CN207053751U - Single loudspeaker handoff calls circuit, loudspeaker and voiceband facility - Google Patents
Single loudspeaker handoff calls circuit, loudspeaker and voiceband facility Download PDFInfo
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- CN207053751U CN207053751U CN201720751310.6U CN201720751310U CN207053751U CN 207053751 U CN207053751 U CN 207053751U CN 201720751310 U CN201720751310 U CN 201720751310U CN 207053751 U CN207053751 U CN 207053751U
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Abstract
The utility model provides a kind of single loudspeaker handoff calls circuit, loudspeaker and voiceband facility, and the circuit includes：First output end of simulation bridgt circuit is connected with the first loudspeaker, and the second output end and input for simulating bridgt circuit are connected by switching circuit with the second loudspeaker；Digital signal processing circuit is analyzed target service request, generates switch-over control signal, and switching circuit controls the connection status between simulation bridgt circuit and the second loudspeaker according to switch-over control signal.Single loudspeaker handoff calls circuit of the present utility model, only it is provided with two loudspeakers, one loudspeaker is only used as the use of downlink voice delivery unit, and another loudspeaker can be asked to switch between downlink voice delivery unit and ascending voice delivery unit according to target service.Speech quality is good, reduces cost and production difficulty, and speech quality and production cost, the technical problem of production difficulty can not be taken into account simultaneously by alleviating the circuit in traditional voiceband facility.
Description
Technical field
The technical field of voiceband facility is the utility model is related to, more particularly, to a kind of single loudspeaker handoff calls electricity
Road, loudspeaker and voiceband facility.
Background technology
Traditional voiceband facility (such as earphone) is typically provided with two loudspeakers and a microphone, due to wheat
Gram wind is away from mouth, in order to obtain the small sound that human body is sent, microphone must very sensitive and gain must be very big.But
It is that can so ambient noise is penetrated into microphone, uplink speech quality is influenceed, particularly in bus, subway station
In public place Deng environment complexity, this phenomenon is even more serious.Then, recent years, various digital cables, wireless headset pass through
Increase number of microphone, lift DSP (Digital Signal Processing) performance, strengthen software algorithm, ascending voice and downlink voice are entered
The noise reduction process of digitized.
But these solutions are adding number of microphone, while lifting DSP performances, also considerably increase material into
This, also new requirement is added after microphone is increased to the sound chamber of earphone, must in production in order to reach good uniformity
Every set of headphones must be calibrated, production difficulty is big, and production cost is high.
To sum up, the circuit in traditional voiceband facility can not take into account speech quality and production cost, production hardly possible simultaneously
Degree.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of single loudspeaker handoff calls circuit, loudspeaker and sound
Transfer device is kept pouring in, speech quality and production cost, life can not be taken into account simultaneously with the circuit alleviated in traditional voiceband facility
Produce the technical problem of difficulty.
In a first aspect, the utility model embodiment provides a kind of single loudspeaker handoff calls circuit, including：Data signal
Process circuit, switching circuit and simulation bridgt circuit, the first output end of the simulation bridgt circuit are connected with the first loudspeaker,
The input of second output end of the simulation bridgt circuit and the simulation bridgt circuit passes through the switching circuit and second
Loudspeaker connects；
The data communication port of the digital signal processing circuit is connected with the switching circuit, for receiving target industry
Business request, and target service request is analyzed, analysis result is obtained, switching control is generated according to the analysis result
Signal, wherein, the target service request includes call request or audio playing request；
The switching circuit is used to be raised according to the switch-over control signal control simulation bridgt circuit and described second
Connection status between sound device；
Wherein, when target service request is the call request, the simulation bridgt circuit is raised with described first
The first link connection between sound device and second loudspeaker, first link be used for the first user and second user it
Between transmit call-information；
When the target service request be audio playing request when, it is described simulation bridgt circuit and first loudspeaker and
The second link connection between second loudspeaker, second link are used to broadcast to first user transmission audio
Put the audio-frequency information in request.
With reference in a first aspect, the utility model embodiment provides the first possible embodiment of first aspect, its
In, the simulation bridgt circuit includes：Input simulation bridgt circuit, output simulation bridgt circuit, the output simulation bridge joint electricity
Road includes：First output simulation bridgt circuit, the second output simulation bridgt circuit,
The input simulation bridgt circuit is connected by input with second loudspeaker；
The first output simulation bridgt circuit is connected by the first output end with first loudspeaker；
The second output simulation bridgt circuit is connected by the second output end with second loudspeaker；
Wherein, when target service request be the call request, the input simulation bridgt circuit and described the
The first sublink conducting between two loudspeakers, when target service request is the audio playing request, described second
Output simulation bridgt circuit turns on the second sublink between second loudspeaker, and the first link connection includes described
First sublink and the first output simulation bridgt circuit connect with the 3rd sublink between first loudspeaker, described
The connection of second link includes second sublink and connected with the 3rd sublink.
