CN101720052B - Speaker system with three-dimensional adjustable voice directions - Google Patents
Speaker system with three-dimensional adjustable voice directions Download PDFInfo
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- CN101720052B CN101720052B CN 200910253927 CN200910253927A CN101720052B CN 101720052 B CN101720052 B CN 101720052B CN 200910253927 CN200910253927 CN 200910253927 CN 200910253927 A CN200910253927 A CN 200910253927A CN 101720052 B CN101720052 B CN 101720052B
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Abstract
The invention discloses a speaker system with three-dimensional adjustable voice directions, comprising an electronic controller and a plurality of parallel controllable voice columns. The electronic controller can adjust the horizontality and the distance of the voice directions; the controllable voice columns are connected with the electronic controller and can adjust the uprightness and the distance of the voice directions; and the electronic controller comprises a voice input unit, an ADC unit, a front DSP unit, an FPGA unit and a rear multi-path DSP unit. The electronic controller controls a plurality of controllable voice columns to form the speaker system and utilizes the DSP unit an the FPGA unit to control the voice frequency signals of different controllable voice columns so as to control the voice directions and the angles of the voice columns in arrangement directions and adjust far and near accumulation. The invention does not need mechanically adjust the self mounting directions of the voice columns and can adjust the uprightness, the horizontality and the distances of the voice direction of sound in an electronic mode, i.e. the three-dimensional electronic adjustment of the voice directions, thereby being widely applied to large places, such as stadiums, and the like.
Description
Technical field
The present invention relates to a kind of speaker system.
Background technology
In the electroacoustic techniques, the speaker system of being made up of many phonation units in extensive use.Phonation unit quantity is many, can increase the public address sound pressure level; On the other hand, many phonation units can be controlled voice directions through the difformity combination.Existing public address technology is very easy to increasing the public address sound pressure level, and the control voice directions is in the forward position conceptual phase.
For example, the speaker system of theater stage both sides, vertical sounding angle should be narrower, and the sound of directive ceiling is reduced in a sound directive auditorium as far as possible, because the sound of directive ceiling is useless, causes the public address energy dissipation.Moreover, the reverberation aloft of useless sound descends sound articulation, need increase sound absorption to the public address environment and handle and just can listen to clearly, and the cost that sound absorption is handled is the manyfold of sound reinforcement system, and sound absorption and environmental harmony are also very difficult to manage.Outdoor, the sound of directive top can be propagated far, causes sound pollution.
Not only vertical sounding angle needs control, and horizontal voice directions also need be regulated the sounding width, and along with spectator attendance changes scalable voice directions and focus, is the best can just evenly covering audience again.
In a word,,, then can effectively improve tonequality, and reduce investment significantly, reduce the trouble that architectural acoustics is handled if can control voice directions well in various public address occasions.
For controlling voice directions well, need be to speaker system towards adjusting with combined shaped.Yet, though be the adjustment speaker system towards, or shape adjustments all bothers very much, and can not with various public address environmental harmonies, have between tonequality and environment, reach certain compromise; Accomplish to adjust in real time, especially difficulty according to every performance situation.
Summary of the invention
In order to solve the above problems, the object of the present invention is to provide a kind of speaker system that can conveniently carry out any adjusting in the three dimensions to voice directions.
The present invention solves the technical scheme that its problem adopts: the three-dimensional adjustable speaker system of a kind of voice directions; Comprise can to voice directions level and the far and near electronic controller of regulating with connected side by side many can be to the vertical and far and near controlled sound column of regulating of voice directions, the on-mechanical way is carried out the voice directions adjusting through electronic technology.Wherein, described electronic controller comprises:
The audio frequency input unit can insert the audio signal of the medium that come from the outside;
The ADC unit, the output that it connects the audio frequency input unit carries out analog-to-digital conversion to audio signal;
Prime DSP unit carries out frequency characteristic compensation to audio signal, and can control audio commonly used.
The FPGA unit, the output that it connects prime DSP unit can carry out the DAB interpolation, improves sample frequency, quantified precision, and audio signal is carried out phase shift control;
Amplitude and phase control to every road audio signal different frequency are realized in level multichannel DSP unit, back;
The output of multichannel DSP unit respectively connects a controlled sound column.
