CN208509230U - A kind of sound system - Google Patents
A kind of sound system Download PDFInfo
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- CN208509230U CN208509230U CN201821212944.5U CN201821212944U CN208509230U CN 208509230 U CN208509230 U CN 208509230U CN 201821212944 U CN201821212944 U CN 201821212944U CN 208509230 U CN208509230 U CN 208509230U
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- power amplifier
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- signal conversion
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Abstract
The utility model embodiment is related to sound technique field, discloses a kind of sound system.The sound box system includes: signal processor, signal conversion circuit, N number of power amplifier and N number of loudspeaker；Wherein, N number of power amplifier belongs at least two different types of power amplifiers；Signal processor is connect with signal conversion circuit, and the road the N output end of signal conversion circuit is connect with the input terminal of N number of power amplifier respectively, and the output end of N number of power amplifier is electrically connected with N number of loudspeaker respectively；Wherein, N is the positive integer more than or equal to 2；Signal processor is used for the audio signal that will acquire and carries out scaling down processing, and by the audio signal transmission after scaling down processing to signal conversion circuit；Signal conversion circuit is used to obtain the audio signal after the scaling down processing of signal processor transmission, and corresponding audio band signals are transferred to corresponding power amplifier by the output end of signal conversion circuit.In the utility model, so that different audio sections corresponds to different types of power amplifier, the audio of sound system is improved.
Description
Technical field
The utility model embodiment is related to sound technique field, in particular to a kind of sound system.
Background technique
It is composition most basic in sound system that power amplifier, which is also referred to as " power amplifier ", its main task is will to come from signal
The ultra-weak electronic signal in source is amplified to be made a sound with drive the speaker, and the work of power amplifier is not hard in a set of good sound system
Can not have.Due to the consideration of power, impedance, the distortion factor to sound system etc., and different power amplifiers is in internal signal processing, route
Design and producing technique is also different, and therefore, power amplifier type used in traditional sound system is relatively simple, such as uses D class function
The sound system of rate amplifier or the sound system for using AB power-like amplifier.
At least there are the following problems in the prior art: the existing sound system using single type power amplifier for inventor's discovery
In, the sound system of D class power amplifier is such as used, the efficiency of most of sound equipment can reach 90%, can be in small size, that is, cooling fin volume
Heavy load is pushed when corresponding reduction, that is, can accomplish high-power output, it is of less demanding to power source performance, and low-frequency range exports
It is distorted small；But use the sound system of D class power amplifier poor in medium-high frequency section performance, it is distorted higher.Use the sound of AB class power amplifier
Acoustic system, it is good that audio medium-high frequency is distorted special efficacy；Medium-high frequency distortion it is small, but use AB class power amplifier sound system efficiency compared with
It is low, it is high-power lower higher to power requirement, because efficiency reasons fever is larger, larger area cooling fin is needed to radiate it,
Device cost is increased, the time that system needs to debug is longer.
Utility model content
The utility model embodiment is designed to provide a kind of sound system, so that different audio sections is corresponding different
The power amplifier of type improves the audio of sound system.
In order to solve the above technical problems, the embodiments of the present invention provides a kind of sound system, comprising: at signal
Manage device, signal conversion circuit, N number of power amplifier and the N number of loudspeaker being correspondingly connected with N number of power amplifier；Wherein, N number of power amplifier belong to
Few two distinct types of power amplifier；
Signal processor is connect with signal conversion circuit, and the road the N output end of signal conversion circuit is defeated with N number of power amplifier respectively
Enter end connection, the output end of N number of power amplifier is electrically connected with N number of loudspeaker respectively；Wherein, N is the positive integer more than or equal to 2；
Signal processor is used for the audio signal that will acquire and carries out scaling down processing, and by the audio signal after scaling down processing
It is transferred to signal conversion circuit；
Signal conversion circuit is used to obtain the audio signal after the scaling down processing of signal processor transmission, by corresponding audio
Segment signal is transferred to corresponding power amplifier by the output end of signal conversion circuit.
In terms of existing technologies, signal processor divides audio signal to the utility model embodiment, will
Corresponding audio band signals are transferred to corresponding power amplifier, and the power amplifier in sound system belongs to the power amplifier of at least two types,
It can guarantee that each audio section corresponds to suitable power amplifier using the sound system of different type power amplifier, avoid being used only a type of
In the problem that the audio difference power consumption of part audio section is high when power amplifier, so that corresponding power amplifier power amplifier in determining audio section work
The efficiency of circuit is higher and power amplifier audio is good, to promote the performance of sound system, and reduces the power consumption of sound system, uses
Family experience when using the sound system is good.
