JP2009532921A - Biplanar loudspeaker system with temporal phase audio output - Google Patents

Abstract

【Task】
The present invention utilizes three loudspeaker systems that realize realistic three-dimensional sound reproduction. This method includes a wedge-shaped housing attached to the center of a single housing housing a third speaker disposed in parallel with a single housing housing left and right speakers, and a front surface parallel to the surface. Use a single housing for the left and right speakers placed in the. The present invention comprises an electronic circuit for processing left and right audio input signals. The left and right channel signals are reduced and sent to each channel, added, delayed, and sent to the center channel speaker. The wedge-shaped housing prevents the normal overlap of the left and right channels and fills this range with a specially derived central channel signal so that the listener can perceive a broad sound image space.
[Selection figure] None

Description

  The present invention relates to generating realistic and dramatic stereo sound using spaced loudspeakers having a temporal phase center channel derived from two input channels.

  The prior art of stereo loudspeakers mainly uses two separate loudspeaker housings. The housing of one speaker is arranged on the right side of the listener's range. The other is arranged symmetrically on the left side of the listener's range. At any position in the listening range that is equidistant from the two speaker housings, the listener will recognize a reasonably accurate stereo image.

  The left channel information would appear to come from the left speaker. The information on the right channel will appear to come from the right speaker. The center channel information would appear to arise from a position between the left and right speakers. Similarly, sounds recorded to occur left and right from the center will also be recognized in exactly one direction.

  If the listener is not equidistant from the two speakers, i.e. not in the center of the two speakers, the advanced central channel positioning is lost. In this case, the left sound still originates from the left speaker system. The right sound still originates from the right speaker system. In the middle, however, channel information no longer originates from the position between the two speaker systems. Thus, there is no highly defined center position and the complete stereo image is greatly degraded.

  The cause of the loss of the center channel position information is a relative time shift caused by a difference in distance from the left and right speaker systems to the listener. Sound waves travel at a speed of 334 meters per Mach 1 or 1 second. Normally, this value is constant, but changes with temperature and pressure, and humidity slightly affects the speed. In any case, the propagation speed is the same as two sets of speakers sharing the same space. The center channel information is applied to both speakers simultaneously, but the sound waves from the nearest speaker reach the listener's ears quickly. Sound waves from the speaker system far from the listener will arrive late, i.e. delayed due to the additional distance that the sound waves need to propagate before reaching the listener's ear.

  For example, the listener is in the middle position of the listening environment called “P” in this example. Position “P” is about 167 cm (5.57 ft) from the left speaker and about 6.68 ft from the right speaker. Sound waves from the left speaker reach the listening position (P) 5 milliseconds after being generated by the speaker. The sound wave from the right speaker reaches the position “P” 6 milliseconds after being generated by the right speaker, resulting in a difference in arrival time of 1 millisecond, which is referred to as “T”. Auditory information (SIN theta) applied simultaneously to the left and right speakers is synthesized at the listening position (P) as a synthesis of both signals, from the left speaker (SIN theta), from the right speaker (SIN theta + T) It is. The net acoustic energy approached at position P is SIN theta) + (SIN theta + T).

  The acoustic energy from the two sources is constructed constructively when the phases are matched, producing a net energy that is greater than either element. The acoustic energy from the two sources is destructively synthesized if they are out of phase and cancel each other. This depends on the relative phase difference caused by the time lag (T). J. French mathematician D. J Fourier clarified an equation for calculating the relative phase of the frequency at a predetermined time lag (T). For example, when T = 1 ms, the invalid frequencies are 500 HZ, 1.5 KHZ, 2.5 KHZ, 3.5 KHZ, 4.5 KHZ, 6.5 KHZ, 7.5 KHZ, 8.5 KHZ, 9.5 KHZ, 10 Can occur at .5KHZ, 11.5KHZ, 12.5KHZ, etc. This is known as the “comb effect” of an invalid frequency regular space and is a common problem with dual-enclosure stereo systems.

