmhf address basic and complex measurements in vehicle and other product development. And products like the Qohm and Qoms2 allow efficient and accurate isolation and acoustics in large sites. Each product offers distinct characteristics tailored to specific needs.
The Qmhf, Qmed, Qind2, and Qimf stand out due to their ability to provide real-time volume acceleration signals. The Qref and Qmir are highly stable reference sound power sources. These solutions ensure accurate and reliable results in a broad range of testing scenarios. The Qohm and Qoms sound sources are tailored to ISO-standard defined measurements in building acoustics.
Diameter +- 22 mm, omni-directional source
20-2000 Hz extended frequency range
Power +-85 dB Lw, non equalized-white noise
Real time volume displacement signal
Diameter +- 68 mm, omni-directional source
5-1600 Hz extended frequency range
Power +-100 dB Lw, non-equalized white noise
Real time volume displacement signal
Human body size and diffraction
With diffraction, 10-1000 Hz frequency range
As a monopole source, 10-200 Hz frequency range
Power +-104 dB Lw, non-equalized white noise
Real time volume acceleration signal
Active part +- 30 mm, omni-directional monopole
150-12500 Hz extended freq. range
Power +-109 db Lw non-equalized white noise
High output level suitable for isolation measurements
Real time volume acceleration signal
Diameter +- 265 mm, omni-directional
Weight 3.1 kg, high level and low frequency capable
50-16000 Hz extended frequency range
Power +-122 dB Lw non-equalized pink noise
For large site and building isolation testing
Diameter +-110 mm, omni-directional monopole
Weight 1.7 kg, high level and low frequency capable
50-16000 Hz extended frequency range
Power +-112 dB Lw non-equalized pink noise
Broad bandwidth monopole approximation
Diameter +- 110 mm, hemi-sphere monopole
Light weight 1.5 kg, long time level accuracy/stability
50-10000 Hz extended frequency range
Power +- 92 dB Lw, equalized pink noise
Constant volume acceleration and power reference
High accuracy following ISO6929 in the core frequency range
Range of amplifiers, tuned to sources/shakers
Compact, light weight at +-1.7 to 2.6 kg
Power +- 700 Watt
Core freq. range 5-40000 Hz
From base version to processor controlled DSP
High accuracy, single channel measurement amplifier
Compact at +- 3.5 Kg weight
Power+- 700 Watt
Core frequency range 5-40000 Hz
Intuitive controls