With reference in a first aspect, the utility model embodiment provides second of possible embodiment of first aspect, its
In, the digital signal processing circuit includes：Digital signal processor, digital/analog converter, analog/digital converter and
Switch controller；
The digital signal processor is used to receive the target service request, and target service request is divided
Analysis, and the analysis result is sent to the switch controller, and, receive the first digitized audio message, the number of output second
Word audio-frequency information, wherein, first digitized audio message includes call-information or the audio that the second user is sent
Information, second digitized audio message are the call-information that first user sends；
The digital/analog converter connects with the digital signal processor, the output simulation bridgt circuit respectively,
First digitized audio message sent for receiving the digital signal processor, first digitized audio message is turned
Change the first analog audio information into, and first analog audio information is sent to the output simulation bridgt circuit；
The analog/digital converter connects with the digital signal processor, the input simulation bridgt circuit respectively,
The second analog audio information after the amplification sent for receiving the input simulation bridgt circuit, by second after the amplification
Analog audio information is converted into second digitized audio message, and second digitized audio message is sent to the numeral
Signal processor, so that the digital signal processor exports second digitized audio message；
The switch controller is connected with the digital signal processor, is sent for receiving the digital signal processor
The analysis result, the switch-over control signal is generated according to the analysis result.
With reference in a first aspect, the utility model embodiment provides the third possible embodiment of first aspect, its
In, the switching circuit includes：Switching switch；
The switching switch is connected with the switch controller, for being switched over according to the switch-over control signal, with
Make the first sublink conducting or second sublink conducting.
With reference in a first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect, its
In, the input simulation bridgt circuit includes：Resistance, differential input amplifier；
The first end of the resistance is connected with the positive input of the differential input amplifier, the second end of the resistance
It is connected by the switching switch with the first end of second loudspeaker, the resistance is used for the impedance for matching Differential Input；
The reverse input end of the differential input amplifier passes through the switching switch and the second of second loudspeaker
End connection, the output end of the differential input amplifier are connected with the analog/digital converter, the differential input amplifier
The second analog audio information sent for amplifying first user by second loudspeaker, after obtaining the amplification
Second analog audio information, and the second analog audio information after the amplification is sent to the analog/digital converter.
With reference in a first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect, its
In, the first output simulation bridgt circuit includes：First differential output amplifiers；
The input of first differential output amplifiers is connected with the digital/analog converter, first difference
The positive output end of output amplifier is connected with the first end of first loudspeaker, first differential output amplifiers it is anti-
It is connected to output end with the second end of first loudspeaker, first differential output amplifiers are used to receive first mould
Intend audio-frequency information, and first analog audio information is amplified processing, the first analog audio information after being amplified,
And export to first loudspeaker.
With reference in a first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect, its
In, the second output simulation bridgt circuit includes：Second differential output amplifiers；
The input of second differential output amplifiers is connected with the digital/analog converter, second difference
The positive output end of output amplifier is connected with the first end of second loudspeaker, second differential output amplifiers it is anti-
It is connected to output end with the second end of second loudspeaker, second differential output amplifiers are used to receive first mould
Intend audio-frequency information, and first analog audio information is amplified processing, the first analog audio information after being amplified,
And pass through the switching switch output to second loudspeaker.
Second aspect, the utility model embodiment additionally provide a kind of loudspeaker, including：Described in above-mentioned first aspect
Single loudspeaker handoff calls circuit, in addition to shell；
Single loudspeaker handoff calls circuit is arranged in the shell.
The third aspect, the utility model embodiment additionally provide a kind of voiceband facility, the voiceband facility bag
Include：Loudspeaker described in above-mentioned second aspect, in addition to：Data line and plug；
The data line connects with the plug, the loudspeaker respectively, wherein, the plug is used to connect terminal
Equipment, the terminal device include at least one of：Mobile phone, tablet personal computer, desktop computer, intercom.
Fourth aspect, the utility model embodiment additionally provide a kind of voiceband facility, the voiceband facility bag
Include：Loudspeaker described in above-mentioned second aspect, in addition to：Data transmission module；
The loudspeaker is connected with the data transmission module, wherein, the data transmission module is used to make described raise one's voice
Enter row data communication between device and terminal device, the terminal device includes at least one of：Mobile phone, tablet personal computer, desktop
Brain, intercom.
