CN221127476U - Super-coaxial two-frequency phased array linear array loudspeaker device - Google Patents

Abstract

The application discloses a super-coaxial two-frequency phased array linear array loudspeaker device, which relates to the technical field of professional sound amplifying systems and comprises a box body; the loudspeaker unit module is arranged on the box body and comprises a high-pitched unit and a low-pitched unit, and the high-pitched unit is fixed on the low-pitched unit through a horn; and the power amplification board is arranged on the box body and is used for sending the audio signals to the loudspeaker unit module. The application provides a super-coaxial two-frequency phased array linear array loudspeaker device, wherein the axes of a high-pitch unit and a low-pitch unit are the same, and the effect and performance of an audio system are improved.

Description

Super-coaxial two-frequency phased array linear array loudspeaker device

Technical Field

The application relates to the technical field of professional sound amplification systems, in particular to a super-coaxial two-frequency phased array linear array loudspeaker device.

Background

In various public places, linear array loudspeakers are increasingly selected for amplifying, most of the current main linear array loudspeakers are composed of full-frequency units, interference and dispersion effects can be generated in frequency response by the structure, and directivity changes at different frequencies are relatively large.

Although there are linear array speakers on the market, which are composed of two frequency division units having non-identical high and low frequency units, the high and low frequency units are not in the same center, and thus phase shift is likely to occur, which leads to distortion of audio waveforms.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the application provides the super-coaxial two-frequency phased array linear array loudspeaker device, wherein the axes of a high-pitch unit and a low-pitch unit are the same, the effect and the performance of an audio system are improved, and the problems in the background technology can be effectively solved.

The application provides a super-coaxial two-frequency phased array linear array loudspeaker device, which adopts the following technical scheme:

A super-coaxial, two-frequency phased array linear array speaker apparatus comprising:

A case;

the loudspeaker unit module is arranged on the box body and comprises a high-pitched unit and a low-pitched unit, and the high-pitched unit is fixed on the low-pitched unit through a horn;

And the power amplification board is arranged on the box body and is used for sending the audio signals to the loudspeaker unit module.

In any of the above schemes, preferably, the case body is provided with four front air holes, and the diameters of the front air holes are the same.

In any of the above schemes, preferably, the bass unit has eight bass units uniformly mounted on the surface of the cabinet and mounted on the same vertical axis.

In any of the above aspects, preferably, the tweeter units have twenty-four and are divided into eight groups, each group having three tweeter units mounted on the horn.

In any of the above embodiments, it is preferable that the eight sets of horn are fixed to the eight bass units, respectively, and the horn is the same as the axis of the bass unit.

In any of the above schemes, preferably, the power amplification board includes a frequency division circuit module, a digital power amplifier module and a phased array electronic module; the phased array electronic module is connected with the digital power amplifier module; the digital power amplifier module is connected with the frequency dividing circuit module; the frequency dividing circuit module is connected with the loudspeaker unit module.

In any of the above schemes, preferably, the phased array electronic module includes an audio signal source, an input end analog-to-digital conversion module, a signal matrix module, a phase adjustment module, a high-low pass filter module and an FIR filter module; the audio signal source is connected with the input end analog-to-digital conversion module; the input end analog-to-digital conversion module is connected with the signal matrix module; the signal matrix module is connected with the phase adjusting module; the phase adjusting module is connected with the high-low pass filter module; the high-low pass filter module is connected with the FIR filter module; the FIR filter module is connected with the digital power amplifier module.

In any of the above schemes, it is preferable that the power amplification board is provided with a network cable interface, a signal line hole, a power jack and a power switch.

In summary, the present application includes at least one of the following beneficial technical effects: the high-pitch unit and the low-pitch unit are fixed together through the horn to form a super-coaxial high-low frequency unit structure, so that the audio signals can be emitted at the same point source, and the problem of sound dislocation of the array loudspeaker caused by separation of the high-pitch unit and the low-pitch unit is avoided; due to the coaxial emission of sound, the diffusion and attenuation of the sound in space can be reduced, so that the sound has a longer propagation distance and a wider coverage range; the array design of the super-coaxial high-low frequency unit structure on the box body enables sound to be transmitted with a certain phase difference, achieves directional transmission and positioning effects of the sound, and can adjust the transmission direction and range of the sound according to requirements, so that the sound is more concentrated and clear in an area, and can bring more immersive feelings to audiences in places such as cinema, concert and the like.

