EP2396973A1 - Haut-parleur plat - Google Patents

Haut-parleur plat

Info

Publication number
EP2396973A1
EP2396973A1 EP10702679A EP10702679A EP2396973A1 EP 2396973 A1 EP2396973 A1 EP 2396973A1 EP 10702679 A EP10702679 A EP 10702679A EP 10702679 A EP10702679 A EP 10702679A EP 2396973 A1 EP2396973 A1 EP 2396973A1
Authority
EP
European Patent Office
Prior art keywords
array
loudspeaker
loudspeakers
individual
housing
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.)
Granted
Application number
EP10702679A
Other languages
German (de)
English (en)
Other versions
EP2396973B1 (fr
Inventor
Thomas Sporer
Daniel Beer
Stephan Mauer
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to EP10702679.1A priority Critical patent/EP2396973B1/fr
Priority to EP17158435.2A priority patent/EP3197178A1/fr
Publication of EP2396973A1 publication Critical patent/EP2396973A1/fr
Application granted granted Critical
Publication of EP2396973B1 publication Critical patent/EP2396973B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04R1/22—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
    • H04R1/32—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
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure

Definitions

  • the present invention relates to sound reproduction systems, and more particularly to loudspeakers with high sound reproduction bandwidth.
  • Beer et al . The air spring effect of flat panel Speakers, presented at the 124th AES Convention, May 2008, Amsterdam / The Netherlands, and Wagner, Roland: Electrostatic Loudspeaker - Design and Construction, Audio Amateurs Press, Peterborough, New Hampshire, 1993.
  • the caseless flat speaker is usually a dipole radiator, which has a low sound pressure level in the low frequency range due to the acoustic short circuit.
  • a speaker cabinet is used in conventional speakers.
  • flat housings are typically used, which typically include a smaller volume of air.
  • the basic resonance frequency of the sound transducer shifts upward due to an excessively small volume of air.
  • the lower limit frequency also increases, resulting in decreased low-frequency reproduction.
  • US 2005/0201583 A1 discloses a low frequency surface array based on a dipole principle.
  • the system includes an open frame retention system wherein multiple subwoofers are housed in a dipole surface array configuration in the open frame system to provide controlled sound dispersion in both the horizontal and vertical planes.
  • the subwoofers are operable to provide low frequency sound dispersion below about 300 Hz.
  • DE 695 07 896 T2 discloses a directional sensitivity loudspeaker device comprising a first set of at least three loudspeakers arranged along a first straight line according to a predetermined pattern, the loudspeaker to speaker distances being variable, and loudspeakers also can be arranged in contact with each other.
  • US Pat. No. 2,602,860 discloses a loudspeaker structure in which nine conical loudspeakers are arranged symmetrically in three rows of three each in a single frame. The frame includes segments tilted with each other to increase the angle of emission. So the distance between the edges of the speakers should be smaller than the radius of the speakers, all speakers are operated from a same source. Furthermore, no restriction with respect to the movement of air through a housing should be achieved, since this would impair the behavior at low frequencies.
  • U.S. Patent No. 4,399,328 discloses a directional and frequency independent column of electroacoustic transducers that are driven at different amplitudes to give particular ratios of driving the electroacoustic transducers.
  • U.S. Patent No. 6,801,631 Bl discloses a loudspeaker system having a plurality of transducers positioned in a plane to achieve an optimal acoustic sound emission pattern.
  • Four midrange converters (woofers) work together to reproduce the low and mid frequencies, with the woofers positioned so that no two woofers share a common vertical axis or common horizontal axis.
  • a fifth transducer namely a high-frequency tweeter is provided, which is arranged in the middle of the woofer.
  • the object of the present invention is to provide an improved loudspeaker. This object is achieved by a loudspeaker according to claim 1.
  • the present invention is based on the finding that a low-cost, flat and yet high-quality loudspeaker can be achieved by arranging a surface array of single caseless speakers, which all have a flat shape, in a flat housing, this loudspeaker a high reproduction bandwidth or a sufficient sound pressure in a desired narrow, z. B. deep, frequency range.
  • This speaker is advantageous in that the space requirement is very low due to the use of the flat and typically small diameter single speakers.
  • the housing volume required per single loudspeaker is relatively small due to the fact that the caseless single loudspeakers are small and flat, so that the housing volume of the flat housing is so small that the entire loudspeaker has a compact design.
  • an element which has a low outdoor resonance is preferred as a single loudspeaker.
  • the equivalent volume of air is small.
  • the stiffness of the membrane suspension of the single loudspeaker is equated here with the stiffness of an equivalent air volume.
  • single speakers with a resonant frequency less than 150 Hz and in particular even less than 120 Hz or even less than 100 Hz are preferred.
  • Another advantage of the present invention is that it allows the use of flat caseless single loudspeakers, providing the required housing volume with an almost arbitrary form factor, ie with a flat housing.
  • the use of housing-less single speakers with a flat form factor also has the advantage that these single speakers are available at very low cost in large quantities. By Order of these caseless single speakers in a surface array, a coupling of the loudspeakers at low frequencies is exploited to produce a sufficient sound pressure even at low frequencies, such as at 100 Hz.
  • Another advantage is that a variable control of the many housing-less individual speakers, and thus of subareas of the area array can be done. It should be possible to achieve as far as possible a location-independent full-range sound in the space in front of the loudspeaker, despite the fact that the loudspeaker is more of a single-speaker array of large dimensions.