The utility model embodiment brings following beneficial effect：The utility model embodiment provides a kind of single loudspeaker
Handoff calls circuit, loudspeaker and audio transmission are set, and single loudspeaker handoff calls circuit includes：Digital signal processing circuit,
Switching circuit and simulation bridgt circuit, the first output end for simulating bridgt circuit are connected with the first loudspeaker, simulate bridgt circuit
The second output end and simulate bridgt circuit input be connected by switching circuit with the second loudspeaker；Digital Signal Processing electricity
The data communication port on road is connected with switching circuit, divides for receiving target service request, and to target service request
Analysis, obtain analysis result, according to analysis result generate switch-over control signal, wherein, target service request include call request or
Audio playing request；Switching circuit is used to control the company between simulation bridgt circuit and the second loudspeaker according to switch-over control signal
Connect state；Wherein, when target service request be call request, simulation bridgt circuit and the first loudspeaker and the second loudspeaker it
Between the first link connection, the first link be used for transmit call-information between the first user and second user；Work as target service
Ask for audio playing request when, simulation bridgt circuit connected with the second link between the first loudspeaker and the second loudspeaker,
Second link is used to transmit the audio-frequency information in audio playing request to the first user.
In traditional voiceband facility (such as earphone), two loudspeakers and a microphone are typically provided with,
Speech quality is poor in noisy environment, or, increase number of microphone, strengthen software algorithm, with to ascending voice and descending language
Sound is digitized noise reduction process, and such design method adds Material Cost, and production difficulty is big, and cost is high.With it is traditional
Circuit design mode in voiceband facility is compared, and single loudspeaker handoff calls circuit in the utility model is believed by numeral
Number process circuit receives target service request, and target service request is analyzed, and obtains analysis result, and then, switching electricity
Road controls the connection status between simulation bridgt circuit and the second loudspeaker according to analysis result, when target service request please for call
When asking, simulation bridgt circuit connects with the first link between the first loudspeaker and the second loudspeaker, it is, simulation bridgt circuit
The first output end with being connected between the first loudspeaker, and simulate bridgt circuit input with being connected between the second loudspeaker.So,
First loudspeaker can just receive the call-information that second user is sent, and so that the first user answers, now the first loudspeaker is made
For downlink voice delivery unit, the call voice from second user is transmitted；Second loudspeaker can receive the first user and send
Call-information, so that second user is answered, now, the second loudspeaker is as ascending voice delivery unit, specifically, second raises
Sound device uses as microphone, sends the voice signal of first user's ear-drum to second user, to realize the first user and
Call-information is transmitted between two users.And when target service request is audio playing request, simulation bridgt circuit is raised one's voice with first
The second link connection between device and the second loudspeaker, it is, between the first output end of simulation bridgt circuit and the first loudspeaker
Connection, and the second output end of bridgt circuit is simulated with being connected between the second loudspeaker.So, the first loudspeaker and the second loudspeaker
Downlink voice delivery unit is all used as, so that the first user listens to the audio-frequency information in audio playing request.It is of the present utility model
In single loudspeaker handoff calls circuit, two loudspeakers are only provided with, single microphone is not set, and a loudspeaker is only
Used as downlink voice delivery unit, and another loudspeaker can ask to transmit list in downlink voice according to target service
Switched between member and ascending voice delivery unit.When being conversed in noisy environment, because two loudspeakers are all worn
Wear in the duct of user, isolate to a certain extent with external environment condition, block the environmental noise for hindering call, speech quality
It is good, and Material Cost and production difficulty are reduced, design is simple, substantially increases production efficiency, alleviates traditional audio and passes
Circuit in transfer device can not take into account speech quality and production cost, the technical problem of production difficulty simultaneously.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for single loudspeaker handoff calls circuit that the utility model embodiment provides；
Fig. 2 is the structural representation for another single loudspeaker handoff calls circuit that the utility model embodiment provides；
Fig. 3 is target service request that the utility model embodiment provides when being audio playing request, single loudspeaker switching
The isoboles of speaking circuit；
Fig. 4 is target service request that the utility model embodiment provides when being call request, single loudspeaker handoff calls
The isoboles of circuit.
Icon：11- digital signal processing circuits；12- switching circuits；13- simulates bridgt circuit；131- input simulation bridge joints
Circuit；The output simulation bridgt circuits of 132- first；The output simulation bridgt circuits of 133- second.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
For ease of understanding the present embodiment, a kind of single loudspeaker disclosed in the utility model embodiment is cut first
Speaking circuit is changed to describe in detail.
Embodiment one：
A kind of single loudspeaker handoff calls circuit, with reference to figure 1, single loudspeaker handoff calls circuit includes：Data signal
Process circuit 11, switching circuit 12 and simulation bridgt circuit 13, simulate the first output end and the first loudspeaker of bridgt circuit 13
Connection, the second output end for simulating bridgt circuit 13 and the input for simulating bridgt circuit 13 are raised by switching circuit 12 and second
Sound device connects；
The data communication port of digital signal processing circuit 11 is connected with switching circuit 12, please for receiving target service
Ask, and target service request is analyzed, obtain analysis result, switch-over control signal is generated according to analysis result, wherein, mesh
Mark service request includes call request or audio playing request；
Switching circuit 12 is used to control the company between the simulation loudspeaker of bridgt circuit 13 and second according to switch-over control signal
Connect state；
Wherein, when target service request is call request, simulation bridgt circuit 13 is raised one's voice with the first loudspeaker and second
The first link connection between device, the first link are used to transmit call-information between the first user and second user；
When target service request is audio playing request, the loudspeaker of bridgt circuit 13 and first and the second loudspeaker are simulated
Between the second link connection, the second link be used for the first user transmit audio playing request in audio-frequency information.
