WO2006022379A1 - アレイスピーカ装置 - Google Patents
アレイスピーカ装置 Download PDFInfo
- Publication number
- WO2006022379A1 WO2006022379A1 PCT/JP2005/015561 JP2005015561W WO2006022379A1 WO 2006022379 A1 WO2006022379 A1 WO 2006022379A1 JP 2005015561 W JP2005015561 W JP 2005015561W WO 2006022379 A1 WO2006022379 A1 WO 2006022379A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speaker
- array
- frequency
- unit
- speaker device
- Prior art date
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
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
Definitions
- the present invention relates to an array speaker device that outputs a sound signal from a plurality of speaker units by controlling directivity toward a desired position in space.
- FIG. 4 is a plan view of a baffle plate of a conventional array speaker device.
- 101 is a baffle plate on the front surface of the array speaker device
- 102 is a speaker unit attached to the baffle plate 101
- L is an array length
- P is an array pitch.
- a feature of the array speaker device is that a beam-like audio signal having directivity in a desired focal direction can be output.
- Patent Document 1 JP-A-5-41897
- the conventional array speaker device has a problem that the cost is increased, and further, a condition for reducing the frequency limit of directivity control and a condition for increasing the frequency range.
- a condition for reducing the frequency limit of directivity control and a condition for increasing the frequency range.
- the present invention has been made to solve the above-described problems, can reduce costs, and can independently set a high frequency limit and a low frequency limit of directivity control.
- An object of the present invention is to provide an array speaker device.
- the present invention has the following configuration.
- a first speaker array comprising a plurality of linearly arranged speaker units for outputting an audio signal in the first frequency band of the audio signals
- a second speaker array comprising a plurality of linearly arranged speaker units for outputting an audio signal of a second frequency band different from the first frequency band of the audio signals;
- An array speaker device characterized in that the type of the first speaker array is different from the type of the second speaker array.
- the first frequency band is lower than the second frequency band
- An array speaker device wherein a length of the first speaker array in the speaker arrangement direction is longer than a length of the second speaker array in the speaker arrangement direction.
- An array speaker device characterized in that a pitch between a plurality of speaker units constituting the first speaker array is longer than a pitch between a plurality of speaker units constituting the second speaker array.
- the diameter of each speaker unit of the first speaker array is larger than the diameter of each speaker unit of the second speaker array.
- the array speaker device characterized in that the kind of speaker units constituting the first speaker array is different from the kind of speaker units constituting the second speaker array.
- the reproduction frequency band of an audio signal is divided into a plurality of types, and a plurality of types of speaker units corresponding to the divided bands are used.
- the cost of the speaker unit can be reduced.
- the diameter of the speaker unit responsible for high sounds can be reduced, the array pitch of the speaker array for high sounds can be reduced, and the high frequency limit of directivity control of the array force device can be increased.
- the high frequency reproduction frequency limit of the high-frequency sound power unit itself can be increased.
- the diameter of the speaker unit that handles bass can be increased, the array length required to lower the low frequency limit of the directivity control of the array speaker device is smaller than the conventional speaker power quantity. Can be realized.
- the low frequency reproduction frequency limit of the bass speaker unit itself can be lowered.
- the high frequency of directivity control The frequency limit and the low frequency limit can be set independently.
- the present invention can be applied to an array speaker device.
- FIG. 1 is a plan view of a baffle plate of an array speaker device according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a circuit configuration of the array speaker device according to the embodiment of the present invention.
- FIG. 3 is a diagram for explaining the principle of directivity control of the array speaker device.
- FIG. 4 is a plan view of a baffle plate of a conventional array speaker device.
- FIG. 1 is a plan view of a baffle plate of an array speaker device according to an embodiment of the present invention.
- 1 is a baffle plate
- 2 is a high-frequency loudspeaker unit that reproduces high-frequency components above the crossover frequency of the input audio signal
- 3 is low-frequency components below the crossover frequency of the input audio signal.
- Low-pitched speaker unit HL is the array length of a high-pitched speaker array that has two high-pitched speaker units
- LL is the array length of a low-pitched speaker array that consists of multiple low-pitched speaker units 3
- HP is the length of a high-pitched speaker array
- the array pitch, LP is the array pitch of the bass speaker array.
- the reproduction frequency band of the array speaker device is divided into a plurality of types, and a plurality of types of speaker units corresponding to the divided bands are arranged linearly for each corresponding band.
