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1. (WO2005112602) SPEAKER WITH FREQUENCY DIRECTED DUAL DRIVERS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2005/112602 International Application No.: PCT/US2005/018140
Publication Date: 01.12.2005 International Filing Date: 23.05.2005
IPC:
H03G 5/00 (2006.01) ,H04R 1/02 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
5
Tone control or bandwidth control in amplifiers
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1
Details of transducers
02
Casings; Cabinets; Mountings therein
Applicants: LINSE, Jason, N.[US/US]; US (UsOnly)
ANDERSON, Jeffrey, S.[US/US]; US (UsOnly)
LOGITECH EUROPE S.A.[CH/CH]; Moulin du Choc CH-1122 Romanel-sur-Morges, CH (AllExceptUS)
Inventors: LINSE, Jason, N.; US
ANDERSON, Jeffrey, S.; US
Agent: DAWSON, John, R.; Ipsolon LLP 805 SW Broadway #2740 Portland, OR 97205, US
Priority Data:
60/573,05021.05.2004US
Title (EN) SPEAKER WITH FREQUENCY DIRECTED DUAL DRIVERS
(FR) HAUT-PARLEUR A DOUBLES CIRCUITS D'ATTAQUE COMMANDES EN FREQUENCE
Abstract:
(EN) A speaker (20) that includes a pair of spaced-apart, in-plane mounted drivers (24, 26) connected in series to a network for applying the appropriate frequency component of the electrical input drive signal to each of the drivers is disclosed. A frequency dependent shunting network, such as a low pass filter (40), is applied to one of the drivers so as to gradually mute the one driver (24) as a desired frequency is approached. The result is an aesthetically pleasing speaker that has dual in-plane drivers (24, 26) and that produces superior sound quality throughout the entire frequency range of the speaker, including those ranges in which dual, in plane, drivers (24, 26) tend to acoustically interfere with each other.
(FR) L'invention porte sur un haut-parleur comprenant une paire de circuits d'attaque espacés, montés dans le plan et connectés en série à un réseau afin d'appliquer la composante de fréquence appropriée du signal électrique de commande d'entrée à chacun des circuits d'attaque. Un réseau de shuntage dépendant d'une fréquence, tel qu'un filtre passe-bas, est appliqué sur l'un des circuits d'attaque de façon à mettre progressivement en sourdine le circuit d'attaque au moment où une fréquence désirée est approchée. On obtient ainsi un haut-parleur de belle esthétique qui possède des doubles circuits d'attaque dans le plan et qui génère une meilleure qualité sonore dans la totalité de sa plage de fréquences, y compris ces plages dans lesquelles des circuits d'attaque doubles, dans le plan, ont tendance à interférer acoustiquement entre eux.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)