CN210579208U - Intelligent loudspeaker - Google Patents
Intelligent loudspeaker Download PDFInfo
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- CN210579208U CN210579208U CN201921276907.5U CN201921276907U CN210579208U CN 210579208 U CN210579208 U CN 210579208U CN 201921276907 U CN201921276907 U CN 201921276907U CN 210579208 U CN210579208 U CN 210579208U
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Abstract
The utility model belongs to the speaker field especially relates to the novel intelligent speaker that its volume size can automatically adapt to the ambient noise fluctuation. Intelligent speaker, it includes the power supply module who supplies power for each unit for to the controllable amplifier of audio frequency voltage of the controllable enlargies of audio frequency voltage, the controllable amplifier of audio frequency voltage has power amplifier, its characterized in that: the loudspeaker comprises a loudspeaker driving voice coil and a noise analysis processing assembly, wherein the loudspeaker driving voice coil is used for outputting audio and converting environmental noise into an electric signal, the noise analysis processing assembly is connected with the loudspeaker driving voice coil and outputs a noise voltage signal to an audio voltage controllable amplifier, and the audio voltage controllable amplifier adjusts the amplification factor of audio voltage according to the noise voltage signal, so that the volume of the loudspeaker is automatically adjusted along with the change of the environmental noise.
Description
Technical Field
The utility model belongs to the speaker field especially relates to the novel intelligent speaker that its volume size can automatically adapt to the ambient noise fluctuation.
Background
At present, a loudspeaker at home and abroad is only used as a device for converting an electric signal into an acoustic signal, and has a single function.
Because of the unicity of the function of the existing loudspeaker, in the environment with large noise fluctuation in various industries, the output volume of the loudspeaker can not be automatically, real-timely and synchronously adjusted, so that the broadcasting/calling effect is greatly influenced: in the case of a speaker outputting a fixed volume, when ambient noise increases, the broadcast/call sound may be not heard clearly; when the noise is small, the broadcast/call sound causes a large disturbance to the peripheral space. For this reason, intelligent innovative improvements to conventional speakers are needed.
Disclosure of Invention
Not enough to prior art, the utility model provides a speaker that anti-noise performance is high. Intelligent speaker have the function that automatic adaptation environmental noise fluctuates, satisfy the operation requirement of guaranteeing the signal/noise ratio under noise fluctuation environmental condition.
The technical scheme of the utility model as follows:
intelligent speaker, it includes the power supply module who supplies power for each unit for to the controllable amplifier of audio frequency voltage of the controllable enlargies of audio frequency voltage, the controllable amplifier of audio frequency voltage has power amplifier, its characterized in that: the loudspeaker comprises a loudspeaker driving voice coil and a noise analysis processing assembly, wherein the loudspeaker driving voice coil is used for outputting audio and converting environmental noise into an electric signal, the noise analysis processing assembly is connected with the loudspeaker driving voice coil and outputs a noise voltage signal to an audio voltage controllable amplifier, and the audio voltage controllable amplifier adjusts the amplification factor of audio voltage according to the noise voltage signal, so that the volume of the loudspeaker is automatically adjusted along with the change of the environmental noise.
Furthermore, the noise analysis processing assembly comprises a signal/noise gate current device for identifying and separating the audio signal and the noise signal from the signal provided by the loudspeaker driving voice coil, the signal/noise gate current device is connected with a noise processor, the noise processor processes the complex noise signal into control voltage, the noise processor is connected with a control voltage amplifier, the control voltage amplifier amplifies the control voltage output by the noise processor, and finally the control voltage amplifier transmits the amplified voltage to the audio voltage controllable amplifier.
Furthermore, the audio voltage controllable amplifier is connected with a broadcast/call transmitter which converts the sound signal into a weak audio electric signal.
Furthermore, the power amplifier amplifies the input audio voltage without distortion.
Furthermore, the signal/noise grid current device comprises a first emitter follower for receiving a signal from a loudspeaker driving voice coil and a second emitter follower for receiving a signal from an audio voltage controllable amplifier, wherein the second emitter follower is connected with an inverting amplifier, the inverting amplifier and the first emitter follower are connected with a differential amplifier, and the differential amplifier outputs a noise signal to a noise processor.
Furthermore, the noise processor comprises a low-pass filter circuit connected with the signal/noise grid current device, the low-pass filter circuit is connected with an amplitude limiting circuit, the amplitude limiting circuit is connected with an operational amplifier integrating circuit, and the operational amplifier integrating circuit is connected with the control voltage amplifier.
The audio voltage controllable amplifier comprises an operational amplifier circuit used for receiving a noise voltage signal from the control voltage amplifier and receiving a preset allowable noise voltage signal from the power supply component, the operational amplifier circuit is connected with the audio voltage amplifier, and the audio voltage amplifier adjusts the multiple of the audio voltage amplifier according to the gain control voltage of the operational amplifier circuit.