Drawings

Fig. 1 is a perspective view of a super-coaxial, two-frequency phased array linear array speaker apparatus of the present application;

Fig. 2 is another perspective view of the super coaxial, two-division phased array linear array speaker apparatus of the present application;

FIG. 3 is a cross-sectional view of a super-coaxial, two-frequency phased array linear array speaker apparatus of the present application;

FIG. 4 is an exploded schematic view of the super-coaxial high and low frequency unit structure of the super-coaxial two-frequency phased array linear array speaker apparatus of the present application;

Fig. 5 is a flow chart of the operation of the super-coaxial, two-frequency phased array linear array speaker apparatus of the present application.

Reference numerals: 1. a case; 2. a speaker unit module; 3. a power amplification board; 11. a front air vent; 21. a treble unit; 22. a bass unit; 23. a horn; 31. a frequency dividing circuit module; 32. a digital power amplifier module; 33. a phased array electronics module; 301. a network cable interface; 302. a signal line hole; 303. a power jack; 304. a power switch; 331. an audio signal source; 332. an input end analog-to-digital conversion module; 333. a signal matrix module; 334. a phase adjustment module; 335. a high-low pass filter module; 336. and an FIR filter module.

Detailed Description

In order to make the technical scheme and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In order to better understand the above technical solutions, the present application is further described in detail below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, a super-coaxial two-frequency phased array linear array speaker apparatus includes:

a case 1;

a speaker unit module 2 mounted on the cabinet 1 and including a high-pitched sound unit 21 and a low-pitched sound unit 22, the high-pitched sound unit 21 being fixed to the low-pitched sound unit 22 through a horn 23;

and a power amplification board 3 mounted on the cabinet 1 for sending the audio signal to the speaker unit module 2.

In the embodiment of the utility model, the box body 1 is a shell of the loudspeaker and has the functions of protection and support; the loudspeaker unit module 2 can replay audio signals and comprises a high-pitch unit 21 and a low-pitch unit 22, wherein the high-pitch unit 21 and the low-pitch unit 22 are fixed together through a horn 23 to form a super-coaxial high-low frequency unit structure, so that the audio signals can be emitted from the same point source, and the problem of sound dislocation of the array loudspeaker caused by separation of the high-pitch unit and the low-pitch unit is avoided; due to the coaxial emission of sound, the diffusion and attenuation of the sound in space can be reduced, so that the sound has a longer propagation distance and a wider coverage range; the super-coaxial high-low frequency unit structure is designed on the array on the box body 1, so that sound can be transmitted with a certain phase difference, the directional transmission and positioning effects of the sound are realized, the transmission direction and range of the sound can be adjusted according to the need, and the sound is more concentrated and clear in the area; the audio signal is sent to the loudspeaker unit module 2 through the power amplification board 3, so that the amplification and driving of the signal are realized, and the high fidelity of the audio signal is ensured.

As shown in fig. 1 to 5, the case 1 is provided with four front air holes 11 with the same diameter.

In the embodiment of the utility model, the front air guide hole 11 is a sound box guide hole and is used for guiding out low-frequency sound generated backward when the loudspeaker vibrates, avoiding reflection and resonance of the sound waves in the box body, reducing the pressure of the space in the box body, reducing the negative influence on the sound quality, improving the efficiency of the sound box and increasing the low volume; the advantage of the front guide hole 11 is that the influence of the surrounding environment of the sound box, especially the rear environment, is less, the placement position of the sound box is not strict, and the rear can be placed close to the wall.

As shown in fig. 1 to 5, the bass unit 22 has eight units, is uniformly mounted on the surface of the cabinet 1, and is mounted on the same vertical axis.

In the embodiment of the present utility model, the 4.5 inch bass unit 22 is used for generating low-frequency audio signals, so that the overall tone quality and the sound field effect of the sound system can be enhanced, and stronger sound pressure level and richer bass effect can be provided; the bass unit 22 is uniformly arranged on the surface of the box body 1 and on the same vertical axis, can spread with a certain phase difference, realizes the directional spreading and positioning effects of sound, and can adjust the spreading direction and range of the sound according to the need so that the sound is more concentrated and clear in the area; the sound field can be enlarged, so that the distribution of the bass sounds is more uniform, the problem that the sounds are concentrated in a certain area is avoided, and the bass sounds can be better transmitted and covered.

As shown in fig. 1 to 5, the tweeter units 21 have twenty-four, eight groups of three tweeter units 21 each mounted on the horn 23.

