CN105554606B - Digital earphone and electronic equipment - Google Patents
Digital earphone and electronic equipment Download PDFInfo
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- CN105554606B CN105554606B CN201510938520.1A CN201510938520A CN105554606B CN 105554606 B CN105554606 B CN 105554606B CN 201510938520 A CN201510938520 A CN 201510938520A CN 105554606 B CN105554606 B CN 105554606B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Headphones And Earphones (AREA)
Abstract
The present invention provides a kind of digital earphone and electronic equipment.Wherein, the digital earphone, it include: earphone terminal adapter, at least two microphones, at least two loudspeakers, wherein, each microphone at least two microphone acquires ambient sound, and ambient sound is converted to digital microphone signal, wherein, the earphone terminal adapter includes: power clock terminal, digital power clock signal is received from the external electronic device connecting with the digital earphone, to provide clock signal and power supply signal for the digital earphone；Input terminal receives digital microphone signal from least two microphone, and received digital microphone signal is input to the external electronic device connecting with the digital earphone；Output terminal receives digital audio and video signals from the external electronic device connecting with the digital earphone, and the digital audio and video signals are used to generate the analog audio signal for being suitable at least two loudspeaker output.
Description
Technical field
The present invention relates to earphone fields, more particularly, are related to a kind of digital earphone and electronic equipment.
Background technique
With the development of science and technology, the function of earphone is more and more diversified, the earphone with different function is more and more fully
Meet the different demands of user.For example, the earphone with decrease of noise functions can guarantee that user receives in more noisy environment
The audio of high quality is listened, the earphone with hearing-aid function can make more clearly to listen to extraneous sound there are the user of dysaudia
Sound, the earphone with sound-recording function can bring the convenience that can be recorded at any time to user.
In general, the earphone that uses of user is three-stage plug (as shown in Figure 1) or four-part form plug (such as Fig. 2 institute for plug
Show) earphone or plug be USB interface earphone.However, earphone and the portion of existing three-stage plug or four-part form plug
The earphone for dividing USB interface is simulation earphone, when earphone cable is longer, analog signal can be influenced because of common mode interference, to draw
The problems such as playing demodulation error code, transmission shakiness.Although the earphone of some existing USB interfaces is digital earphone, this kind of earphone
In need to be arranged audio codec (Codec) to transmit digital audio and video signals so that the cost of earphone is very high.
Also, it in order to realize decrease of noise functions, hearing-aid function or sound-recording function, needs that microphone is arranged on earphone cable.It is logical
Often in the position of close user's mouth of earphone cable, one microphone of setting comes while realizing these functions, still, such ear
Machine cannot achieve binary channels input, that is, cannot achieve the functions such as ears hearing aid, Double-ear type sound-recording and noise reduction effect is undesirable.This
Outside, the existing earphone with decrease of noise functions needs to be powered by the battery built in earphone for earphone at work, so that earphone
Cost further increase.
Therefore, existing earphone not can be implemented simultaneously preferable noise reduction, Double-ear type sound-recording and ears hearing aid effect, and cost
It is very high.
Summary of the invention
Exemplary embodiment of the present invention is to provide a kind of digital earphone and electronic equipment.The digital earphone can gram
Taking existing earphone not can be implemented simultaneously the defect of preferable noise reduction, Double-ear type sound-recording and ears hearing aid effect, and the electronics is set
It is standby to be compatible with the digital earphone and existing earphone.
One side according to an exemplary embodiment of the present invention provides a kind of digital earphone, comprising: earphone terminal adapter, extremely
Few two microphones, at least two loudspeakers, wherein each microphone at least two microphone acquires ambient sound,
And ambient sound is converted into digital microphone signal, wherein the earphone terminal adapter includes: power clock terminal, from institute
The external electronic device for stating digital earphone connection receives digital power clock signal, to provide clock letter for the digital earphone
Number and power supply signal；Input terminal receives digital microphone signal from least two microphone, and by received digital wheat
Gram wind number is input to the external electronic device connecting with the digital earphone；Output terminal is connect from the digital earphone
External electronic device receive digital audio and video signals, the digital audio and video signals for generate be suitable at least two loudspeaking
The analog audio signal of device output.
Optionally, the digital earphone further include: power clock separation module, to the received number of power clock terminal
Power clock signal carries out shaping and DC processing, and will treated digital power clock signal is separated into clock signal and
Power supply signal.
