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EP1216600B1 - Haut-parleur multiple - Google Patents

Haut-parleur multiple Download PDF

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Publication number
EP1216600B1
EP1216600B1 EP00978952A EP00978952A EP1216600B1 EP 1216600 B1 EP1216600 B1 EP 1216600B1 EP 00978952 A EP00978952 A EP 00978952A EP 00978952 A EP00978952 A EP 00978952A EP 1216600 B1 EP1216600 B1 EP 1216600B1
Authority
EP
European Patent Office
Prior art keywords
low
pass filter
loudspeaker
loudspeakers
phase
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.)
Expired - Lifetime
Application number
EP00978952A
Other languages
German (de)
English (en)
Other versions
EP1216600A2 (fr
Inventor
Martin Kling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19951406A external-priority patent/DE19951406B4/de
Application filed by Individual filed Critical Individual
Publication of EP1216600A2 publication Critical patent/EP1216600A2/fr
Application granted granted Critical
Publication of EP1216600B1 publication Critical patent/EP1216600B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Definitions

  • the invention relates to a loudspeaker combination consisting of at least two loudspeakers, one of which is preceded by a low-pass frequency filter and the other a phase shifter.
  • Such a speaker combination is from the DE 44 47 269 C1 Fig. 2 known.
  • the electrical signals to be converted into acoustic signals are fed to two loudspeakers, wherein one loudspeaker is preceded by a low-pass filter, the other loudspeaker is preceded by a high-pass filter, so that the low frequencies are used with one loudspeaker and the high frequencies with the other loudspeaker be radiated. Since this form of frequency division and frequency separation is unsatisfactory, a phase shifter has been arranged between the high-pass filter and the tweeter with which the phase position of the tweeter signal is rotated by 180 °. This rectangle pulses are to be played satisfactorily, for music and voice transmission, the transmission quality is unsatisfactory.
  • Another circuit for frequency division is from the DE 28 02 938 A1 become known, in which a separate low-pass filter is provided for each frequency range, each having an addition circuit for a feedback of inverted signals from the next lower Frequency range is preceded so that each frequency range only frequencies associated with it, but not also frequencies from a neighboring area.
  • the frequency band to be transmitted is divided into several bands and assigned to several membranes of different sizes.
  • Large and heavy membranes transmit the low frequency range, smaller lighter membranes transmit the higher frequency ranges.
  • the problem arises of different bundling factors, phase responses and group delay of the individual systems, so that resulting discontinuities in the emission and transition area can be avoided.
  • loudspeakers of known types do not meet the requirements for a high quality of voice and sound transmission, numerous attempts have been made to improve the transmission quality by combining loudspeakers of different and the same type with and without upstream frequency filters. In these designs, there is also the problem of different bundling factors, phase responses and group delays of the individual systems and thus there are discontinuities in the radiation and transmission behavior of the overall system in the transition region. In addition, interference between the systems outside the main radiation axis leads to discontinuities in the transmission measure.
  • the invention avoids the disadvantages of the prior art. It is the object of the invention to provide a simple combination of a speaker combination, the frequency response and radiation characteristics is significantly improved and reaches a good sound quality in the low frequency range without special woofer
  • the invention consists in that, of the at least two loudspeakers, at least one, which is preceded by the low-pass frequency filter, transmits only tones of the low-frequency range because of this low-pass frequency filter, and at least one other, preceded by the phase shifter, both tones of this low-frequency range Also, at least tones of medium frequencies radiates, and that this both low-frequency sound and mid-frequency sounding speakers in the phase adjustment of its low frequency range by the phase shifter on the phase of the only sounds of the low tone range radiating speaker is tuned.