  • the loudspeaker preferably comprises only identical individual loudspeakers, which can be, for example, headphone casings or, generally speaking, miniature sound transducers. This means that the production of the speaker is possible at a low price.
  • the individual loudspeakers are grouped into a plurality of arrays, wherein the area array is provided with the individual individual loudspeakers for low-frequency reproduction and an array of one or more identical individual loudspeakers is provided for a high-frequency reproduction, if a 2-way loudspeaker is provided. System is used.
  • the second array comprises a plurality of center tweeters and the tweeter area is preferably covered by a single or only a few individual loudspeakers.
  • loudspeakers are obtained which despite a flat loudspeaker enclosure of less than 5 cm and in particular less than 3 cm depth with identical individual loudspeakers can reproduce the frequency range from 100 Hz to 20 kHz with a sensitivity of at least 90 dB / lW /. lm allow.
  • a preferred embodiment comprises 25 miniature sound transducers which form an approximately 21 ⁇ 21 cm area array comprising two sub-arrays for woofer reproduction and a line array for high-frequency reproduction present between these two subarrays.
  • FIG. 1 a is a front view of a loudspeaker according to a first embodiment of the present invention
  • FIG. 1b is a rear view of the loudspeaker according to a first embodiment of the invention.
  • Fig. Ic shows an interconnection of the housing-less individual loudspeakers according to an embodiment
  • Fig. Id shows a frequency distribution of the array elements of Fig. Ia for a 3-way control
  • FIG. 2a is a front view of a loudspeaker according to a second embodiment of the present invention
  • Fig. 2b is an illustration of the housing of the loudspeaker of Fig. 2a;
  • Fig. 2c is a rear view of the loudspeaker of Fig. 2a without a rear housing wall;
  • FIG. 2d shows an assignment of the housing-less individual loudspeakers for a 2-way control
  • FIG. 2e shows an alternative implementation of the loudspeaker of FIG. 2a with attached chamfers
  • FIG. 3 shows an interconnection of the housing-less individual loudspeakers with additional driver electronics for the loudspeaker occupancy shown in FIG. 2d;
  • FIGS. 4a is a schematic representation of the flat housing of the loudspeaker of FIGS. 2a, 2b and
  • Fig. 4b is an alternative schematic representation of the housing of the loudspeaker of Fig. 2a, Fig. 2b and Fig. 2c;
  • FIG. 5a shows a transfer function of a crossover network for a 2-way drive
  • Fig. 5b shows the frequency responses of the high and low tone paths for the loudspeaker shown in Fig. 2a; 5c shows a frequency response of the 2-way loudspeaker according to FIGS. 2a-2d without equalization;
  • FIG. 5d shows an equalized frequency response of the loudspeaker of FIG. 2a with a drive according to FIG. 3;
  • Fig. ⁇ a is a front view and a rear view of a preferred caseless single speaker in the form of a headphone capsule;
  • FIG. 6b shows technical data of the housing-less individual loudspeaker of FIG. 6a
  • 7a is a schematic representation of a berei- Ches for flat speakers with tilted high or midrange drivers.
  • 7b is a schematic representation of a loudspeaker with a recessed mid or high-tone ray with a horn or wave guide for making the directional characteristic of the middle or high-tonal array uniform.
  • Fig. Ia shows a front view of a loudspeaker according to an embodiment of the present invention.
  • the loudspeaker in FIG. 1 a comprises an area array 10 of single caseless loudspeakers IIa, IIb, 11c,..., Each unpacked single loudspeaker having a flat shape, as already described with reference to the rear view in FIG. 1b by means of the caseless single loudspeaker Hd can be seen.
  • the front view in Fig. Ia per single loudspeaker shows the front area, that is a plan view of the diaphragm of the loudspeaker, while the rear view illustrates that the entire individual loudspeaker is so flat that it is in the housing shown in FIG corresponding housing bore, is received and hardly protrudes over the hole.
  • the single speaker almost completely included in the total thickness of the material of the speaker front wall, such that the speaker only a small piece over the housing front wall protrudes and the back of the housing front wall also protrudes only a small piece, wherein the board from the housing front wall in one embodiment is only 4.5mm and the loudspeaker protrudes only about 1.5mm on the rear side of the housing front wall and thus an extremely is a flat single speaker.
  • Fig. Ic shows a control of the individual housing-less individual loudspeakers in Fig. Ia in the case of a 1-way implementation.
  • at least two groups of at least two loudspeakers are formed from the housing-less individual loudspeakers of the area array, with five groups 12a-12e being formed in the exemplary embodiment shown in FIG. 1c, each group having five individual loudspeakers, so that the entire loudspeaker has a total of 25 individual casebound speakers having.
  • loudspeakers whose number of individual loudspeakers varies between 9 and 49, the exact number of individual loudspeakers depending on how the individual ratios of the individual loudspeakers vary. Speakers are, and what sound pressure level, especially in the lower frequency range for which the speaker is provided, is required.
  • the membrane diameter of a single speaker is 36 mm.
  • the membrane diameter is smaller than 5 cm and preferably even less than 4cm, since in the surface array array according to the invention, the behavior in the high frequency range is better, the smaller the membrane diameter of a single speaker.
  • Smaller diaphragm areas, which are achieved by using smaller single speakers, and the use of ⁇ caseless single speakers allow a denser arrangement of the individual speakers, thereby reducing the overall size of the array. This leads to a reduced directivity.
  • partial vibrations which can lead to pronounced spatial variations in the sound pressure level in the room, are shifted towards less critical higher frequencies. Although the partial vibrations also occur there, they are no longer disturbing due to the fact that they are not at low frequencies.