  To solve this problem, humans hear with two ears about 12 centimeters apart. This means that perception takes place at two careful positions in the listening environment. Each ear has a different response transformation, which changes the frequency perceived by the listener. One way for the human ear to locate a sound is to compare the arrival times of the sound from one ear to another. If the information of the center channel of the conventional dual speaker stereo system does not reach the two ears of the listener at the same time, the listener cannot specify the direction of the information of the center channel, and the stereo image is destroyed.

  The range of the listener's environment that is equidistant from the two speaker systems is called a “sweet spot”. In the case of a normal system installed in a room, the sweet spot is large enough to accommodate one person. A common example is a listening environment involving three people sitting next to a couch. If a person in the center seat enjoys an accurate stereo image at the sweet spot, Usually, stereo cannot be perceived accurately.

  US Pat. No. 4,058,675 (November 15, 1977) “Loudspeaker System for use in a Stereophonic Sound Reproduction System” is configured to operate with a loudspeaker system and an audio input signal to reproduce stereophonic sound. Main speakers configured to radiate acoustic energy to the listener for the purpose of the sound, and are configured to operate with the input signal and are smaller than the acoustic energy generated by the main speakers, reaching the listener later And a sub-speaker configured to radiate acoustic energy having different phases.

  US Pat. No. 6,069,962 (May 30, 2000) “Point Source Speaker System” is another attempt to expand the sweet spot. This patent discloses a configuration using a mid-low range speaker of a double voice coil having two high frequency speakers mounted on the same axis inclined 45 degrees positive and negative from the central axis of the mid-low range speaker. ing. This system produces a slight separation at high frequencies. Mid-range and low-frequency acoustic energy is generated in monaural by a single cone speaker.

  US Pat. No. 6,169,812 B1 (January 2, 2001) “Point Source Speaker System” is an attempt to expand the sweet spot. The essence of this patent is to position the three speakers within a single housing so that the axes of the sound waves generated by each speaker have a common origin. This patent also teaches changing the shape of the sound wave. The axis of each speaker relative to adjacent speakers is set to 90 degrees. The left speaker is supplied with a difference signal (left minus right). The right speaker is supplied with a difference signal (right minus left). The central speaker is supplied with the total signal (right side plus left side). This configuration produces a central channel image that is very clearly arranged. However, the separation is lost at the outer limit of the sweet spot due to the 180 degree arrangement of the left and right speaker axes.

  US Pat. No. 5,557,680 (September 1996) “Loudspeaker System for Priducing Multiple Sound Images Within a Listening Area from Dual Source Locations” generates a central channel audio image derived from the two left and right channels The two cabinets are arranged at an angle with the listener on each side. Two cabinets contain speakers for the left / right channels along the speakers for the derived center channel. This patent attempts to eliminate the time phase problem by replacing the center channel speaker in the same housing with left and right channel speakers, but the axes of these speakers are different.

  US Pat. No. 5,426,702 (June 1995) “System for Deriving a Center Channel Signal from an Adapted Weighted Combination of the Left and Right Channels in a Stereophonic Audio Signal” It teaches a calculation method using weighting to derive an audio image. However, the patent does not teach how to replace the speakers to improve the sweet spot by this method.

  US Pat. No. 5,610,986 (March 1997) “Linear-Matrix Audio-Imaging System and Image Analyzer” teaches a method for deriving a central channel audio image from left and right channel inputs. In this teaching, in order to synchronize the central channel with the left and right images, the temporal phase due to the placement of the speakers is not considered, nor is the temporal phase required by the central channel taken into account.

  The present invention comprises a single rectangular speaker housing 10 comprising a left channel speaker 16 and a right channel speaker 18 arranged on the same plane. These speakers are mounted as close as possible. A speaker for the center channel 20 is mounted in a wedge 12 on a plane in front of and parallel to two coplanar speakers. A wedge 12 extending from the front of the rectangular speaker housing 10 and containing the central channel speaker 20 separates the left channel speaker 16 and the right channel speaker 18 and provides a portion of their acoustic energy. To reflect.