  • the simplest embodiment of the invention consists in that the loudspeaker combination of the two loudspeakers, one of which is preceded by only one low-pass frequency filter so that it emits only tones of the low-frequency range, and the other loudspeaker alone is preceded by a phase shifter, so that it tones both the middle and the low tone range radiates, and that this sound of both the low and the middle tone range radiating speakers is tuned in the phase adjustment of its low frequency range by the phase shifter on the phase of the woofer.
  • the technical complexity is low, the possible improvement of the radiation characteristics, however, striking.
  • the phase adjustment is ok in a simple manner. This achieves a slight adaptation to the respective room to be sounded.
  • the speech intelligibility and the music suitability is significantly improved. It achieves a largely frequency-independent bundling of sound radiation without pronounced side lobes. It is achieved a very homogeneous and interferrenzarmes radiation behavior.
  • the basic idea of the invention is: It is possible to use a plurality of principally identically constructed loudspeakers, all or at least the majority of the loudspeakers can transmit the low tones, whereby the loudspeakers, which in addition to the low frequencies also have to transmit higher frequencies, change their phase position be that the low frequencies of all speakers that emit low frequencies are radiated in the same phase.
  • a large loudspeaker area transmits the low frequencies, a smaller one the medium and high frequencies. This results in better transmission results than can be achieved with designed for separate frequency ranges in their design speakers.
  • Another embodiment of the invention with a division of the low frequency range is that in addition to the speaker combination in which a low-pass filter and the other second loudspeaker an all-pass filter is preceded by phase shifter, another, additional third sounds in addition to tones middle frequency also tones of the woofer radiating speaker is provided with upstream all-pass filter, that in addition to the second loudspeaker upstream all-pass filter, a low-pass filter is connected upstream, but compared to the first speaker upstream low-pass filter has a higher upper pass frequency, and that the additional third speaker to the all-pass filter another all-pass filter is preceded by phase shifter, said one all-pass filter in its phase position on the first loudspeaker upstream low-pass filter and the other all-pass filter is tuned to the second loudspeaker upstream low-pass filter, while d the all-pass filter before the time speaker is tuned to the low-pass filter in front of the first loudspeaker in its phase position.
  • the three speakers of this speaker combination amplifier can be connected upstream as active switching elements, in such a way that a loudspeaker amplifier is preceded by a low-pass filter, the second speaker with amplifier, a low-pass filter and in its phase on the low-pass filter of the former speaker tuned all-pass filter with phase shifter upstream, that is supplied via a tap between the all-pass filter and the low-pass filter of the second loudspeaker equipped with the amplifier third speaker, which is preceded by an all-pass filter, this all-pass filter is tuned to the low-pass filter before the former speaker.
  • the speaker (s) connected to the low-pass filter and the speaker (s) connected to the phase shifter may be identical or very similar in their type and size. This provides not only price advantages when purchasing larger quantities of speakers of the same type, but also acoustic benefits of various kinds. Deep tones are emitted from several speakers in phase, high tones only from a single speaker or a few speakers the same radiation characteristics.
  • phase shifter is an all-pass filter with a phase shifter.
  • a further loudspeaker is provided in this combination, which has both a low-pass filter,
