AU7633200A - Direct coupling of waveguide to compression driver having matching slot shaped throats - Google Patents
Direct coupling of waveguide to compression driver having matching slot shaped throatsInfo
- Publication number
- AU7633200A AU7633200A AU7633200A AU7633200A AU7633200A AU 7633200 A AU7633200 A AU 7633200A AU 7633200 A AU7633200 A AU 7633200A AU 7633200 A AU7633200 A AU 7633200A AU 7633200 A AU7633200 A AU 7633200A
- Authority
- AU
- Australia
- Prior art keywords
- waveguide
- plug
- acoustic
- phasing
- aspect ratio
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000006835 compression Effects 0.000 title abstract 4
- 238000007906 compression Methods 0.000 title abstract 4
- 230000008878 coupling Effects 0.000 title abstract 2
- 238000010168 coupling process Methods 0.000 title abstract 2
- 238000005859 coupling reaction Methods 0.000 title abstract 2
- 230000007704 transition Effects 0.000 abstract 2
- 230000000644 propagated effect Effects 0.000 abstract 1
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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
-
- 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
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Waveguide Connection Structure (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
There is disclosed an acoustic driver having a phasing and compression plug and its direct coupling to an acoustic waveguide having an entry throat with a non-unity aspect ratio, such as a rectangular diffraction slot. The phasing and compression plug has an input end with an input surface having a plurality of input apertures configured in a parallel array of spaced-apart chordal slits. The opposite, output end of the plug has a like plurality of output apertures contained in an output region having unequal length and width dimensions such that the area of the output region is less than that of the input surface. A plurality of passages through the plug body connect each respective input aperture to the corresponding output aperture wherein the relative lengths of the passages are preselected to provide an acoustic wavefront which is concave at its major (vertical) axis and planar or convex across its minor (horizontal) axis. The phasing and compression plug of the invention affects the transition of the bounds of the wavefront from round to a shape having a non-unity aspect ratio such that the throat of the driver can be directly coupled to an acoustic waveguide having a throat with a matching non-unity aspect ratio shape, thereby eliminating the requirement for a round-to-rectangular transition coupled and also for a waveguide or horn with an internal diffraction slot. Consequently, the above factors contribute to enable a cylindrically expanding wavefront to be accurately propagated out of one of and thus out of an array of waveguide mouths.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/AU2000/001157 WO2002025991A1 (en) | 2000-09-22 | 2000-09-22 | Direct coupling of waveguide to compression driver having matching slot shaped throats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU7633200A true AU7633200A (en) | 2002-04-02 |
Family
ID=3700850
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU7633200A Pending AU7633200A (en) | 2000-09-22 | 2000-09-22 | Direct coupling of waveguide to compression driver having matching slot shaped throats |
| AU2000276332A Ceased AU2000276332B2 (en) | 2000-09-22 | 2000-09-22 | Direct coupling of waveguide to compression driver having matching slot shaped throats |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2000276332A Ceased AU2000276332B2 (en) | 2000-09-22 | 2000-09-22 | Direct coupling of waveguide to compression driver having matching slot shaped throats |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1330936B1 (en) |
| CN (1) | CN100413379C (en) |
| AT (1) | ATE448648T1 (en) |
| AU (2) | AU7633200A (en) |
| DE (1) | DE60043311D1 (en) |