In addition, if sound system includes low-frequency power amplifier, woofer, medium-high frequency power amplifier and middle/high frequency loudspeaker；Signal
The low frequency output of conversion circuit and the input terminal of low-frequency power amplifier connect, and the output end of low-frequency power amplifier is connect with woofer,
The medium-high frequency output end of signal conversion circuit is connect with the input terminal of medium-high frequency power amplifier, the output end and medium-high frequency of medium-high frequency power amplifier
Loudspeaker electrical connection；Signal conversion circuit is specifically used for, and the signal of low frequency audio section is transferred to low-frequency power amplifier, by medium-high frequency sound
The signal of frequency range is transferred to medium-high frequency power amplifier.
In the embodiment, low-frequency range and medium-high frequency section are separated, the power amplifier of low frequency is separately provided, can be improved low-frequency range
Audio, further promote user experience.
In addition, medium-high frequency power amplifier includes intermediate frequency power amplifier and radio frequency power amplifier, middle/high frequency loudspeaker includes mid frequency ludspeaker and height
Band loudspeaker, the medium-high frequency output end of signal conversion circuit include medium frequency output end and high frequency output end；Signal conversion circuit
Medium frequency output end is connect with the input terminal of intermediate frequency power amplifier, and the output end of intermediate frequency power amplifier is electrically connected with mid frequency ludspeaker；Signal conversion
The high frequency output end of circuit and the input terminal of radio frequency power amplifier connect, and the output end of radio frequency power amplifier is electrically connected with tweeter；Letter
Number conversion circuit is specifically used for, and the signal of intermediate frequency audio section is transferred to intermediate frequency power amplifier, the signal of high frequency audio frequency range is transferred to
Radio frequency power amplifier.
In the embodiment, high frequency signal is also divided, corresponding audio section is transferred to corresponding power amplifier,
The performance of sound system is further improved, user experience is promoted.
In addition, sound system further includes filter circuit；Filter circuit is serially connected between low-frequency power amplifier and woofer.
In the embodiment, filter circuit is set between low-frequency power amplifier and woofer, bass frequency range is avoided to pass through
Power amplifier and there is noise, improve the performance of sound system, further promote user experience.
In addition, type is that power amplifier is divided into different type according to electrically conducting manner, comprising: A class power amplifier, B class power amplifier, AB class function
It puts and D class power amplifier；Wherein, low-frequency power amplifier is D class power amplifier, and medium-high frequency power amplifier is AB class power amplifier.
In addition, sound system further includes micro-control unit；Micro-control unit is connect with signal processor.
In addition, signal conversion circuit includes the first signal conversion unit and second signal converting unit；
First signal conversion unit is connect by low frequency output with low-frequency power amplifier；
Second signal converting unit is connect by medium frequency output end with intermediate frequency power amplifier, and second signal converting unit passes through high frequency
Output end is connect with radio frequency power amplifier.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the structure chart of sound system in the utility model first embodiment；
Fig. 2 is the structure chart of another sound system in the utility model first embodiment；
Fig. 3 is the structure chart of another sound system in the utility model first embodiment；
Fig. 4 is the structural schematic diagram of sound system in the utility model second embodiment.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
Each embodiment of utility model is explained in detail.However, it will be understood by those skilled in the art that practical at this
In novel each embodiment, in order to make the reader understand this application better, many technical details are proposed.But even if do not have
It is claimed that the application also may be implemented in these technical details and various changes and modifications based on the following respective embodiments
Technical solution.
The first embodiment of the utility model is related to a kind of sound system.Specific structure is as shown in Figure 1.It include: signal
Processor 10, signal conversion circuit 20, the N number of loudspeaking N number of power amplifier (30 and 40 in Fig. 1) and be correspondingly connected with N number of power amplifier
Device (31 in Fig. 1 and 41)；Wherein, N number of power amplifier belongs at least two different types of power amplifiers.
Wherein, N is positive integer more than or equal to 2, in Fig. 1 by taking two power amplifiers as an example, is merely illustrative, does not constitute
Limitations of the present invention.