  • a higher upper pass frequency, as well as a phase shifter is connected upstream, which is tuned in its phase adjustment to the phase of the woofer, and that at least one tweeter with upstream high-pass filter is also provided in this speaker combination.
  • the all-pass filter is constructed entirely of passive switching elements.
  • the all-pass filter can also be constructed of active and passive switching elements.
  • the two identical or very similar speakers one of which a low-pass filter, the other a phase shifter is connected upstream, are housed together with a tweeter in a common housing.
  • the speaker combination may also be a speaker line in which the speakers are housed in an elongated housing and form a speaker line.
  • the woofer is arranged at the ends or at the outer sides of the loudspeaker line.
  • the loudspeaker combination according to the invention consists in its in Fig.1 and 2 shown base circuit of two identically built, built in a housing 1 speakers 2.3, of which a loudspeaker 3 is a low-pass frequency filter 4 is connected upstream.
  • the other loudspeaker 2 is preceded by an all-pass filter 5 with a phase shifter, which is tuned in its phase adjustment to the phase position of the loudspeaker 3 intended for the emission of deep tones.
  • both speakers are 2.3 of the same design and design and are not built specifically or only to a limited extent for the emission of low frequencies and are well suited for the radiation of medium frequencies in their geometric design, is in this combination with the assumption of a suitable phase matching of the Allpass filters 5 a better radiation result achieved when using different, adapted to specific frequency ranges speakers.
  • the amplifiers 6, 7 are added to the passive components as active components.
  • Figure 3 is the speaker combination opposite the base circuit ( Fig.1 ) To another speaker 8, also of the same design and design as the speakers 2 and 3, extended.
  • the speaker 3 as in the basic circuit of Fig.1 a low-pass filter 4 and the loudspeaker 2 an all-pass filter 5 is connected upstream with phase shifter, in addition to the all-pass filter 5 is preceded by a low-pass filter 9, however, compared to the low-pass filter 4 has a higher upper pass frequency.
  • the additional loudspeaker 8 are now preceded by two additional all-pass filters 10 and 11 with phase shifters.
  • the all-pass filter 10 is tuned in its phase to the loudspeaker 3 upstream low-pass filter 4 and the all-pass filter 11 on the speaker 2 upstream low-pass filter 9, while the all-pass filter 5 is tuned as in the base circuit to the low-pass filter 4 in its phase position.
  • the all-pass filter 5, 10, 11 achieves a better radiation result than when different loudspeakers adapted to specific frequency ranges are used.
  • the low-pass filter 4 to be designed for an upper pass frequency of 250 Hz and the low-pass filter 9 to an upper pass frequency of 500 Hz.
  • Each of the three loudspeakers 2, 3, 8 is preceded by an amplifier 6, 7, 12 as an active element.
  • Via a tap between the all-pass filter 5 and the low-pass filter 9, the equipped with the amplifier 6 speaker 8 is supplied to an all-pass filter 11 is connected upstream. This is matched to the low-pass filter 9, while the all-pass filter 5 is tuned to the low-pass filter 4.
  • a tweeter 14 is also installed in the housing 1. This is preceded by a high-pass filter 13, for example, passes frequencies higher than 2 KHz.
  • the loudspeaker 3 is preceded by a low-pass filter 4 with an upper pass frequency of 500 Hz, for example, and this is another Low-pass filter 15 upstream with an upper pass frequency of 2 KHz.
  • the loudspeaker 2 is connected to an all-pass filter 5 with phase shifter and this to a tap between the two low-pass filters 4 and 5.
  • Figure 6 shows the basic circuit of Fig.1 with a doubled number of speakers in a housing 1, in which the depth radiating speakers are arranged on the outsides of the speaker line.
  • Filters which can also be used are those which digitally process signals and audio pulses of different frequencies.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Claims (9)