  • the associated drop in the sound pressure level at low frequencies is compensated for by a coupled arrangement of several individual speakers in the array, but it is essential that the individual speakers for woofer reproduction be arranged in an area array and not in a line array.
  • An area array requires at least two adjacent rows, where one row must have at least two speakers and the other row must have at least one speaker.
  • a triangular arrangement of the loudspeakers IIa, IIb, IIc in FIG. 1a is already a surface array, wherein surface arrays in the form of a rectangle, a square or a circle or an ellipse are preferred.
  • a square array is most preferred because the square shape Coming closest to the circular shape and the somewhat rectangular arrangement of the individual individual speakers, which leads to a total square for the area array, it makes it possible to arrange the individual speakers as close as possible to each other.
  • the individual loudspeakers are arranged so close to each other that they touch each other, or that there is a direct distance between the individual loudspeakers which are adjacent to one another which is smaller than 5 mm and in particular smaller than 3 mm.
  • the serial / parallel circuit shown in FIG. 1c allows the entire loudspeaker array to still have a significant ohmic resistance compared to the situation in which all the loudspeakers are connected in parallel, so that the flowing current is the load capacity of the loudspeaker Voice coils of the sound transducer does not exceed. Compared to a complete series connection of all the individual speakers, however, it is achieved by the series-parallel connection that not all the loudspeakers connected in series influence each other electrically.
  • the serial / parallel circuit according to FIG. 1c thus represents a good compromise between the FIG Complexity of the wiring of the individual loudspeakers and the specifications for maximum current specified by the individual loudspeakers.
  • Fig. Id shows an alternative implementation of the embodiment shown in Fig. Ia, in which the individual loudspeakers are arranged similarly as in Fig. Ia, but which are controlled as a 3-way system.
  • the area array of housing-less individual loudspeakers is formed in a first array half 13a made of woofer loudspeakers and a second array half 13b made of woofer loudspeakers.
  • These two array halves or subarrays are separated by another array of midtone speakers 13c and yet another array consisting of only a single tweeter speaker 13d.
  • the two individual loudspeakers designated by "x" are short-circuited, that is to say they are deactivated. fourth, to the effect that these two individual speakers do not contribute to the sound output and swinging can be prevented as a passive membrane.
  • the number of woofer-single speakers is much larger than the number of mid-range speakers or the high-frequency speakers. This split in favor of low-frequency reproduction is made to provide sufficient low-frequency sound pressure by coupling the individual woofers for the low-frequency range achieved by placing the woof-to-bass loudspeakers as close together as possible in an area array becomes.
  • the reproduction of the frequency range from 100 Hz (-6dB) to 2OkHz (-6dB) with a sensitivity of 101 dB / IW / h despite a flat loudspeaker housing of only 2.4 cm internal depth and the associated high spring stiffness of the trapped air volume Im possible.
  • a 21 cm x 21 cm array of 25 miniature sound transducers is formed and installed in a housing of size (LxWxH).
  • the control of the individual drivers is adapted to the target of a linear frequency response that is as linear as possible and uniform directivity in the main listening direction.
  • the array is designed as a three-way system.
  • the array approach is therefore chosen to achieve the most uniform distribution of the driving force on the membrane and to move by means of many small membrane surfaces, the occurrence of partial vibrations to higher frequencies.
  • the significantly lower weight of the single membrane is also of great advantage for the reproduction of high frequencies.
  • the array approach provides the ability to vary the speaker spacing between adjacent playback channels design by the grouping of converters to a playback channel is possible.
  • a boundary condition in wave field synthesis is the "spatial sampling frequency", which requires that for the aliasing-free reproduction of a tone of 1 kHz every 17 cm a loudspeaker element is present, which is controlled by its own signal.
  • the distance should be 1.7 cm, but at 100 Hz at 1.7 m.
  • a distance of 1.7 m can be easily fulfilled.
  • a distance of 1.7 cm, however, is difficult or only approaching.
  • the flat loudspeaker according to the invention makes it possible to supply larger groups of individual loudspeakers with a low-pass filtered signal which have a greater width.
  • individual loudspeakers in the deep area are required anyway in a surface array in order to provide sufficient sound pressure.
  • adjacent groups or individual adjacent speakers are supplied with different loudspeaker signals to produce a small channel spacing for the higher frequencies which is on the order of the membrane diameter.
  • the loudspeaker signal can each be a high-pass signal or a signal with high-pass and low-pass components.
  • a loudspeaker which has a linear frequency response over as large a frequency range as possible, good impulse behavior, a uniform radiation behavior that is useful for the application, and which is capable of producing a maximum sound pressure level of 101 dB or more at a 1 meter distance, with the speaker exceptionally flat.
  • the flat speaker is advantageous in that it is inconspicuous in the environment integrable and still has good transmission properties.
  • the housing construction should be such that a particularly small overall depth of 5 and preferably 3.6 cm or even more preferably 3.0 cm is not exceeded. For this purpose acoustic drivers are used, which have a very small installation depth.
  • FIG 3 a shows a front view and a rear view of a preferably used miniature loudspeaker or "miniature chassis.”
  • the miniature chassis is preferably designed as a rearwardly open headphone capsule, as shown in FIG table shown in Fig. ⁇ b.
  • the outdoor resonance frequency of such a single loudspeaker is 120 Hz.