To sum up, the utility model discloses following beneficial effect has:
1. the utility model discloses a speaker drive voice coil loudspeaker voice coil has the function that can also convert the ambient noise to the signal of telecommunication when exporting the audio signal function, the signal of telecommunication that noise analysis processing subassembly produced speaker drive voice coil loudspeaker voice coil is separated and is analyzed and finally exports a noise signal of telecommunication and give the controllable amplifier of audio voltage, the controllable amplifier of audio voltage adjusts the magnification to audio signal according to the noise signal of telecommunication to realized adjusting the purpose of speaker output volume size according to ambient noise.
2. The utility model discloses satisfied and ensured broadcast/calling effect in the noise fluctuation environment, and minimize the requirement that causes great interference to the surrounding space when the noise.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of a signal/noise gate current device;
fig. 3 is a schematic diagram of a noise processor;
FIG. 4 is a schematic diagram of the structure of an audio voltage controllable amplifier;
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, the smart speaker includes a power supply module 1 for supplying power to each unit, and intensively supplies power to relevant parts of the components; an audio frequency voltage controllable amplifier 2 for audio frequency voltage controllable amplification, audio frequency voltage controllable amplifier 2 has power amplifier 3, its characterized in that: still including being used for the output audio frequency and can converting the speaker drive voice coil 4 of signal of telecommunication into with ambient noise to and the noise analysis and processing subassembly 5 of being connected with speaker drive voice coil 4, noise analysis and processing subassembly 5 output noise voltage signal gives audio voltage controllable amplifier 2, and audio voltage controllable amplifier 2 is according to the amplification factor of noise voltage signal adjustment to audio voltage, realizes the speaker volume along with ambient noise's change and automatic adjustment.
The loudspeaker drive voice coil that this embodiment is right has dual function, function one: converting the broadcast/call electrical signal into an acoustic signal; and a second function: collecting signals of environmental noise to form weak noise electric signals; the specific process is as follows: external environment noise passes through the loudspeaker cone, so that the loudspeaker driving voice coil performs magnetic line cutting motion in the loudspeaker fixed magnetic field, and the driving voice coil of the loudspeaker can generate noise current output in the motion process of the loudspeaker driving voice coil; the detection of the environmental noise is completed when broadcasting or calling, the noise electric signal generated by detection is processed by the noise analysis processing assembly to obtain a noise voltage signal, the noise voltage signal is fed back to the audio voltage controllable amplifier, and the audio voltage controllable amplifier adjusts the amplification factor of the broadcasting/calling electric signal according to the size of the noise voltage signal, so that the adjustment of the volume of the sound signal output by the loudspeaker is realized.
Further, the noise analyzing and processing assembly 5 includes a signal/noise barrier circulator 50 for identifying and separating the audio signal and the noise signal from each other for the signal provided by the speaker driving voice coil, the signal/noise barrier circulator 50 is connected to a noise processor 51, the noise processor 51 processes the complex noise signal into a control voltage, the noise processor 51 is connected to a control voltage amplifier 52, the control voltage amplifier amplifies the control voltage output by the noise processor, and finally the control voltage amplifier transmits the amplified voltage to an audio voltage controllable amplifier, the signal provided by the speaker driving voice coil and the audio signal of the self-output sound signal must be separated to be accurately adjusted, so that the signal/noise barrier circulator is used for separating the noise signal and the audio signal, purifying the electric signal generated by the loudspeaker driving voice coil; the obtained noise electric signal enters a noise processor, the noise processing is used for processing the noise electric signal and converting the noise electric signal into control voltage, and the control voltage output by the noise processor is small, so that the control voltage needs to be amplified by a control voltage amplifier and finally transmitted to an audio voltage controllable amplifier.
The audio voltage controllable amplifier 2 comprises an operational amplifier circuit 20 for receiving a noise voltage signal from a control voltage amplifier and receiving a preset allowable noise voltage signal from a power supply assembly, the operational amplifier circuit 20 is connected with an audio voltage amplifier 21, and the audio voltage amplifier adjusts the multiple of the audio voltage amplifier according to the gain control voltage of the operational amplifier circuit; the following description of the principle of the audio voltage controllable amplifier 2 is provided:
the principle is as follows: the operational amplifier circuit receives a voltage signal Vs from the control voltage amplifier and a preset reference voltage Vr provided by the power supply component, wherein the reference voltage Vr is a preset allowable noise voltage; when the voltage signal Vs is smaller than the set reference voltage Vr, the operational amplifier circuit does not output the gain control voltage Vc, and the audio voltage amplifier amplifies according to the normal gain.
The audio voltage controllable amplifier 2 is connected with a broadcast/call transmitter 6 which converts the sound signal into a weak audio electric signal, and converts the sound signal into a weak electric signal.
The power amplifier amplifies the input audio voltage without distortion.
Further, as shown in fig. 2, the signal/noise thyristor 50 includes a first emitter follower for receiving a signal from the speaker driving voice coil and a second emitter follower for receiving a signal from the audio voltage controlled amplifier, the second emitter follower is connected to an inverting amplifier, the inverting amplifier and the first emitter follower are connected to a differential amplifier, the differential amplifier outputs a noise signal to a noise processor, and the principle of the signal/noise thyristor is explained here: the first emitter follower receives signals from the loudspeaker driving voice coil, wherein the signals comprise external audio signals and noise signals, the second emitter follower receives the audio signals from the audio voltage controllable amplifier, the second emitter follower transmits the audio signals to the inverting amplifier for inverting, and then the noise signals collected by the loudspeaker driving voice coil are obtained in the differential amplifier by utilizing a positive and negative signal conjugate offset principle.
