Introduction to the Results: Accurately grasping the sound absorption characteristics of sound-absorbing materials is the foundation of acoustic design for performance halls. At the same time, the sound absorption properties of each unit's sound-absorbing material together with the architectural structure of the hall determine the acoustic attributes of the performance hall. Therefore, accurately understanding the acoustic properties of sound-absorbing materials is particularly important for the design and construction of performance halls. Traditional sound absorption coefficient measurement usually consists of three processes: First, measure the reverberation time in an empty room and after placing the material, then calculate the sound absorption coefficient of each frequency band of the sound-absorbing material through two working conditions' reverberation times, and finally organize the data, edit, and print the report. The traditional sound absorption coefficient measurement system cannot directly reflect the sound absorption performance of the material at the measurement site, which is very inefficient for some variable sound absorbers and sound-absorbing materials with adjustable backfill cavities. It is not possible to make timely adjustments on-site during testing to find the optimal acoustic properties. Thus, further search for the optimal operating conditions is conducted. The system measures the reverberation time in a sound-dead chamber and after placing materials using pulse response method, and then calculates the sound absorption coefficient of the sound-absorbing material. After the reverberation time tests under two working conditions are completed, memory data storage technology is used to directly obtain the sound absorption coefficient of the material and generate a test report. The integration of reverberation time measurement, sound absorption coefficient calculation, and report output into one continuous operation within a system allows for immediate acquisition of the material's sound absorption coefficient at the testing site, facilitating timely adjustments to the testing plan to achieve more ideal sound absorption performance. Technical specifications: 1. Simultaneous multi-channel measurement across the full frequency band. 2. Combined with low signal-to-noise ratio measurement technology, the test results are more accurate. 3. Balances between sound absorption coefficient and sound absorber performance testing. 4. Integrates reverberation time measurement, The calculation and measurement report output of the sound absorption coefficient are unified into a continuous operation, which improves test efficiency and facilitates on-site adjustment of the test plan. 5. Supports wireless sensing measurements. Application fields: Testing of acoustic materials for building acoustics, acoustic experimental research.