  The time delay crossover network 82 divides the left channel audio output signal 40, the left channel audio output signal 70, and the center channel audio output signal 55 according to frequency, so that a mid-band and / or low-band subwoofer As with the speaker 25, the high-frequency left channel tweeter 15, the right channel tweeter 17, and the central channel tweeter 19 are supplied and the central channel output 55 is delayed to the rear of the speaker housings 10 and 12. Generate a wide range of waveforms that give the listener the illusion of a wide range of existing sound stages.

  The reason why the signal used in the center channel power amplifier 50 is delayed is that the center speaker is between the plane including the center channel speaker 20 and the plane including the left channel speaker 16 and the right channel speaker 18. This is because it is located near the listener (sitting in front of the central speaker) by a distance of. If there is no time delay in the center channel speaker 20, the listener will perceive the sound from the center channel speaker 20 well before the sound arrives from either the right channel speaker 18 or the left channel speaker 16. Will do. This time delay is described in J. Org. D. A corresponding relative phase displacement that can be calculated using the J Fourier equation is generated.

  The additional acoustic energy generated at the center channel speaker 20, i.e., (1/2 {L + R}), unbalances the total sum and difference energy, such as perceived energy. The acoustic energy of the system is L + R + (1/2 {L + R}). To correct this imbalance, the signal on the right channel acoustic input 60 and the signal on the left channel acoustic input 30 are processed as shown in detail in FIG.

  Here, the acoustic energy of the entire system is (R- {1 / 2L}) + (L- {1 / 2R}) + ({1 / 2L} + {1 / 2R}) = L + R. Return the acoustic energy to balance. The spatial energy distribution produced by the embodiment of the present invention is shown in the above-mentioned figure.

  In particular, FIG. 4 shows the location where electrical energy is supplied to three main speakers. The generated acoustic energy transmitted to the listening range by the loudspeaker is shown in FIG. A measurement of the acoustic level is made from the left end 42 (FIG. 2) of the left channel energy region to the right end 72 of the right channel energy region, and it will be readily apparent that the left side acoustic energy is greatest at the left end. . The right side acoustic energy is greatest at the rightmost end of the right channel energy range 72. At the leftmost end of the left channel energy range 42, the right acoustic energy is 0 [(center channel speaker 20 to 1 / 2R) + (left channel speaker 16 to -1 / 2R) = 0].

  In the middle of the central channel energy range 52, the right acoustic energy is (1 / 4R) and the left acoustic energy is (1 / 4L). This is the position of the listening environment when the left and right energy are equal. In all positions on the right side from the center, the right side energy is greater than the left side energy. At all positions on the left side from the center, the left side energy is greater than the right side energy. Referring to FIG. 2, it is apparent that at any position of the shadow, it has a certain percentage of left and right energy.

  For example, the listener's left ear is located at a shadow position P (left), and the right ear is located at a shadow second position P (right). The position P (right) is 12 cm closer to the right end of the acoustic range than the position P (left). P (left) is 12 cm closer to the left end of the acoustic range than P (right). From this information we can derive:

  The left side acoustic energy perceived by the ear at P (left) is greater than the left side acoustic energy perceived by the right ear at P (right). Similarly, the right side acoustic energy perceived by the right ear at P (right) is greater than the right side energy perceived by the left ear at P (left). The right ear hears more energy on the right and the left ear hears more energy on the left. Thus, the right energy is perceived to occur at the illusion position R (Q) for the right housing, and the left energy appears to arrive from the illusion position L (Q) for the left housing. This set of conditions applies to a set of all two positions at any position in the wedge-shaped propagated energy range. A stereo image is perceived only if the two locations are not equidistant from the two ends of the propagated energy range.

