CN213880232U - Full-frequency coaxial controllable directional loudspeaker system and loudspeaker box - Google Patents
Full-frequency coaxial controllable directional loudspeaker system and loudspeaker box Download PDFInfo
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- CN213880232U CN213880232U CN202022927354.4U CN202022927354U CN213880232U CN 213880232 U CN213880232 U CN 213880232U CN 202022927354 U CN202022927354 U CN 202022927354U CN 213880232 U CN213880232 U CN 213880232U
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Abstract
A full-frequency coaxial controllable directional loudspeaker system and a sound box relate to the technical field of sound boxes, wherein a shell of the full-frequency coaxial controllable directional loudspeaker system is provided with a sound channel, the side edge of the sound channel is provided with a resonance cavity, a medium and low-frequency loudspeaker is positioned in the resonance cavity, the medium and low-frequency loudspeaker is provided with a bass phase plug, the bass phase plug is connected with a folding horn for guiding sound waves into the sound channel, and the folding horn and the sound channel form the medium and low-frequency horn; the middle and high tone horn is assembled with the middle and high tone loudspeaker, is arranged on the central axis in the sound channel, and shares the same sound wave outlet with the middle and low tone loudspeaker. The horn of the medium and low sound loudspeaker is formed by folding the horn and the sound channel, and the medium and high sound horn is arranged on the central axis of the sound channel, so that each sound wave of the full frequency band can be effectively bound, the sound source of the sound wave can be kept at the same virtual point, the sound image localization and the reduction degree of the sound wave are greatly improved after the sound is wholly at the same point, and the sound amplification quality is improved.
Description
Technical Field
The utility model relates to an audio amplifier technical field especially relates to a coaxial controllable directive property speaker system and audio amplifier of full frequency.
Background
In indoor sound reinforcement or large-scale space sound reinforcement, reflection of sound waves and reverberation time inherent in a room cause interference cancellation in sound wave transmission, resulting in unclear sound. It cannot be eradicated due to the inherent nature of the room. Therefore, in indoor sound reinforcement design, acoustic decoration and acoustic sound reinforcement are the same important positions. Without acoustic design of architectural acoustics and later acoustic decoration, the better sound amplification equipment can not play a good role, and only can be accompanied by reflection and reverberation.
Thus, control of loudspeaker directivity is a good solution to largely solve the room reflection and reverberation problems. Firstly, the problem of budget is solved, and the sound box with controllable directivity can effectively restrict sound transmission, control the transmission path of sound waves, reduce harmful reflection of the sound waves, improve the proportion of a direct sound field and improve the definition of the sound. The limitations of conventional speakers are: the high frequency of a common sound box is transmitted through a horn, the horn of the common sound box is influenced by the volume area, and the control of sound waves only lies in medium-high frequency. Take a general 12-inch sound box as an example: the general width of 12 cun audio amplifier is 350mm, and the width of its bugle is littleer, must be less than whole box width 350 mm. For example, the maximum width is taken as an example, 350mm can only be controlled to a range of 1000Hz, but for the full-band music signal, 20 Hz-20 KHz, at least 200 Hz-8 KHz is also needed (voice transmission band). Due to the problem of beam wave capability, medium and low frequencies are not restricted, the pointing angle of the medium and low frequencies is large, and the medium and low frequencies can be randomly reflected in a room to generate interference with sound waves behind.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an one of the purposes lies in avoiding the weak point among the prior art and providing a full frequency coaxial controllable directive property speaker system, and this full frequency coaxial controllable directive property speaker system can retrain full range frequency sound wave, improves tone quality.
