DS-2000 Frequently Asked Questions
Question number FAQ-0697
Example of Use 4: Measurement of Acoustic Power Level
The measurement method for acoustic power level measurement in semi-anechoic rooms according to JIS Z8732 and in reverberation rooms according to JIS Z8734 is based on a multi-microphone system using Graduo, allowing for simultaneous sound pressure measurement. It enables high-precision acoustic power level measurements in a short time. It supports configurations from a few microphones to many, with total and flexible combinations including microphone fixtures, microphone stands, and analysis software. Operation is easy on a personal computer with Windows OS. The analysis results can be confirmed on the monitor, and graphs and numerical lists can be printed to view the acoustic power level in various forms.
1. Octave band or 1/3 octave band sound power level 2. A-weighted sound power level 3. Average sound pressure level 4. Directional characteristics
Structure Diagram
■ Equipment Configuration
| Product Name | model name | Remarks | |
|---|---|---|---|
| 1 | Microphone | MI-1233 | 20 to 20 kHz wideband microphone |
| 2 | preamplifier | MI-3110 | Constant Current Compatible BNC Output Preamplifier |
| 3 | extension rod | MI-0311 | |
| 4 | Piston Book | SC-3100 | for microphone calibration |
| 5 | 4-channel main unit | DS-2104 | |
| 6 | 4 channel input unit | DS-0264 | |
| 7 | Sound Power Software | DS-0231 | JIS and ISO compliant sound power level measurement software |
| 8 | PC/AT personal computer | Windows 95/98/2000 | |
| 9 | printer | ||
| 10 | microphone fixing fixture |
Specifications
JIS Z 8732 ~ 34: Methods for Measuring Sound Power Levels
ISO 3740 Series: Determination of sound power levels of noise sources.
ISO 7779 ：Measurement of airborne noise emitted by informationtechnology andtelecommunications equipment.
Measured the acoustic power level of the speaker up to 5 kHz in 1/3 octave bands.
Last updated: 2000-10-13