  • a closed housing is used.
  • an open housing can be used, in particular with a bass reflex system, so a bass reflex enclosure as a Helmholtz resonator, as is known in the art.
  • a suitably rigid material is preferred in order to obtain a sufficiently stiffened housing which can work with a material thickness of less than 7 mm and in particular even with a material thickness of 3 mm or even less. It is preferred to use as the material steel sheet or profiled plastic, although wood can be used. It is preferred to minimize susceptibility to longitudinal and lateral modes of equal frequency such that the edge dimensions of the entire loudspeaker are not an integer multiple of each other or that the loudspeaker has non-parallel walls. Nevertheless, to have a desired optical impression with parallel walls, an inner housing with non-parallel walls can be placed in an outer housing with parallel walls.
  • An example of an internal dimension of the embodiment shown in Fig. Ia is 61.5 cm wide, 80 cm high and 2.4 cm deep. When using a 6 mm MDF board material outside dimensions with a width of 63.7 cm, a height of 81.2 cm and a depth of 3.6 cm.
  • the housing Against the resonating of the housing, it is preferred to introduce webs inside the housing between the front and back, and it is also preferred, on the rear wall of outside to apply profiles.
  • the area array As can be seen, for example, in FIGS. 2 a, 2 b, it is preferred for the area array to be central in relation to the width and parallel to the edges, but eccentric in relation to the height.
  • the individual loudspeakers are housed in particular in individual holes and partially embedded in the housing material.
  • the individual loudspeakers can eg be glued in with hot glue or another sealing material and in particular acoustically sealed.
  • An advantage of the array arrangement is the possibility to control individual elements and thus individual subareas of the array differently.
  • a multipath drive In order to be able to determine the active elements of the array in a frequency-dependent manner, it is preferable to use a multipath drive.
  • the area array as has been described with reference to Fig. Id, divided into two sub-arrays 13a, 13b for the bass reproduction.
  • a 2-way arrangement would consist of all the loudspeakers being deactivated or not being present in the middle column, with the single center loudspeaker then acting as the only tweeter ,
  • the 3-way system shown in Fig. Id is used.
  • the mid-tone branch is delayed by 0.5 ms and the high-frequency branch by 0.52 ms in relation to the low-frequency array.
  • a high-frequency 2-way drive in the form of a Bessel-weighted linear array, as shown schematically in FIG. 2d.
  • a bundling and sidelobe formation is better suppressed.
  • This effect is further enhanced when, as shown in Fig. 2d, the single tweeters in the middle and divide the area array of woofers into two sub-arrays 13a, 13b.
  • FIG. 1d shows only one further high-frequency array 13e exists in FIG. 2, the individual high-frequency loudspeakers being driven with the weightings schematically indicated in FIG. 2d.
  • weighting factors 0.5, 1, -1 have been obtained only on the basis of a circuit-technically simple realization of the Bessel weights, but that, mathematically, at 0.11, 0.44, 0.76, -0, 44 and 0.11, and can be realized only with great effort.
  • the drive shown in FIG. 2d takes place in such a way that the three individual loudspeakers in the center of the array 13e are driven at full amplitude, but the lower of these three inverted-phase single loudspeakers is driven, while the uppermost single loudspeaker and the lowest individual loudspeaker of the array 13e be driven at half amplitude.
  • These level and phase ratios can be implemented with very simple means, contrary to the factors calculated by Bessel. By paralleling the three middle individual speakers with a series connection of the speakers at the top and bottom of the array 13e, these amplitude ratios can be produced.
  • the phase is achieved in the single loudspeaker, which has a weighting factor "-1" in Fig. 2d, simply by reversing the polarity of the terminal, as shown at 15 in Fig. 3.
  • the four columns of the low-frequency array are grouped into four groups of five individual loudspeakers, the groups being connected in parallel with one another. This results in a nominal impedance of 10 ohms for the tweeter array and a nominal impedance of 56 ohms for the woofer array. It could also all low-pitched single speakers are connected in parallel, but then a higher current would flow through the voice coil. However, this could overload and destroy the voice coil wire of the individual speakers.
  • a diplexer 16 having a cut-off frequency of 710 Hz is preferred.
  • the crossover should have a smaller cutoff frequency, and for a smaller array area, the crossover should have a larger cutoff frequency.
  • they are preferably amplified by a respective amplifier 19a or 19b.
  • a closed system is likewise used.
  • the package is based on a calculation using the so-called Thiele-Small parameters of the caseless single speakers, where the overall Qtc of the package and array combination is said to be 0.707.
  • This tuning is also referred to as Butterworth tuning and is extremely spectacular in one, with ideal free-air frequency response, maximum smooth frequency response and minimally achievable resonance frequency.
  • FIG. 2 a shows a perspective view of the loudspeaker according to the second exemplary embodiment with a housing front wall 1 a and a housing side wall 1 b, wherein the loudspeaker is arranged in a low-reflection room.
  • the housing front wall comprises a height and a width, wherein the height is greater than the width, and wherein it is preferred to center the array with respect to the width and insert edge-parallel, and not center the array with respect to the height, but to accommodate decentralized, as in Fig. 2b is shown.
  • Fig. 2c shows a rear view of the open loudspeaker, with webs 19a, 19b in the vertical direction and webs 19c in the horizontal direction.
  • These webs which are preferably formed completely from the front of the housing to the rear of the housing, allow encapsulation of differently driven single speakers. Pressure changes inside the loudspeaker caused by vibrations of individual diaphragms would otherwise have an effect on all individual loudspeakers working on the same volume.
