Product Introduction: The Sound Express audio quality parameter measurement system was jointly developed by the Acoustics Research Institute of Tongji University and Shanghai Yingbo Acoustic Engineering Co., Ltd. This system is used for measuring and analyzing various audio quality parameters in architectural acoustics, including Reverberation Time RT60, Early Reflections m)T, Clarity Index 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, featuring simultaneous multi-channel measurement across the full frequency band with high speed and precision; for larger hall acoustic testing, the system supports wireless sensor technology; combined with an independently developed noise reduction theoretical model, This system can still obtain accurate test results in a low signal-to-noise ratio (20dB) environment. Technical specifications: 1. Multiple audio quality parameters are tested simultaneously in one measurement, with fast testing speed and high accuracy. 2. A single measurement covers all frequency bands of the audio quality parameters (63Hz—8kHz). 3. The test curves and measurement results of each audio quality parameter are displayed at the same time, allowing for timely judgment of the validity of the test results. 4. Multi-channel simultaneous measurement, resulting in high test efficiency. 5. Strong noise reduction and anti-noise functions, ensuring accurate measurements even when the signal-to-noise ratio is below the test specification by 15dB. 6. Supports wireless sensing technology. Application fields: This system is mainly used in the field of building acoustics. Measurement of audio quality parameters in performance halls, conference rooms, etc.; performance testing of building acoustic materials; auxiliary systems and analysis software for research in acoustic laboratories, etc.