- the reproduction frequency band is divided into two, and the high-pitched speaker unit 2 and the low-pitched speaker unit 3 are respectively arranged in a straight line.
- the high-pitched speaker unit 2 and the low-pitched speaker unit 3 are arranged with pitches HP and LP corresponding to the respective diameters.
- the diameter of the high sound speaker unit 2 is smaller than that of the conventional speaker unit 102.
- the array length HL of the loudspeaker array should be set to a length that is sufficient for directivity control up to the crossover frequency.
- the high frequency limit of the directivity control that the bass speaker unit 3 is responsible for is up to the crossover frequency Therefore, the diameter of the bass speaker unit 3 is larger than that of the conventional speaker unit 102.
- the array length LL of the loudspeaker speaker array may be set to a length that matches the low frequency limit design value of the directivity control of the array speaker device.
- FIG. 2 is a block diagram showing a circuit configuration of the array speaker device of FIG.
- the array spinning device consists of a high-pitched speaker unit 2 (2-l to 2-n), a low-pitched speaker unit 3 (3-l to 3-m), an AZD converter 4, and a digital signal processor (DSP) 5 D ZA converters 6 (6-1 — 6—n), 7 (7-1—7—m), and amplifiers 8 (8—1-8— ⁇ ), 9 (9 1-9 m) Have.
- the DSP 5 has finalizers 51 and 52, a delay ⁇ 54, and ⁇ 1 ” ⁇ 55.
- the filters 51 and 52 constitute dividing means, and the delay units 53 and 54 and the control unit 55 constitute directivity control means.
- the AZD converter 4 converts the input audio signal into a digital signal and outputs it to the DSP 5. If the input audio signal is a digital signal, input it directly to DSP5 without going through the AZD converter 4! Needless to say! /.
- the filter 51 of the DSP 5 extracts a high frequency component of the input audio signal, and the filter 52 extracts a low frequency component.
- the high-frequency components of the input audio signal that have passed through the filter 51 are input to the delay unit 53, and n high-frequency components (the number of high-frequency speaker units 2) to which delay times are added by the delay unit 53, respectively. It becomes.
- the sound to be played is adjusted so as to be directed to a predetermined focus in space.
- the delay time of the delay unit 53 is calculated for each speaker unit by the control unit 55 based on the focus position and the positions of the speaker units 2-1 to 2 -n, and is set in the delay unit 53.
- the low-frequency components of the input audio signal that have passed through the filter 52 are input to the delay unit 54, and m (the number of low-frequency speaker units 3) each having a delay time added thereto by the delay unit 54. It becomes a low-frequency component.
- the radiated sound is adjusted so as to be directed to a predetermined focal point in space.
- the delay time of the delay unit 54 is set for each speaker unit by the control unit 55 based on the focus position and the positions of the speaker units 3-1 to 3 -m, as in the case of the high frequency component.
- the n high frequency components to which the delay time is added by the delay unit 53 are converted into analog signals by the DZA converters 6-1 to 6-n, while the delay time is added by the delay unit 54
- the m low frequency components are converted to analog signals by DZA converters 7-1 to 7-m.
- the amplifiers 8-1 to 8-n amplify the output signals of the DZA converters 6-1 to 6-n to drive the high-pitched speaker units 2-1 to 2-n
- the amplifiers 9-1 to 9- n amplifies the output signals of the D ZA converters 7-l to 7-m and drives the bass speaker units 3-1 to 3-m.
- the high-frequency component and low-frequency component of the audio signal can be output toward a predetermined focal point, respectively.
- the high-pitched speaker unit 2 and the low-pitched speaker unit 3 are arranged in a straight line, respectively, so that a plurality of speaker units are arranged in a matrix, compared to a conventional array speaker device.
- the number of speaker units can be reduced and costs can be reduced.
- the directivity in the horizontal direction (left-right direction in FIG. 1) is regarded as important. For this reason, the high-pitched speaker unit 2 and the low-pitched speaker unit 3 are arranged in a straight line in the horizontal direction.
- the following effects are achieved by dividing the reproduction frequency band of the array speaker apparatus and using the speaker units 2 and 3 corresponding to the divided frequency bands. That is, the low frequency of directivity control that the loudspeaker speaker unit 2 is responsible for Since the limit is up to the crossover frequency, the low frequency reproduction frequency limit of the speaker unit itself is smaller than the conventional speaker unit that handles the entire band, and the diameter of the high-sounding speech force unit 2 is reduced. be able to. As a result, the array pitch HP of the loudspeaker speaker array can be reduced, so that the high frequency limit of directivity control of the array speaker device can be increased.