| WO (1) | WO2002025991A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8718310B2 (en) | 2001-10-19 | 2014-05-06 | Qsc Holdings, Inc. | Multiple aperture speaker assembly |
| US7177437B1 (en) | 2001-10-19 | 2007-02-13 | Duckworth Holding, Llc C/O Osc Audio Products, Inc. | Multiple aperture diffraction device |
| ITPR20020064A1 (en) * | 2002-10-31 | 2004-05-01 | Aeb Srl | EQUALIZER, OR PHASE PLUG, FOR ELECTROACOUSTIC TRANSDUCERS. |
| FI120126B (en) | 2004-04-30 | 2009-06-30 | Aura Audio Oy | A method for providing a smooth sound wave front with a planar waveguide, speaker structure and acoustic line emitter |
| GB2443228B (en) * | 2006-10-25 | 2010-02-10 | Gary Paul Nicholson | Piezo-electric loudspeaker |
| US8917896B2 (en) | 2009-09-11 | 2014-12-23 | Bose Corporation | Automated customization of loudspeakers |
| US9111521B2 (en) | 2009-09-11 | 2015-08-18 | Bose Corporation | Modular acoustic horns and horn arrays |
| US9049519B2 (en) | 2011-02-18 | 2015-06-02 | Bose Corporation | Acoustic horn gain managing |
| DE102012107645B4 (en) * | 2012-08-21 | 2015-04-30 | D & B Audiotechnik Gmbh | ACOUSTIC TRANSFORMER |
| CN107925813B (en) | 2015-08-14 | 2020-01-14 | 杜比实验室特许公司 | Upward firing loudspeaker with asymmetric diffusion for reflected sound reproduction |
| US9712911B2 (en) * | 2015-12-22 | 2017-07-18 | Bose Corporation | Conformable adaptors for diffraction slots in speakers |
| EP3429224A1 (en) * | 2017-07-14 | 2019-01-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Loudspeaker |
| ES2919959T3 (en) * | 2018-10-26 | 2022-07-29 | B&C Speakers S P A | Coaxial Compression Driver |
| BE1028524B1 (en) * | 2020-07-31 | 2022-02-28 | Aed Distrib Nv | Line source speaker arrangement |
| US11877120B2 (en) * | 2022-06-13 | 2024-01-16 | Harman International Industries, Incorporated | Compression driver having rectangular exit |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54162536A (en) * | 1978-06-13 | 1979-12-24 | Matsushita Electric Ind Co Ltd | Horn speaker |
| US4718517A (en) * | 1986-02-27 | 1988-01-12 | Electro-Voice, Inc. | Loudspeaker and acoustic transformer therefor |
| GB8726489D0 (en) * | 1987-11-12 | 1987-12-16 | Grunberg R M | Electro-acoustic transducers |
| US4776428A (en) * | 1987-11-16 | 1988-10-11 | Belisle Acoustique Inc. | Sound projection system |
| FR2627886B1 (en) * | 1988-02-29 | 1994-05-13 | Heil Christian | CYLINDRICAL SOUND WAVE GUIDE |
| CN2082935U (en) * | 1990-07-06 | 1991-08-14 | 林光耀 | Bugle type loudspeaker |
| US5117462A (en) * | 1991-03-20 | 1992-05-26 | Jbl Incorporated | Phasing plug for compression driver |
| US5900593A (en) * | 1995-07-31 | 1999-05-04 | Adamson; Alan Brock | Loudspeaker system |
| US6064745A (en) * | 1997-09-26 | 2000-05-16 | Peavey Electronics Corporation | Compression driver phase plug |
| CN2315749Y (en) * | 1997-11-28 | 1999-04-21 | 邹余龙 | Power-operated loudspeaker |
| US6771787B1 (en) * | 1998-09-03 | 2004-08-03 | Bose Corporation | Waveguide electroacoustical transducing |
-
2000
- 2000-09-22 AU AU7633200A patent/AU7633200A/en active Pending
- 2000-09-22 DE DE60043311T patent/DE60043311D1/en not_active Expired - Lifetime
- 2000-09-22 AT AT00965650T patent/ATE448648T1/en not_active IP Right Cessation
- 2000-09-22 EP EP00965650A patent/EP1330936B1/en not_active Expired - Lifetime
- 2000-09-22 CN CNB008200319A patent/CN100413379C/en not_active Expired - Fee Related
- 2000-09-22 WO PCT/AU2000/001157 patent/WO2002025991A1/en active IP Right Grant
- 2000-09-22 AU AU2000276332A patent/AU2000276332B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP1330936A4 (en) | 2006-12-27 |
| ATE448648T1 (en) | 2009-11-15 |
| DE60043311D1 (en) | 2009-12-24 |
| EP1330936A1 (en) | 2003-07-30 |
| CN100413379C (en) | 2008-08-20 |
| EP1330936B1 (en) | 2009-11-11 |
| CN1461577A (en) | 2003-12-10 |
| AU2000276332B2 (en) | 2005-03-10 |
| WO2002025991A1 (en) | 2002-03-28 |
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