  • the individual loudspeakers of the middle array column each work on an individually delimited volume, which is achieved by the webs 19a, 19b, 19c. Since these individual loudspeakers are used for the high-frequency branch, that is, they should work far above their resonant frequency, a complex dimensioning of the resulting volume is not necessary.
  • the volume connected to each tweeter single speaker is 0.0361 1. The dimensions of the volumes are determined by the dimensions of the single loudspeaker.
  • the struts 19a, 19b achieve additional stiffening of the housing and cause the volume for the woofer array to be divided into two chambers, as can be seen in FIG. 2c or also in FIG. 4a or FIG. 4b.
  • Dividing the total volume into two chambers for the sub-arrays of woofer loudspeakers leads to an efficient stiffening of the housing and to the fact that bending vibrations of the housing front and / or the housing rear wall and modes in the housing are suppressed to corresponding negative influences on the behavior of the speaker.
  • Further stiffening elements, as shown at 21 in Fig. 4b or 22 in Fig. 4a are inserted to improve the rigidity of the wood material used, which is relatively low.
  • the height and width of the housing are not even multiples to the Training of simultaneous longitudinal and transverse modes not to favor.
  • the internal depth is in the embodiment shown in Fig. 2a and 2b again 2.4 cm.
  • the outer dimensions of the embodiment shown in Fig. 2a are 35.2 cm in width, 46.2 cm in height and 3.6 cm in depth. These external dimensions are also indicated in the schematic drawing in Fig. 4a together with other preferred dimensions of this embodiment.
  • the eccentric placement of the array on the front of the speaker is preferred.
  • the sound pressure of sound waves propagating from a sound source through a loudspeaker front changes as they hit an edge, because the energy of the wave splits to a changed volume.
  • a sound wave bends around the housing.
  • the volume into which the sound wave propagates and the surface of the wavefront become larger.
  • the sound pressure on this surface decreases.
  • Due to the change in pressure a second sound source with opposite phase arises at this edge.
  • the sound emitted by this secondary sound source is superimposed with the sound radiated from the primary sound source.
  • the frequency response of the loudspeaker alternately leads to constructive and destructive interference. If the path difference equivalent to the transit time difference corresponds to integer multiples of a wavelength, then minima occur at the corresponding frequencies, with integer multiples of half the wavelength, overshoots occur. If the array were to be placed centrally on the baffle, observation points near the 0 ° axis would experience superimposition of the interference phenomena due to equal run times with respect to right and left or upper and lower baffle edges. The consequence of this is a location-dependent frequency response, which in some cases is characterized by severe break-ins and overshoots.
  • the position of the Arrays on the front panel selected so that the distance from the central single speaker to the top, bottom and the side edges of the housing are as different as possible and not integer multiples of each other. This prevents the unfavorable coincidence of interference effects.
  • the division of the housing into two equal-sized chambers by stiffening webs requires that the array is centered horizontally.
  • the distance from the center of the array to the side edges is 17.6 cm.
  • the distance from the center of the array to the upper edge of the housing is set to 14.1 cm.
  • the distance to the lower edge of the housing is thus 23.1 cm.
  • the 6 mm thick strips in the embodiment, with which the Hochtontreiber be separated do not hinder the air compression at the rear open membranes, not all individual speakers of the array are arranged without a gap. Instead, a distance of 6 mm is made between the individual loudspeakers of the middle column of the array and the individual loudspeakers of the columns adjacent to the left and right, as can be seen from FIG. 4a.
  • Thickness of 3 cm and a mass of 280 g / m 2 can be used. Housing modes should be deprived of energy by absorption in the insulating material, so that they can not develop fully or not at all. This principle works only at high speed sound. Since at the edges of housings in standing waves are always maxima and fast-minima, therefore, no insulating material is introduced at the edges of the housing over a width of about 7 cm, as can be seen schematically in Fig. 2c.
  • FIGS. 5a-5d various measurements will be made on that illustrated in FIGS. 2a to 2d Speaker according to a preferred embodiment explained.
  • the separation of the audio signals into a high-tone branch and a low-frequency branch through the crossover 16 is performed by means of fourth-order Linkwitz-Riley filters for the crossover.
  • the transfer function of the crossover is shown in Fig. 5b.
  • the level of the high-frequency branch is raised by 3 dB compared to the low-frequency signal.
  • the loudspeaker is preceded by an 80 Hz high pass, which is not shown in FIG.
  • Fig. 5b shows the frequency responses of high and low tone path on the 0 ° axis. The acoustic summation of both paths results in the non-equalized frequency response shown in FIG. 5c.
  • An equalized frequency response is shown in Fig. 5d, in which a much better linearity is apparent, and in which a much improved behavior in the lower frequency range and a lowered lower limit frequency has also been obtained.
  • the treble path it is preferable to delay the treble path by 0.17 ms. Is linearized to 20 kHz, the frequency response at the metrological characterized in Fig. 5d Au s exchangesbeispiel 'in the region of 100 Hz, so that is possible to achieve a ripple of +/- 2 dB.
  • the cut-off frequency at -6 dB is 100 Hz.
  • the sound pressure level has also fallen by 6 dB.
  • the average electrical sensitivity of the speaker is 101 dB / lW / lm. This value is high compared to conventional hi-fi speakers and is due to the high sensitivity of the caseless single speakers.