Wherein, described many controlled sound columns side by side, every controlled sound column comprises shell, built-in circuit, is arranged on a plurality of loudspeaker units that straight line forms a line on the shell; Said built-in circuit comprises:
The audio frequency input unit can insert the audio signal of the medium that come from the outside;
The ADC unit, the output that it connects the audio frequency input unit carries out analog-to-digital conversion to audio signal;
Prime DSP unit carries out frequency characteristic compensation to audio signal, and can control audio commonly used;
The FPGA unit, the output that it connects prime DSP unit can carry out the DAB interpolation, improves sample frequency, quantified precision, and audio signal is carried out phase shift control;
Amplitude and phase control to every road audio signal different frequency are realized in level multichannel DSP unit, back;
The multichannel power amplifier unit, it connects the output of multichannel DSP unit, and the output of said multichannel power amplifier unit respectively connects a loudspeaker unit, and promotes loud speaker list cloth sounding;
Wherein, described power amplifier unit is a digital power amplifier.
The invention has the beneficial effects as follows: of the present inventionly form speaker system by many controlled sound columns of electronic controller control.Electronic controller utilizes DSP unit and FPGA unit that the audio signal of different controlled sound columns is carried out the Comprehensive Control of frequency, phase place and amplitude, realizes voice directions in the sound column orientation and angle control, and far and nearly assembles adjusting.Controlled sound column then can be controlled its voice directions and angle along the column direction; And regulate far and near the gathering, therefore, do not need mechanical type to regulate the installation position of sound column itself; The mode of available electron realize to about the sound voice directions, about, far and near adjusting; The three-dimensional electronic that is voice directions is regulated, and can be widely used in the venue of racing, and arbitrarily changes the overlay area of sound through electrical adjustment; Can largely improve speech articulation, save the public address energy, and can simplify installation, accomplish the coordinating and unifying of public address equipment and environment.
Among the present invention; Electronic controller and controlled sound column are identical to the Principles of Regulation of sound; Principles of Regulation with controlled sound column describe below: controlled sound column utilizes FPGA unit and DSP unit that audio signal is carried out phase shift control; Can be conveniently to the voice directions of sound column, promptly the main lobe direction of sound wave and width are regulated.The amount of delay of the same frequency of the audio signal through adjusting each loudspeaker unit, as make it have the amount of delay that equates at interval, can form rectilinear wave surface with certain deviation angle; And make it have the amount of delay that does not wait at interval; Can obtain convex arc, difform wave surface such as concave arc forms the effect that focuses on and defocus on the similar optics; So that the width of sound wave main lobe is regulated, realized the control of the sound voice directions of controlled sound column on its column direction easily.In like manner, electronic controller has been realized the control to the sound voice directions in many controlled sound column orientations.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Fig. 1 is an acoustic wave beam sketch map of the present invention;
Fig. 2 is the three-dimensional adjustable speaker system principle schematic of voice directions of the present invention;
Fig. 3 is the three-dimensional adjustable speaker system structural representation of voice directions of the present invention.
Fig. 4 is the audio signal processing unit sketch map of the controlled sound column of the present invention;
Fig. 5 is that sound wave main lobe direction of the present invention is regulated sketch map;
Fig. 6 is that sound wave main lobe of the present invention focuses on formation concave arc wave surface sketch map;
Fig. 7 is that sound wave main lobe of the present invention defocuses formation convex arc wave surface sketch map;
Fig. 8 is a FPGA cell signal process chart of the present invention;
Fig. 9 is a prime DSP cell signal process chart of the present invention;
Figure 10 is a level DSP cell signal process chart behind the present invention.
Embodiment
With reference to Fig. 1, the acoustic wave beam signal that sound column 1 is sent includes sound wave main lobe 2, the deflection angle 4 of secondary lobe 3 and main lobe and main lobe direction 5.Referring to figs. 2 to Figure 10; The three-dimensional adjustable speaker system of a kind of voice directions of the present invention; Comprise can to voice directions level and the far and near electronic controller of regulating 6 with connected side by side many can be to the vertical and far and near controlled sound column of regulating 7 of voice directions, said electronic controller 6 comprises:
The audio frequency input unit can insert the audio signal of the medium that come from the outside;
The ADC unit, the output that it connects the audio frequency input unit carries out analog-to-digital conversion to audio signal;
Prime DSP unit carries out frequency characteristic compensation to audio signal, and can control audio commonly used.
The FPGA unit, the output that it connects prime DSP unit can carry out the DAB interpolation, improves sample frequency, quantified precision, and audio signal is carried out phase shift control;
Amplitude and phase control to every road audio signal different frequency are realized in level multichannel DSP unit, back.
The output of multichannel DSP unit respectively connects a controlled sound column.
