FI20086026L - A directional low-frequency loudspeaker and a method of making the same - Google Patents

A directional low-frequency loudspeaker and a method of making the same Download PDF

Info

Publication number
FI20086026L
FI20086026L FI20086026A FI20086026A FI20086026L FI 20086026 L FI20086026 L FI 20086026L FI 20086026 A FI20086026 A FI 20086026A FI 20086026 A FI20086026 A FI 20086026A FI 20086026 L FI20086026 L FI 20086026L
Authority
FI
Finland
Prior art keywords
sound reproduction
reproduction means
output
sound
loudspeaker
Prior art date
Application number
FI20086026A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20086026A0 (en
Inventor
Jaakko Suomalainen
Original Assignee
Neverland Music Ltd Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Neverland Music Ltd Oy filed Critical Neverland Music Ltd Oy
Priority to FI20086026A priority Critical patent/FI20086026L/en
Publication of FI20086026A0 publication Critical patent/FI20086026A0/en
Priority to PCT/EP2009/064100 priority patent/WO2010049399A1/en
Publication of FI20086026L publication Critical patent/FI20086026L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/028—Structural combinations of loudspeakers with built-in power amplifiers, e.g. in the same acoustic enclosure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers

Abstract

A loudspeaker for outputting at least low frequency sound waves in a predetermined forward direction, said loudspeaker comprising: two sound reproduction means, such as two electro-acoustic transducers, a processing means for the signal processing, and an enclosure for mounting the sound reproduction means, wherein the two sound reproduction means are configured to face opposite directions and are mounted to locate at the opposite sides of the same enclosure to establish at least part of front and rear sound reproduction means, when in use, respectively, there is a common acoustically effective volume within the enclosure for both of the two sound reproduction, and wherein the input signal of the rear sound reproduction means and/or the input signal of the front sound reproduction means is configured to be converted by the processing means such that the output of the rear sound reproduction means has such a phase difference in comparison to the output of the front sound reproduction means that the output of the rear sound reproduction means provides attenuation to the output sound level of the front sound reproduction means when said sound level is measured at the rear of the loudspeaker.
FI20086026A 2008-10-30 2008-10-30 A directional low-frequency loudspeaker and a method of making the same FI20086026L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20086026A FI20086026L (en) 2008-10-30 2008-10-30 A directional low-frequency loudspeaker and a method of making the same
PCT/EP2009/064100 WO2010049399A1 (en) 2008-10-30 2009-10-27 Directive low frequency loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20086026A FI20086026L (en) 2008-10-30 2008-10-30 A directional low-frequency loudspeaker and a method of making the same

Publications (2)

Publication Number Publication Date
FI20086026A0 FI20086026A0 (en) 2008-10-30
FI20086026L true FI20086026L (en) 2010-05-01

Family

ID=39924664

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20086026A FI20086026L (en) 2008-10-30 2008-10-30 A directional low-frequency loudspeaker and a method of making the same

Country Status (2)

Country Link
FI (1) FI20086026L (en)
WO (1) WO2010049399A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7325649B1 (en) * 1999-09-23 2008-02-05 Farnsworth & Budge, Llc Loudspeaker with progressively damped acoustical chamber
ITBS20020060A1 (en) * 2002-06-24 2003-12-24 Outline Di Noselli G & C S N C LOUDSPEAKER FOR LOW FREQUENCIES WITH CONFIGURABLE DIRECTIVITY, ELECTRONICALLY ASSISTED
JP2004140712A (en) * 2002-10-21 2004-05-13 Sanyo Electric Co Ltd Speaker assembly
US8457324B2 (en) * 2005-08-16 2013-06-04 Honeywell International Inc. Directional speaker system
EP1887687A1 (en) * 2006-08-01 2008-02-13 Vestel Elektronik Sanayi ve Ticaret A.S. Compensating device and method for acoustical systems
DE102006058009B3 (en) * 2006-12-08 2008-02-14 D & B Audiotechnik Ag Loudspeaker system for disseminating sound has front and rear loudspeakers in housings, rear housing being band-pass housing
JP2008167150A (en) * 2006-12-28 2008-07-17 Matsushita Electric Ind Co Ltd Speaker

Also Published As

Publication number Publication date
FI20086026A0 (en) 2008-10-30
WO2010049399A1 (en) 2010-05-06

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MM Patent lapsed