  • 2e shows an alternative implementation of the flat housing with chamfers attached, to come closer to a housing front similar to a truncated pyramid for attenuating interference effects due to diffraction phenomena at the edges of the housing. This allows a better linear frequency response can be achieved.
  • the flat housing can be designed as a bass reflex housing which is not completely closed, but instead one or more openings in the housing Baffle has, which can also be extended as channels in the case inside.
  • the casing of a bass reflex system is a Helmholtz resonator when the transducer is plugged in. Within the bass reflex channel is an air mass, which oscillates at resonance at maximum amplitude. The resonator is tuned to a resonant frequency below the resonant frequency of the transducer and then contributes significantly to the sound radiation of the loudspeaker at low frequencies.
  • a properly tuned bass reflex design has an impedance curve with two adjacent maxima.
  • the maximum sound pressure is radiated by the bass reflex tube at the minimum f b between the two impedance maxima.
  • the sound pressure emitted by the bass reflex channel decreases in the direction of higher and lower frequencies.
  • the goal of tuning a bass reflex system is the constructive superimposition of sound components emitted by the sound transducer and bass reflex port.
  • a bass reflex opening is provided on the lower side wall of the housing, shown for example in Fig. 2b, this channel opening being designed rectangular with a width of 5 cm.
  • the length of a reflex tube for a chamber then results, for example, to 3.3 cm.
  • An optimized case has a dimension of 41.5 cm in width, 66.2 cm in height and 2.4 cm in depth, these dimensions being based on the internal dimensions.
  • the opening of the bass reflex channel can be increased in other embodiments, in particular be increased over the entire width of a chamber of 17.2 cm, for example. Accordingly, the length of the reflex tube can be increased since the length must also be increased with increasing opening area if the tuning frequency is to be maintained.
  • the reflex opening can also be arranged on the upper narrow side of the housing.
  • a closed loudspeaker with a flat arrangement of 25 miniature loudspeakers as sound transducers is preferred, whereby the number of sound transducers can also be between 9 and 49 depending on the application.
  • a square shape of the arrangement of the sound transducers is preferred, wherein the area array is divided into separate sub-arrays of the critical woofer-providing single loudspeakers preferably to work in separate volumes.
  • a symmetrical 2-way arrangement is used, wherein the individual speakers of the other arrays between the two sub-arrays, which work as a tweeter, are weighted by coefficients of Bessel functions.
  • the excitation signal of the system is equalized with a loudspeaker controller and actively separated and amplified by means of two power amplifiers. This achieves hi-fi-standard values for the maximum achievable sound pressure level as well as for the ripple of the frequency response and harmonic distortion.
  • the speaker is characterized by a continuous, not overly bundling straightening behavior without sidelobes.
  • Loudspeakers according to the present invention can be used in classical stereo or multi-channel setups, preferably with a subwoofer for the lowest frequency range.
  • the array concept leads to a high scalability of the system. So can with loudspeaker panels for Wave field synthesis of the spacing of adjacent playback channels are minimized by the small diameter of the individual speakers. Due to the possibility of discretely controlling individual caseless single loudspeakers and thus certain areas of an array, it is also possible to use time-modifiable actuators.
  • the bundling effect of the loudspeaker in the vertical plane above 10 kHz can be reduced even further by changing the array control if only a single loudspeaker is operated above 10 kHz.
  • the vertical radiation angle can be increased above 10 kHz with such a 3-way system.
  • the sound pressure increase in the frequency response of the miniature driver used in the embodiments is preferably eliminated, so that no more equalization is necessary.
  • the radiated sound pressure is increased by increasing the diaphragm stroke.
  • the radiated sound pressure ideally doubles as well.
  • the force generated by the drive of an electrodynamic transducer is determined by the product of the magnetic flux density B of the magnet, the length 1 of the coil wire, and the flowing current I in the coil.
  • the loudspeaker according to the invention is implemented as an active loudspeaker with internal signal processing on a DSP, since one (eg active) frequency divider and an equalization and a multi-channel amplification can be used and integrated into the speaker housing.
  • one (eg active) frequency divider and an equalization and a multi-channel amplification can be used and integrated into the speaker housing.
  • the loudspeaker according to the invention is distinguished by an exceptionally small housing depth, by cost-effective manufacturability and by convincing values both on the metrological side and on subjective levels.
  • FIG. 7 a shows a loudspeaker in which a further array of individual loudspeakers is preferably present in the middle of the loudspeaker.
  • one or more individual loudspeakers are tilted with respect to the individual loudspeakers of the area array, so that a surface normal to an active area of a single loudspeaker of the further array differs from a surface normal to an active area of a single loudspeaker of the area array.
  • the tilt can be, for example, 30 degrees with respect to the normal and is preferably between 10 ° and 70 °.
  • a listener may have an orientation of the speakers even if the flat speaker is mounted on the wall and can not be rotated. However, alignment is not required for the approximate omnidirectional pattern of the woofer array.
  • FIG. 7b shows a loudspeaker, in which there is another array of individual loudspeakers, which is set back in the housing, or which has a waveguide device in front of the active surface.
  • a reset and waveguide structure is used to have a flat surface of the loudspeaker.
  • the waveguide structure serves to do the inherent Directivity in the intended area and it will have a horn-like shape.