The purpose of the utility model is realized through the following technical scheme:
the full-frequency coaxial controllable directional speaker system comprises a shell, a medium-low tone speaker, a medium-high tone speaker and a medium-high tone horn, wherein the shell is provided with a unidirectional conducted sound channel, the side edge of the bottom of the sound channel is provided with a resonance cavity, the medium-low tone speaker is positioned in the resonance cavity, the front end of the medium-low tone speaker is provided with a bass phase plug, the front end of the bass phase plug is connected with a folding horn for guiding sound waves generated by the medium-low tone speaker into the sound channel, and the folding horn and the sound channel jointly form the medium-low tone horn; the middle and high-sound horn and the middle and high-sound loudspeaker are assembled, are positioned on a central axis in the front port of the sound channel, and share the same sound wave outlet with the middle and low-sound loudspeaker. The folded horns and the sound channels which are arranged form the horns of the medium and low sound speakers, the medium and high sound horns of the medium and high sound speakers are arranged on the central axis of the sound channels, and the two horns form a coaxial cavity-sharing structure, so that the medium and high frequencies, namely the full-frequency band frequencies, are respectively transmitted through a specified path, but are converged inside a large transmission horn, two sound waves are restrained by different horns respectively, but are transmitted on the same axis, so that the full-frequency band sound waves can be effectively restrained, the sound sources of the sound waves can be kept at the same virtual point, the sound is integrally at the same point, the sound image localization and the reduction degree of the sound waves are greatly improved, and the sound amplification can achieve high quality.
Furthermore, the front end of the midbass loudspeaker faces the input port of the folding horn. The front end of the medium and low sound loudspeaker faces the input port of the folding horn, so that sound waves generated by the medium and low sound loudspeaker can smoothly enter the folding horn, and the sound energy conversion efficiency is improved.
Further, bass phase plug includes bass phase plug body and sets up the through-hole on the bass phase plug body. The through hole in the bass phase plug is used as an outlet of the sound wave airflow, the sound wave airflow can generate a high-pressure sound wave with a high flow speed through the outlet, the problem that the phases of sound wave transmission are not uniform due to the inherent shape of the bass can be equalized, and therefore the acoustic transmission efficiency is improved. At this time, the folded horn acts like a transformer, and conducts the sound wave with high sound pressure formed by the narrow gap of the bass phase plug, and increases the sound wave again, and forms a large-scale bass horn with the outlet of the sound channel formed by the shell, so that the horn principle is generated, the sound pressure is well coupled with air impedance, and the folded horn is a part of the bass horn and is a horn channel of the sound wave.
Furthermore, one end of the through hole facing the midbass loudspeaker is arranged in a hemispherical shape. The through-hole is the sphere setting in the one end that faces midbass speaker, can be with in the leading-in through-hole of sound wave air current, further extrudeing the sound wave air current to further improve acoustics transmission efficiency.
Furthermore, a gap is reserved between the whole assembled middle and high sound horn and the middle and high sound loudspeaker and the inner wall of the sound channel. A gap is reserved between the whole assembled middle and high sound horn and the middle and high sound loudspeaker and the inner wall of the sound channel, so that sound waves generated by the middle and high sound loudspeaker can be transmitted out of the gap.
Furthermore, the resonance cavity is provided with two or more than two, each resonance cavity is internally provided with one midbass loudspeaker, the resonance cavities are distributed at equal angles, the distances from the resonance cavities to the central axis of the sound channel are equal, and the midbass loudspeakers are distributed at equal angles and the distances from the resonance cavities to the central axis of the sound channel are equal. For the midbass speakers, the number can be one or two or more, when the number is two or more, the midbass speakers need to be distributed at equal angles, and the distances from the midbass speakers to the central axis of the sound channel are equal, so that the time for transmitting sound waves generated by each midbass speaker into the sound channel is the same, and the sound waves can be concentrated on the central axis.
Furthermore, two resonance cavities are arranged, the two resonance cavities are symmetrically distributed by taking the central axis of the sound channel as a symmetry axis, and the midbass loudspeakers in the resonance cavities are symmetrically distributed by taking the central axis of the sound channel as a symmetry axis. The number of the medium and low sound loudspeakers is preferably two, and meanwhile, the medium and low sound loudspeakers are symmetrically distributed by taking the central axis of the sound channel as a symmetry axis.