Optionally, the digital earphone further include: Voltage stabilizing module, to the power supply signal of power clock separation module separation
Steady pressure treatment is carried out, and using the power supply signal after pressure stabilizing as the driving power of the digital earphone.
Optionally, at least two moment within each period of clock signal, output terminal are set from external electrical respectively
The standby digital audio and video signals for receiving the respective speaker corresponded at least two loudspeaker, and the digital audio is believed
Number for generates be suitable for respective speaker export analog audio signal.
Optionally, the digital earphone further include: pulse density modulated amplifier receives every number in output terminal
When word audio signal, the received digital audio and video signals of output terminal are converted into analog audio signal, to analog audio signal into
Row amplification, and the analog audio signal of amplification is output to described at least two according at the time of receiving the digital audio and video signals
Respective speaker in a loudspeaker.
Optionally, at least two loudspeaker is left speaker and right loudspeaker, wherein in each week of clock signal
At the time of corresponding with one of rising edge and failing edge in phase, output terminal is received from external electronic device corresponds to left speaker
Left channel digital audio signal, it is corresponding with another in rising edge and failing edge within each period of clock signal
At the time of, output terminal receives the right channel digital audio signal for corresponding to right loudspeaker from external electronic device.
Optionally, the digital earphone further include: multiplexer, wherein at least two microphone is at least two pairs
Microphone, wherein multiplexer to from least two pairs of microphones each microphone generate digital microphone signal into
Row multiplexing, and multiplexed digital microphone signal is transmitted to input terminal.
Another aspect according to an exemplary embodiment of the present invention, provides a kind of electronic equipment, comprising: the connection of electronic equipment end
Device sends signal to the earphone of connection, or receive signal from the earphone of connection for connecting earphone；Detection module works as electronics
When equipment terminal adapter is connected with earphone, whether the earphone for detecting connection is digital earphone；Audio codec, when detection mould
When block detects that the earphone of connection is digital earphone, by electronic equipment terminal adapter by digital power clock signal sum number word tone
Frequency signal is output to the digital earphone, and is decoded to from the received digital microphone signal of the digital earphone.
Optionally, the electronic equipment terminal adapter includes: power clock terminal, and the digital power clock signal is sent out
It is sent to the power clock terminal of the digital earphone of connection；Input terminal receives number from the input terminal of the digital earphone of connection
Microphone signal；Output terminal sends digital audio and video signals to the output terminal of the digital earphone of connection.
Optionally, audio codec is corresponding with one of rising edge and failing edge within each period of clock signal
At the moment, output corresponds to the left channel digital audio signal of the left speaker of the digital earphone of connection, in each of clock signal
At the time of corresponding with another in rising edge and failing edge in period, the right side that output corresponds to the digital earphone of connection is raised
The right channel digital audio signal of sound device.
Optionally, the electronic equipment further include: display, when detection module detects that the earphone of connection is digital ear
When machine, to the option of the operating mode of user's show check number word earphone；Input unit receives choosing of the user to operating mode
It selects, wherein the operating mode that audio codec is selected according to user is to the digital audio and video signals that will be sent to digital earphone
It is handled with from the received digital microphone signal of digital earphone.
Optionally, the operating mode of the digital earphone includes: denoising mode, hearing aid mode and Double-ear type sound-recording mode.
Optionally, the detection module by detection connection earphone load resistance come determine connection earphone whether be
Digital earphone.
Optionally, the electronic equipment, further includes: selection switch, wherein when detection module detects the earphone of connection
When for digital earphone, power clock terminal, the input terminal and the output terminal are connected to the use of audio codec by selection switch
In the respective terminal of input/output digital signal, when detection module detects the earphone of connection to simulate earphone, selection switch
Input/output analog signal is used for by what power clock terminal, the input terminal and the output terminal were connected to audio codec
Respective terminal.
It, can be by digital earphone at least in digital earphone according to an exemplary embodiment of the present invention and electronic equipment
Two microphones realize preferably noise reduction, Double-ear type sound-recording and ears hearing aid effect, and the digital signal of transmission makes the digital ear
Machine can effectively avoid the problems caused by common mode interference and without internal battery, significantly reduce cost, also, the electricity
Sub- equipment can be compatible with the digital earphone and existing earphone.