In the embodiment of the utility model, the high-frequency units 21 are divided into eight groups, and each group of three high-frequency units 21 are arranged on the horn 23, so that wider audio coverage can be realized, the balance of a sound field can be better controlled, and the problem that sound is concentrated in a certain area is avoided; the three high frequency units 21 in each group may work cooperatively to provide a more uniform and consistent sound projection; each group of three high-frequency units 21 are arranged on the horn 23, so that the directivity of the high-pitched sound can be more accurate, and a listener can feel the direction and the position of the high-pitched sound more clearly; the high-frequency sound wave can be compressed and strengthened through the horn 23 phase plug, and the coupling of the high-frequency sound wave and the phase is optimized, so that the sound expansion effect is better.

As shown in fig. 1 to 5, the eight horn groups 23 are fixed to the eight bass units 22, respectively, and the horn groups 23 are the same as the axes of the bass units 22.

In the embodiment of the utility model, eight clarions 23 assembled with three treble units 21 are respectively fixed above eight bass units 22, and the axes of the eight clarions 23 are respectively in the same center with the eight bass units 22 and on the same vertical axis; the three high-pitch units 21 and one low-pitch unit 22 are fixed together through one horn 23 to form a super-coaxial high-low frequency unit structure, so that the audio signals can be emitted at the same point source, and the problem of sound dislocation of the array loudspeaker caused by separation of the high-pitch units and the low-pitch units is avoided; due to the coaxial emission of sound, the diffusion and attenuation of sound in space can be reduced, so that the sound has a longer propagation distance and a wider coverage range.

As shown in fig. 1 to 5, the power amplification board 3 includes a frequency dividing circuit module 31, a digital power amplifier module 32, and a phased array electronic module 33; the phased array electronics module 33 is connected to the digital power amplifier module 32; the digital power amplifier module 32 is connected with the frequency dividing circuit module 31; the crossover circuit module 31 is connected to the speaker unit module 2.

In the embodiment of the present utility model, the three treble units 21 and one bass unit 22 in the speaker unit module 2 form a super-coaxial high-low frequency unit structure, and eight sets of super-coaxial high-low frequency units are respectively connected to eight super-coaxial high-low frequency dividers of the frequency dividing circuit module 31, the eight super-coaxial high-low frequency dividers are respectively connected to eight digital power amplifier channels of the digital power amplifier module 32, and the eight digital power amplifiers are respectively connected to the phased array electronic module 33.

As shown in fig. 1 to 5, the phased array electronic module 33 includes an audio signal source 331, an input analog-to-digital conversion module 332, a signal matrix module 333, a phase adjustment module 334, a high-low pass filter module 335, and an FIR filter module 336; the audio signal source 331 is connected with the input end analog-to-digital conversion module 332; the input end analog-to-digital conversion module 332 is connected with the signal matrix module 333; the signal matrix module 333 is connected with the phase adjustment module 334; the phase adjustment module 334 is connected with a high-low pass filter module 335; the high-low pass filter module 335 is connected to the FIR filter module 336; the FIR filter module 336 is connected to the digital power amplifier module 32.

In the embodiment of the present utility model, the audio signal source 331 is input to the phased array electronic module 33, and first enters the input end analog-to-digital conversion module 332 to perform analog-to-digital conversion to obtain digital signals, one path of digital signals is digitally distributed into eight identical signals through the signal matrix module 333, and then is sent to the phase adjustment module 334 in the DSP module function, and the phase of each unit is adjusted to reach the target phased array direction, then enters the high-low pass filter module 335 to cut off the signal of each channel according to the speaker unit characteristic to perform high-order filtering, so as to realize unnecessary energy loss and improve hearing, then enters the FIR filter module 336 to perform weighting optimization on the signal of each channel according to the phased array angle and the structural characteristic, and then converts each optimized digital signal into an analog signal, and sends the analog signal to the corresponding digital power amplifier channel in the digital power amplifier module 32 to perform electric signal amplification.

As shown in fig. 1 to 5, the power amplifier board 3 is provided with a network cable interface 301, a signal cable hole 302, a power jack 303 and a power switch 304.

In the embodiment of the present utility model, the network cable interface 301 is used to connect to a network and realize data transmission and communication, and through the network cable interface, the power amplifier board 3 can be connected to other devices or networks to realize data transmission and sharing; the signal line hole 302 is used for connecting other devices or apparatuses to transmit signals and control information, and the power amplification board 3 and the other devices can be transmitted and interacted through the signal line hole to realize various functions and operations; the power jack 303 is used for connecting a power adapter or a power line to supply power to the power amplification board 3, and can provide stable power for the power amplification board 3 through the power jack 303 so as to ensure the normal operation and work of the power amplification board 3; the power switch 304 is used for controlling the power supply of the power amplification board 3, and can realize the opening and closing of the power amplification board 3 through the power switch, so as to control the use and the energy consumption of the power amplification board 3 according to the requirement.