In the utility model embodiment, target service request includes call request or audio playing request, wherein, call
Request can be understood as the request to receive calls or the request called, and can also be the request of recording, the utility model
Embodiment is not particularly limited to it.And when being the request of recording, the second loudspeaker uses as ascending voice delivery unit,
The voice messaging that the first user sends is received, it is, the input of simulation bridgt circuit connects with the second loudspeaker.
Specifically, target service request is that terminal device is automatically transmitted to single loudspeaker handoff calls circuit, for example, single
When loudspeaker handoff calls circuit is applied in wired earphone, when the plug of earphone accesses smart mobile phone, user clicks on intelligent hand
When music software in machine carries out listening song, smart mobile phone is that have sent audio to single loudspeaker handoff calls circuit of earphone to play
Request.
First link is specially to simulate the link and simulation bridge joint between the first output end of bridgt circuit and the first loudspeaker
Link between the input of circuit and the second loudspeaker；Second link is specially the first output end and first for simulating bridgt circuit
The link between link and the second output end of simulation bridgt circuit and the second loudspeaker between loudspeaker.
In traditional voiceband facility (such as earphone), two loudspeakers and a microphone are typically provided with,
Speech quality is poor in noisy environment, or, increase number of microphone, strengthen software algorithm, with to ascending voice and descending language
Sound is digitized noise reduction process, and such design method adds Material Cost, and production difficulty is big, and cost is high.
Compared with the circuit design mode in traditional voiceband facility, single loudspeaker switching in the utility model is logical
Telephone circuit receives target service by digital signal processing circuit and asked, and target service request is analyzed, and is analyzed
As a result, and then, switching circuit controls the connection status between simulation bridgt circuit and the second loudspeaker according to analysis result, works as target
When service request is call request, simulation bridgt circuit connects with the first link between the first loudspeaker and the second loudspeaker,
It is exactly to simulate the first output end of bridgt circuit with being connected between the first loudspeaker, and simulates the input and second of bridgt circuit
Connected between loudspeaker.
So, the first loudspeaker can just receive the call-information that second user is sent, so that the first user answers, now
First loudspeaker transmits the call voice from second user as downlink voice delivery unit；Second loudspeaker can receive
The call-information that first user sends, so that second user is answered, now, the second loudspeaker as ascending voice delivery unit,
Specifically, the second loudspeaker uses as microphone, the voice signal of first user's ear-drum is sent to second user, to realize
Call-information is transmitted between first user and second user.And when target service request is audio playing request, simulation bridge joint electricity
The second link between road and the first loudspeaker and the second loudspeaker connects, it is, simulation bridgt circuit the first output end with
Connected between first loudspeaker, and simulate the second output end of bridgt circuit with being connected between the second loudspeaker.So, the first loudspeaker
Downlink voice delivery unit is all used as with the second loudspeaker, so that the first user listens to the audio-frequency information in audio playing request.
In single loudspeaker handoff calls circuit of the present utility model, two loudspeakers are only provided with, are not set independent
Microphone, a loudspeaker is only used as the use of downlink voice delivery unit, and another loudspeaker can be according to target industry
Business request switches between downlink voice delivery unit and ascending voice delivery unit.Conversed in noisy environment
When, because two loudspeakers are all worn in the duct of user, isolate to a certain extent with external environment condition, it is logical to block obstruction
The environmental noise of words, speech quality is good, and reduces Material Cost and production difficulty, and design is simple, substantially increases production effect
Rate, speech quality and production cost, production difficulty can not be taken into account simultaneously by alleviating the circuit in traditional voiceband facility
Technical problem.
Further, include with reference to figure 2, simulation bridgt circuit 13：Input simulation bridgt circuit 131, output simulation bridge joint
Circuit, output simulation bridgt circuit include：First output simulation bridgt circuit 132, the second output simulation bridgt circuit 133,
Input simulation bridgt circuit 131 is connected by input with the second loudspeaker；
First output simulation bridgt circuit 132 is connected by the first output end with the first loudspeaker；
Second output simulation bridgt circuit 133 is connected by the second output end with the second loudspeaker；
Wherein, when target service request is call request, between the input simulation loudspeaker of bridgt circuit 131 and second
First sublink is turned on, and when target service request is audio playing request, the second output simulation bridgt circuit 133 is raised with second
The second sublink conducting between sound device, the connection of the first link include the first sublink and the first output simulation bridgt circuit 132
The 3rd sublink between the first loudspeaker connects, and the connection of the second link includes the second sublink and connected with the 3rd sublink.