Detailed description of the invention
By below with reference to be exemplarily illustrated embodiment attached drawing carry out description, exemplary embodiment of the present it is upper
Stating will become apparent with other purposes and feature, in which:
Fig. 1 shows the example of 3 segmentation plugs of earphone；
Fig. 2 shows the examples of 4 segmentation plugs of earphone；
Fig. 3 shows the block diagram of digital earphone according to an exemplary embodiment of the present invention；
Fig. 4 shows the circuit diagram of digital earphone according to an exemplary embodiment of the present invention；
Fig. 5 shows the circuit diagram of the digital earphone of another exemplary embodiment according to the present invention；
Fig. 6 shows the block diagram of electronic equipment according to an exemplary embodiment of the present invention；
Fig. 7 shows the circuit diagram of the detection module of electronic equipment according to an exemplary embodiment of the present invention；
Fig. 8 shows the circuit diagram of electronic equipment according to an exemplary embodiment of the present invention.
Specific embodiment
Hereinafter, the exemplary embodiment that the present invention is more fully described with reference to the accompanying drawings, exemplary embodiment is in the accompanying drawings
It shows.However, it is possible to be embodied in many different forms exemplary embodiment, and should not be construed as being limited to illustrate herein
Exemplary embodiment.On the contrary, these embodiments are provided so that the disclosure will be thorough and complete, and will fully will be exemplary
The range of embodiment is communicated to those skilled in the art.
Fig. 3 shows the block diagram of digital earphone according to an exemplary embodiment of the present invention.
As shown in figure 3, digital earphone according to an exemplary embodiment of the present invention includes: earphone terminal adapter 100, at least two
A microphone 200 and at least two loudspeakers 300.
Each microphone at least two microphone 200 acquires ambient sound, and ambient sound is converted to digital wheat
Gram wind number.
Earphone terminal adapter 100 includes: power clock terminal, the input terminal and the output terminal.
In particular, power clock terminal is used to receive number electricity from the external electronic device connecting with the digital earphone
Source clock signal, to provide clock signal and power supply signal for the digital earphone.
Input terminal is used to receive digital microphone signal from least two microphone 200, and by received number
Microphone signal is input to the external electronic device connecting with the digital earphone.
Output terminal is used to receive digital audio and video signals, the number from the external electronic device connecting with the digital earphone
Word audio signal is used to generate the analog audio signal for being suitable at least two loudspeaker 300 output.
As an example, at least two moment within each period of clock signal, output terminal is respectively from external electrical
Equipment receives the digital audio and video signals of the respective speaker corresponded at least two loudspeaker 300, and the number
Audio signal is used to generate the analog audio signal for being suitable for respective speaker output.
Here, since at least two loudspeaker 300 needs to export analog signal, and output terminal is set from external electrical
It is standby it is received be digital signal, therefore, can be from described at least two in order to be converted to the received digital signal of output terminal
The analog signal that loudspeaker 300 exports, the digital earphone may also include that pulse density modulated amplifier.In particular, pulse
Density modulation amplifier can be used for when output terminal receives each digital audio and video signals, by the received digital sound of output terminal
Frequency signal is converted to analog audio signal, amplifies to analog audio signal, and according to receiving the digital audio and video signals
At the time of the analog audio signal of amplification is output to respective speaker at least two loudspeaker 300.
In one embodiment, at least two loudspeaker 300 can be left speaker and right loudspeaker, believe in clock
Number each period in it is corresponding with one of rising edge and failing edge at the time of, output terminal can from external electronic device receive pair
Should in the left channel digital audio signal of left speaker, within each period of clock signal in rising edge and failing edge
At the time of another is corresponded to, output terminal can receive the right channel digital audio for corresponding to right loudspeaker from external electronic device
Signal.For example, output terminal can be from external electronic device at the time of corresponding with rising edge within each period of clock signal
Receive the digital audio and video signals for corresponding to left speaker, at the time of corresponding with failing edge within each period of clock signal,
Output terminal can receive the digital audio and video signals for corresponding to right loudspeaker from external electronic device.
In addition, in actual use, earphone terminal adapter may also include the ground terminal for ground connection.Therefore, the earphone
Terminal adapter can be with 4 segmentation plug (as shown in Figure 2) Lai Shixian, or are realized with USB interface.
As an example, when earphone terminal adapter with 4 segmentation plug shown in Fig. 2 to realize when, the 4 segmentation plugs of Fig. 2 from
Four terminals under may respectively be: power clock terminal, output terminal, terminal and input terminal, or may respectively be:
Power clock terminal, output terminal, input terminal and ground terminal.