Furthermore, the resonance cavity is provided with a phase inversion device. When the resonant frequency of the middle-low loudspeaker is restrained by the resonant cavity, the phase inverter can modulate the resonant frequency into a form of two peaks and one valley, so that the efficiency of low-frequency is improved, the uniformity of the direction of the low-frequency is ensured, and the consistency of sound waves and sound images is facilitated.
The second purpose of the present invention is to provide a sound box using the above-mentioned full-band coaxial controllable directional speaker system, wherein the folded horn and the sound channel are arranged to form the horn of the middle and low-frequency speakers, and the middle and high-frequency horns of the middle and high-frequency speakers are arranged on the central axis of the sound channel, so that the two horns form a coaxial cavity-sharing structure, so that the frequencies of the middle and high-frequency and middle and low-frequency, i.e. full-band, are transmitted through the designated path, but are converged inside a large transmission horn, and the two sound waves are constrained by different horns, but are transmitted on the same axis, thus effectively constraining the full-band sound waves, and also keeping the sound source of the sound waves at the same virtual point, and greatly improving the sound image localization and the reduction degree of the sound waves after the whole sound is at the same point, the sound reinforcement can be of high quality.
The utility model has the advantages that: the utility model discloses a full frequency coaxial controllable directional loudspeaker system and audio amplifier, this full frequency coaxial controllable directional loudspeaker system include casing, well woofer and high pitch horn, the casing sets up the sound passageway of one-way conduction, the side of the bottom of sound passageway is provided with the resonance cavity, well woofer is located in the resonance cavity, the front end of well woofer installs bass phase plug, bass phase plug front end is connected with and is used for leading-in the sound wave that well woofer produced in the sound passageway, folding horn and the sound passageway constitute well woofer jointly; the middle and high-sound horn and the middle and high-sound loudspeaker are assembled, are positioned on a central axis in the front port of the sound channel, and share the same sound wave outlet with the middle and low-sound loudspeaker. The utility model discloses the folded bugle and the sound channel that set up have constituted the bugle of well woofer, and well high-pitch bugle of well high-pitch loudspeaker sets up on the axis of sound channel again, make two bugles form the coaxial structure of sharing the cavity body altogether, make well high-frequency and well low frequency be the frequency of full frequency band and transmit respectively through appointed route, but assemble inside a big transmission bugle, two sound waves have received the restraint of different bugles separately, but it is transmitted at same axis again, can effectively tie to full frequency band sound wave like this, also can let the sound source of sound wave keep at same virtual point, sound is whole behind same point, the acoustic image location and the reduction degree of sound wave improve greatly, the loud speaker can accomplish very high quality.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is the utility model discloses a full frequency coaxial controllable directive property speaker system's overall structure cross-sectional view.
The figure includes:
the loudspeaker comprises a shell 1, a medium and low sound loudspeaker 2, a medium and high sound loudspeaker 3, a medium and high sound horn 4, a sound channel 5, a resonance cavity 6, a bass phase plug 7, a folding horn 8 and a phase inverter 9.
Detailed Description
The invention will be further described with reference to the following examples.
