CBC471
发表于 2025-3-28 16:03:53
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BRACE
发表于 2025-3-28 19:19:52
Room Acoustics,however, the success of room-acoustical efforts depends on other factors that cannot be quantified that easily, not least it also depends on the hearing habits of the listeners. In any case, absolutely “good acoustics” of a room do not exist.
Physiatrist
发表于 2025-3-29 00:11:52
Road Traffic Noise,rference of communication and disturbance of sleep; the long- and short-term consequences cause adverse cardiovascular effects, detrimental hormonal responses (stress hormones), and possible disturbance of the human metabolism (nutrition) and the immune system. Even performance at work and school could be impaired.
遗传
发表于 2025-3-29 04:01:03
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Euphonious
发表于 2025-3-29 10:47:23
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无法治愈
发表于 2025-3-29 14:55:59
transmission and the methods of the abating different kinds of air-borne and structure-borne sounds caused by various mechanisms – from traffic to machinery and flow-induced sound. In addition the modern aspects of room and building acoustics, as well as psychoacoustics and active noise control, are covered..978-3-642-43550-8978-3-540-69460-1
GLIDE
发表于 2025-3-29 15:47:17
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TRAWL
发表于 2025-3-29 21:24:26
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窒息
发表于 2025-3-30 01:21:33
Noise Emission Assessment,. Due to the high sensitivity of the human ear however, such low sound powers create close to the machine loudnesses higher than 100 phon (64 sone). Consequently, the assessment of machinery noise emission requires relations to these subjective properties.
Neuralgia
发表于 2025-3-30 05:40:08
Sound Propagation Outdoors,ies of the sound source (sound power spectrum, directivity), the geometry of the sound field (relative position of receiver point and sound source to each other, to the ground and to obstacles in the sound field), on ground effects, and on meteorological conditions.