JP5100970B2 - 音響放射 - Google Patents
音響放射 Download PDFInfo
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- JP5100970B2 JP5100970B2 JP2005064348A JP2005064348A JP5100970B2 JP 5100970 B2 JP5100970 B2 JP 5100970B2 JP 2005064348 A JP2005064348 A JP 2005064348A JP 2005064348 A JP2005064348 A JP 2005064348A JP 5100970 B2 JP5100970 B2 JP 5100970B2
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- waveguide
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- 230000005855 radiation Effects 0.000 title description 7
- 230000007423 decrease Effects 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 10
- 238000013016 damping Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920006382 Lustran Polymers 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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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
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
- H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
(√A)/λ ≦ 1/15(≒0.067)
ここで、Aは導波管出口部の横断面積であり、λは導波管システムの3dB低下する周波数の波長である。1つの例示的な実施例において、低域遮断周波数は55Hzであり、対応する波長λが20.6フィートである。導波管出口部の横断面積Aが2.5平方インチ(0.0174平方フィート)であるとすると、以下の式のようになる。
(√A)/λ = (0.0174)1/2/20.6ft = 0.2ft/20.6ft = 0.0064 < 1/15(≒0.067)
20 幹状導波管セクション
25 開口端部
30 枝状導波管セクション
35 開口端部
40 終端部
50 音響エネルギー源
55 音響ドライバー
80 導波管
85 開口端部ルートノード
90 終端部リーフノード
110 導波管システム
115 幹状セクション
120 開口端部
125 枝状セクション
130 開口端部
135 終端部
145 音響エネルギー源
150 音響ドライバー
200 導波管
235 音響ドライバー
255 幹状セクション
240 右側枝状セクション
250 枝接続部
260 幹開口部
310 横方向通路
320 孔
322 枝状通路、キャビティ
324 減衰材料
330 導波管
332 幹状セクション
334 開口端部
336 枝状セクション
338 キャビティ
340 孔
342 減衰材料
346 終端部
348 開口端部
344 導波管
350 音響ドライバー
352 キャビティ
353 孔
344 導波管
356、358 減衰材料
400 ラジオ
402 ハウジング
404 開口部
406 後部開口部
602 リスニング領域
604 幹開口部604
608 空間
610 空間
Claims (15)
- 空間の方を向く一方の端部に音開口部を含む導波管を備えた音響装置と、
音声源と、
前記導波管の他方の端部においてリスニング領域の方を向く音響ドライバーと、
前記音響装置と前記音声源と前記音響ドライバーとを統合化オーディオシステムとして支持する構造体と、
を備え、
前記音響ドライバーと前記導波管の開口部とが、前記構造体から実質的に異なる方向を向いており、
前記導波管が、幹状部と該幹状部に接続された複数の枝状部とを備えており、
前記枝状部の断面積が、前記枝状部の自由端から前記幹状部と前記枝状部との接続部に至るまで、前記枝状部の長さに沿って連続的に減少していることを特徴とする装置。 - 請求項1に記載の装置において、
前記音響ドライバーと前記導波管の音開口部とが、実質的に反対の方向を向いていることを特徴とする装置。 - 請求項1に記載の装置において、
前記導波管の音開口部が、前記リスニング領域を向いていないことを特徴とする装置。 - 請求項1に記載の装置において、
前記複数の枝状部のそれぞれが、対応する音響ドライバーを有していることを特徴とする装置。 - 請求項1に記載の装置において、
前記導波管の開口端部によって放射される音が、前記音響ドライバーから放射される音とは異なる周波数スペクトルを有していることを特徴とする装置。 - 請求項1に記載の装置において、
前記統合化オーディオシステムが、ラジオを備えていることを特徴とする装置。 - 音声源と、
ハウジングによって支持されるとともにリスニング領域の方を向く音響ドライバーと、
該音響ドライバーによって駆動される一方の端部と第2の開口端部とを有する導波管あるいはポートを含む音響装置と、
前記音声源と前記音響ドライバーと前記音響装置とを統合化オーディオシステムとして支持する前記ハウジングと、