  There is a special case where stereo is not perceived. If the listener's line of sight is perpendicular to the direction of the rectangular speaker housing 10, both ears (P {left} and P {right}) are at an equal distance from both ends of the acoustic energy range. Therefore, the difference in the level of the left or right signal is not recognized. This listener does not recognize stereo.

Drawing 1
The rectangular speaker housing 10 is a hollow block. The inner partition 11 separates the interior of the block into a left cavity 28 and a right cavity 26 and provides a separate chamber for projection behind the left channel speaker 26 and right channel speaker 18. The hollow wedge 12 is located between the two speakers so that its apex contacts the rectangular speaker housing 10 at a wedge-shaped mounting position 14 equidistant from the left channel speaker 16 and the right channel speaker 18. It is attached. A third speaker, the center speaker 20 is attached to the bottom surface of the wedge shape 12. The wedge shape 12 is arranged so that the wedge-shaped face surface 24 is parallel to the face surface 28 of the housing. The bottom surface of the wedge shape 12 is parallel to the bottom surface of the casing 10 of the rectangular speaker. The upper surface of the wedge shape 12 is parallel to the upper surface of the casing 10 of the rectangular speaker. The distance between the housing plane 28 and the wedge-shaped plane 24 is the same as the height of the wedge-shaped triangle 12. The wedge-shaped left-side suppression surface 22 facing the left channel speaker 16 and the wedge-shaped right-side suppression surface 23 facing the right channel speaker 18 minimize, or “inhibit,” reflection of high-frequency sound waves. Made of (or coated with) material. This reduces high frequency “spatter”.

  FIG. 2 shows a left channel energy range 42, a center channel energy range 52, and a right channel energy range 72 generated by three speakers. The left channel speaker 16 attached to the rectangular speaker housing 10 generates an energy range 42 for the left channel. The right channel speaker 18 attached to the rectangular speaker housing 10 generates the right channel energy range. The subwoofer 25 is attached to the bottom of the rectangular speaker casing 10. A central channel speaker 20 attached to the wedge 12 produces a central channel energy range 52. The right channel energy range 72 generated by the right channel speaker 18 is not mixed with the left channel energy range 42 and is deflected by the interference of the wedge shaped right restraint surface 22 and the wedge shaped left side surface 23. Is done. The maximum propagation angle of the right channel speaker 18 is shifted to the right side of the wedge shape 12 due to the interference of the wedge-shaped right suppression surface 23. Similarly, the maximum propagation angle of the left channel speaker 16 shifts to the left side of the wedge shape 12 due to the interference of the wedge-shaped left suppression surface 22. This deflection of the acoustic energy of the left channel speaker 16 and the right channel speaker 18 produces a low energy range directly in front of the housing. This range corresponds to the main propagation axis of the central channel speaker 20 and the energy range 52 of the central channel that is generated.

  FIG. 3 is a block diagram of a circuit 5 for a housing of a speaker that supplies electrical energy to three main channel speakers, a left channel 16, a right channel 18, and a central channel 20. Further, high-frequency outputs for the left channel 41, the right channel 71, and the center channel 56 are output to the left channel tweeter 15, the right channel tweeter 17, and the center channel tweeter 19, respectively. The right channel audio input 60 is supplied by the right channel conductor 64 directly to the input of the right channel power amplifier 62. Similarly, the left channel audio input 30 is supplied by the left channel conductor 34 directly to the input of the left channel power amplifier 32. The audio input 30 of the left channel and the audio input 60 of the right channel are added at the addition contact 80, and the output thereof is half of Left (left) + Right (right). This signal (1/2 {L + R}) is provided to the input of the time delay network 82 by the summing conductor 58 of the central channel. The output of the time delay network 82 is delayed by a time delay factor T (1/2 {L + R}). This delayed signal is applied by the central channel timing delay conductor 59 to the positive (non-inverted) input of the central channel power amplifier 50. The right channel audio input 60 is applied to the right channel attenuator 66 comprised of resistors R3 and R4. The output of the right channel attenuator 66 is 1 / 2R and is applied by the right channel conductor 68 to the input of the power amplifier 32 of the “−” (inverted) left channel. As a result, the output of the power amplifier 32 of the left channel changes from L to L- (1 / 2R). Similarly, the left channel audio input 30 is applied to a left channel attenuator 36 comprised of resistors R3 and R4. The output of the left channel attenuator 36 is ½ L and is applied by the left channel conductor 38 to the “−” (inverted) input of the right channel power amplifier 62. As a result, the output of the power amplifier 62 of the right channel changes from R to R- (1 / 2L).

