Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1983-09-02
1985-09-17
Corbin, John K.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181142, 343 9PS, 350360, G02F 200
Patent
active
045416877
ABSTRACT:
A system for processing of multifrequency input signals to provide a Fourier transform output is provided which can, for example, partition a wide input frequency band into a number of narrow bands and concurrently detect the presence of one or more signals of different frequency in the input. An array of input wave energy transducers is energized with the broadband signal, and by virtue of progressive shifting of the transducers relative to the propagating medium (such as a surface acoustic wave substrate) generates one or more composite wavefronts dispersed at frequency dependent angles. An array of output transducers are disposed along a focal region, each responding to wave energy within a specific frequency range received at its location due to dispersion of the composite wavefront. Such systems preserve phase coherence while responding to multiple input frequencies, but are compact and mass producible at relatively low cost.
REFERENCES:
P. Hartemann, "Frequency-Selective Scanning of Acoustic Surface Wave," Electronics Letters, May 31, 1973, vol. 9, No. 11, pp. 246 and 247.
R. M. De La Rue et al, "Frequency-Controlled Beam Steering of Surface Acoustic Waves Using a Stepped Transducer Array," Electronics Letters, 9, 15, Jul. 26, 1973, pp. 326-327.
Chen S. Tsai et al, "Scanning of Surface Acoustic Wave Phased Array," Proceedings of the IEEE, Jun. 1974, pp. 863 to 864.
C. S. Tsai et al, "Surface Acoustic Wave Array Transducers and Their Applications," Symposium on Optical and Acoustical Micro Electronics, 1974, pp. 583 to 597.
P. Hartemann et al, "Wavefront Synthesis and Reconstruction using Acoustic Surface Waves," 1977 Ultrasonic Symposium Proceedings, IEEE Cat. No. 77CH1264-1SU, pp. 840-842.
P. Cauvard et al, "Ultrasound Beam Scanning Driven by Surface-Acoustic-Waves," 1978 Ultrasonic Symposium Proceedings, IEEE Cat. No. 78CH1344-1, SU, pp. 269-272.
Bogucki Raymond A.
Corbin John K.
Paul James W.
Propp William
TRW Inc.
LandOfFree
Signal processing system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal processing system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal processing system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-367237