With reference to figure 2, Fig. 2 is a kind of concrete structure for single loudspeaker handoff calls circuit that the utility model embodiment provides
Schematic diagram.Below using the first loudspeaker as left speaker, the second loudspeaker is is specifically described exemplified by right loudspeaker, but this reality
It is not particularly limited with new embodiment：
Further, include with reference to figure 2, digital signal processing circuit 11：Digital signal processor DSP, digital-to-analog turn
Parallel operation DAC, analog/digital converter ADC and switch controller CTRL；
Digital signal processor DSP is used to receive target service request, and target service request is analyzed, and will divide
Analysis result is sent to switch controller CTRL, and, the first digitized audio message is received, exports the second digitized audio message, its
In, the first digitized audio message includes the second user call-information or audio-frequency information that send, and the second digitized audio message is the
The call-information that one user sends；
Digital/analog converter DAC is respectively with digital signal processor DSP, and output simulation bridgt circuit connects, for connecing
The first digitized audio message that digital signal processor DSP is sent is received, the first digitized audio message is converted into the first analog audio
Frequency information, and the first analog audio information is sent to output and simulates bridgt circuit；
Analog/digital converter ADC is connected, used with digital signal processor DSP, input simulation bridgt circuit 131 respectively
The second analog audio information after the amplification for inputting the simulation transmission of bridgt circuit 131 is received, by the second analog audio after amplification
Frequency information is converted into the second digitized audio message, and the second digitized audio message is sent to digital signal processor, so that number
Word signal processor DSP exports the second digitized audio message；
Switch controller CTRL is connected with digital signal processor DSP, for receiving digital signal processor DSP transmission
Analysis result, switch-over control signal is generated according to analysis result.
Specifically, the data communication port of digital signal processor DSP includes digital signal input end mouth DIN, numeral letter
Number output port DOUT and target service request port MREQ, digital signal input end mouth DIN are used to receive the first DAB
Information；Digital signal output end mouth DOUT is used to export the second digitized audio message；Target service request port MREQ is used to connect
Receive target service request.
Specifically, digital signal processor DSP is specially dsp chip.
Further, with reference to figure 2, switching circuit includes：Switching switch SW；
Switching switch SW is connected with switch controller CTRL, for being switched over according to switch-over control signal, so that first
Sublink turns on or the conducting of the second sublink.
Wherein, link of first sublink between the input simulation loudspeaker of bridgt circuit 131 and second；Second sublink
For the link between the second output simulation loudspeaker of bridgt circuit 133 and second.
Switching switch SW can include the first switching switch and the second switching switchs, and the first switching switch is used to realize input
Simulation bridgt circuit connects with the link between the second loudspeaker, and the second switching switch is used to realize the second output simulation bridge joint electricity
Link between road and the second loudspeaker connects, and the first switching switch and the second switching switch are linked switch so that first
Switching switch switches having in switch with second and only one switch is in closure state.Certainly, switching switch can also be
Other forms, the utility model embodiment are not particularly limited to it.
Further, include with reference to figure 2, input simulation bridgt circuit 131：Resistance R, differential input amplifier ADI；
Resistance R first end is connected with differential input amplifier ADI positive input, and resistance R the second end is by cutting
Change switch SW to be connected with the first end of the second loudspeaker, resistance R is used for the impedance for matching Differential Input；
Differential input amplifier ADI reverse input end is connected by switching switch SW with the second end of the second loudspeaker,
Differential input amplifier ADI output end is connected with analog/digital converter ADC, and differential input amplifier ADI is used to amplify the
The second analog audio information that one user is sent by the second loudspeaker, the second analog audio information after being amplified, and will
The second analog audio information after amplification is sent to analog/digital converter ADC.
Further, include with reference to figure 2, the first output simulation bridgt circuit 132：First differential output amplifiers ADOL；
First differential output amplifiers ADOL input is connected with digital/analog converter DAC, and the first difference output is put
Big device ADOL positive output end is connected with the first end of the first loudspeaker, the first differential output amplifiers ADOL reverse output
End is connected with the second end of the first loudspeaker, and the first differential output amplifiers ADOL is used to receive the first analog audio information, and
First analog audio information is amplified processing, the first analog audio information after being amplified, and export to first and raise one's voice
Device.