Example 1
The full-frequency coaxial controllable directional speaker system of the embodiment is shown in fig. 1, and includes a housing 1, a medium-low-pitch speaker 2, a medium-high-pitch speaker 3, and a medium-high-pitch horn 4, where the housing 1 is provided with a unidirectional sound channel 5, a resonance cavity 6 is disposed on a side edge of the bottom of the sound channel 5, the medium-low-pitch speaker 2 is located in the resonance cavity 6, a low-pitch phase plug 7 is installed at a front end of the medium-low-pitch speaker 2, a folded horn 8 for guiding sound waves generated by the medium-low-pitch speaker 2 into the sound channel 5 is connected to the front end of the low-pitch phase plug 7, and the folded horn 8 and the sound channel 5 together form the medium-low-pitch horn; the middle and high sound horn 4 is assembled with the middle and high sound loudspeaker 3, is positioned on a central axis in the front port of the sound channel 5, and shares the same sound wave outlet with the middle and high sound loudspeaker 2. The folded horn 8 and the sound channel 5 which are arranged form the horn of the middle and high sound loudspeaker 2, the middle and high sound horn 4 of the middle and high sound loudspeaker 3 is arranged on the central axis of the sound channel 5, the two horns form a coaxial cavity-sharing structure, the middle and high frequencies, namely the frequencies of the full frequency band, are transmitted through the specified path respectively but are converged inside a large transmission horn, the two sound waves are constrained by different horns respectively, but are transmitted on the same axis, so that the sound waves of the full frequency band can be effectively constrained, the sound sources of the sound waves can be kept at the same virtual point, the sound image localization and the reduction degree of the sound waves are greatly improved after the sound is wholly at the same point, and the sound amplification can achieve high quality. The folding horn 8 connected to the front end of the bass phase plug 7 is equivalent to a low-medium frequency sound channel, determines the direction of low-medium frequency transmission, and forms a low-medium frequency horn together with the sound channel 5, and the low-medium frequency horn and the high-medium frequency horn are converged at the same sound outlet.
The front end of the midbass loudspeaker 2 faces the input port of the folded horn 7. The front end of the mid-bass loudspeaker 2 is just opposite to the input port of the folding horn 7, so that sound waves generated by the mid-bass loudspeaker 2 can smoothly enter the folding horn 7, and the sound energy conversion efficiency is improved.
The through hole is arranged in a hemispherical shape facing one end of the midbass loudspeaker 2. The through-hole is the sphere setting in the one end that faces midbass speaker 2, can be with in the leading-in through-hole of sound wave air current, further extrudeing the sound wave air current to further improve acoustics transmission efficiency.
And a gap is reserved between the whole assembled middle and high sound horn 4 and the middle and high sound loudspeaker 3 and the inner wall of the sound channel 5. A gap is left between the whole assembled middle and high sound horn 4 and the middle and high sound loudspeaker 3 and the inner wall of the sound channel 5, so that sound waves generated by the middle and high sound loudspeaker 2 can be transmitted out from the gap.
The resonance cavity 6 is provided with two or more, and every all be provided with one in the resonance cavity 6 the midbass speaker 2, the resonance cavity 6 is the equal angular distribution, and the distance to the axis of sound passageway 5 is equal, the midbass speaker 2 is the equal angular distribution, and the distance to the axis of sound passageway 5 is equal. For the midbass speakers 2, the number may be one, or two or more, and when the number is two or more, the midbass speakers 2 need to be distributed at equal angles, and the distances from the midbass speakers 2 to the central axis of the sound channel are equal, so that the time for transmitting the sound waves generated by each midbass speaker 2 to the sound channel 5 can be ensured to be the same, and the sound waves can be concentrated on the central axis.
The two resonance cavities 6 are arranged, the two resonance cavities 6 are symmetrically distributed by taking the central axis of the sound channel 5 as a symmetry axis, and the midbass loudspeakers 2 in the resonance cavities 6 are symmetrically distributed by taking the central axis of the sound channel 5 as a symmetry axis. The number of the midbass speakers 2 is preferably two, and meanwhile, the midbass speakers 2 are symmetrically distributed by taking the central axis of the sound channel as a symmetry axis.
The resonant cavity 6 is provided with an inverter 9. When the resonant frequency of the middle-low loudspeaker 2 is restrained by the resonant cavity 6, the phase inverter 9 can modulate the resonant frequency into a two-peak one-valley form, so that the efficiency of the low-frequency is improved, the uniformity of the direction of the low-frequency is ensured, and the consistency of sound wave and sound image is facilitated.