Further, as shown in fig. 3, the noise processor 51 includes a low pass filter circuit connected to the signal/noise gate current transformer, the low pass filter circuit is connected to a limiter circuit, the limiter circuit is connected to an operational amplifier integrating circuit, the operational amplifier integrating circuit is connected to a control voltage amplifier, and the principle of the noise processor is explained here: the low-pass filter circuit realizes the function of outputting low-frequency noise by connecting a capacitor in parallel on a collector resistor of the triode common-emitter amplifying circuit, changes the resistance value of the collector resistor and the capacity of the capacitor, and achieves the aim of cutting off high-frequency noise above 5000 Hz.
To sum up, the utility model discloses following beneficial effect has:
1. the utility model discloses a speaker drive voice coil loudspeaker voice coil has the function that can also convert the ambient noise to the signal of telecommunication when exporting the audio signal function, the signal of telecommunication that noise analysis processing subassembly produced speaker drive voice coil loudspeaker voice coil is separated and is analyzed and finally exports a noise signal of telecommunication and give the controllable amplifier of audio voltage, the controllable amplifier of audio voltage adjusts the magnification to audio signal according to the noise signal of telecommunication to realized adjusting the purpose of speaker output volume size according to ambient noise.
2. The utility model discloses satisfied and ensured broadcast/calling effect in the noise fluctuation environment, and minimize the requirement that causes great interference to the surrounding space when the noise.
Claims (7)
1. Intelligent speaker, it includes the power supply module who supplies power for each unit for to the controllable amplifier of audio frequency voltage of the controllable enlargies of audio frequency voltage, the controllable amplifier of audio frequency voltage has power amplifier, its characterized in that: the loudspeaker comprises a loudspeaker driving voice coil and a noise analysis processing assembly, wherein the loudspeaker driving voice coil is used for outputting audio and converting environmental noise into an electric signal, the noise analysis processing assembly is connected with the loudspeaker driving voice coil and outputs a noise voltage signal to an audio voltage controllable amplifier, and the audio voltage controllable amplifier adjusts the amplification factor of audio voltage according to the noise voltage signal, so that the volume of the loudspeaker is automatically adjusted along with the change of the environmental noise.
2. The smart speaker of claim 1, wherein: the noise analysis processing assembly comprises a signal/noise grating current device which is used for identifying and separating an audio signal and a noise signal from a signal provided by a loudspeaker driving voice coil, the signal/noise grating current device is connected with a noise processor, the noise processor processes a complex noise signal into a control voltage, the noise processor is connected with a control voltage amplifier, the control voltage amplifier amplifies the control voltage output by the noise processor, and finally the control voltage amplifier transmits the amplified voltage to an audio voltage controllable amplifier.
3. The smart speaker of claim 1, wherein: the audio frequency voltage controllable amplifier is connected with a broadcast/call transmitter which converts the sound signal into a weak audio frequency electric signal.
4. The smart speaker of claim 1, wherein: the power amplifier amplifies the input audio voltage without distortion.
5. The smart speaker of claim 2, wherein: the signal/noise grating current device comprises a first emitter follower used for receiving signals from a loudspeaker driving voice coil and a second emitter follower used for receiving signals from an audio voltage controllable amplifier, the second emitter follower is connected with an inverting amplifier, the inverting amplifier and the first emitter follower are connected with a differential amplifier, and the differential amplifier outputs noise signals to a noise processor.
6. The smart speaker of claim 2, wherein: the noise processor comprises a low-pass filter circuit connected with the signal/noise grid current device, the low-pass filter circuit is connected with an amplitude limiting circuit, the amplitude limiting circuit is connected with an operational amplifier integrating circuit, and the operational amplifier integrating circuit is connected with the control voltage amplifier.
7. The smart speaker of claim 1, wherein: the audio voltage controllable amplifier comprises an operational amplifier circuit which is used for receiving a noise voltage signal from the control voltage amplifier and receiving a preset allowable noise voltage signal from the power supply assembly, the operational amplifier circuit is connected with the audio voltage amplifier, and the audio voltage amplifier adjusts the multiple of the audio voltage amplifier according to the gain control voltage of the operational amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276907.5U CN210579208U (en) | 2019-08-07 | 2019-08-07 | Intelligent loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921276907.5U CN210579208U (en) | 2019-08-07 | 2019-08-07 | Intelligent loudspeaker |
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| CN210579208U true CN210579208U (en) | 2020-05-19 |
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| CN201921276907.5U Active CN210579208U (en) | 2019-08-07 | 2019-08-07 | Intelligent loudspeaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446146A (en) * | 2019-08-07 | 2019-11-12 | 常州科先达通讯技术有限公司 | Smart speakers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446146A (en) * | 2019-08-07 | 2019-11-12 | 常州科先达通讯技术有限公司 | Smart speakers |
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