  1. Combinaison de haut-parleurs, composée au moins de deux haut-parleurs (2, 3), un filtre de fréquence passe-bas (4) étant monté en série avec l'un (3) et un déphaseur (5) étant monté en série avec l'autre (2), caractérisée en ce que, parmi les au moins deux haut-parleurs (2,3), au moins l'un avec lequel le filtre de fréquence passe-bas (4) est monté en série, émet à cause de ce filtre de fréquence passe-bas (4) seulement des sons du domaine des fréquences graves, et au moins un autre, avec lequel le déphaseur (5) est monté en série, émet aussi bien des sons de ce domaine des fréquences graves qu'au moins des sons des fréquences moyennes; et en ce que ce haut-parleur (2) émettant aussi bien des sons du domaine inférieur des fréquences graves que des sons de fréquences moyennes est accordé par le déphaseur (5), dans le réglage de phase de son domaine des fréquences graves, sur la position de phase du haut parleur (3) émettant seulement des sons du domaine des fréquences graves.
  2. Combinaison de haut-parleurs, composée de deux haut-parleurs (2, 3), un filtre de fréquence passe-bas (4) étant monté en série avec l'un (3) et un déphaseur (5) étant monté en série avec l'autre (2), caractérisée en ce que, dans cette combinaison de haut-parleurs des deux haut-parleurs (2, 3), un seul filtre de fréquence passe-bas (4) est monté en série avec l'un (3) de sorte qu'il émette seulement des sons du domaine des fréquences graves, et seul un déphaseur (5) est monté en série avec l'autre haut-parleur (2) de sorte qu'il émette des sons aussi bien du domaine des fréquences moyennes que du domaine des fréquences graves,
    et le haut-parleur (2), émettant des tons aussi bien du domaine des fréquences graves que du domaine des fréquences moyennes, est accordé par le déphaseur (5), dans le réglage de phase de son domaine des fréquences graves, sur la position de phase du haut-parleur (3) de fréquences graves.
  3. Combinaison de haut-parleurs, composée au moins de deux haut-parleurs (2, 3), un premier filtre passe-bas (4) étant monté en série avec un premier haut-parleur (3) et qu'un déphaseur (5) est monté en série avec un deuxième haut-parleur (2),
    caractérisée en ce que,
    dans cette combinaison, le déphaseur est réalisé par un premier filtre passe-tout, et qu'il est prévu un autre haut-parleur (8), supplémentaire, émettant en plus des sons de fréquences moyennes également des sons du domaine des fréquences graves, avec lequel un deuxième filtre passe-tout (10) monté en série,
    en ce que, en plus du premier filtre passe-tout (5) monté en série avec le deuxième haut-parleur (2), un deuxième filtre passe-bas (9) est monté en série, lequel présente toutefois une bande passante haute plus élevée par rapport au premier filtre passe-bas (4),
    et en ce que, en plus du deuxième filtre passe-tout (10), un autre troisième filtre passe-tout (11) avec un déphaseur est monté en série avec le haut-parleur supplémentaire (8), le deuxième filtre passe-tout (10) étant accordé dans sa position de phase sur le filtre passe-bas (4) monté en série avec le premier haut-parleur (3) et que le troisième filtre passe-tout (11) est accordé sur le filtre passe-bas (9) monté en série avec le deuxième haut-parleur (2),
    tandis que le premier filtre passe-tout (5) est accordé sur le premier filtre passe-bas (4) dans sa position de phase.
  4. Combinaison de haut-parleurs, composée au moins de trois haut-parleurs (2, 3, 8), dans laquelle des amplificateurs (6, 7, 12), en tant qu'éléments de circuit actifs, sont montés en série avec les haut-parleurs (2, 3, 8), seulement un premier filtre passe-bas (4) étant monté en série avec un premier haut-parleur (3) de ces haut-parleurs avec amplificateur (7), un deuxième filtre passe-bas (9) et un premier filtre passe-tout (5) avec déphaseur accordé dans sa position de phase sur le premier filtre passe-bas (4) sont montés en série avec un deuxième haut-parleur (2) de ces haut-parleurs avec amplificateur (12) ; dans laquelle par le biais d'un branchement entre le premier filtre passe-tout (5) et le deuxième filtre passe-bas (9) est alimenté un troisième haut-parleur (8) équipé d'un amplificateur (6), avec lequel est monté en série un deuxième filtre passe-tout (11), celui-ci étant accordé dans sa position de phase sur le deuxième filtre passe-bas (9), tandis que le premier filtre passe-tout (5) est accordé dans sa position de phase sur le premier filtre passe-bas (4).
  5. Combinaison de haut-parleurs selon une des revendications 1, 2, 3 ou 4, caractérisée en ce qu'au moins un des haut-parleurs (2, 8), émettant également des sons du domaine des fréquences moyennes, de cette combinaison de haut-parleurs est de même type et de même forme de construction que le haut-parleur (3) avec le filtre passe-bas monté en série (4).
  6. Combinaison de haut-parleurs selon l'une des revendications 1, 2, 3 ou 4, caractérisée en ce que tous ou au moins plusieurs haut-parleurs (2, 3, 8) de cette combinaison de haut-parleurs ont une caractéristique de fréquence identique ou au moins très semblable.
  7. Combinaison de haut-parleurs selon l'une des revendications 1, 2, 3 ou 4, caractérisée en ce que tous ou au moins plusieurs haut-parleurs (2, 3, 8) de cette combinaison de haut-parleur sont de même type et de même forme de construction.
  8. Combinaison de haut-parleurs selon l'une des revendications 1, 2, 3 ou 4, caractérisée en ce que le déphaseur (5) est un filtre passe-tout avec un élément de déphasage.
  9. Combinaison de haut-parleurs selon l'une des revendications 1, 2, 3 ou 4, caractérisée en ce que, dans cette combinaison de haut-parleurs, il est prévu en plus au moins un haut-parleur de sons aigus (14) avec un filtre passe-haut monté en série (13).
EP00978952A 1999-10-01 2000-09-28 Haut-parleur multiple Expired - Lifetime EP1216600B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19947178 1999-10-01
DE19947178 1999-10-01
DE19951406 1999-10-26
DE19951406A DE19951406B4 (de) 1999-10-01 1999-10-26 Lautsprecherkombination
PCT/DE2000/003378 WO2001026412A2 (fr) 1999-10-01 2000-09-28 Haut-parleur multiple

