DS-0225, DS0225, 3D Sound Intensity Analysis, 3DSI, Sound Intensity, SI

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3D Sound Intensity Analysis Software DS-0225

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3D Sound Intensity Analysis Software

DS-0225A

Features
System configuration
Application of Sound Intensity measurement
Specification
Operating environment

デ-タ画面(3次元バ-グラフ表示)

Sound from moving tire

デ-タ画面(3次元メッシュマップ表示)

Sound radiation from hot water supplier

Finding out the position where the noise is occurring, and grasping the state of acoustic propagation are important ways to find effective noise countermeasure or improvement of acoustic environment.

Measuring the 3D Sound Intensity^*1 near by the sound source is helpful for countermeasure or improvement of noise environment by figuring out the following acoustic trend.

(1)Acoustic energy or acoustic power of the sound source
(2)The detailed sound source position of the target
(3) Flow of acoustic energy radiated from sound source

Features

Consists of the "Sound Intensity Analysis Function" and "Sound Source Probing Function". The former captures the flow of 3D sound and visualizes its directions and amount with 3D displays. The latter is mainly used for measurement and analysis of the sound source position.
3D microphone probe (MI-6420*2) which is unique to Ono Sokki can measure 3D vectors at one time.
Exclusive sound pressure and phase calibrator (MI-0620) keeps the microphone probe to be high accuracy at anytime, which corrects sound pressure sensitivity and phase difference between microphones.
Contour map of every frequency domain, color map, and vector map are obtained as well as 3D spatial map.
Mapping display has the function which displays the measurement result on the image of the measurement target.
Obtained data are collected in one folder for easy and safety backup.
*1 Sound Intensity:Acoustic energy (power) which passes through a specified area at a certain point in sound field in a specified time. Generally, it is expressed by 3D vectors.
*2 Original designed probe made by Ono Sokki. Four microphones are placed in each apex of a regular tetrahedron.

System configuration

Model name	Product name	Q’ty
DS-3204	Data Station Main unit	1
DS-0371	1ch Signal output module (Built-in DS-3200)	1
MX-105	Both ends BNC coaxial cable (5 m)	5
DS-0225A	3D Sound Intensity Analysis Software	1
MI-6420	3D Sound Intensity Probe	1
MI-0620	Sound pressure and phase calibrator for MI-6420	1
MI-0602	Wind shield screen for SI probe (for low range)	1
MI-0603	Wind shield screen for SI probe (for high range)	1
CF-0610	SI microphone amplifier	1
DS-0395	Remote box	1

* A PC that satisfies operating conditions is required separately.

Application of Sound Intensity measurement

1. Measurement of radiated road noise

This application simulates a tire travel testing of a passenger vehicle that radiated sound from a tire is measured by 3D Sound Intensity. You can see that the sound flows to forth and back direction from the tire within the frequency range from 2.5 to 3 kHz.

Tire noise: 2.5 kHz to 3 kHz component

ベクトルマップ

等高線マップ

２. Measurement of sound distribution in an office

In this application, the process that the noise of 2 kHz to 5 kHz band radiated from the ceiling is decreasing is observed. The measurement inside the room shows the sound leakage through the partition wall, influence of the reflection such as floor. These results will be guidance for countermeasures to make the comfortable space.

Noise in the office: 2 kHz to 5 kHz component

3. Measurement of radiated sound from a hot water supplier

It shows the sound is radiated highly from top and bottom surface, and from upper right part viewed from the front.

Radiated sound in a hot water supply room: 600 Hz component

ベクトルマップ

等高線マップ

4. Measurement of radiated sound from display panel

This application measures the sound which is radiated from the front display panel, which is disturbing but not so high sound pressure. The result of sound probing shows that the loud sound is radiated from the middle of the upper part and from slightly left of the center part.

Radiated sound from a display panel: 4 kHz component

ベクトルマップ

等高線マップ

カラ-マップ

カラ-バ-マップ

Specification

3D Sound Intensity Analysis Software: DS-0225A

Analysis method	Cross-spectrum method by regular tetrahedron arranged method
Spectrum data type	AI^3, RI^4, SP (Sound Pressure), PV (Particle Velocity), each spectrum
Measurement frequency range	40 Hz to 5 kHz
Calibration function	Sound pressure sensitivity, phase difference between microphones
Measurement for distribution	Up to 10 planes, 1000 measurement points / planes, measurable in XYZ directions, able to overlap up to 5 kHZ.
Distribution map	Contour map, color map, vector map etc.

*3 ＡＩ : Active Intensity

*4 ＲＩ : Reactive Intensity

MI-6420 (Click here for more details)

Probe	Regular tetrahedron arranged method MI-6420 Overall length: 560mm, weight 300g, cable length 5m as standard Covered from 40Hz to 5kHz 40Hz to 2kHz: 60mm (Gap length adapter in use) 120Hz to 5kHz: 20mm (Gap length adapter in use)
Calibrator	Sound pressure sensitivity correction and phase difference correction by frequency response (MI-0620) Outer dimensions 34(W)x39(H)x183(D)mm Weight:560g Output sound pressure : 94dB (400Hz)

Operating environment

OS	Windows® XP (SP2 or later), Windows Vista® (SP2 or later): 32-bit Windows® 7, Windows® 10 : 64-bit

* Microsoft®, Windows® are trademarks or registered trademarks of Microsoft Corporation in the United States and other countries.

Revised:2017/09/06

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