CN208905198U - Electronic equipment with full isolation Dolby circuit - Google Patents
Electronic equipment with full isolation Dolby circuit Download PDFInfo
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- CN208905198U CN208905198U CN201821621981.1U CN201821621981U CN208905198U CN 208905198 U CN208905198 U CN 208905198U CN 201821621981 U CN201821621981 U CN 201821621981U CN 208905198 U CN208905198 U CN 208905198U
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Abstract
The utility model discloses a kind of electronic equipments with full isolation Dolby circuit, including microphone voice module and product main functional modules；The microphone voice module includes microphone array, speech processing module, analog-to-digital conversion module and microprocessor；The microphone array is connected with the analog-to-digital conversion module；The analog-to-digital conversion module is connected with the speech processing module；The microprocessor is connected with the host computer of the product main functional modules；Wherein: the microphone voice module further includes the first isolation module, and the output end of the speech processing module is connected by first isolation module with the microprocessor.The electronic equipment with full isolation Dolby circuit provided by the utility model, the noise jamming coupling path for having cut off other circuits of microphone voice module and external major product functional module by the way that the first isolation module is arranged, to providing good working environment inside microphone voice module, and then improve the reliability of internal work.
Description
Technical field
The utility model relates to the circuit connection technologies of voice module more particularly to a kind of with full isolation Dolby circuit
Electronic equipment.
Background technique
With the deep development of artificial intelligence field, AI hardware is more and more paid attention to.Machine can be a visitor at a meeting, gives
Machine talk is energized, and becomes the important topic of artificial intelligence field research, therefore many technical fields all develop voice module.
The prior art does voice and energizes when designing, can branch scape carry out solving practical problems, need more hardware development.No
It is interconnected with hardware adaptor, is constantly present due to earth potential, when being directly connected to, also brings along common mode and DM EMI, be difficult
It is effectively suppressed.Intelligent sound hardware sometimes must the sound that plays of acquisition system itself, do echo cancellation process, also can
Unknown noise source is introduced to voice module.So existing voice hardware mostly uses inductance, magnetic bead, common mode inductance, electrolysis electricity
Hold with filtering devices such as ceramic condensers and build filter circuit, circuit is more complicated, and cost also can be higher, and effect is also required to through excessive
Secondary actual test verifying, thus carrys out various inconvenience to calibration tape.
Utility model content
The purpose of the utility model is to provide a kind of electronic equipments with full isolation Dolby circuit, to solve the prior art
The problems in, promote the reliability of work.
The utility model provides a kind of electronic equipment with full isolation Dolby circuit, including microphone voice module and
Product main functional modules；
The microphone voice module includes microphone array, speech processing module and analog-to-digital conversion module；
The microphone array is connected with the analog-to-digital conversion module；
The analog-to-digital conversion module is connected with the speech processing module；
Wherein:
The microphone voice module further includes the first isolation module, and first isolation module is arranged at the voice
It manages between the output end of module and the host computer of the product main functional modules.
Preferably, first isolation module is low-frequency transformer.
Preferably, the microphone voice module further includes the second isolation module, and the analog-to-digital conversion module passes through described
Second isolation module is connected with the power amplifier module of the product main functional modules.
Preferably, second isolation module is low-frequency transformer.
Preferably, the microphone voice module further includes power supply, for the speech processing module and the modulus
Conversion module power supply.
Preferably, the power supply is isolated power supply.
Preferably, the microphone array is classified as multichannel microphone array.
The electronic equipment with full isolation Dolby circuit provided by the utility model, is cut off by the first isolation module of setting
The noise jamming coupling path of microphone voice module and outside manufacture main functional modules circuit, in microphone voice module
Portion provides good working environment, and then improves the reliability of internal work.
Further, microphone voice module and external product master have further been cut off by the way that the second isolation module is arranged
The noise jamming of power amplifier module in functional module.
Further, power supply noise is avoided by the way that isolated power supply is arranged.
Detailed description of the invention
Fig. 1 is the structural block diagram of the electronic equipment provided by the embodiment of the utility model with decrease of noise functions.
Description of symbols:
100- microphone voice module 101- microphone array 102- speech processing module 103- analog-to-digital conversion module
104- the first isolation module 105- the second isolation module 106- isolated power supply 107- microprocessor 200- product function of tonic chord mould
Block 201- host computer 202- rear class power amplifier filter circuit 203- loudspeaker
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model
Limitation.
Fig. 1 is the structural block diagram of the electronic equipment with full isolation Dolby circuit provided by the embodiment of the utility model, this
Utility model embodiment provides a kind of electronic equipment with full isolation Dolby circuit, including 100 He of microphone voice module
Product main functional modules 200, the microphone voice module 100 include microphone array 101, speech processing module 102 and modulus
Conversion module 103.
Wherein, microphone array 101 can be multichannel microphone array, microphone array 101 and analog-to-digital conversion module 103
It is connected, analog-to-digital conversion module 103 is connected with speech processing module 102.It is product function of tonic chord mould outside microphone voice module 100
Block 200, the microphone voice module 100 in the present embodiment support simulation output, in the upper of connection product main functional modules 200
When machine 201, due to the objective reality of earth potential between microphone voice module 100 and host computer 201, and in host computer 201
There is also noise jammings in portion, can be passed to inside microphone voice module 100 by analog audio circuit, to cause fixed frequency
The voice noise of range interferes.Therefore, electronic equipment provided by the embodiment of the utility model is provided with the first isolation module 104,
It is arranged between the output end of speech processing module 102 and above-mentioned host computer 201.In the present embodiment, microphone voice module
100 can also include microprocessor (MCU) 107, first isolation module 104 respectively with speech processing module 102 and micro process
Device 107 is connected.