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  • 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)
  • Circuit For Audible Band Transducer (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

L'invention concerne un agencement de surface (10) constitué de haut-parleurs individuels (11a, 11b, 11c) sans boîtier, qui ont une forme plate. Les haut-parleurs individuels sans boîtier sont montés dans un boîtier (1) plat, et la profondeur du boîtier est par exemple inférieure à 5 cm. On utilise comme haut-parleurs individuels sans boîtier de préférence des capsules de casque d'écoute ou des haut-parleurs miniatures ayant un diamètre de membrane inférieur à 5 cm.
EP10702679.1A 2009-02-16 2010-02-04 Haut-parleur plat Active EP2396973B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10702679.1A EP2396973B1 (fr) 2009-02-16 2010-02-04 Haut-parleur plat
EP17158435.2A EP3197178A1 (fr) 2009-02-16 2010-02-04 Haut-parleur

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP09002148 2009-02-16
DE102009010278.7A DE102009010278B4 (de) 2009-02-16 2009-02-24 Lautsprecher
EP10702679.1A EP2396973B1 (fr) 2009-02-16 2010-02-04 Haut-parleur plat
PCT/EP2010/051382 WO2010091999A1 (fr) 2009-02-16 2010-02-04 Haut-parleur plat

Related Child Applications (2)

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EP17158435.2A Division-Into EP3197178A1 (fr) 2009-02-16 2010-02-04 Haut-parleur
EP17158435.2A Division EP3197178A1 (fr) 2009-02-16 2010-02-04 Haut-parleur

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EP2396973A1 true EP2396973A1 (fr) 2011-12-21
EP2396973B1 EP2396973B1 (fr) 2019-08-14

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EP10702679.1A Active EP2396973B1 (fr) 2009-02-16 2010-02-04 Haut-parleur plat