As another example, when earphone terminal adapter with USB interface to realize when, can be real by the VBUS terminal of USB interface
Now it is the power clock terminal of earphone terminal adapter of the invention, the D- terminal of USB interface is embodied as to earphone end of the invention
The D+ terminal of USB interface is embodied as the input terminal of earphone terminal adapter of the invention by the output terminal of connector, and will
The GND terminal of USB interface is embodied as the ground terminal of earphone terminal adapter of the invention.Further, since USB interface further includes the end ID
Therefore ID terminal can also be provided for marking the terminal of the resistance of digital earphone of the invention, or can not use ID by son
Terminal.
Here, for the received digital power clock letter of the power clock terminal for better using earphone terminal adapter 100
Number, the digital earphone may also include power clock separation module.In particular, power clock separation module can be used for power supply
The received digital power clock signal of clock terminal carries out shaping and DC processing, and digital power clock is believed by treated
Number it is separated into clock signal and power supply signal.Here, the clock signal isolated can be used for being described in digital earphone at least two
A microphone 200 and at least two loudspeakers 300 etc. provide clock, and the power supply signal isolated can be used for providing for digital earphone
Power supply.
In addition, in order to avoid the power supply signal isolated due to power clock separation module voltage unstable and influence
The performance of earphone, the digital earphone may also include Voltage stabilizing module.Here, Voltage stabilizing module is used for power clock separation module point
From power supply signal carry out steady pressure treatment, and using the power supply signal after pressure stabilizing as the driving power of the digital earphone.
Fig. 4 shows the circuit diagram of digital earphone according to an exemplary embodiment of the present invention.
As shown in figure 4, the digital earphone includes: two microphones (being indicated with two circles of the rightmost side in Fig. 4), two
A loudspeaker (tubaeform being indicated with two of the rightmost side in Fig. 4), earphone terminal adapter (including power clock terminal
(PWRCLK), input terminal (INPUT), output terminal (OUTPUT) and ground terminal (GND)), power clock separation module (CLK/
PWR Seperration), Voltage stabilizing module (LDO) and pulse density modulated amplifier (PDM AMP).
In particular, power clock terminal can receive digital power from the external electronic device connecting with the digital earphone
Clock signal.Then, power clock separation module can carry out shaping to the received digital power clock signal of power clock terminal
And DC processing, and digital power clock signal is separated into clock signal and power supply signal (DC) by treated.Here, divide
The clock signal separated out is provided to microphone, pulse density modulated amplifier (for example, clock signal is input into impulse density
Modulated amplifier PDMCKL terminal) etc..Later, Voltage stabilizing module can carry out the power supply signal that power clock separation module separates steady
Pressure processing, and using the power supply signal after pressure stabilizing as the driving power of the digital earphone.Pulse density modulated amplifier can be
When output terminal receives each digital audio and video signals, the received digital audio of output terminal is received by PDMDAT terminal and is believed
Number, digital audio and video signals are converted into analog audio signal, analog audio signal is amplified, and according to receiving the number
The analog audio signal of amplification is output to by two loudspeakers by L+/L- terminal and R+/R- terminal at the time of word audio signal
In respective speaker.
As an example, the frequency for working as the clock signal that power clock separation module is isolated is 3.072MHz and each Mike
When wind is the microphone of 32 (32bit), each microphone can acquire ambient sound with the sample frequency of 48KHz, and by environment
Sound is converted to digital microphone signal.At this point, input terminal can receive digital microphone signal from two microphones, and will receive
Digital microphone signal be input to the external electronic device connecting with the digital earphone.In addition, the digital earphone in Fig. 4 is also
It may include for opening or closing the microphone switch of microphone (Switch Encoder), therefore, when user need to only pass through this
When the digital earphone of invention listens to audio and do not have to outside portion's electronic equipment input microphone signal, it can be incited somebody to action by microphone switch
Microphone is closed, and when user needs digital earphone through the invention to input microphone signal to electronic equipment, can be passed through
Microphone switch opens microphone.