First isolation module 104 can be specifically low-frequency transformer.More specifically, can be the sound of two impedance matchings
Frequency isolating transformer, to effectively separate the coupling path in two hardware system circuits.The low-frequency transformer works in audio
In range, working frequency is generally from 10-20000Hz.
The electronic equipment with full isolation Dolby circuit provided by the embodiment of the utility model, by the way that the first isolation mode is arranged
Block 104 has cut off microphone voice module 100 and has coupled road with the noise jamming of other circuits of outside manufacture main functional modules 200
Diameter to providing good working environment inside microphone voice module 100, and then improves the reliability of internal work.
Preferably, microphone voice module 100 further includes the second isolation module 105, analog-to-digital conversion module 103 by this
Two isolation modules 105 are connected with the power amplifier module of the product main functional modules 200 outside microphone voice module 100.Power amplifier mould
Block may include rear class power amplifier filter circuit 202 and loudspeaker 203, and analog-to-digital conversion module 103 passes through above-mentioned second isolation module 105
It is connected respectively with rear class power amplifier filter circuit 202 and loudspeaker 203.Wherein loudspeaker 203 can the sound that plays of acquisition system itself,
Do echo acquisition.Power amplifier module in the prior art, especially analog amplifier circuit, it is dry that there are the digital noises of upper frequency
It disturbs, the present embodiment can be effectively removed 200 bring common mode of product main functional modules by the second isolation module 105 of setting and make an uproar
Sound.
Second isolation module 105 can be specifically low-frequency transformer.More specifically, can be the sound of two impedance matchings
Frequency isolating transformer, to effectively separate the coupling path in two hardware system circuits.The low-frequency transformer works in audio
In range, working frequency is generally from 10-20000Hz.
On the basis of the above embodiments, microphone voice module 100 further includes power supply, for speech processing module
102 and analog-to-digital conversion module 103 power.
Due to the ripple and noise problem of power supply, it is isolated power supply 106 that the present embodiment, which is preferably set up the power supply,.The isolation
Big electrolytic capacitor can be arranged in inside in power supply 106, to promote the Ripple Suppression ability of isolated power supply 106.Moreover, in isolation electricity
Biggish isolated impedance is set between the ground output and input in source 106, forms the high-impedance state of insulation, without current loop, by
This can effectively cut off the coupling path of external disturbance, avoid the microphone array 101 inside microphone voice module 100
It is interfered with speech processing module 102 by power supply noise.
Implementation as one preferred, microphone voice module 100 can include simultaneously the first isolation module 104,
Second isolation module 105 and isolated power supply 106, to guarantee optimal noise reduction effect.
The structure, features, and effects of the present invention is described in detail based on the embodiments shown in the drawings, with
Upper described is only the preferred embodiment of the utility model, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to
Change or equivalent example modified to equivalent change made by conception according to the utility model, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (7)
1. a kind of electronic equipment with full isolation Dolby circuit, including microphone voice module and product main functional modules；
The microphone voice module includes microphone array, speech processing module and analog-to-digital conversion module；
The microphone array is connected with the analog-to-digital conversion module；
The analog-to-digital conversion module is connected with the speech processing module；It is characterized by:
The microphone voice module further includes the first isolation module, and first isolation module is arranged in the speech processes mould
Between the output end of block and the host computer of the product main functional modules.
2. electronic equipment according to claim 1, which is characterized in that first isolation module is low-frequency transformer.
3. electronic equipment according to claim 1, which is characterized in that the microphone voice module further includes the second isolation
Module, the analog-to-digital conversion module are connected by second isolation module with the power amplifier module of the product main functional modules.
4. electronic equipment according to claim 3, which is characterized in that second isolation module is low-frequency transformer.
5. electronic equipment according to claim 1, which is characterized in that the microphone voice module further includes power supply, is used
It powers in the speech processing module and the analog-to-digital conversion module.
6. electronic equipment according to claim 5, which is characterized in that the power supply is isolated power supply.
7. electronic equipment according to claim 1-6, which is characterized in that the microphone array is classified as multichannel Mike
Wind array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821621981.1U CN208905198U (en) | 2018-09-30 | 2018-09-30 | Electronic equipment with full isolation Dolby circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821621981.1U CN208905198U (en) | 2018-09-30 | 2018-09-30 | Electronic equipment with full isolation Dolby circuit |
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| Publication Number | Publication Date |
|---|---|
| CN208905198U true CN208905198U (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821621981.1U Active CN208905198U (en) | 2018-09-30 | 2018-09-30 | Electronic equipment with full isolation Dolby circuit |
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| CN (1) | CN208905198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164425A (en) * | 2019-05-29 | 2019-08-23 | 北京声智科技有限公司 | A kind of noise-reduction method, device and the equipment that can realize noise reduction |
-
2018
- 2018-09-30 CN CN201821621981.1U patent/CN208905198U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164425A (en) * | 2019-05-29 | 2019-08-23 | 北京声智科技有限公司 | A kind of noise-reduction method, device and the equipment that can realize noise reduction |
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