Further, include with reference to figure 2, the second output simulation bridgt circuit：Second differential output amplifiers ADOR；
Second differential output amplifiers ADOR input is connected with digital/analog converter DAC, and the second difference output is put
Big device ADOR positive output end is connected with the first end of the second loudspeaker, the second differential output amplifiers ADOR reverse output
End is connected with the second end of the second loudspeaker, and the second differential output amplifiers ADOR is used to receive the first analog audio information, and
First analog audio information is amplified processing, the first analog audio information after being amplified, and switch SW by switching
Export to the second loudspeaker.
The above describes the concrete structure of single loudspeaker handoff calls circuit, below to single loudspeaker handoff calls
The course of work of circuit is introduced：
When target service request is audio playing request, equivalent circuit is as shown in figure 3, digital signal processor DSP connects
Audio playing request is received, the audio playing request is analyzed, obtains the result of audio broadcasting, the result that audio is played
Transmit to switch controller CTRL, the result that switch controller CTRL plays according to audio generates switch-over control signal, the switching
Control signal control switching switch SW connects the second output end for simulating bridgt circuit with the second loudspeaker (that is, right loudspeaker)
(the namely second output simulation bridgt circuit 133 connects with the second loudspeaker), also, digital signal processor DSP receives number
Word signal input port receive the first digitized audio message (that is, audio-frequency information), by first digitized audio message transmit to
First digitized audio message is converted into the first analogue audio frequency letter by digital/analog converter DAC, digital/analog converter DAC
Breath, and first analog audio information is transmitted separately to the first differential output amplifiers ADOL and the second differential output amplifiers
ADOR, the first differential output amplifiers ADOL are amplified processing to first analog audio information, and first after being amplified
Analog audio information, the second differential output amplifiers ADOR are also amplified processing to first analog audio information, put
The first analog audio information after big, finally, the first analog audio information after amplification is raised one's voice by the first loudspeaker and second
Device is transmitted to the ear of the first user, so that the first user carries out listening to for audio.
When target service request is call request, equivalent circuit is as shown in figure 4, digital signal processor DSP receives
Call request, the call request is analyzed, the result conversed, the result of call is transmitted to switch controller
CTRL, switch controller CTRL generate switch-over control signal, switch-over control signal control switching switch according to the result of call
The input and the second loudspeaker (that is, right loudspeaker) connection (namely input simulation bridgt circuit 131 of bridgt circuit will be simulated
Connected with the second loudspeaker).On the one hand, digital signal processor DSP receives the first numeral that digital signal input end mouth receives
Audio-frequency information (that is, the call-information that second user is sent), first digitized audio message is transmitted to digital/analog converter
First digitized audio message is converted into the first analog audio information by DAC, digital/analog converter DAC, and by first mould
Intend audio information transmissions to the first differential output amplifiers ADOL, the first differential output amplifiers ADOL is to first analogue audio frequency
Information is amplified processing, and the first analog audio information after being amplified, finally, the first analog audio information after amplification lead to
Cross the first loudspeaker to transmit to the ear of the first user, so that the first user answers the call-information that second user is sent；It is another
Aspect, the second loudspeaker receive the call-information that sends of the first user, that is, the second analog audio information, and by second mould
Intend audio information transmissions to put second analog audio information to differential input amplifier ADI, differential input amplifier ADI
Big processing, the second analog audio information after being amplified, and then, the second analog audio information after amplification passes through simulation/number
Word converter ADC is converted into the second digitized audio message, finally, is exported by digital signal output end mouth DOUT, so that second
User answers the call-information that the first user sends, and so, just can realize the call between the first user and second user, also
It is that, when target service request is call request, the second loudspeaker uses as microphone, receives the call that the first user sends
Information, second user is set to answer the call-information of the first user, and the first loudspeaker is receiver, the first user is listened
The call-information sent to second user.
Simply, when earphone is in audio broadcast state (such as stereo music broadcast state), it is, DSP
When be audio playing request, CTRL controls SW for the target service request of reception, make SPEAKER_R (that is, right loudspeaker, that is,
Second loudspeaker) output state is in, the first digitized audio message enters DSP from DIN, after DSP is handled, is sent to DAC, DAC
Divide two-way, be sent to ADOL, ADOR, ADOL direct drive SPEAKER_L (that is, left speaker, that is, the first loudspeaker) respectively,
ADOR passes through SW, drives SPEAKER_R；
When earphone is in call or microphone state, it is, the target service request that DSP is received is call request
When, CTRL control SW, SPEAKER_R is in input state, on the one hand, the first digitized audio message enters DSP from DIN, warp
After DSP processing, DAC is sent to, DAC is sent to ADOL, ADOL direct drives SPEAKER_L；On the other hand, SPEAKER_R pickups the
Two simulated audio signals, by SW, R, DSP ADC is amplified into by ADI, after DSP is handled, is exported from DOUT.
Embodiment two：
A kind of loudspeaker, the loudspeaker include above-mentioned single loudspeaker handoff calls circuit, in addition to shell；
Single loudspeaker handoff calls circuit is arranged in shell.