When in use, the power switch 304 is turned on, other devices are connected with the network cable interface 301 and the signal wire hole 302, the audio signal source 331 is input to the phased array electronic module 33, firstly, the audio signal source enters the input end analog-to-digital conversion module 332 to be subjected to analog-to-digital conversion to obtain digital signals, one path of digital signals is distributed into eight identical signals through the digital matrix module 333 and is sent to the phase adjusting module 334 in the DSP module function, the phase of each unit is adjusted to reach the target phased array direction, then the high-low pass filter module 335 is used for performing high-order filtering and cutting on the signals of each channel according to the characteristics of the loudspeaker units to realize unnecessary energy loss and hearing enhancement, the FIR filter module 336 is used for realizing weighting optimization on the signals of each channel according to the phased array angle and the structural characteristics, then each optimized digital signal is converted into an analog signal and sent to a corresponding digital power amplifier channel in the digital power amplifier module 32 for electric signal amplification, then each amplified audio signal is sent to a corresponding super-coaxial high-low frequency divider in the frequency dividing circuit module 31, the high-low frequency dividing circuit filters and divides the amplified audio signal and then sends the amplified audio signal to a corresponding high-frequency speaker unit and a low-frequency speaker unit respectively, three high-frequency speaker units 21 and one low-frequency speaker unit 22 in the speaker unit module 2 form a super-coaxial high-low frequency unit structure, the audio signal can be sent out at the same point source, the problem of sound dislocation caused by separation of the high-frequency speaker units and the low-frequency speaker units can be avoided, each high-frequency speaker unit and the low-frequency speaker unit play the signals, the low-frequency sound wave energy can be compressed and enhanced when passing through the high-frequency speaker horn 23, the high-frequency sound wave can be compressed and strengthened through the phase plug of the horn 23 of the high-frequency loudspeaker, and the coupling optimization of the phase is realized, so that the sound expansion effect is better.

The above is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that the present application is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. A super-coaxial, two-division phased array linear array speaker apparatus, characterized by: comprising the following steps: a case (1);

A speaker unit module (2) mounted on the cabinet (1) and including a high-pitched unit (21) and a low-pitched unit (22), the high-pitched unit (21) being fixed to the low-pitched unit (22) through a horn (23);

and the power amplification board (3) is arranged on the box body (1) and is used for sending the audio signals to the loudspeaker unit module (2).

2. The super-coaxial, two-frequency, phased array linear array speaker apparatus of claim 1, wherein: four front air guide holes (11) are formed in the box body (1) and have the same diameter.

3. The super-coaxial, two-frequency, phased array linear array speaker apparatus of claim 2, wherein: the bass units (22) are provided with eight bass units, are uniformly arranged on the surface of the box body (1) and are arranged on the same vertical axis.

4. A super-coaxial, two-frequency, phased array linear array speaker apparatus as claimed in claim 3 wherein: the tweeter units (21) have twenty-four, eight groups of three tweeter units (21) each mounted on the horn (23).

5. The super coaxial, two-frequency, phased array linear array speaker apparatus of claim 4, wherein: the eight groups of horns (23) are respectively fixed on the eight bass units (22), and the horns (23) are the same as the axes of the bass units (22).

6. The super-coaxial, two-frequency, phased array linear array speaker apparatus of claim 5, wherein: the power amplification board (3) comprises a frequency division circuit module (31), a digital power amplifier module (32) and a phased array electronic module (33);

The phased array electronic module (33) is connected with the digital power amplifier module (32);

the digital power amplifier module (32) is connected with the frequency dividing circuit module (31);

The frequency dividing circuit module (31) is connected with the loudspeaker unit module (2).

7. The super-coaxial, two-frequency, phased array linear array speaker apparatus of claim 6, wherein: the phased array electronic module (33) comprises an audio signal source (331), an input end analog-to-digital conversion module (332), a signal matrix module (333), a phase adjustment module (334), a high-low pass filter module (335) and an FIR filter module (336);

The audio signal source (331) is connected with the input end analog-to-digital conversion module (332);

The input end analog-to-digital conversion module (332) is connected with the signal matrix module (333);

the signal matrix module (333) is connected with the phase adjustment module (334);

The phase adjustment module (334) is connected with a high-low pass filter module (335);

The high-low pass filter module (335) is connected with the FIR filter module (336);

the FIR filter module (336) is coupled to the digital power amplifier module (32).

8. The super coaxial, two-frequency, phased array linear array speaker apparatus of claim 7, wherein: the power amplification board (3) is provided with a network cable interface (301), a signal wire hole (302), a power jack (303) and a power switch (304).