Estimation of room impulse-response parameters using low-order microphone array

2012 ◽  
Author(s):  
Tal Szpruch ◽  
Boaz Rafaely
Keyword(s):  
Impulse Response ◽  
Microphone Array ◽  
Low Order

3D Impulse Response Measurements of Spaces Using an Inexpensive Microphone Array

2013 ◽  
Vol 20 (2) ◽  
pp. 141-155 ◽  
Author(s):  
Daniel Protheroe ◽  
Bernard Guillemin
Keyword(s):  
Impulse Response ◽  
Microphone Array

Influence of Different Impulse Response Measurement Signals on MUSIC-Based Sound Source Localization

2017 ◽  
Vol 29 (1) ◽  
pp. 72-82 ◽  
Author(s):  
Takuya Suzuki ◽  
◽  
Hiroaki Otsuka ◽  
Wataru Akahori ◽  
Yoshiaki Bando ◽  
...  
Keyword(s):  
Impulse Response ◽  
Source Localization ◽  
Sound Source ◽  
Transfer Functions ◽  
Signal To Noise Ratio ◽  
Microphone Array ◽  
Sound Source Localization ◽  
Sound Sources ◽  
Response Measurement ◽  
Significant Difference

[abstFig src='/00290001/07.jpg' width='300' text='Six impulse response measurement signals' ] Two major functions, sound source localization and sound source separation, provided by robot audition open source software HARK exploit the acoustic transfer functions of a microphone array to improve the performance. The acoustic transfer functions are calculated from the measured acoustic impulse response. In the measurement, special signals such as Time Stretched Pulse (TSP) are used to improve the signal-to-noise ratio of the measurement signals. Recent studies have identified the importance of selecting a measurement signal according to the applications. In this paper, we investigate how six measurement signals – up-TSP, down-TSP, M-Series, Log-SS, NW-SS, and MN-SS – influence the performance of the MUSIC-based sound source localization provided by HARK. Experiments with simulated sounds, up to three simultaneous sound sources, demonstrate no significant difference among the six measurement signals in the MUSIC-based sound source localization.

Impulse response of a spherical microphone array (eigenmike)

2006 ◽  
Vol 119 (5) ◽  
pp. 3378-3378 ◽  
Author(s):  
Colin Barnhill ◽  
James West ◽  
Ilene Busch‐Vishniac
Keyword(s):  
Impulse Response ◽  
Microphone Array

scholarly journals Linear microphone array for acoustic impulse response measurements using reciprocal method: Effects of microphone holder

2021 ◽  
Vol 42 (6) ◽  
pp. 344-349
Author(s):  
Mao Terashima ◽  
Daisuke Morikawa ◽  
Parham Mokhtari ◽  
Tatsuya Hirahara
Keyword(s):  
Impulse Response ◽  
Microphone Array ◽  
Method Effects ◽  
Reciprocal Method

the effects of resonance with Jupiter in the system of short-period comets

1974 ◽  
Vol 22 ◽  
pp. 193-203
Author(s):  
L̆ubor Kresák
Keyword(s):  
Structural Effects ◽  
Order Resonance ◽  
Mean Motion ◽  
Short Period ◽  
The Mean ◽  
Compound Effect ◽  
Low Order

AbstractStructural effects of the resonance with the mean motion of Jupiter on the system of short-period comets are discussed. The distribution of mean motions, determined from sets of consecutive perihelion passages of all known periodic comets, reveals a number of gaps associated with low-order resonance; most pronounced are those corresponding to the simplest commensurabilities of 5/2, 2/1, 5/3, 3/2, 1/1 and 1/2. The formation of the gaps is explained by a compound effect of five possible types of behaviour of the comets set into an approximate resonance, ranging from quick passages through the gap to temporary librations avoiding closer approaches to Jupiter. In addition to the comets of almost asteroidal appearance, librating with small amplitudes around the lower resonance ratios (Marsden, 1970b), there is an interesting group of faint diffuse comets librating in characteristic periods of about 200 years, with large amplitudes of about±8% in μ and almost±180° in σ, around the 2/1 resonance gap. This transient type of motion appears to be nearly as frequent as a circulating motion with period of revolution of less than one half that of Jupiter. The temporary members of this group are characteristic not only by their appearance but also by rather peculiar discovery conditions.

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