New test methods for textile acoustics and acoustic properties
Scientists from the German Haines Institute led by Dr. Jan Bellinger joined hands with the University of Reutlingen in Tübingen and Roikona Textile Co., Ltd. to develop new test methods for the acoustics and acoustic properties of textile materials. The Heinstein Institute uses acoustic testing instruments to determine the degree to which textile materials have sound absorbing effects and to identify noise sources.
At present, noise pollution is becoming more and more serious all over the world, and it is becoming the culprit of people's heavy pressure. In addition to adversely affecting the human nervous system, noise can also affect people's mood and physical condition. Studies have shown that people's attention is also reduced by about 20% to 30%, which reduces work performance and increases the risk of accidents. The most significant effect is to reduce comfort. Even light sounds over 40 decibels that sound like radio stations can have these negative effects. Therefore, sound-absorbing textile materials are more and more popular in many fields. The industry believes that noise brings unpleasant and uncomfortable emotions. According to Dr. Bellinger's research team, this sound-absorbing material can be used in interior design and automotive interiors to reduce and optimize noise, thereby improving human comfort.
Of course, this sound-absorbing fiber material can also be used in public facilities, open offices and exhibition halls to install sound-absorbing ceilings, partitions, floors and processing surfaces, and automotive interiors using industrial textiles are all effective ways to prevent noise interference.
At the Heinstein Institute, different textile materials are tested using acoustic measuring equipment. The fabric to be tested is clamped on the sample holder, between the loud speaker and the measurement microphone. The researchers said that one of the benefits of this measurement method is that the size of the sample can be very small, and only a 10 cm × 10 cm fabric sample is sufficient. The measured frequency is between 200 and 20000 Hz to determine the degree of attenuation of the spectrum of the signal emitted by the fabric on the textile.
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