作者: WATER 時(shí)間: 2025-3-21 21:55 作者: Outspoken 時(shí)間: 2025-3-22 02:02 作者: SIT 時(shí)間: 2025-3-22 05:17 作者: Entreaty 時(shí)間: 2025-3-22 12:09 作者: Oration 時(shí)間: 2025-3-22 14:59
Thinking Through Contradictions, tries to escape a pneumatic hammer or a lawn mower behind the next house. Wenn hiking in a quite forest, for example, one quickly takes another path over the next hill, whenever a lumberjack is heard cutting into the stillness with his chain saw.作者: Oration 時(shí)間: 2025-3-22 18:55
Birgit Prinz,Peter Wollsching-Strobele reduced by placing two inversely phased sources at a small distance to one another. In other words, one can refer to one of such a source pair as ‘a(chǎn)n additional sound source introduced for the purpose of noise reduction.’ This is the main idea behind what is known as active noise reduction, which 作者: BOOR 時(shí)間: 2025-3-22 22:13 作者: 有毒 時(shí)間: 2025-3-23 03:50 作者: CT-angiography 時(shí)間: 2025-3-23 08:08 作者: locus-ceruleus 時(shí)間: 2025-3-23 12:52 作者: CRACK 時(shí)間: 2025-3-23 16:32 作者: 違抗 時(shí)間: 2025-3-23 20:36 作者: Ganglion-Cyst 時(shí)間: 2025-3-24 00:24
978-3-642-44371-8Springer-Verlag Berlin Heidelberg 2009作者: 不能約 時(shí)間: 2025-3-24 02:52 作者: Mucosa 時(shí)間: 2025-3-24 07:15 作者: exigent 時(shí)間: 2025-3-24 14:20 作者: Fulsome 時(shí)間: 2025-3-24 15:49 作者: faculty 時(shí)間: 2025-3-24 21:10
https://doi.org/10.1007/978-3-476-04264-4The most common solution to problems due to vibration impact into buildings or the ground, is to isolate the machinery, engines or other aggregates from their bearing foundations by spring elements.作者: 一起平行 時(shí)間: 2025-3-25 00:19 作者: noxious 時(shí)間: 2025-3-25 04:01 作者: 修飾語 時(shí)間: 2025-3-25 10:14 作者: IDEAS 時(shí)間: 2025-3-25 14:03 作者: 靈敏 時(shí)間: 2025-3-25 18:14 作者: Rct393 時(shí)間: 2025-3-25 22:53 作者: Armory 時(shí)間: 2025-3-26 00:14 作者: CERE 時(shí)間: 2025-3-26 07:44
Silencers,Generally speaking, silencers are technical devices which attenuate a sound field travelling through them along its propagation path.作者: 勉強(qiáng) 時(shí)間: 2025-3-26 11:59 作者: narcotic 時(shí)間: 2025-3-26 16:14
Fundamentals of wave propagation,titive sound incidences, such as a child bouncing a ball, hammering at a construction site, etc., a time delay can easily be observed between the optical perception and the arrival of the acoustic signal. This time delay increases with increasing distance between the observer and the source.作者: Irremediable 時(shí)間: 2025-3-26 17:07
Structure-borne sound,erm ‘structure-borne sound’. Structure-borne sound has major importance with respect to solving noise control problems: the air-borne sound into (or from) the aforementioned solid structures is caused by motion in the structure’s surface. In many cases it is the structure-borne sound that is respons作者: Institution 時(shí)間: 2025-3-27 01:00
Sound absorbers, example, it is necessary to prevent noise emitted by machinery from travelling to areas further away via reflections; one is interested in obtaining a sufficiently high absorption at the walls. On the other hand, the sound for audiences in auditoria like studios or concert halls must be enhanced by作者: 不怕任性 時(shí)間: 2025-3-27 03:22
Fundamentals of room acoustics,epends on the room volume and the room’s interior design; the reverberation time is short in small rooms and in rooms which have large absorbing surfaces. Large volumes with less absorption have reverberation times which can easily extend to a couple of seconds. During a period of 2?s, for instance,作者: 巨頭 時(shí)間: 2025-3-27 08:29 作者: 善于騙人 時(shí)間: 2025-3-27 10:46 作者: entail 時(shí)間: 2025-3-27 14:07 作者: 向外 時(shí)間: 2025-3-27 20:17