- the low frequency limit of directivity control that the loudspeaker unit 2 is responsible for may be up to the crossover frequency, so the array length HL of the loudspeaker array can be shortened, and as a result, the loudspeaker unit The quantity of 2 can be reduced.
- the array pitch LP of the low-frequency speaker array can be larger than the conventional array pitch P.
- the diameter of the bass speaker unit 3 can be increased.
- the array length LL required to reduce the low frequency limit of directivity control of the array speaker device can be realized with a smaller number of speakers than in the past.
- the diameter of the low-frequency speaker unit 3 can be increased, the low frequency reproduction frequency limit of the speaker unit itself can be reduced.
- the configuration of the DSP 5 shown in FIG. 1 is a schematic representation of internal processing, and is not limited to the configuration of FIG. It is also possible to perform sound field processing on audio signals as needed inside DSP5.
- the force shown in the example in which the array speaker device is made two-way is not limited to this.
- the reproduction frequency band is divided into three, and the high-frequency speaker unit and the middle speaker unit are divided.
- the speaker unit for sound and the speaker unit for bass are arranged in a straight line, and the array speaker device is made in 3 ways!
- a plurality of speaker units for each power band may be arranged in multiple rows in which one example of speaker units for each band is arranged.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004248310A JP4124182B2 (ja) | 2004-08-27 | 2004-08-27 | アレイスピーカ装置 |
JP2004-248310 | 2004-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006022379A1 true WO2006022379A1 (ja) | 2006-03-02 |
Family
ID=35967581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015561 WO2006022379A1 (ja) | 2004-08-27 | 2005-08-26 | アレイスピーカ装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4124182B2 (ja) |
WO (1) | WO2006022379A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018045133A1 (en) | 2016-08-31 | 2018-03-08 | Harman International Industries, Incorporated | Variable acoustics loudspeaker |
US10631115B2 (en) | 2016-08-31 | 2020-04-21 | Harman International Industries, Incorporated | Loudspeaker light assembly and control |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005197896A (ja) | 2004-01-05 | 2005-07-21 | Yamaha Corp | スピーカアレイ用のオーディオ信号供給装置 |
JP4251077B2 (ja) | 2004-01-07 | 2009-04-08 | ヤマハ株式会社 | スピーカ装置 |
JP3915804B2 (ja) | 2004-08-26 | 2007-05-16 | ヤマハ株式会社 | オーディオ再生装置 |
JP4779381B2 (ja) | 2005-02-25 | 2011-09-28 | ヤマハ株式会社 | アレースピーカ装置 |
JP2007259088A (ja) * | 2006-03-23 | 2007-10-04 | Yamaha Corp | スピーカ装置およびオーディオシステム |
TW200818964A (en) * | 2006-07-13 | 2008-04-16 | Pss Belgium Nv | A loudspeaker system having at least two loudspeaker devices and a unit for processing an audio content signal |
JP4506765B2 (ja) * | 2007-02-20 | 2010-07-21 | ヤマハ株式会社 | スピーカアレイ装置および信号処理方法 |
JP4962047B2 (ja) * | 2007-03-01 | 2012-06-27 | ヤマハ株式会社 | 音響再生装置 |
JP5082517B2 (ja) * | 2007-03-12 | 2012-11-28 | ヤマハ株式会社 | スピーカアレイ装置および信号処理方法 |
KR101290149B1 (ko) * | 2009-12-11 | 2013-07-26 | 한국전자통신연구원 | 접이식 지향성 스피커 어레이 모듈 |
JP4920102B2 (ja) | 2010-07-07 | 2012-04-18 | シャープ株式会社 | 音響システム |