Specifically, above-mentioned single loudspeaker handoff calls circuit is integrated on a circuit board, in specific application, usually will
The circuit board is arranged in shell.
Embodiment three：
A kind of voiceband facility, the voiceband facility include：Above-mentioned loudspeaker, in addition to：Data line and insert
Head；
Data line connects with plug, loudspeaker respectively, wherein, plug is used to connect terminal device, wherein, terminal is set
It is standby to include at least one of：Mobile phone, tablet personal computer, desktop computer, intercom.
Specifically, the voiceband facility can be earphone, earphone, high-quality music earphone etc. of conversing, preferably, when
Preceding USB cabled digital earphones, intercom and other digital earphones etc., or other voiceband facilities, this practicality are new
Type embodiment is not particularly limited to it.
Example IV：
A kind of voiceband facility, the voiceband facility include：Above-mentioned loudspeaker, in addition to：Data transmission module；
Loudspeaker is connected with data transmission module, wherein, data transmission module is used to make to enter between loudspeaker and terminal device
Row data communication, terminal device include at least one of：Mobile phone, tablet personal computer, desktop computer, intercom.
Preferable data transmission module is bluetooth module, and preferable voiceband facility is bluetooth earphone, and this practicality is new
Type embodiment is not particularly limited to it.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
With the specific work process of device, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
For the technical staff in art field in the technical scope that the utility model discloses, it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
- A kind of 1. single loudspeaker handoff calls circuit, it is characterised in that including：Digital signal processing circuit, switching circuit and mould Intend bridgt circuit, the first output end of the simulation bridgt circuit is connected with the first loudspeaker, described to simulate the of bridgt circuit The input of two output ends and the simulation bridgt circuit is connected by the switching circuit with the second loudspeaker；The data communication port of the digital signal processing circuit is connected with the switching circuit, please for receiving target service Ask, and target service request is analyzed, obtain analysis result, switching control letter is generated according to the analysis result Number, wherein, the target service request includes call request or audio playing request；The switching circuit is used for according to the switch-over control signal control simulation bridgt circuit and second loudspeaker Between connection status；Wherein, when target service request is the call request, the simulation bridgt circuit and first loudspeaker The first link connection between second loudspeaker, first link are used to pass between the first user and second user Defeated call-information；When target service request be audio playing request, bridgt circuit and first loudspeaker and described of simulating The second link connection between second loudspeaker, second link, which is used to play to first user transmission audio, asks Audio-frequency information in asking.
- 2. single loudspeaker handoff calls circuit according to claim 1, it is characterised in that the simulation bridgt circuit bag Include：Input simulation bridgt circuit, output simulation bridgt circuit, the output simulation bridgt circuit include：First output simulation bridge Circuit is connect, bridgt circuit is simulated in the second output,The input simulation bridgt circuit is connected by input with second loudspeaker；The first output simulation bridgt circuit is connected by the first output end with first loudspeaker；The second output simulation bridgt circuit is connected by the second output end with second loudspeaker；Wherein, when target service request is the call request, the input simulation bridgt circuit is raised with described second The first sublink conducting between sound device, when target service request is the audio playing request, second output Simulation bridgt circuit turns on the second sublink between second loudspeaker, and the first link connection includes described first Sublink and the first output simulation bridgt circuit connect with the 3rd sublink between first loudspeaker, and described second Link connection includes second sublink and connected with the 3rd sublink.
- 3. single loudspeaker handoff calls circuit according to claim 2, it is characterised in that the digital signal processing circuit Including：Digital signal processor, digital/analog converter, analog/digital converter and switch controller；The digital signal processor is used to receive the target service request, and target service request is analyzed, And send the analysis result to the switch controller, and, the first digitized audio message is received, exports the second digital sound Frequency information, wherein, first digitized audio message includes call-information or the audio-frequency information that the second user is sent, Second digitized audio message is the call-information that first user sends；The digital/analog converter with the digital signal processor, the output simulation bridgt circuit connection, is used for respectively First digitized audio message that the digital signal processor is sent is received, first digitized audio message is converted into First analog audio information, and first analog audio information is sent to the output simulation bridgt circuit；The analog/digital converter with the digital signal processor, the input simulation bridgt circuit connection, is used for respectively The second analog audio information after the amplification that the input simulation bridgt circuit is sent is received, by the second simulation after the amplification Audio-frequency information is converted into second digitized audio message, and second digitized audio message is sent to the data signal Processor, so that the digital signal processor exports second digitized audio message；The switch controller is connected with the digital signal processor, the institute sent for receiving the digital signal processor Analysis result is stated, the switch-over control signal is generated according to the analysis result.
