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

 
 
 
 

Leading noise and vibration excitation technology