Acoustics - Measurement
Use of Mobile Devices with Multifunctional Sound Level Measurement Applications: Some Experiences for Urban Acoustics Education in Primary and Secondary Schools
... of acoustics education to learn about the urban acoustic ...(SPL) measurement applications with mobile devices are ...including acoustics education for learning about urban acoustic ...
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Volume diffusers for architectural acoustics
... Reverberation chambers often make use of suspended scattering surfaces hung within the room to promote a diffuse field by redistributing energy and breaking up modal propagation [3; 16], an example of which is shown in ...
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►▼ Show Figures
... For measurement of archaeological acoustic spaces, Murphy [17] proposes the use as a source of a recording studio reference monitor loudspeaker that has a flat frequency response, accompanied by a sub-woofer ...
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A Theory of Acoustics in Solar Energy
... thermal measurement results of temperatures of various components of PV device, am- bient air and room air temperatures, air velocities and solar intensities are presented in Tables 1 and ...
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Signal processing in experimental room acoustics
... Gun shots, bursting balloons, explosives of other methods that yield a large excitation of the acoustic field in a room can be used to obtain the impulse response from the sound source to a microphone, which is the main ...
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Characterisation of small room acoustics for audio production
... The impulse response of the room represents the interaction of the speaker and the room at this particular position. It is important to note that these impulse responses are not good to calculate any acoustic parameter ...
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Characterisation of the directionality of reflections in small room acoustics
... This type of measurements requires a calibrated Sounfield microphone and a reliable sample and phase accurate soundcard connected to a silent portable computer. Measurement software performs the extraction of the ...
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►▼ Show Figures
... The reverberation room used at the Acoustics Laboratory at Aalto University was used in this study. The dimensions of the room were 8.7 m × 6.2 m × 3.6 m, with a volume of 194 m 3 . Following the recommendations ...
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►▼ Show Figures
... room acoustics in recent years as reflected in [26,27], an additional area of future research using the FDTD method as a complementary technique to in-situ measurement can be considered for similar ...
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The use of acoustics in space exploration
... pressure amplitudes which can be measured from a range of biomedical ultrasonic devices operating in degassed water (measurement in vivo in tissue is difficult, but would produce lower values than those that ...
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Acoustics in water: synergies with marine biology
... In the evaluation of cetacean presence or the measurement of shipping noise it has to be taken into account that the hydrophones are installed deep under water. The sound speed profile of the Mediter- ranean Sea ...
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Exposure to High-Frequency Sound and Ultrasound in Public Places: Examples from Zurich, Switzerland
... Figure 1b). Audio recordings were made with a sampling frequency of 96 kHz. Audio signal processing involved frequency and time-frequency analysis (Spectroid software settings: fast Fourier transform (FFT) window size: ...
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Acoustics in HVAC System
... With such a system, sound targets can be established for different environments. These targets aid building designers in specifying appropriate acoustical requirements that can be substantiated through ...
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ACOUSTICS OF A SMALL AUSTRALIAN BURROWING CRICKET
... Male insects were collected from the Coalseam Nature Reserve on the Irwin River north of Mingenew in Western Australia on three occasions in October and November 1999. Insects were located by their song during the night ...
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Advantages and Disadvantages of Surround-Type Concert Halls
... Halls with a surround form feature a significant percentage of the audience located to the sides of or behind the platform. This paper discusses some advantages and disadvantages of these halls, with respect to both ...
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Cited by 1
... We interpret the results as follows: When G r - G d is approximately equal to zero, i.e., the reverberant and direct sound transmission level between the concertmaster/conductor and o[r] ...
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Restaurant acoustics – the science behind verbal
... the number of people in the room exceeds the acoustic capacity, the ambient noise level may exceed 442. 71 dB and the quality of verbal communication in a distance of 1 m is insufficien[r] ...
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Evaluating Room Acoustics for Speech Intelligibility
... A comparison between various professional methods for measuring RT60 can be found in [6] [7] [8]. These approaches use specialized equipment and in- volved analysis, and would therefore be less accessible to the average ...
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The effects of seating on the acoustics of auditoria
... Figure 2.6: Reverberation chamber absorption coefficients of ten different seat types, measured using the "standard" version of the new method at.. Figure 2.7 shows the effect of varying[r] ...
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Virtual Acoustics for Concert Advertisement
... The projection "Entäuschung" referring the St. Luke passion shown in Figure 4 was slowly moving on the surface of the the ceiling inside the church St. Michael (#8 of the parcours). The spectator was only able to ...
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