Determination of the minimum length impulse response for time reversal focalization in acoustic cavities

2012 ◽  
Author(s):  
Nicolás Pérez ◽  
Marcelo Y. Matuda ◽  
Carlos Negreira ◽  
Julio C. Adamowski
Keyword(s):  
Impulse Response ◽  
Time Reversal ◽  
Minimum Length ◽  
Acoustic Cavities

Determination of Stability Derivatives by Impulse-Response Techniques

1977 ◽  
Vol 14 (02) ◽  
pp. 265-275
Author(s):  
Carl A. Scragg
Keyword(s):  
Memory Effect ◽  
Impulse Response ◽  
Traditional Method ◽  
Equations Of Motion ◽  
Experimental Results ◽  
Regular Motion ◽  
Stability Derivatives ◽  
The Stability ◽  
Derivatives Of

This paper presents a new method of experimentally determining the stability derivatives of a ship. Using a linearized set of the equations of motion which allows for the presence of a memory effect, the response of the ship to impulsive motions is examined. This new technique is compared with the traditional method of regular-motion tests and experimental results are presented for both methods.

Development of the Source Reconstruction System by Combining Sound Source Localization and Time Reversal Method

2016 ◽  
Vol 34 (1) ◽  
pp. 35-40
Author(s):  
S.-C. Lin ◽  
G.-P. Too ◽  
C.-W. Tu
Keyword(s):  
Impulse Response ◽  
Response Function ◽  
Source Localization ◽  
Sound Source ◽  
Time Reversal ◽  
Impulse Response Function ◽  
Source Location ◽  
Sound Source Localization ◽  
Target Sound ◽  
Reconstructed Signal

AbstractThis study explored the target sound source location at unknown situation and processed the received signal to determine the location of the target, including the reconstructed signal of source immediately. In this paper, it used triangulation sound sources localization and time reversal method (TRM) to reconstruct the source signals. The purpose is to use a sound source localization method with a simple device to quickly locate the position of the sound source. This method uses the microphone array to measure signal from the target sound source. Then, the sound source location is calculated and is indicated by Cartesian coordinates. The sound source location is then used to evaluate free field impulse response function which can replace the impulse response function used in time-reversal method. This process reduces the computation time greatly which makes possible for a real time source localization and source signal separation.

Sign in / Sign up

Export Citation Format

Share Document