Subjective Evaluation of Heavy/soft Impact Sound
نویسندگان
چکیده
Child running and jumping sound are one of the major noise sources in heavy structured apartment building. It was reported that physical characteristics of rubber ball (heavy/soft impact sound) was similar with child's running and jumping. As a standard impact source, rubber ball was standardized in ISO 10140 series and ISO 16283-2. However, evaluation method of rubber ball was not proposed in ISO standard. In order to propose the single number quantity of rubber ball which has good relationship with resident's responses, subjective evaluation was conducted. Rubber ball impact sound were recorded with multi-channel system in nine apartment buildings. Recorded sound sources were reproduced through multi-channel speaker system with subwoofer in a test chamber. More than 100 apartment building residents were participated. Subjective loudness and annoyance were investigated.
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