  4 is a plan view of a rectangular speaker housing 10, which includes a left cavity 28 that houses a left channel speaker 16, a right channel speaker 18, and a block diagram (shown in detail in FIG. 3). The right side cavity 26 for housing the housing circuit 5 and the wedge shape 12 for housing the central channel speaker 20 attached to the speaker housing 10 at the wedge-shaped insertion position 14 are provided. The electrical inputs and outputs to the housing circuit 5 are shown, which are the left channel input 30, right channel input 60, left channel audio output 40, right channel audio output 70 and center channel audio output. 55.

  FIG. 5 is a front view of a rectangular speaker housing 10, which includes a left cavity 28 that houses a left channel speaker 16 and a left channel tweeter speaker 15, a right channel speaker 18 and a right channel. A right-hand cavity 26 that houses the tweeter speaker 17 and a wedge-shaped face surface 24 that shows a wedge-shaped face surface 24 and a central channel speaker 20 and a central channel tweeter speaker 19 are provided. Each tweeter speaker 15, 17, and 19 is connected to the left channel speaker 16, the right channel speaker 18, and the central channel speaker 20 by two orthogonal support members 7 on the surfaces of the housings 28, 26, and 24 of each speaker. Supported in the center of A subwoofer speaker 25 is shown on the side and protrudes from the bottom surface of the rectangular speaker housing 10.

  FIG. 6 is a perspective view of a rectangular speaker housing 10, which includes a left cavity 28 that houses a left channel speaker 16 and a left channel tweeter speaker 15, a right channel speaker 18 and a right channel speaker 18. A right-hand cavity 26 that houses a channel tweeter speaker 17 (not shown) and a wedge-shaped face surface 24 are shown, and a central channel speaker 20 and a central channel tweeter speaker 19 are housed, and a wedge-shaped insertion position is shown. 14 and a wedge 12 attached to the speaker housing 10. The wedge-shaped left restraining surface 22 faces the left channel speaker 16. A subwoofer speaker 25 is shown on the side and protrudes from the bottom of the rectangular speaker housing 10.

  FIG. 7 shows the prior art of a two-chassis stereo system with a left channel energy range 42, a right channel energy range 72, and a perceived sound image space 83 experienced by the listener.

  FIG. 8 shows a single housing of a bi-planar without an associated time delay network 82. This figure shows the perceived image space 83 experienced by the listener. Shown is a rectangular speaker housing 10 comprising a left channel speaker 16, a right channel speaker 18, and a central channel speaker 20 housed in a wedge 12.

  FIG. 9 shows a conventional point source system having a perceived image space 83 experienced by a listener. This single speaker enclosure and combined energy range is provided by conventional techniques.

  FIG. 10 shows a single housing of a biplanar with an associated time delay network 82. This figure shows the perceived image space 83 experienced by the listener. Shown is a rectangular speaker housing 10 comprising a left channel speaker 16, a right channel speaker 18, and a central channel speaker 20 housed in a wedge 12. This figure also shows the combined energy range 84 emitted from the right, left and center channel speakers of the associated time delay network 82 (not shown).