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US (1) US9191734B2 (fr)
EP (2) EP3197178A1 (fr)
JP (1) JP5405598B2 (fr)
CN (1) CN102396243B (fr)
DE (1) DE102009010278B4 (fr)
WO (1) WO2010091999A1 (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9788103B2 (en) 2010-09-03 2017-10-10 Cirrus Logic International Semiconductor Ltd. Speaker system which comprises speaker driver groups
CN102006534B (zh) * 2010-12-13 2013-05-22 瑞声声学科技(深圳)有限公司 扬声器阵列指向性优化方法
JP2014204362A (ja) * 2013-04-08 2014-10-27 日本放送協会 スピーカアレイ装置
CN104301830A (zh) * 2013-07-17 2015-01-21 深圳市赛诗电声有限公司 一种同轴阵列号角音箱
DE102013013377A1 (de) * 2013-08-10 2015-02-12 Advanced Acoustic Sf Gmbh Dezentraler Aufbau eines Wellenfeldsynthese Systems
WO2015119612A1 (fr) 2014-02-06 2015-08-13 Hewlett-Packard Development Company, Lp Suppression d'une fréquence modale d'un haut-parleur
KR101515618B1 (ko) * 2014-03-20 2015-04-28 김태형 래티스 타입 스피커, 및 이를 구비한 래티스 어레이 스피커 시스템
DE102014208256B4 (de) 2014-04-30 2016-03-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Array aus elektroakustischen Aktuoren und Verfahren zum Herstellen eines Arrays
DE102014220544A1 (de) 2014-10-09 2016-04-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Lautsprecherarray
DE102014114870A1 (de) * 2014-10-14 2016-04-14 Ralph Mantel Tieftonlautsprecheranordnung
JP2016100613A (ja) * 2014-11-18 2016-05-30 ソニー株式会社 信号処理装置、信号処理方法、およびプログラム
DE102015106560B4 (de) * 2015-04-28 2018-10-25 Audisense Gmbh Hörprothese
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US20170347187A1 (en) * 2016-05-24 2017-11-30 Richard Haberkern Acoustic focusing apparatus
DE102017200488A1 (de) 2016-07-13 2018-01-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kompensationsmittel für ein lautsprechersystem und lautsprechersystem
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
TW201918079A (zh) * 2017-10-17 2019-05-01 友達光電股份有限公司 音效系統
CN112335261B (zh) 2018-06-01 2023-07-18 舒尔获得控股公司 图案形成麦克风阵列
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
CN112889296A (zh) 2018-09-20 2021-06-01 舒尔获得控股公司 用于阵列麦克风的可调整的波瓣形状
US20200228898A1 (en) * 2019-01-14 2020-07-16 Google Llc Phase-shifting actuator driving signals and panel audio loudspeakers using the same
EP3942842A1 (fr) 2019-03-21 2022-01-26 Shure Acquisition Holdings, Inc. Boîtiers et caractéristiques de conception associées pour microphones matriciels de plafond
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
WO2020191380A1 (fr) 2019-03-21 2020-09-24 Shure Acquisition Holdings,Inc. Focalisation automatique, focalisation automatique à l'intérieur de régions, et focalisation automatique de lobes de microphone ayant fait l'objet d'une formation de faisceau à fonctionnalité d'inhibition
WO2020237206A1 (fr) * 2019-05-23 2020-11-26 Shure Acquisition Holdings, Inc. Réseau de haut-parleurs orientables, système et procédé associé
EP3977449A1 (fr) 2019-05-31 2022-04-06 Shure Acquisition Holdings, Inc. Automélangeur à faible latence, à détection d'activité vocale et de bruit intégrée
US11297426B2 (en) 2019-08-23 2022-04-05 Shure Acquisition Holdings, Inc. One-dimensional array microphone with improved directivity
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
WO2021243368A2 (fr) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Systèmes et procédés d'orientation et de configuration de transducteurs utilisant un système de positionnement local
US11785380B2 (en) 2021-01-28 2023-10-10 Shure Acquisition Holdings, Inc. Hybrid audio beamforming system
CN113179476B (zh) * 2021-04-12 2022-12-27 科大讯飞(苏州)科技有限公司 配置参数的获取方法、配置方法、电子设备及存储装置
TWI795824B (zh) * 2021-06-28 2023-03-11 潘宗和 可自動擴大音效之收音反射器結構裝置
CN113676817B (zh) * 2021-08-25 2023-08-25 江苏铁锚玻璃股份有限公司 基于面发声、发声元器件的位置放置方法及面发声组件
WO2023052555A2 (fr) * 2021-09-30 2023-04-06 Kaetel Systems Gmbh Système de haut-parleurs, circuit de commande pour un système de haut-parleurs comprenant un haut-parleur d'aigus et deux haut-parleurs moyens ou de graves et procédés correspondants

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602860A (en) * 1947-11-18 1952-07-08 Doubt Leon Stewart Loud-speaker structure
DE868921C (de) * 1949-06-05 1953-03-02 Siemens Ag Lautsprecherkombination mit verschieden abgestimmten Einzellautsprechern, z. B. Hochton- und Tieftonlautsprechern
NL8001119A (nl) * 1980-02-25 1981-09-16 Philips Nv Richtingsonafhankelijk luidsprekerszuil- of vlak.
JP2713080B2 (ja) * 1993-03-05 1998-02-16 松下電器産業株式会社 指向性スピーカ装置
NL9401860A (nl) * 1994-11-08 1996-06-03 Duran Bv Luidsprekersysteem met bestuurde richtinggevoeligheid.
US20020146140A1 (en) * 1998-10-14 2002-10-10 Shun-Pui Chiu Speaker assembly
US6801631B1 (en) * 1999-10-22 2004-10-05 Donald J. North Speaker system with multiple transducers positioned in a plane for optimum acoustic radiation pattern
US7515719B2 (en) * 2001-03-27 2009-04-07 Cambridge Mechatronics Limited Method and apparatus to create a sound field
GB0304126D0 (en) * 2003-02-24 2003-03-26 1 Ltd Sound beam loudspeaker system
JP4075766B2 (ja) * 2003-10-27 2008-04-16 ヤマハ株式会社 アレイスピーカ及びスピーカ装置
US7415124B2 (en) * 2004-03-15 2008-08-19 Hpv Technologies Llc Low frequency surface array
US20060159286A1 (en) * 2004-07-20 2006-07-20 Stiles Enrique M Bessel array with non-empty null positions
GB0514361D0 (en) * 2005-07-12 2005-08-17 1 Ltd Compact surround sound effects system
JP4839136B2 (ja) * 2006-06-02 2011-12-21 富士フイルム株式会社 超音波トランスデューサアレイ、超音波用探触子、超音波内視鏡、超音波診断装置
US20080085006A1 (en) * 2006-09-27 2008-04-10 Wing Cheong Leung Integrated multi-channel audio box
JP2008109281A (ja) * 2006-10-24 2008-05-08 Mitsubishi Electric Engineering Co Ltd スピーカ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010091999A1 *

Also Published As

Publication number Publication date
EP2396973B1 (fr) 2019-08-14
JP5405598B2 (ja) 2014-02-05
DE102009010278B4 (de) 2018-12-20
DE102009010278A1 (de) 2010-08-19
EP3197178A1 (fr) 2017-07-26
US20120008812A1 (en) 2012-01-12
CN102396243A (zh) 2012-03-28
US9191734B2 (en) 2015-11-17
JP2012518304A (ja) 2012-08-09
CN102396243B (zh) 2014-09-17
WO2010091999A1 (fr) 2010-08-19

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