Sound field
Modeling and analysis of secondary sources coupling for active sound field reduction in confined spaces
... of sound fields ...the sound field inside the enclosure are energy density and potential energy, whereas a norm of sound pressure at some discrete points in space is attempted most of the time ...
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SOUND-FIELD AMPLIFICATION: ENHANCING the CLASSROOM LISTENING ENVIRONMENT for ABORIGINAL and TORRES STRAIT ISLANDER CHILDREN
... The results of the S.I.F.T.E.R. rating scale for the four classes indicated the teachers observed improvement in attention and increased class participation following the use of sound-field amplification ...
7
Numerical Method to Calculate Low Frequency Sound Field in Non anechoic Pools
... low-frequency sound field calculation in non-anechoic pools with impedance boundary based on finite element software ACTRAN is proposed in this ...the sound field boundary of non-anechoic ...
5
An energy interpretation of the Kirchhoff Helmholtz boundary integral equation and its application to Sound Field synthesis
... of sound field synthesis was devised in part to avoid the matrix inversion issues which arise from the standard mode matching, but unfortunately gave rise to non-unique frequencies due to the use of ...
26
Interface for Barge-in Free Spoken Dialogue System Based on Sound Field Reproduction and Microphone Array
... response sound elimina- tion technique, which is robust against the fluctuation of the room transfer ...First, sound field control with multi- ple loudspeakers realizes silent zones at the microphone ...
13
Virtual Reality System with Integrated Sound Field Simulation and Reproduction
... of sound field modeling and 3D sound reproduc- tion of the VR systems installed at RWTH Aachen Univer- sity (see Figure ...physical sound field mod- eling in real time, and is ...
19
Experimental Validation of a Phased Array Ultrasonic Testing Probe Model and Sound Field Optimization
... of sound field optimizations towards a backwall surface breaking defect, with the intention to retrieve a maximized corner ...the sound field for specific defect characteristics at this ...
42
A theoretical study of sound field reconstruction techniques
... The theories of three different methods for the reconstruction of the sound field have been presented and analytically compared for the special case of a spherical array of transducers. It has been shown ...
6
The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor
... the sound field of the electric motor was to be ...the sound field of the DC electric ...the sound field in the surroundings of the DC electric motor and that are the result of ...
14
The sound field generated by tethered stingless bees (Melipona scutellaris): inferences on its potential as a recruitment mechanism inside the hive
... and sound pressure we clipped the wings close to their ...the sound field was measured again with the sensor at the same positions as ...respective sound field was thus measured twice ...
13
A Comparison Research into Characteristic Waves of the Well Hole II Interface Cement Part Missing Sound Field
... In the simulation of P - wave velocity is 3800m/s which is a fast formation. At this time, the characteristic wave first wave travelling time is about 0.475ms and the stratum wave first wave travelling time is about ...
7
Distribution of sound pressure around a singing cricket : radiation pattern and asymmetry in the sound field
... 231 Recording the sound field 232 To obtain acoustic data at different points in relation to a sound source, recordings must be taken 233 across a range of points around the specimen whi[r] ...
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Investigation of the Sound Field of Phased Array Using the Photoelastic Visualization Technique and the Accurate FEM
... narrow. As to the steering of the incident echo, although slight differences were existed depending on a continuous wave and pulse wave, three estimations agree well. Thus, the photoelastic visualization method could ...
5
The action of a sound field on colloids
... The effect of high frequency sound waves on colloicls is investigated experimentally by observing the behavioux• of the pattern produced by the diffraction of light by progressive ultras[r] ...
83
Sound Field Analysis Based on Analytical Beamforming
... the sound field component coming from a partic- ular incidence direction, but the criterion implemented to achieve this objective is evaluated on a continuous set of in- cidence directions spanning the whole solid ...
15
A computational model for sound field absorption by acoustic arrays
... Specically, we consider the absorption rate of an ideal reverberant random sound eld as dened in.. Section 3.[r] ...
19
Sound radiation and wing mechanics in stridulating field crickets (Orthoptera: Gryllidae)
... Germany). Sound recordings were obtained using a 1/8 inch condenser microphone Brüel & Kjaer Type 4138, connected to a Brüel & Kjaer 2633 preamplifier (Brüel & Kjaer, Nærum, ...radiating sound ...
13
Use of the swim bladder and lateral line in near field sound source localization by fish
... axisymmetric sound field, the particle motion vector alternately points towards and away from the acoustic source for equal amounts of ...1977); sound source localization in plainfin midshipman ...
11
Directional sound processing and interaural sound transmission in a small and a large grasshopper
... two sound components are in phase for ipsilateral directions, but more or less out of phase for contralateral directions; the result is critically dependent on the exact phase relationships in the latter case, but ...
11
Sound of Rain
... the sound of the rain, which is a real life example of a liquid drop impact on a liquid ...a sound is being heard. When you hear this sound somehow and measure the frequency, this seems lower than ...
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