As an example, two microphones in Fig. 4 can be separately positioned on to the position close to user's mouth of two earphone cables
It sets.In this case, due to having around the mouth of user there are two microphone, when user uses the double of digital earphone
When ear print sound function, stereophonic recording may be implemented, it is described when user uses the decrease of noise functions or hearing-aid function of digital earphone
Digital earphone can be by being distributed in two received ambient sounds of microphone of two earphone cables, thus realizes that preferably noise reduction is imitated
Fruit or hearing aid effect.
It should be understood that the digital earphone of Fig. 4 is only example, digital earphone of the invention is without being limited thereto, for example, of the invention
At least two microphone included by digital earphone can be at least two pairs of microphones.At this point, the digital earphone can also wrap
Include multiplexer.Here, as an example, multiplexer can be to the number generated from each microphone at least two pairs of microphones
Microphone signal is multiplexed, and multiplexed digital microphone signal is transmitted to input terminal.As an example, the multiplexing
Device can be adaptive multiplexer.
Fig. 5 shows the circuit diagram of the digital earphone of another exemplary embodiment according to the present invention.
As shown in figure 5, the digital earphone of Fig. 5 in addition to including Fig. 4 two microphones of digital earphone, two loudspeakers,
It further include other two except earphone terminal adapter, power clock separation module, Voltage stabilizing module and pulse density modulated amplifier
Microphone and multiplexer.
Here, multiplexer can receive the clock signal of power clock separation module separation by PDMCLK terminal, and pass through
Clock signal after time-division is output to four microphones by PDMCLK1 terminal, PDMCLK2 terminal, by PDMDAT1 terminal and
PDMDAT2 terminal receives the microphone signal of four microphones, exports multiplexed digital microphone wind by MUXDAT terminal
Number.In this case, as an example, the frequency for the clock signal isolated when power clock separation module be 3.072MHz and
When each microphone is the microphone of 32 (32bit), each microphone can acquire ambient sound with the sample frequency of 24KHz,
And ambient sound is converted into digital microphone signal.
In digital earphone according to an exemplary embodiment of the present invention, it can be realized preferably by least two microphones
Noise reduction, Double-ear type sound-recording and ears hearing aid effect, the digital signal of transmission enable the digital earphone effectively to avoid common mode dry
The problems caused by disturbing and be not necessarily to internal battery, significantly reduce cost.
Fig. 6 shows the block diagram of electronic equipment according to an exemplary embodiment of the present invention.
Referring to Fig. 6, the electronic equipment includes: electronic equipment terminal adapter 10, detection module 20 and audio codec
30。
In particular, electronic equipment terminal adapter 10 sends signal to the earphone of connection, or from even for connecting earphone
The earphone connect receives signal.Here, electronic equipment terminal adapter 10 can connect digital earphone or existing any of the invention
Earphone.
As an example, in order to connect digital earphone of the invention, electronic equipment terminal adapter 10 can include: power clock end
Son, the input terminal and the output terminal.Here, power clock terminal can be used for sending digital power clock signal to the number of connection
The power clock terminal of word earphone.Input terminal can be used for receiving digital microphone wind from the input terminal of the digital earphone of connection
Number.Output terminal can be used for sending digital audio and video signals to the output terminal of the digital earphone of connection.In addition, the electronics is set
Even machine 10 may also include the ground terminal for ground connection at standby end.As an example, the electronic equipment terminal adapter 10 can be implemented
It can be implemented as inserting with USB for jack form corresponding with the 4 segmentation plugs of Fig. 2 or the electronic equipment terminal adapter 10
Corresponding USB jack form.
Detection module 20 be used for when electronic equipment terminal adapter 10 is connected with earphone, detect connection earphone whether be
Digital earphone.Here, since the resistance of common simulation earphone is 32 ohms, and the resistance of digital earphone of the invention is
Several kilohms to tens of thousands of ohms, therefore, as an example, the detection module 20 can pass through the load resistance of the earphone of detection connection
To determine whether the earphone of connection is digital earphone.Further, since the digital earphone of existing USB jack follows usb protocol, and
Digital earphone of the invention does not follow usb protocol, therefore even if the earphone terminal adapter of digital earphone of the invention is implemented as
Whether USB jack, detection module 20 can also be digital earphone of the invention come the earphone for determining connection by detection load resistance.
In addition, detection module 20 can also pass through detection when the earphone terminal adapter of digital earphone of the invention is implemented as USB jack
Whether the earphone connected follows usb protocol to determine whether connected earphone is digital earphone of the invention.