Specifically, signal processor 10 is connect with signal conversion circuit 20, the two-way output end point of signal conversion circuit 20
It is not connect with the input terminal of two power amplifiers 30 and 40, the output end of two power amplifiers 30 and 40 is electrically connected with two loudspeakers respectively；
Wherein, signal processor 10 is used for the audio signal that will acquire and carries out scaling down processing, and by the audio signal after scaling down processing
It is transferred to signal conversion circuit 20；Signal conversion circuit 20 is used to obtain the audio letter after the scaling down processing of signal processor transmission
Number, corresponding audio band signals are transferred to corresponding power amplifier (30 and 40) by the output end of signal conversion circuit.
It should be noted that signal processor, which carries out frequency dividing to the audio signal got, is incited somebody to action by the setting of part-frequency point
Audio signal is divided, and signal conversion circuit is after getting the audio signal after frequency dividing, according to the output phase in each channel
Position control exports the signal of not audio segments.It is merely illustrative herein, specific scaling-down process is herein with no restrictions.
Specifically, the power amplifier in sound system is raised for amplifying the small-signal for corresponding to audio section with driving
Sound device makes a sound.The different types of optimal working frequency range of power amplifier is different, if type is to divide according to electrically conducting manner
Arrive, then power amplifier type includes A class power amplifier, B class power amplifier, AB class power amplifier and D class power amplifier etc., it should be noted that be only herein because
Electrically conducting manner determines different types of power amplifier, can specifically be classified with other modes to power amplifier, e.g., according to power tube
Type, according to the quantity of power amplifier element, according to function etc., be merely illustrative of, be not specifically limited herein.
Specifically, sound box system includes low-frequency power amplifier, woofer, medium-high frequency if only separating low frequency signal
Power amplifier and middle/high frequency loudspeaker；Low-frequency power amplifier corresponds to the first power amplifier 30 as shown in figure 1, woofer corresponds to the first loudspeaker 31,
Second power amplifier 40 in medium-high frequency power amplifier corresponding diagram, the second loudspeaker 41 in middle/high frequency loudspeaker corresponding diagram, signal conversion circuit
Low frequency output is connect with the input terminal of low-frequency power amplifier 30, and the output end of low-frequency power amplifier 30 is connect with woofer 31, signal
The medium-high frequency output end of conversion circuit is connect with the input terminal of medium-high frequency power amplifier 40, the output end and medium-high frequency of medium-high frequency power amplifier 40
Loudspeaker 41 is electrically connected；Signal conversion circuit is specifically used for, and the signal of low frequency audio section is transferred to low-frequency power amplifier 30, by middle height
The signal of frequency domain audio section is transferred to medium-high frequency power amplifier 40.
Wherein, if medium-high frequency segment signal is divided, which is three frequency division system, structure such as Fig. 2 institute
Show, wherein medium-high frequency power amplifier includes intermediate frequency power amplifier 401 and radio frequency power amplifier 402, and middle/high frequency loudspeaker includes mid frequency ludspeaker 411
With tweeter 412, the medium-high frequency output end of signal conversion circuit includes medium frequency output end and high frequency output end；Signal conversion
The medium frequency output end of circuit is connect with the input terminal of intermediate frequency power amplifier 401, the output end and mid frequency ludspeaker 411 of intermediate frequency power amplifier 401
Electrical connection；The high frequency output end of signal conversion circuit is connect with the input terminal of radio frequency power amplifier 402, the output end of radio frequency power amplifier 402
It is electrically connected with tweeter 412；Signal conversion circuit is specifically used for, and the signal of intermediate frequency audio section is transferred to intermediate frequency power amplifier
401, the signal of high frequency audio frequency range is transferred to radio frequency power amplifier 402.
Specifically, when audio signal is divided into low-frequency range and medium-high frequency section, in the concrete type of power amplifier classification, D class
Amplifier can be used as the power amplifier of bass frequency range because of its bass frequency range better performances, and AB class power amplifier is smaller in full frequency band harmonic distortion,
Whole subjectivity hearing effect is good, can be used as the power amplifier of medium-high frequency section.Such as, above-mentioned low-frequency power amplifier 30 is correspondingly arranged as D class power amplifier, in
Radio frequency power amplifier 40 is set as AB class power amplifier.Herein by way of example only, it is not particularly limited.Audio signal is being subjected to three frequency division
When, low-frequency power amplifier 30 may be configured as D class power amplifier, and intermediate frequency power amplifier 401 may be configured as in A class power amplifier, B class power amplifier or AB class power amplifier
It is a kind of, wherein above-mentioned low-band signal corresponds to 20Hz-300Hz, and intermediate frequency segment signal corresponds to 300Hz-3k Hz, high frequency band signal
Corresponding 3kHz-30kHz.The division of above-mentioned specific power amplifier type and audio section to the setting of a audio section is exemplary theory
It is bright, it is not particularly limited.