In conjunction with Fig. 4, as preferred implementation, in described many controlled sound columns side by side, every controlled sound column 7 comprises shell, built-in circuit, is arranged on a plurality of loudspeaker units 8 that straight line forms a line on the shell; Said built-in circuit comprises:
The audio frequency input unit can insert the audio signal of the medium that come from the outside;
The ADC unit, the output that it connects the audio frequency input unit carries out analog-to-digital conversion to audio signal;
Prime DSP unit carries out frequency characteristic compensation to audio signal, and can control audio commonly used;
The FPGA unit, the output that it connects prime DSP unit can carry out the DAB interpolation, improves sample frequency, quantified precision, and audio signal is carried out phase shift control;
Amplitude and phase control to every road audio signal different frequency are realized in level multichannel DSP unit, back;
The multichannel power amplifier unit, it connects the output of multichannel DSP unit, and the output of said multichannel power amplifier unit respectively connects a loudspeaker unit, and promotes the loudspeaker unit sounding;
Wherein, described power amplifier unit is a digital power amplifier, makes the reduction of audio signal more true.
Of the present inventionly form speaker system by many controlled sound columns of electronic controller control.Electronic controller utilizes DSP unit and FPGA unit that the audio signal of different controlled sound columns is carried out the Comprehensive Control of frequency, phase place and amplitude, realizes voice directions in the sound column orientation and angle control, and far and nearly assembles adjusting.Controlled sound column then utilizes DSP unit and FPGA unit that its voice directions and angle along the column direction is controlled; And regulate far and near the gathering, therefore, do not need mechanical type to regulate the installation position of sound column itself; The mode of available electron realize to about the sound voice directions, about, far and near adjusting; The three-dimensional electronic that is voice directions is regulated, and can be widely used in the venue of racing, and arbitrarily changes the overlay area of sound through electrical adjustment; Can largely improve speech articulation, save the public address energy, and can simplify installation, accomplish the coordinating and unifying of public address equipment and environment.
Among the present invention; Electronic controller 6 is identical with the Principles of Regulation of 7 pairs of sound of controlled sound column; Principles of Regulation with controlled sound column 7 describe below: controlled sound column 7 utilizes FPGA unit and DSP unit that audio signal is carried out phase shift control; Can be conveniently to the voice directions of sound column 7, promptly the main lobe direction of sound wave and width are regulated.In conjunction with Fig. 5, only with regard to regulating the sound wave main lobe direction, can the audio signal of the sound column of feeding be driven the loudspeaker unit sounding after through the different time delay unit again, change wave surface 11 with the method.With 10 loudspeaker units (being followed successively by from top to bottom 1 to No. 10) is example, and No. 1 unit time-delay is not promptly delayed time for 0t, and No. 10 unit time-delays are the longest, are 9t.The sound wave that the sound wave that the sound wave that No. 1 unit sends sends through the long distance of 9ct, No. 2 unit sends through 8ct, No. 3 unit through 7ct ..., the sound wave that sends with No. 10 unit arrives wave surface simultaneously, spreads apart along wave surface, forms the sound wave main lobe.The deflection angle that can be obtained main lobe by Fig. 5 signal is:
In the formula, c is the velocity of sound, and t and 1 is respectively amount of delay and the distance between adjacent two loudspeaker units.The amount of delay of the same frequency of the audio signal through adjusting each loudspeaker unit 8, as make it have the amount of delay that equates at interval, can form rectilinear wave surface with certain deviation angle; And make it have the amount of delay that does not wait at interval; Can obtain convex arc, difform wave surface such as concave arc forms the effect that focuses on and defocus on the similar optics; So that the width of sound wave main lobe is regulated, realized the control of the sound voice directions of controlled sound column on its column direction easily.In like manner, electronic controller has been realized the control to the sound voice directions in many controlled sound column 7 orientations.
As preferably, can the infrared ray receiver module be set in electronic controller 6, infrared interface 9 is set on its shell, directly utilize remote controller to carry out audio frequency and regulate, very convenient.Certainly, on controlled sound column 7, infrared interface 10 is set simultaneously, receives the conditioning signal of remote controller, carry out the adjusting of voice directions, convenient directly perceived.In addition, should be noted in the discussion above that the sound column of forming the sound column group not necessarily uses the controlled sound column among the present invention, use general sound column product also can reach the sound regulating action on certain specific direction, also should belong to the scope of the present invention's protection.