Fig. 7 shows the circuit diagram of the detection module of electronic equipment according to an exemplary embodiment of the present invention.
As shown in fig. 7, contact Com-DET does not connect with contact Com when electronic equipment terminal adapter 10 is not connected with earphone
Touching, the end Com_Open_Det, the end L_Open_Det are equal with the end VDD_Com voltage.And when electronic equipment terminal adapter 10 connects
When earphone, contact Com-DET and contact Com short circuit, the voltage of contact Com-DET is close to 0V, at this point, detection module 20 is detectable
To have earphone be inserted into electronic equipment terminal adapter 10.Moreover, when electronic equipment terminal adapter 10 connects earphone, contact L-DET
It is short-circuit with contact Left, also, the load resistance due to earphone and detection resistance RLPartial pressure leads to the voltage drop of the end L_Open_Det
It is low, it therefore, can be by the voltage at the detection end L_Open_Det come the size of the load resistance of test earphone, so that it is determined that electronics is set
Whether the earphone that standby terminal adapter 10 connects is digital earphone.
Referring again to Fig. 6, audio codec 30 can be used for detecting that the earphone of connection is digital ear when detection module 20
When machine, digital power clock signal and digital audio and video signals are output to by the digital ear by electronic equipment terminal adapter 10
Machine, and be decoded to from the received digital microphone signal of the digital earphone.
As an example, when the digital earphone includes left speaker and right loudspeaker, audio codec 30 can when
At the time of corresponding with one of rising edge and failing edge in each period of clock signal, output corresponds to the digital earphone of connection
The left channel digital audio signal of left speaker, within each period of clock signal in rising edge and failing edge in addition
One it is corresponding at the time of, output correspond to connection digital earphone right loudspeaker right channel digital audio signal.For example, sound
Frequency codec 30 can be at the time of corresponding with rising edge in each period of clock signal, and output corresponds to the number of connection
The left channel digital audio signal of the left speaker of earphone, when corresponding with failing edge within each period of clock signal
It carves, output corresponds to the right channel digital audio signal of the right loudspeaker of the digital earphone of connection.
In addition, when the earphone connected is the digital earphone with multiple-working mode, for the ease of user-selected number
The operating mode of word earphone, the electronic equipment may also include display and input unit.In particular, display can be used for working as
Choosing when detection module 20 detects that the earphone of connection is digital earphone, to the operating mode of user's show check number word earphone
?.Input unit can be used for receiving selection of the user to operating mode.At this point, what audio codec 30 can be selected according to user
Operating mode to the digital audio and video signals that will be sent to digital earphone and from the received digital microphone signal of digital earphone into
Row processing.As an example, the operating mode of the digital earphone can include: denoising mode, hearing aid mode and Double-ear type sound-recording mode.
For example, audio codec 30 can will connect from digital earphone when user selects denoising mode by input unit
The digital microphone signal of receipts is inverted, and the microphone signal after reversion is overlapped with internal digital audio and video signals
To send digital earphone for superimposed digital audio and video signals.When user selects hearing aid mode by input unit, audio
Codec 30 can enhance from the received digital microphone signal of digital earphone, and enhanced microphone signal is made
Digital earphone is sent to for digital audio and video signals.When user selects Double-ear type sound-recording mode by input unit, audio coding decoding
Device 30 is recordable from the received digital microphone signal of digital earphone, and when the audio of recording is listened in user's selection by recording
Microphone signal is sent to digital earphone as digital audio and video signals.
In addition, for the ease of exporting analog signal when detection module 20 detects connected earphone to simulate earphone,
The electronic equipment may also include that selection switch.In particular, when detection module 20 detects that the earphone of connection is digital earphone
When, selection switch by power clock terminal, the input terminal and the output terminal be connected to audio codec 30 be used to input/it is defeated
The respective terminal of digital signal out, when detection module 20 detects the earphone of connection to simulate earphone, selection is switched power supply
Clock terminal, the input terminal and the output terminal are connected to the corresponding for input/output analog signal of audio codec 30
Terminal.
Fig. 8 shows the circuit diagram of electronic equipment according to an exemplary embodiment of the present invention.
Referring to Fig. 8, the electronic equipment includes: that electronic equipment terminal adapter is (including power clock terminal (PWRCLK), defeated
Enter terminal (INPUT), output terminal (OUTPUT) and ground terminal (GND)), detection module (Insert Detector), audio compile
Decoder (Audio Codec) and selection switch (Mux).