Publications (2)

Publication Number Publication Date
EP1216600A2 EP1216600A2 (fr) 2002-06-26
EP1216600B1 true EP1216600B1 (fr) 2008-02-20

Family

ID=26055134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00978952A Expired - Lifetime EP1216600B1 (fr) 1999-10-01 2000-09-28 Haut-parleur multiple

Country Status (6)

Country Link
US (1) US7088833B1 (fr)
EP (1) EP1216600B1 (fr)
JP (1) JP2003511928A (fr)
AT (1) ATE387074T1 (fr)
DE (1) DE50014983D1 (fr)
WO (1) WO2001026412A2 (fr)

Families Citing this family (14)

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JP4134755B2 (ja) 2003-02-28 2008-08-20 ヤマハ株式会社 スピーカーアレイ駆動装置
JP2005027163A (ja) * 2003-07-04 2005-01-27 Pioneer Electronic Corp 音声データ処理装置、音声データ処理方法、そのプログラム、および、そのプログラムを記録した記録媒体
JP2005184040A (ja) * 2003-12-15 2005-07-07 Sony Corp 音声信号処理装置及び音声信号再生システム
US8565447B2 (en) * 2004-07-08 2013-10-22 James K. Waller, Jr. Active instrument subwoofer system for low frequency enhancement
US20060018491A1 (en) * 2004-07-20 2006-01-26 Stiles Enrique M Single-sided Bessel array
JP2006014367A (ja) * 2005-08-05 2006-01-12 Pioneer Electronic Corp 音声データ処理方法
TW201108757A (en) * 2009-08-20 2011-03-01 Cotron Corp Audio adapter, earphone and speaker box
EP2667269B1 (fr) 2012-05-25 2014-12-17 Siemens Aktiengesellschaft Procédé de fonctionnement d'un système d'automatisation redondant
EP2701065B1 (fr) 2012-08-24 2015-02-25 Siemens Aktiengesellschaft Procédé de fonctionnement d'un système d'automatisation redondant
EP2765464A1 (fr) 2013-02-08 2014-08-13 Siemens Aktiengesellschaft Procédé de fonctionnement d'un système d'automatisation redondant
CN105100999A (zh) * 2015-09-01 2015-11-25 深圳第一蓝筹科技有限公司 一种双阻抗耳机
KR102302226B1 (ko) * 2016-08-01 2021-09-15 블루프린트 어쿠스틱스 피티와이 엘티디 신호 경로에서의 왜곡을 관리하기 위한 장치 및 방법
GB2560878B (en) 2017-02-24 2021-10-27 Google Llc A panel loudspeaker controller and a panel loudspeaker
AU2020363457A1 (en) * 2019-10-10 2022-04-07 Blueprint Acoustics Pty Ltd Improved loudspeaker assembly and system for vehicles

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JPS5931279B2 (ja) * 1979-06-19 1984-08-01 日本ビクター株式会社 信号変換回路
JPS61281799A (ja) * 1985-06-07 1986-12-12 Dainabekutaa Kk 音声信号再生方式
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Also Published As

Publication number Publication date
WO2001026412A3 (fr) 2001-11-22
EP1216600A2 (fr) 2002-06-26
WO2001026412A2 (fr) 2001-04-12
DE50014983D1 (de) 2008-04-03
JP2003511928A (ja) 2003-03-25
ATE387074T1 (de) 2008-03-15
US7088833B1 (en) 2006-08-08

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