In addressing everyday noise and abnormal sounds emitted by machinery, technologies that visualize the location and distribution of sound sources play a crucial role. Conventional sound source visualization devices using beamforming methods typically require 16 to over 100 microphones, resulting in large microphone arrays and often high system costs.
Ono Sokki has developed the MI-5420, a sound source visualization microphone probe that is more compact than conventional products and supports a wider frequency range, thanks to its 4-channel microphone configuration. Even with a small number of microphones, the MI-5420 enables sound source visualization using a unique beamforming calculation method, keeping the microphone probe length to approximately 35 cm. Furthermore, by using separate probe heads for high and low frequencies, the visualizeable frequency range has been expanded from the conventional 1000 Hz to 5000 Hz to 5000 Hz. In addition, the microphone amplifier required in Ono Sokki 's conventional systems is no longer necessary, resulting in improved portability and reduced implementation costs.
The two types of sound source visualization microphone probes allow you to change the probe head depending on the application, using either a high-frequency or low-frequency probe head. The high-frequency probe has a microphone spacing of 60 mm and supports frequencies from 1000 Hz to 8000 Hz. The low-frequency probe has a microphone spacing of 120 mm and supports frequencies from 500 Hz to 4000 Hz. We have addressed the frequently requested frequency bands below 1000 Hz and above 5000 Hz for sound source visualization.
The system consists of a DS-3000 series data station, a sound source visualization microphone probe MI-5420, and a personal computer. This system makes it easier to locate sound sources such as automobiles, railways, home appliances and other machinery, electrical and electronic components, roads, tunnels, pumps, and motors.
[Features]
The sound source visualization microphone probes are available in low-frequency microphones (500 Hz to 4000 Hz) and high-frequency microphones (1000 Hz to 8000 Hz), enabling measurement over a wider frequency range (our previous product was 1000 Hz to 5000 Hz).
By miniaturizing the microphone probe to a total length of approximately 35 cm, measurements can be taken even in confined spaces such as the interior of a car.
Using the remote control, you can start, stop, and save measurements while holding the microphone.
No microphone amplifier is required, resulting in reduced initial costs and easy portability.
Real-time monitoring software enables sound source detection across the frequency range (500 Hz to 8000 Hz) of both low-frequency and high-frequency microphones.