Example 2
This embodiment provides an acoustic enclosure using the full-band coaxial controllable directional speaker system described in embodiment 1, because the arranged folding horn 8 and the sound channel 5 form the horn of the middle and high sound loudspeaker 2, and the middle and high sound horn 4 of the middle and high sound loudspeaker 3 is arranged on the central axis of the sound channel 5, the two horns form a coaxial cavity-sharing structure, so that the frequencies of middle and high frequencies and middle and low frequencies, namely full frequency bands, are respectively transmitted through a specified path, but are converged inside a large transmission horn, the two sound waves are constrained by different horns, but it is transmitted again at same axis, can effectively tie to full frequency band sound wave like this, also can let the sound source of sound wave keep same virtual point, and the sound is whole behind the same point, and the sound image localization and the degree of restitution of sound wave improve greatly, and the sound reinforcement can accomplish very high quality.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides a full frequency coaxial controllable directive property speaker system, includes casing, well woofer, well high pitch speaker and well high pitch horn, its characterized in that: the shell is provided with a unidirectional conducted sound channel, a resonance cavity is arranged on the side edge of the bottom of the sound channel, the medium and low-frequency loudspeaker is positioned in the resonance cavity, a low-frequency phase plug is installed at the front end of the medium and low-frequency loudspeaker, the front end of the low-frequency phase plug is connected with a folding horn for guiding sound waves generated by the medium and low-frequency loudspeaker into the sound channel, and the folding horn and the sound channel jointly form the medium and low-frequency horn; the middle and high-sound horn and the middle and high-sound loudspeaker are assembled, are positioned on a central axis in the front port of the sound channel, and share the same sound wave outlet with the middle and low-sound loudspeaker.
2. The full-band coaxial controllable directional speaker system as claimed in claim 1, wherein: the front end of the midbass loudspeaker faces the input port of the folding horn.
3. A full-band coaxial controllable directional speaker system as claimed in claim 2, wherein: the bass phase plug comprises a bass phase plug body and a through hole formed in the bass phase plug body.
4. A full-band coaxial controllable directional speaker system as claimed in claim 3, wherein: the through hole is arranged in a hemispherical shape facing one end of the alto loudspeaker.
5. The full-band coaxial controllable directional speaker system as claimed in claim 1, wherein: and a gap is reserved between the whole assembled middle and high sound horn and the middle and high sound loudspeaker and the inner wall of the sound channel.
6. The full-band coaxial controllable directional speaker system as claimed in claim 1, wherein: the resonance cavity is provided with two or more than two, and every resonance cavity is internal all to be provided with one the alto-woofer, the resonance cavity is the equal angular distribution, and the distance to the axis of sound passageway is equal, alto-woofer is the equal angular distribution, and the distance to the axis of sound passageway is equal.
7. The full-band coaxial controllable directional speaker system as claimed in claim 6, wherein: the two resonance cavities are symmetrically distributed by taking the central axis of the sound channel as a symmetry axis, and the midbass loudspeakers in the resonance cavities are symmetrically distributed by taking the central axis of the sound channel as a symmetry axis.
8. The full-band coaxial controllable directional speaker system as claimed in claim 1, wherein: the resonance cavity is provided with a phase inversion device.
9. A sound box is characterized in that: a full frequency coaxial controllable directional loudspeaker system comprising a loudspeaker according to any of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022927354.4U CN213880232U (en) | 2020-12-09 | 2020-12-09 | Full-frequency coaxial controllable directional loudspeaker system and loudspeaker box |
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| CN202022927354.4U CN213880232U (en) | 2020-12-09 | 2020-12-09 | Full-frequency coaxial controllable directional loudspeaker system and loudspeaker box |
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| CN213880232U true CN213880232U (en) | 2021-08-03 |
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| CN202022927354.4U Active CN213880232U (en) | 2020-12-09 | 2020-12-09 | Full-frequency coaxial controllable directional loudspeaker system and loudspeaker box |
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