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1. (WO2017017591) LASER MICROPHONE UTILIZING MIRRORS HAVING DIFFERENT PROPERTIES
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Pub. No.: WO/2017/017591 International Application No.: PCT/IB2016/054415
Publication Date: 02.02.2017 International Filing Date: 25.07.2016
IPC:
G10L 15/20 (2006.01) ,H04R 23/00 (2006.01)
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
15
Speech recognition
20
Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise or of stress induced speech
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
23
Transducers other than those covered by groups H04R9/-H04R21/99
Applicants: VOCALZOOM SYSTEMS LTD.[IL/IL]; 6 HaYetzira Street 2066722 Yokneam Illit, IL
Inventors: FISHMAN, Tal; IL
BAKISH, Tal; IL
Agent: BRUN, Heidi; IL
Priority Data:
62/197,02326.07.2015US
62/197,10627.07.2015US
62/197,10727.07.2015US
62/197,10827.07.2015US
Title (EN) LASER MICROPHONE UTILIZING MIRRORS HAVING DIFFERENT PROPERTIES
(FR) MICROPHONE LASER FAISANT APPEL À DES MIROIRS AYANT DES PROPRIÉTÉS DIFFÉRENTES
Abstract:
(EN) Laser microphone, laser-based microphone, and optical microphone utilizing mirrors having different properties. A laser microphone includes at least two mirrors: a front-side mirror, and a rear-side mirror. The reflectivity of the front-side mirror, is different from the reflectivity of the rear-side mirror; thereby increasing the efficiency or the accuracy of self-mixing of signals in the laser microphone. Additionally or alternatively, the front-side mirror has a first number of Distributed Bragg Reflector (DBR) layers; and the rear-side mirror has a second, different, number of DBR layers; thereby increasing the efficiency or the accuracy of self-mixing of signals in the laser microphone.
(FR) L'invention concerne un microphone laser, un microphone basé sur laser et un microphone optique faisant appel à des miroirs ayant des propriétés différentes. Un microphone laser comprend au moins deux miroirs : un miroir de côté avant et un miroir de côté arrière. La réflectivité du miroir de côté avant est différente de la réflectivité du miroir de côté arrière, ce qui permet d'augmenter l'efficacité ou la précision d'auto-mélange de signaux dans le microphone laser. De plus, ou en variante, le miroir de côté avant comporte un premier nombre de couches de réflecteur de Bragg réparti (DBR) et le miroir de côté arrière comporte un second nombre différent de couches de DBR, ce qui permet d'augmenter l'efficacité ou la précision d'auto-mélange de signaux dans le microphone laser.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)