を備え、
前記ハウジングが前記リスニング領域とは異なる方向を向く開放部を有し、該開放部が2つ以上の開口部を備え、前記音響装置の第2の開口端部が、前記ハウジングの開放部から空間によって分離され、かつ、前記開口端部から放射される音が前記開放部を通って通過するように前記開放部に関して方向付けられており、
前記音響装置が、幹状部と該幹状部に接続された複数の枝状部とを有する導波管を備えており、
前記枝状部の断面積が、前記枝状部の自由端から前記幹状部と前記枝状部との接続部に至るまで、前記枝状部の長さに沿って連続的に減少していることを特徴とする装置。 - 請求項7に記載の装置において、
前記開放部が、格子を備えていることを特徴とする装置。 - 請求項7に記載の装置において、
前記開放部が、前記ハウジングにスロットを備えていることを特徴とする装置。 - 請求項7に記載の装置において、
前記空間が、少なくとも、前記音響装置から放射された音について前記ハウジングの開放部によって生じる歪みを実質的に減少させるために十分大きいものであることを特徴とする装置。 - 請求項7に記載の装置において、
前記音響ドライバーと前記音響装置の開口端部とが、実質的に反対の方向を向いていることを特徴とする装置。 - 請求項7に記載の装置において、
前記音響装置の開口端部が、前記リスニング領域の方を向いていないことを特徴とする装置。 - 請求項7に記載の装置において、
前記複数の枝状部のそれぞれが、対応する音響ドライバーを有していることを特徴とする装置。 - 請求項7に記載の装置において、
前記音響装置の開口端部によって放射される音が、前記音響ドライバーによって放射される音とは異なる周波数スペクトルを有していることを特徴とする装置。 - 請求項7に記載の装置において、
前記統合化オーディオシステムが、ラジオを備えていることを特徴とする装置。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/805,440 US7565948B2 (en) | 2004-03-19 | 2004-03-19 | Acoustic waveguiding |
US10/805,440 | 2004-03-19 | ||
US10/914,497 US7584820B2 (en) | 2004-03-19 | 2004-08-09 | Acoustic radiating |
US10/914,497 | 2004-08-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005269634A JP2005269634A (ja) | 2005-09-29 |
JP2005269634A5 JP2005269634A5 (ja) | 2008-04-03 |
JP5100970B2 true JP5100970B2 (ja) | 2012-12-19 |
Family
ID=34841284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005064348A Active JP5100970B2 (ja) | 2004-03-19 | 2005-03-08 | 音響放射 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7584820B2 (ja) |
EP (1) | EP1577880B1 (ja) |
JP (1) | JP5100970B2 (ja) |
CN (1) | CN1671248B (ja) |
HK (1) | HK1079954B (ja) |
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US7584820B2 (en) | 2004-03-19 | 2009-09-08 | Bose Corporation | Acoustic radiating |
-
2004
- 2004-08-09 US US10/914,497 patent/US7584820B2/en active Active
-
2005
- 2005-03-08 JP JP2005064348A patent/JP5100970B2/ja active Active
- 2005-03-10 EP EP05101864.6A patent/EP1577880B1/en active Active
- 2005-03-21 CN CN200510054274XA patent/CN1671248B/zh active Active
- 2005-12-30 HK HK05112192.6A patent/HK1079954B/zh unknown
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EP1577880A2 (en) | 2005-09-21 |
CN1671248A (zh) | 2005-09-21 |
US20050205349A1 (en) | 2005-09-22 |
JP2005269634A (ja) | 2005-09-29 |
US7584820B2 (en) | 2009-09-08 |
HK1079954A1 (en) | 2006-04-13 |
EP1577880A3 (en) | 2006-11-02 |
EP1577880B1 (en) | 2021-05-19 |
HK1079954B (zh) | 2011-11-25 |
CN1671248B (zh) | 2011-06-29 |
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