Certainly; The invention is not limited to above-mentioned execution mode; Those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (2)
1. the three-dimensional adjustable speaker system of a voice directions; It is characterized in that: comprise an electronic controller and many controlled sound columns side by side; Every controlled sound column comprises a plurality of loudspeaker units that straight line forms a line; Thereby said electronic controller can be controlled main lobe direction and width that each bar in said many controlled sound columns is regulated the sound wave that said loudspeaker unit sends, thereby the voice directions of every controlled sound column is carried out vertical and far and near the adjusting, and said electronic controller comprises:
The audio frequency input unit can insert the audio signal of the medium that come from the outside;
The ADC unit, the output that it connects the audio frequency input unit carries out analog-to-digital conversion to audio signal;
Prime DSP unit carries out frequency characteristic compensation to audio signal, and can control audio commonly used;
The FPGA unit, the output that it connects prime DSP unit can carry out the DAB interpolation, improves sample frequency, quantified precision, and audio signal is carried out phase shift control;
Amplitude and phase control to every road audio signal different frequency are realized in level multichannel DSP unit, back;
The output of multichannel DSP unit respectively connects a controlled sound column.
2. the three-dimensional adjustable speaker system of voice directions according to claim 1; It is characterized in that: described many controlled sound columns side by side, every controlled sound column comprises shell, built-in circuit, is arranged on a plurality of loudspeaker units that straight line forms a line on the shell; Said built-in circuit comprises:
The audio frequency input unit can insert the audio signal of the medium that come from the outside;
The ADC unit, the output that it connects the audio frequency input unit carries out analog-to-digital conversion to audio signal;
Prime DSP unit carries out frequency characteristic compensation to audio signal, and can control audio commonly used;
The FPGA unit, the output that it connects prime DSP unit can carry out the DAB interpolation, improves sample frequency, quantified precision, and audio signal is carried out phase shift control;
Amplitude and phase control to every road audio signal different frequency are realized in level multichannel DSP unit, back;
The multichannel power amplifier unit, it connects the output of multichannel DSP unit, and the output of said multichannel power amplifier unit respectively connects a loudspeaker unit;
Wherein, described power amplifier unit is a digital power amplifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910253927 CN101720052B (en) | 2009-11-30 | 2009-11-30 | Speaker system with three-dimensional adjustable voice directions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910253927 CN101720052B (en) | 2009-11-30 | 2009-11-30 | Speaker system with three-dimensional adjustable voice directions |
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| CN101720052A CN101720052A (en) | 2010-06-02 |
| CN101720052B true CN101720052B (en) | 2012-12-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110460937B (en) * | 2019-08-23 | 2021-01-26 | 深圳市神尔科技股份有限公司 | Focusing loudspeaker |
| CN113411720B (en) * | 2021-05-28 | 2023-05-05 | 广州市迪士普音响科技有限公司 | Digital control sound column with multipath beam steering and implementation method thereof |
| CN116489549B (en) * | 2023-06-26 | 2023-09-26 | 深圳市湖山科技有限公司 | Array loudspeaker with controllable phase and frequency bandwidth |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1402956A (en) * | 1999-10-04 | 2003-03-12 | Srs实验室公司 | Acoustic correction apparatus |
| CN1812663A (en) * | 2005-01-28 | 2006-08-02 | 奥特兰诺塞利G.&C.公司 | Loudspeaker enclosure element for forming vertical line array systems adjustable horizontal and vertical directivity |
| CN101203071A (en) * | 2006-11-22 | 2008-06-18 | 松下电器产业株式会社 | Stereophonic sound control apparatus and stereophonic sound control method |
| CN101288338A (en) * | 2003-08-08 | 2008-10-15 | 雅马哈株式会社 | Voice reproducing method and reproducer using line array speaker unit |
| CN201585117U (en) * | 2009-11-30 | 2010-09-15 | 广州市迪士普音响科技有限公司 | Loudspeaker system with adjustable three-dimensional sound production directions |
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- 2009-11-30 CN CN 200910253927 patent/CN101720052B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402956A (en) * | 1999-10-04 | 2003-03-12 | Srs实验室公司 | Acoustic correction apparatus |
| CN101288338A (en) * | 2003-08-08 | 2008-10-15 | 雅马哈株式会社 | Voice reproducing method and reproducer using line array speaker unit |
| CN1812663A (en) * | 2005-01-28 | 2006-08-02 | 奥特兰诺塞利G.&C.公司 | Loudspeaker enclosure element for forming vertical line array systems adjustable horizontal and vertical directivity |
| CN101203071A (en) * | 2006-11-22 | 2008-06-18 | 松下电器产业株式会社 | Stereophonic sound control apparatus and stereophonic sound control method |
| CN201585117U (en) * | 2009-11-30 | 2010-09-15 | 广州市迪士普音响科技有限公司 | Loudspeaker system with adjustable three-dimensional sound production directions |
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