It should be noted that in the above-mentioned power amplifier type according to electrically conducting manner classification further include: G class power amplifier, H class power amplifier, S
Class power amplifier and XD class power amplifier etc., the power amplifier type being arranged in specific sound system is with no restrictions.
Specifically, the signal after power amplifier of the low-band signal in power amplifier is amplified, in order to avoid low-frequency range letter
Number there is noise, a filter circuit is set after low-band signal is by low-frequency power amplifier, e.g., sound system further includes filtering
Circuit 33；Filter circuit 33 is serially connected between low-frequency power amplifier and woofer.As shown in figure 3, the filter circuit 33 includes electricity
Sensing unit and capacity cell, the specific structure of filter circuit 33 and connection relationship in the acoustic system are as shown in Figure 3.The filtering
The first end of the inductance element of circuit 33 is that the output end of signal input part and low-frequency power amplifier connects, the second end of inductance element with
The first end of capacity cell is connected to the output end of filter circuit, the second end ground connection of capacity cell.Herein to filter circuit
Specific structure be merely illustrative, specifically suitable filter circuit can be set according to practical sound system, not limit herein
System.
It is noted that filter circuit is used to improve the audio of the audio section, in high frequency band signal or intermediate frequency segment signal
Also filter circuit can be set in circuit, specifically with no restrictions.
In terms of existing technologies, signal processor divides audio signal, and corresponding audio band signals are passed
It is defeated to arrive corresponding power amplifier, and the power amplifier in sound system belongs to the power amplifier of at least two types, using different type power amplifier
Sound system can guarantee that each audio section corresponds to suitable power amplifier, in part audio section when avoiding that a type of power amplifier is used only
The high problem of audio difference power consumption so that the efficiency of corresponding power amplifier power amplifier in determining audio section work is higher and function
Playback is imitated, to promote the performance of sound system, and reduces the power consumption of sound system, and user is made to use the sound system
When experience it is good.
The second embodiment of the utility model is related to a kind of sound system.Second embodiment is big with first embodiment
It causes identical, is in place of the main distinction: in the utility model second embodiment, specifically illustrating signal conversion circuit conversion
The specific implementation of signal.
The structure of sound system is as shown in Figure 4 in present embodiment, wherein and sound system further includes micro-control unit 50,
It include the first signal conversion unit 21 and second signal converting unit 22 in signal conversion circuit 20.
Specifically, the first signal conversion unit 21 is connect by low frequency output with low-frequency power amplifier 30；Second signal turns
It changes unit 22 to connect by medium frequency output end with intermediate frequency power amplifier 401, second signal converting unit 22 passes through high frequency output end and height
Frequency power amplifier 402 connects.
It should be noted that being digital audio in the sound box system, then signal processor is for counting audio signal
Word processing is used for if signal processor is set as DSP (Digital Signal Processor, Digital Signal Processing) chip
Pass through the frequency dividing of part-frequency point being provided with to audio signal, wherein micro-control unit (Microcontroller Unit；
MCU the audio signal transmission that) will acquire will be transferred to signal conversion circuit after audio signal scaling down processing to DSP, DSP,
Specifically, signal conversion circuit gets different sections of audio signal according to part-frequency point and exports the signal of not audio segments, e.g.,
Signal conversion circuit is set as DAC (Digital to analog converter, digital analog converter), for converting simultaneously
Output audio signal.
Specifically, being provided with two DAC in sound system in the present embodiment, the first DAC output is low frequency
Segment signal, the 2nd DAC output is medium-high frequency segment signal, if there are three signal paths in DAC, it is possible to use a DAC is
Can, it is herein a kind of illustrative explanation to the explanation of the quantity of the DAC of setting, is not particularly limited.
It is noted that each circuit unit involved in present embodiment is logic unit, in practical application
In, a logic unit can be a physical unit, be also possible to a part of a physical unit, can also be with multiple objects
The combination for managing unit is realized.In addition, in order to protrude the innovative part of the utility model, it will not be with solution in present embodiment
The less close unit of the technical issues of the utility model is proposed relationship introduces, but this does not indicate in present embodiment and does not deposit
In other units.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And range.