In particular, the type of the earphone of detection module detection insertion electronic equipment terminal adapter, selection switch is according to inspection
Each terminal of electronic equipment terminal adapter is connected to the respective terminal of audio codec by the testing result for surveying module.This
In, the testing result and switch decoder (Switch Decoder) decoded choosing of module can be will test by controller (AP)
The selection result for selecting switch is sent to audio codec.
As an example, selection is switched power clock end when detection module detects that the earphone of connection is digital earphone
Son, the input terminal and the output terminal are connected to the respective terminal (example for input/output digital signal of audio codec
Such as, digital microphone clock terminal (DMICCLK), digital microphone data terminal (DMICDAT) and speaker data terminal
(SPKDAT))；When detection module detects the earphone of connection to simulate earphone, selection is switched power clock terminal, input
Terminal and output terminal are connected to the respective terminal for input/output analog signal of audio codec (for example, simulation is left
Sound channel output terminal (AnalogL), simulation microphone output terminal (AnalogMic) and simulation right channel output terminal
(AnalogR))。
Further, since when the electronic equipment connects digital earphone, the digital microphone clock end of audio codec
The digital signal of son output is also used to provide power supply signal for digital earphone other than being used to provide clock signal for digital earphone,
Therefore, in order to provide stronger power supply signal, can be believed by the number that amplifier A1 provides digital microphone clock terminal
It number amplifies.
In electronic equipment according to an exemplary embodiment of the present invention, digital earphone of the invention and existing can be compatible with
Earphone, to improve user experience.
It should be noted that above each embodiment of the invention is only exemplary, and the present invention is not limited to this.Ability
Field technique personnel are appreciated that without departing from the principles and spirit of the present invention, can change these embodiments,
Wherein, the scope of the present invention limits in claim and its equivalent.
Claims (12)
1. a kind of digital earphone, comprising: earphone terminal adapter, at least two microphones, at least two loudspeakers,
Wherein, each microphone at least two microphone acquires ambient sound, and ambient sound is converted to digital microphone
Wind number,
Wherein, the earphone terminal adapter includes:
Power clock terminal receives digital power clock signal from the external electronic device connecting with the digital earphone, so as to
Clock signal and power supply signal are provided for the digital earphone；
Input terminal receives digital microphone signal from least two microphone, and by received digital microphone signal
It is input to the external electronic device connecting with the digital earphone；
Output terminal receives digital audio and video signals, the digital audio from the external electronic device connecting with the digital earphone
Signal is used to generate the analog audio signal for being suitable at least two loudspeaker output,
Wherein, at least two loudspeaker is left speaker and right loudspeaker,
Wherein, at the time of corresponding with one of rising edge and failing edge within each period of clock signal, output terminal is from outer
Portion's electronic equipment receive correspond to left speaker left channel digital audio signal, within each period of clock signal with it is upper
At the time of rising another correspondence in edge and failing edge, output terminal is received from external electronic device corresponds to right loudspeaker
Right channel digital audio signal.
2. digital earphone as described in claim 1, further includes:
Power clock separation module carries out shaping to the received digital power clock signal of power clock terminal and goes at direct current
Reason, and digital power clock signal is separated into clock signal and power supply signal by treated.
3. digital earphone as claimed in claim 2, further includes:
Voltage stabilizing module carries out steady pressure treatment to the power supply signal of power clock separation module separation, and the power supply after pressure stabilizing is believed
Driving power number as the digital earphone.
4. digital earphone as described in claim 1, further includes:
Pulse density modulated amplifier, when output terminal receives each digital audio and video signals, by the received number of output terminal
Word audio signal is converted to analog audio signal, amplifies to analog audio signal, and according to receiving the digital audio
The analog audio signal of amplification is output to the respective speaker at least two loudspeaker at the time of signal.
5. digital earphone as described in claim 1, further includes: multiplexer,
Wherein, at least two microphone is at least two pairs of microphones,
Wherein, multiplexer answers the digital microphone signal generated from each microphone at least two pairs of microphones
With, and multiplexed digital microphone signal is transmitted to input terminal.