FIG. 1 shows a single rectangular shape consisting of three speakers implementing the present invention comprising left and right speakers and a central speaker housed in a central wedge shape that deflects the sound from both the left and right speakers. It is a perspective view of a housing | casing. FIG. 2 is a plan view of a single rectangular housing having two cavities for the left and right speakers in addition to the speaker in the central wedge shape, and a pattern in which sound waves propagate is disclosed. FIG. 3 shows the main circuitry between processing the audio signal and the audio signal input and the audio signal output to the processed speaker. FIG. 4 is a plan view of a single rectangular housing with two cavities for the left and right speakers in addition to the third speaker in the central wedge shape. FIG. 5 is a front view of a single rear housing and a front wedge-shaped housing. FIG. 6 is a perspective view of a single rear housing and a front wedge-shaped housing. FIG. 7 shows the prior art representing sound waves generated by a conventional two-speaker stereo loudspeaker system. FIG. 8 shows the sound image range and sound waves generated by one embodiment of the present invention without time delay features. FIG. 9 shows the prior art representing a sound wave and sound image space using a conventional point source loudspeaker. FIG. 10 shows a clear sound image and sound waves generated by the present invention.

Explanation of symbols

5 A housing circuit showing the main elements of the circuit required to process and connect the audio elements in the speaker housing 7 A wire for the tweeter speaker or other type of support member attached to the center of each channel speaker A tweeter speaker support member 10 is a rectangular speaker housing 11 comprising a right channel speaker, a left channel speaker, a housing circuit, and a means for adapting a wedge shape comprising a central speaker. A housing partition 12 that separates the left cavity from the right cavity. A wedge shape that reflects the sound waves of the right and left channels and houses the central speaker. A wedge shape for attaching the wedge shape to the center of the speaker housing. Mounting position 15 Left tweeter speaker 16 that propagates high-frequency sound waves sent to the left channel 16 sent to the left speaker Left channel speaker 17 that propagates sound waves to be transmitted Right channel tweeter speaker 18 that propagates high frequency sound waves that are transmitted to the right channel The right channel speaker 19 that propagates sound waves to be transmitted to the right speaker is transmitted to the center channel. Center channel tweeter 20 that propagates high-frequency sound waves Center channel speaker 21 that propagates sound waves sent to the center speaker Face face 22 of the housing, which is the front surface of the housing placed on the two speakers High-frequency sound waves Suppression surface 23 on the left side of the wedge that is coated or made with a material that minimizes reflection of the right side Suppression surface 24 on the right side of the wedge that is coated or made with material that minimizes the reflection of high frequency sound waves Wedge face 25 which is the front of the wedge where the channel speaker is placed. Subwoofer speaker 26 that is a carrying subwoofer 26 Right side cavity 28 that is provided on the right side of the speaker housing and that is an opening that adjusts the right channel speaker. Left channel 30 The left channel audio input 32 is the left channel audio input to the housing The left channel power input 34 receives the input signal and amplifies it to the left channel audio output 34 The left channel conductor 36, which is the direct left audio channel conductor from the left channel audio input to the left channel power amplifier 36, is composed of resistors R3 and R4, and reduces the signal of the left channel to reduce the signal in half. Left channel attenuator 38, which is the component used for the audio signal Left channel conductor 40, which is a connector coupled to an attenuator that attenuates the input signal of the channel and connects to the amplifier of the output of the right channel The left channel from which the audio signal of the left channel is output to the left channel speaker Audio output 41 High frequency audio output for left channel is output to left channel tweeter High frequency audio output for left channel 42 Acoustic energy from left channel speaker is propagated and deflected by wedge shape Left channel energy range 50 Center channel power amplifier 52 that receives the input signal and amplifies it to the center channel audio output Center where acoustic energy from the center channel speaker propagates in the left and right energy ranges Channel energy range 55 Voice signal for the center channel Central channel audio output 56 output to the central channel speaker High frequency audio output of the central channel where the high frequency portion of the central channel audio signal is output to the central channel tweeter 58 Summing junction ) And the time delay network, the central channel summing conductor 59 The timing delay conductor 60 for the central channel, the connection between the time delay network and the power amplifier for the central channel Audio for the right channel Right channel audio input 62 where the signal is input to the housing Right channel power amplifier 64 that receives the input signal and amplifies it to the right channel audio output From the right channel audio input to the right channel Right channel that is the conductor of the right audio channel directly to the power amplifier. The right channel attenuator 68, which is the component used for the right channel audio signal to reduce the signal in half, to the original right channel input signal. Right channel conductor 70, which is a connector coupled to an attenuator that is attenuated and connected to the left channel output amplifier. Right channel audio output 71 where the right channel audio signal is output to the right channel speaker. Right channel high frequency audio output 72 where the high frequency portion of the right channel audio signal is output to the right channel tweeter Right channel energy where acoustic energy from the right channel speaker is propagated and deflected by a wedge shape Range 80 Left and right audio signals so that the output is half of the combined left and right signals A summing contact component 82 that acquires and sums them, usually a signal as an input from the summing contact, and a time delay network 83 in which the input signal is delayed by element T. Sound image space 84 which is a space Combined energy range in which acoustic energy from right, left and center channel speakers is propagated