ntrol as well as fundamentals of signal and system theory.No‘Engineering acoustics‘ is a teaching textbook that can serve as a tool for self-study and as a compendium for lectures as well. One of the author‘s goals is not only to describe how the topic develops but also why a specific way is chosen.作者: absolve 時(shí)間: 2025-3-27 23:57 作者: intoxicate 時(shí)間: 2025-3-28 05:18
Strategiebereiche der Arbeitsmarktpolitik sound damper channels, walls, elastic bearings. All of these constructions transmit a time-dependent stimulus signal and in the process, change the signal. As transmitters are often referred to as ‘systems,’ this chapter could otherwise be titled ‘The Basics of System Theory’.作者: Homocystinuria 時(shí)間: 2025-3-28 06:53 作者: 阻撓 時(shí)間: 2025-3-28 12:13 作者: faction 時(shí)間: 2025-3-28 16:42
Aspects and Properties of Transmitters, sound damper channels, walls, elastic bearings. All of these constructions transmit a time-dependent stimulus signal and in the process, change the signal. As transmitters are often referred to as ‘systems,’ this chapter could otherwise be titled ‘The Basics of System Theory’.作者: 挑剔為人 時(shí)間: 2025-3-28 21:31
,Die zukünftige Arbeitsmarktsituation,ible for the resulting sound in air (or sound in liquids). Even the transmission through walls, ceilings and windows, etc. is essentially a structural problem. A vital and fundamental difference exists between sound waves in air and sound waves in structures.作者: 方便 時(shí)間: 2025-3-29 02:05
Erfolgreiches Management als Hochbegabter, the sound travels a distance of nearly 700m and hits the room surfaces several times; the sound waves are reflected several times at the walls under different angles. Each reflection at a (rigid) plane surface can be regarded as coming from a sound source which is mirrored at the wall.作者: AUGER 時(shí)間: 2025-3-29 03:54 作者: 含糊 時(shí)間: 2025-3-29 09:16
Fundamentals of room acoustics, the sound travels a distance of nearly 700m and hits the room surfaces several times; the sound waves are reflected several times at the walls under different angles. Each reflection at a (rigid) plane surface can be regarded as coming from a sound source which is mirrored at the wall.作者: 提煉 時(shí)間: 2025-3-29 14:36 作者: 嘲弄 時(shí)間: 2025-3-29 19:25
Fundamentals of Active Noise Control,described in Chapter 11). The disruptive, somehow unavoidable sound source is referred to here as the ‘primary’ source; additional electro-acoustic converters which are intended for use as noise reducers are referred to as ‘secondary’ sources.作者: 展覽 時(shí)間: 2025-3-29 22:45 作者: Nuance 時(shí)間: 2025-3-30 03:18 作者: Chronological 時(shí)間: 2025-3-30 07:15 作者: 引水渠 時(shí)間: 2025-3-30 08:54
Jennifer Feather. In the extreme it is possible to perform enzymic reactions in essentially dry organic solvent (Klibanov 1986). Many reactions involve water-soluble as well as poorly water-soluble organic reactant(s) and/or produces) (Lilly and Woodley 1985); for these cases the use of a heterogeneous liquid-liqui作者: 樹膠 時(shí)間: 2025-3-30 14:20
Susan Blonshine,Jeffrey Haynes,Katrina HynesPandemie diesen Trend, da traditionelle Wahlkampfveranstaltungen auf Marktpl?tzen oder in Hallen aufgrund der Ma?nahmen zur Bek?mpfung des Virus kaum m?glich waren. Die Parteien und Kandidat*innen waren noch st?rker auf digitale Plattformen angewiesen und die Strategien entsprechend detailreicher als in 978-3-658-39007-5978-3-658-39008-2作者: BIPED 時(shí)間: 2025-3-30 17:58 作者: APEX 時(shí)間: 2025-3-31 00:25 作者: 共和國 時(shí)間: 2025-3-31 03:01