Claims (7)
1. a kind of sound system characterized by comprising signal processor, signal conversion circuit, N number of power amplifier and with it is described N number of
N number of loudspeaker that power amplifier is correspondingly connected with；Wherein, N number of power amplifier belongs at least two different types of power amplifiers；
The signal processor is connect with the signal conversion circuit, the road the N output end of the signal conversion circuit respectively with institute
The input terminal connection of N number of power amplifier is stated, the output end of N number of power amplifier is electrically connected with N number of loudspeaker respectively；Wherein, N is big
In the positive integer for being equal to 2；
The signal processor is used for the audio signal that will acquire and carries out scaling down processing, and by the audio after scaling down processing
Signal is transferred to the signal conversion circuit；
The signal conversion circuit is used to obtain the audio signal after the scaling down processing of the signal processor transmission, will be right
The audio band signals answered are transferred to the corresponding power amplifier by the output end of the signal conversion circuit.
2. sound system according to claim 1, which is characterized in that if the sound system includes low-frequency power amplifier, low frequency
Loudspeaker, medium-high frequency power amplifier and middle/high frequency loudspeaker；
The low frequency output of the signal conversion circuit is connect with the input terminal of the low-frequency power amplifier, the output of the low-frequency power amplifier
End is connect with the woofer, the input terminal of the medium-high frequency output end of the signal conversion circuit and the medium-high frequency power amplifier
Connection, the output end of the medium-high frequency power amplifier are electrically connected with the middle/high frequency loudspeaker；
The signal conversion circuit is specifically used for, and the signal of low frequency audio section is transferred to the low-frequency power amplifier, by medium-high frequency sound
The signal of frequency range is transferred to the medium-high frequency power amplifier.
3. sound system according to claim 2, which is characterized in that the medium-high frequency power amplifier includes intermediate frequency power amplifier and high frequency
Power amplifier, the middle/high frequency loudspeaker include mid frequency ludspeaker and tweeter, the medium-high frequency output of the signal conversion circuit
End includes medium frequency output end and high frequency output end；
The medium frequency output end of the signal conversion circuit is connect with the input terminal of the intermediate frequency power amplifier, the output of the intermediate frequency power amplifier
End is electrically connected with the mid frequency ludspeaker；The high frequency output end of the signal conversion circuit and the input terminal of the radio frequency power amplifier connect
It connects, the output end of the radio frequency power amplifier is electrically connected with the tweeter；
The signal conversion circuit is specifically used for, and the signal of intermediate frequency audio section is transferred to the intermediate frequency power amplifier, by high-frequency audio
The signal of section is transferred to radio frequency power amplifier.
4. sound system according to claim 2 or 3, which is characterized in that the sound system further includes filter circuit；
The filter circuit is serially connected between the low-frequency power amplifier and the woofer.
5. sound system according to claim 2 or 3, which is characterized in that the type is according to electrically conducting manner by power amplifier
It is divided into different type, comprising: A class power amplifier, B class power amplifier, AB class power amplifier and D class power amplifier；
Wherein, the low-frequency power amplifier is D class power amplifier, and the medium-high frequency power amplifier is AB class power amplifier.
6. sound system according to any one of claim 1-3, which is characterized in that the sound system further includes micro-control
Unit processed；The micro-control unit is connect with the signal processor.
7. sound system according to claim 3, which is characterized in that the signal conversion circuit is converted including the first signal
Unit and second signal converting unit；
First signal conversion unit is connect by the low frequency output with the low-frequency power amplifier；
The second signal converting unit is connect by the medium frequency output end with the intermediate frequency power amplifier, the second signal conversion
Unit is connect by the high frequency output end with the radio frequency power amplifier.
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| CN201821212944.5U CN208509230U (en) | 2018-07-27 | 2018-07-27 | A kind of sound system |
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| CN201821212944.5U CN208509230U (en) | 2018-07-27 | 2018-07-27 | A kind of sound system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810730A (en) * | 2018-07-27 | 2018-11-13 | 广州酷狗计算机科技有限公司 | A kind of sound system |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810730A (en) * | 2018-07-27 | 2018-11-13 | 广州酷狗计算机科技有限公司 | A kind of sound system |
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