Claims (5)

An acoustic energy system with audio output,
Input means for receiving first and second channel audio input signals, each represented as a left audio input signal channel (L) and a right audio input signal channel (R);
First, second and third audio output channels for generating first, second and third audio output signals;
Three loudspeakers, each having the same size and input / output specifications, each capable of receiving the first, second and third audio output signals and generating acoustic energy output therefrom Three possible loudspeakers,
Deriving means including an electric circuit connected to the input means, wherein the first audio output signal of the left channel output is derived as L- {1 / 2R}, and the second of the right channel output is derived. Is derived as R- {1 / 2L}, and T is the time delay used to balance the third output channel with the first and second output channels. Derivation means incorporating an electrical circuit for deriving the third audio output signal of the center channel output as 1/2 {L + R} -T
A single loudspeaker housing divided into two cavities, wherein two of the loudspeakers are respectively symmetrically on the same plane so that they are adjacent to the front of each cavity. A single loudspeaker housing arranged to face the listener;
A wedge-shaped loudspeaker housing in which a wedge-shaped apex is attached to the center of the single loudspeaker housing located between two cavities of the single loudspeaker housing, The front surface of the wedge-shaped loudspeaker housing has the same width as the two cavities of the single loudspeaker housing, and extends from the front surface of the wedge-shaped loudspeaker housing to the apex of the wedge. The depth is the same as the depth of the cavity of the single loudspeaker housing, and the inclined side surface of the wedge-shaped loudspeaker housing comprises means for suppressing acoustic energy; A loudspeaker is mounted on the wedge-shaped loudspeaker housing on a plane parallel to the two speakers of the single loudspeaker housing, the front of the wedge-shaped loudspeaker housing. Acoustic energy system of the audio output, characterized in that it comprises a a housing of the deployed wedge loudspeakers so as to face the listener. The sound output acoustic energy system according to claim 1,
The housing of the single loudspeaker and the housing of the wedge-shaped loudspeaker are:
Means for deriving a composite feed of high, mid and / or low frequencies from the audio output signal channel;
A sound output acoustic energy system comprising: a special loudspeaker that outputs a sound output frequency band in each of the left, right, and center channels. The sound output acoustic energy system according to claim 1,
An acoustic energy system for outputting sound, wherein both the casing of the single loudspeaker and the casing of the wedge-shaped loudspeaker are incorporated in a single casing. The sound output acoustic energy system according to claim 1,
The single loudspeaker housing is divided into two separate housings, and the wedge-shaped loudspeaker housings are arranged equidistant between the two separate housings; An acoustic energy system for outputting sound, wherein the two separate casings and the loudspeakers attached to the wedge-shaped casing are arranged on planes parallel to each other.   2. The sound output acoustic energy system according to claim 1, wherein a subwoofer and a tweeter output loudspeaker are added to the three loudspeakers.

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