Sound Quality Parameter Measurement System--Sound Express | Tongji University

Sound Quality Parameter Measurement System--Sound Express

Quickly and accurately measure multiple parameters of building sound quality, suitable for low-noise environments.

Type

Acoustic measurement system

Tags

Environmental & resource tech

Noise monitoring

Physics

Full-band and multi-channel simultaneous measurement

Early-reflected sound

Clarity silver

Reverb time rt60

Solution maturity

Development / Pilot validation

Cooperation methods

Overall transfer

Technology licensing

Face-to-face consultation

Applicable industry

Water conservancy, environment and public facilities management

Applications

Architecture

Key innovations

The innovation lies in the autonomous noise removal model, which can still measure with high precision even at low signal-to-noise ratio; realizes multi-channel full-band parameter synchronous testing, which is efficient and fast; and supports wireless sensing technology.

Potential economic benefits

The system significantly improves test efficiency through fast, high-precision, multi-channel measurement, and significantly reduces time and labor costs. Powerful anti-noise functions reduce the need for retest, broaden application scenarios, and help companies obtain more professional service orders.

Potential climate benefits

Accurately measure and optimize building acoustic design, reduce material waste, reduce energy consumption of acoustic systems, and indirectly achieve carbon emission reduction.

Solution supplier

Tongji University

Tongji University: The national "double first-class" construction university uses advantageous disciplines such as civil engineering, architecture, transportation, and environment to cultivate innovative talents to serve national construction and sustainable urban development.

Shanghai，China

Solution details

Introduction to the results:
Sound Quality Parameter Measurement System-Sound Express was jointly developed by the Institute of Acoustics of Tongji University and Shanghai Yingbo Acoustic Engineering Co., Ltd. The system is used for measurement and analysis of various sound quality parameters of architectural acoustics: reverberation time RT60, early reflected sound m)T, clarity silver C80, clarity D80, intensity factor G, bass ratio BR, stage support factor ST1, binaural auditory correlation coefficient IACC and measured sound energy percentage LF.
The software part of the system is independently developed based on the graphical programming language LabVIEW, and has the characteristics of full-band multi-channel simultaneous measurement, fast test speed and high precision; for sound quality testing in large halls, the system supports wireless sensing technology; combined with the independently developed noise reduction theoretical model, the system can still obtain accurate test results in a low signal-to-noise ratio (20dB) environment.
Technical indicators:
1. Test results are obtained simultaneously for multiple sound quality parameters in one measurement, which is fast and accurate.
2. One measurement covers all frequency bands (63Hz-8kHz) of each sound quality parameter.
3. The test curves and measurement results of each sound quality parameter are displayed at the same time, so that the validity of the test results can be judged in time.
4. Multi-channel simultaneous measurement, high test efficiency.
5. Powerful de-noise and anti-noise functions, and accurate measurement results can also be obtained when the signal-to-noise ratio is 15dB lower than the test specification.
6. Support wireless sensing technology.
Application areas:
This system is mainly used in the field of architectural acoustics. Measurement of sound quality parameters in performing halls, conference rooms, etc.; performance testing of architectural acoustic materials; auxiliary systems and analysis software for acoustic laboratory research, etc.

Last updated

12:16:40, Nov 04, 2025

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