- 4. single loudspeaker handoff calls circuit according to claim 3, it is characterised in that the switching circuit includes：Cut Change switch；The switching switch is connected with the switch controller, for being switched over according to the switch-over control signal, so that institute State the conducting of the first sublink or second sublink conducting.
- 5. single loudspeaker handoff calls circuit according to claim 4, it is characterised in that the input simulation bridgt circuit Including：Resistance, differential input amplifier；The first end of the resistance is connected with the positive input of the differential input amplifier, and the second end of the resistance passes through The switching switch is connected with the first end of second loudspeaker, and the resistance is used for the impedance for matching Differential Input；The reverse input end of the differential input amplifier is connected by the second end of the switching switch and second loudspeaker Connect, the output end of the differential input amplifier is connected with the analog/digital converter, and the differential input amplifier is used for Amplify the second analog audio information that first user is sent by second loudspeaker, obtain second after the amplification Analog audio information, and the second analog audio information after the amplification is sent to the analog/digital converter.
- 6. single loudspeaker handoff calls circuit according to claim 3, it is characterised in that the first output simulation bridge joint Circuit includes：First differential output amplifiers；The input of first differential output amplifiers is connected with the digital/analog converter, first difference output The positive output end of amplifier is connected with the first end of first loudspeaker, first differential output amplifiers it is reverse defeated Go out end to be connected with the second end of first loudspeaker, first differential output amplifiers are used to receive first analog audio Frequency information, and first analog audio information is amplified processing, the first analog audio information after being amplified, and it is defeated Go out to first loudspeaker.
- 7. single loudspeaker handoff calls circuit according to claim 4, it is characterised in that the second output simulation bridge joint Circuit includes：Second differential output amplifiers；The input of second differential output amplifiers is connected with the digital/analog converter, second difference output The positive output end of amplifier is connected with the first end of second loudspeaker, second differential output amplifiers it is reverse Output end is connected with the second end of second loudspeaker, and second differential output amplifiers are used to receive first simulation Audio-frequency information, and first analog audio information is amplified processing, the first analog audio information after being amplified, and Pass through the switching switch output to second loudspeaker.
- 8. a kind of loudspeaker, it is characterised in that the loudspeaker includes：Singly raising any one of the claims 1 to 7 Sound device handoff calls circuit, in addition to shell；Single loudspeaker handoff calls circuit is arranged in the shell.
- 9. a kind of voiceband facility, it is characterised in that the voiceband facility includes raising described in the claims 8 Sound device, in addition to：Data line and plug；The data line connects with the plug, the loudspeaker respectively, wherein, the plug is set for connecting terminal Standby, the terminal device includes at least one of：Mobile phone, tablet personal computer, desktop computer, intercom.
- 10. a kind of voiceband facility, it is characterised in that the voiceband facility is included described in the claims 8 Loudspeaker, in addition to：Data transmission module；The loudspeaker is connected with the data transmission module, wherein, the data transmission module be used for make the loudspeaker with Enter row data communication between terminal device, the terminal device includes at least one of：Mobile phone, tablet personal computer, desktop computer are right Say machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720751310.6U CN207053751U (en) | 2017-06-26 | 2017-06-26 | Single loudspeaker handoff calls circuit, loudspeaker and voiceband facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720751310.6U CN207053751U (en) | 2017-06-26 | 2017-06-26 | Single loudspeaker handoff calls circuit, loudspeaker and voiceband facility |
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| Publication Number | Publication Date |
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| CN207053751U true CN207053751U (en) | 2018-02-27 |
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| CN201720751310.6U Active CN207053751U (en) | 2017-06-26 | 2017-06-26 | Single loudspeaker handoff calls circuit, loudspeaker and voiceband facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112601159A (en) * | 2020-12-10 | 2021-04-02 | 深圳市中科蓝讯科技股份有限公司 | Audio calibration circuit and audio equipment |
-
2017
- 2017-06-26 CN CN201720751310.6U patent/CN207053751U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112601159A (en) * | 2020-12-10 | 2021-04-02 | 深圳市中科蓝讯科技股份有限公司 | Audio calibration circuit and audio equipment |
| CN112601159B (en) * | 2020-12-10 | 2022-03-15 | 深圳市中科蓝讯科技股份有限公司 | Audio calibration circuit and audio equipment |
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Address after: Room 801, Building B, Tengfei Building, No. 88 Jiangmiao Road, Nanjing Area, China (Jiangsu) Pilot Free Trade Zone, Nanjing City, Jiangsu Province, 210000 Patentee after: Jiuyin Technology (Nanjing) Co.,Ltd. Address before: Room 301, 3rd Floor, Fuxing Building, Binlang Road, Free Trade Zone, Fubao Street, Futian District, Shenzhen City, Guangdong Province, 518000 Patentee before: SHENZHEN JIUYIN TECHNOLOGY CO.,LTD. |