WO2016056410A1 (ja) | 2014-10-10 | 2016-04-14 | ソニー株式会社 | 音声処理装置および方法、並びにプログラム |
JP6236503B1 (ja) * | 2016-09-16 | 2017-11-22 | シャープ株式会社 | 音響装置、表示装置、およびテレビジョン受像機 |
WO2021049704A1 (ko) * | 2019-09-10 | 2021-03-18 | 주식회사 신안정보통신 | 평면파 합성 기법을 이용한 수평 어레이형 음향 재생 장치 및 시스템 |
KR102081957B1 (ko) * | 2019-09-10 | 2020-02-26 | 주식회사 신안정보통신 | 평면파 합성 기법을 이용한 수평 어레이형 음향 재생 장치 |
Citations (10)
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JPH0541897A (ja) * | 1991-08-07 | 1993-02-19 | Pioneer Electron Corp | スピーカ装置およびその指向性制御方法 |
JPH06225379A (ja) * | 1993-01-25 | 1994-08-12 | Matsushita Electric Ind Co Ltd | 指向性スピーカ装置 |
JPH06261385A (ja) * | 1993-03-05 | 1994-09-16 | Matsushita Electric Ind Co Ltd | 指向性スピーカ装置 |
JPH07203581A (ja) * | 1993-12-29 | 1995-08-04 | Matsushita Electric Ind Co Ltd | 指向性スピーカシステム |
JPH09233591A (ja) * | 1996-02-22 | 1997-09-05 | Sony Corp | スピーカ装置 |
JP2001513619A (ja) * | 1997-08-05 | 2001-09-04 | ニュー トランスデューサーズ リミテッド | 音波放射装置/システム |
JP2002315088A (ja) * | 2001-04-07 | 2002-10-25 | Daimlerchrysler Ag | 超音波に基づいたパラメトリックスピーカシステム |
JP2003023689A (ja) * | 2001-07-09 | 2003-01-24 | Sony Corp | 可変指向性超音波スピーカシステム |
JP2003235092A (ja) * | 2003-02-21 | 2003-08-22 | Yamaha Corp | 指向性拡声装置 |
JP2004186895A (ja) * | 2002-12-02 | 2004-07-02 | Sony Corp | スピーカ装置 |
-
2004
- 2004-08-27 JP JP2004248310A patent/JP4124182B2/ja not_active Expired - Fee Related
-
2005
- 2005-08-26 WO PCT/JP2005/015561 patent/WO2006022379A1/ja active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0541897A (ja) * | 1991-08-07 | 1993-02-19 | Pioneer Electron Corp | スピーカ装置およびその指向性制御方法 |
JPH06225379A (ja) * | 1993-01-25 | 1994-08-12 | Matsushita Electric Ind Co Ltd | 指向性スピーカ装置 |
JPH06261385A (ja) * | 1993-03-05 | 1994-09-16 | Matsushita Electric Ind Co Ltd | 指向性スピーカ装置 |
JPH07203581A (ja) * | 1993-12-29 | 1995-08-04 | Matsushita Electric Ind Co Ltd | 指向性スピーカシステム |
JPH09233591A (ja) * | 1996-02-22 | 1997-09-05 | Sony Corp | スピーカ装置 |
JP2001513619A (ja) * | 1997-08-05 | 2001-09-04 | ニュー トランスデューサーズ リミテッド | 音波放射装置/システム |
JP2002315088A (ja) * | 2001-04-07 | 2002-10-25 | Daimlerchrysler Ag | 超音波に基づいたパラメトリックスピーカシステム |
JP2003023689A (ja) * | 2001-07-09 | 2003-01-24 | Sony Corp | 可変指向性超音波スピーカシステム |
JP2004186895A (ja) * | 2002-12-02 | 2004-07-02 | Sony Corp | スピーカ装置 |
JP2003235092A (ja) * | 2003-02-21 | 2003-08-22 | Yamaha Corp | 指向性拡声装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018045133A1 (en) | 2016-08-31 | 2018-03-08 | Harman International Industries, Incorporated | Variable acoustics loudspeaker |
EP3507992A4 (en) * | 2016-08-31 | 2020-03-18 | Harman International Industries, Incorporated | SPEAKERS WITH VARIABLE ACOUSTICS |
US10631115B2 (en) | 2016-08-31 | 2020-04-21 | Harman International Industries, Incorporated | Loudspeaker light assembly and control |
US10645516B2 (en) | 2016-08-31 | 2020-05-05 | Harman International Industries, Incorporated | Variable acoustic loudspeaker system and control |
US10728666B2 (en) | 2016-08-31 | 2020-07-28 | Harman International Industries, Incorporated | Variable acoustics loudspeaker |
US11070931B2 (en) | 2016-08-31 | 2021-07-20 | Harman International Industries, Incorporated | Loudspeaker assembly and control |
Also Published As
Publication number | Publication date |
---|---|
JP2006067301A (ja) | 2006-03-09 |
JP4124182B2 (ja) | 2008-07-23 |
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