The sound quality characteristics of a performing arts hall are their most fundamental functional attributes. In the middle of construction of the performing arts hall, a more reasonable improvement plan can be obtained through the evaluation of sound quality parameters, so as to obtain better sound quality characteristics; at the same time, the evaluation of sound quality parameters when the hall is full (full of audience) is also an important task; however, it is difficult to carry out the evaluation work at a low signal-to-noise ratio in the middle of construction or in the full use stage. To this end, we have developed a measurement system that can still obtain accurate sound quality parameters even at a low signal-to-noise ratio (20dB). This system integrates advanced anti-noise and de-noise technologies, and has the characteristics of full-band multi-channel measurement, high test work efficiency and high test data accuracy. It can also display the acoustic energy attenuation curves of each frequency band, providing testers with a strong basis for judging the validity of measurement data, allowing the measurement work to be carried out scientifically and effectively.
1. Accurate measurement results can be obtained when the minimum signal-to-noise ratio (35dB) required by relevant specifications is 15dB.
2. Measuring the entire frequency band at one time, with high test efficiency.
3. Support multi-channel simultaneous measurement and wireless sensor measurement.
4. Integrate the pulse corresponding method, improved sliding window method, and nonlinear law. Different noise removal methods can be selected for different noise environments, making the measurement results more accurate.
application field
Design and sound quality evaluation of performing halls, experimental research on architectural acoustics
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