6. a kind of electronic equipment, comprising:
Electronic equipment terminal adapter sends signal to the earphone of connection, or receive and believe from the earphone of connection for connecting earphone
Number；
Detection module, when electronic equipment terminal adapter is connected with earphone, whether the earphone for detecting connection is digital earphone；
Audio codec, when detection module detects that the earphone of connection is number described in any one in claim 1 to 5
When word earphone, digital power clock signal and digital audio and video signals are output to by the digital ear by electronic equipment terminal adapter
Machine, and be decoded to from the received digital microphone signal of the digital earphone.
7. electronic equipment as claimed in claim 6, wherein the electronic equipment terminal adapter includes:
Power clock terminal sends the digital power clock signal at the power clock end of the digital earphone of connection
Son；
Input terminal receives digital microphone signal from the input terminal of the digital earphone of connection；
Output terminal sends digital audio and video signals to the output terminal of the digital earphone of connection.
8. electronic equipment as claimed in claim 6, wherein audio codec within each period of clock signal with it is upper
At the time of liter one of edge and failing edge are corresponding, the L channel that output corresponds to the left speaker of the digital earphone of connection is digital
Audio signal, at the time of corresponding with another in rising edge and failing edge within each period of clock signal, output
The right channel digital audio signal of the right loudspeaker of the digital earphone corresponding to connection.
9. electronic equipment as claimed in claim 6, further includes:
Display shows to user when detection module detects that the earphone of connection is the digital earphone and selects the number
The option of the operating mode of earphone；
Input unit receives selection of the user to operating mode,
Wherein, the operating mode that audio codec is selected according to user is to the digital audio that will be sent to the digital earphone
It signal and is handled from the received digital microphone signal of the digital earphone.
10. electronic equipment as claimed in claim 9, wherein the operating mode of the digital earphone includes: denoising mode, helps
Listen mode and Double-ear type sound-recording mode.
11. electronic equipment as claimed in claim 6, wherein the load electricity that the detection module passes through the earphone of detection connection
Whether the earphone for hindering to determine connection is the digital earphone.
12. electronic equipment as claimed in claim 7, further includes: selection switch,
Wherein, when detection module detects that the earphone of connection is the digital earphone, selection switch is by power clock terminal, defeated
Enter terminal and output terminal be connected to the respective terminal for input/output digital signal of audio codec,
When detection module detects the earphone of connection for simulation earphone, selection switch by power clock terminal, input terminal and
Output terminal is connected to the respective terminal for input/output analog signal of audio codec.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938520.1A CN105554606B (en) | 2015-12-15 | 2015-12-15 | Digital earphone and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510938520.1A CN105554606B (en) | 2015-12-15 | 2015-12-15 | Digital earphone and electronic equipment |
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| CN105554606A CN105554606A (en) | 2016-05-04 |
| CN105554606B true CN105554606B (en) | 2019-03-12 |
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| CN106101903B (en) * | 2016-08-09 | 2022-07-01 | 杭州纳雄科技有限公司 | Digital headset, headset system and control method thereof |
| KR102502574B1 (en) | 2016-08-12 | 2023-02-22 | 삼성전자주식회사 | Method and apparatus for processing an audio signal |
| CN106255003B (en) * | 2016-08-19 | 2019-02-26 | 华为技术有限公司 | Audio processor in the operation control method and terminal device of earphone noise reduction |
| CN106658253A (en) * | 2016-09-20 | 2017-05-10 | 立讯精密工业股份有限公司 | Earphone and implementation method thereof |
| CN106856289B (en) * | 2016-11-30 | 2020-04-07 | 南昌黑鲨科技有限公司 | Electronic equipment and circuit thereof, switching equipment and circuit thereof and signal processing system |
| CN107786741B (en) * | 2017-10-20 | 2021-01-08 | 惠州Tcl移动通信有限公司 | HAC system based on mobile terminal and implementation method thereof |
| CN108769851B (en) * | 2018-05-28 | 2020-07-28 | 广州三星通信技术研究有限公司 | Digital earphone |
| CN108810699B (en) * | 2018-06-19 | 2020-01-24 | 李金雄 | Sport Bluetooth earphone |
| CN109119844A (en) * | 2018-08-31 | 2019-01-01 | 晶晨半导体(上海)股份有限公司 | Audio Interface Unit and audio frequency apparatus |
| CN109889966B (en) * | 2019-03-07 | 2024-06-14 | 钰太芯微电子科技（上海）有限公司 | Bone conduction sensor based on micro-electromechanical system |
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| CN105554606A (en) | 2016-05-04 |
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