CN214338123U

CN214338123U - Earphone power amplifier control device and vehicle

Info

Publication number: CN214338123U
Application number: CN202022829401.1U
Authority: CN
Inventors: 温亚远; 郑会强
Original assignee: Beijing Co Wheels Technology Co Ltd
Current assignee: Beijing Co Wheels Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-10-01
Anticipated expiration: 2030-11-30

Abstract

A headphone power amplifier control apparatus and a vehicle, the apparatus comprising: the earphone power amplification module; the first control module is connected with the earphone power amplification module and used for outputting sound source signals; the second control module outputs a first control signal based on the insertion of the earphone into the jack; the first input end of the delay control circuit is connected with the first control module, and the second input end of the delay control circuit is connected with the second control end module; and delaying to output the ear amplifier enabling signal based on the sound source signal and the first control signal, so that the ear amplifier enabling signal is transmitted to the earphone power amplification module later than the sound source signal. The embodiment of the utility model provides an earphone power amplifier controlling means through setting up delay control circuit, makes the ear put the enabling signal and is carried to earphone power amplification module later than the sound source signal, can make the ear put the POP that the module received the sound source signal and produce and send earlier, and earphone power amplification module enables at back, can be in order to make POP send the back, and the earphone has improved user's experience at the broadcast music.

Description

Earphone power amplifier control device and vehicle

Technical Field

The utility model belongs to the technical field of earphone, earphone power amplifier and car and specifically relates to an earphone power amplifier controlling means and vehicle are related to.

Background

With the development of automobile technology, from traditional functional automobiles to today's intelligent automobiles, vehicle-mounted infotainment systems all have earphone interfaces for use by on-board personnel. The earphone is driven by an earphone power amplification module (called an ear amplifier module for short) on the vehicle-mounted entertainment host, but some ear amplifier modules suddenly generate direct current jump when a music signal is just received, so that the ear amplifier modules generate POP sound, and at the moment, because the user inserts the earphone, the user can hear the POP sound, and the POP sound is unacceptable for music enthusiasts.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

The utility model aims at providing an earphone power amplifier controlling means and vehicle, the embodiment of the utility model provides an earphone power amplifier controlling means through setting up delay control circuit, makes the ear put the enable signal and is carried to earphone power amplification module later than sound source signal, can make earphone power amplification module receive sound source signal earlier, produces POP earlier, after producing the release of POP sound, earphone power amplification module is the ability of after, can be so that POP sends the back, the earphone is at the broadcast music to user's experience has been improved.

(II) technical scheme

In order to solve the above problem, the first aspect of the present invention provides an earphone power amplifier control device, which includes: the earphone power amplification module; the first control module is connected with the earphone power amplification module and used for outputting sound source signals; the second control module outputs a first control signal based on the insertion of the earphone into the jack; the first input end of the delay control circuit is connected with the first control module, and the second input end of the delay control circuit is connected with the second control module; outputting an ear amplifier enabling signal based on the sound source signal and the first control signal, so that the ear amplifier enabling signal is transmitted to the earphone power amplification module later than the sound source signal.

Further, the delay control circuit includes: a conducting module, a first input end of which is connected with the first control module, a second input end of which is connected with the second control module, and a voltage signal is output based on the sound source signal and the first control signal; and the first time delay module is connected with the output end of the conduction module and outputs the ear amplifier enabling signal based on the fact that the voltage accumulated by the voltage signal reaches a first preset value.

Further, the conducting module includes: the control end of the first switch is connected with the first control module, the input end of the first switch is connected with the second control module, and the output end of the first switch is connected with the first delay module; the first switch is switched on based on the sound source signal received by the control end.

Further, the conducting module includes: a power supply unit; a first delay control unit, a first input end of which is connected with the output end of the first control module, a second input end of which is connected with the output end of the second control module, and outputting a second control signal based on the sound source signal and the first control signal; the second delay control unit is respectively connected with the output end of the first delay control unit, the output end of the power supply unit and the input end of the first delay module; the second delay control unit controls the power supply unit to be conducted with the first delay module based on the received second control signal, so that the power supply unit outputs a voltage signal to the first delay module.

Further, the first delay control unit comprises a first triode and a second triode; the base electrode of the first triode is connected with the output end of the first control module, the emitter electrode of the first triode is connected with the collector electrode of the second triode, and the collector electrode of the first triode is connected with the input end of the second delay control unit; and the base electrode of the second triode is connected with the output end of the second control module, and the emission set is connected to the ground wire.

Further, the second delay control unit includes a third triode; and the base electrode of the third triode is respectively connected with the collector electrode of the first triode, the emitter electrode of the third triode is connected with the ground wire, and the collector electrode of the third triode is respectively connected with the output end of the power supply unit and the input end of the first delay module.

Further, the first delay module comprises a first capacitor and a first resistor; one end of the first resistor is connected with the collector of the second triode, and the other end of the first resistor is respectively connected with the first electrode of the first capacitor and the earphone power amplification module; the second electrode of the first capacitor is connected to ground.

Further, the method also comprises the following steps: the input end of the second delay module is connected with the output end of the first control module, and the output end of the second delay module is connected with the first input end of the delay control circuit; and the second time delay module is communicated with the time delay control circuit based on the fact that the voltage accumulated by the sound source signal reaches a second preset value.

Further, the second delay module comprises a second capacitor and a second resistor; one end of the second resistor is connected with the output end of the first control module, and the other end of the second resistor is respectively connected with the first electrode of the second capacitor and the first input end of the delay control circuit; the second electrode of the second capacitor is connected to ground.

Further, the method also comprises the following steps: and one end of the third resistor is respectively connected with the output end of the delay control circuit and the input end of the earphone power amplification module, and the other end of the third resistor is connected to the ground wire.

According to a second aspect of the present invention, there is also provided a vehicle including the earphone power amplifier control apparatus of the first aspect described above.

(III) advantageous effects

The above technical scheme of the utility model has following profitable technological effect:

the embodiment of the utility model provides an earphone power amplifier controlling means through setting up delay control circuit, makes the ear put the enabling signal and is carried to earphone power amplification module later than the sound source signal, can make earphone power amplification module receive the sound source signal earlier, and the POP that produces earlier is after the POP sound release that produces, and earphone power amplification module is after the enabling, can be so that POP sends the back, and the earphone has improved user's experience at the broadcast music.

Drawings

Fig. 1 is a diagram of an earphone power amplifier control apparatus according to a first embodiment of the present invention;

fig. 2 is a diagram of an earphone power amplifier control device according to a second embodiment of the present invention;

fig. 3 is a headphone power amplifier control apparatus according to a third embodiment of the present invention;

fig. 4 is a headphone power amplifier control apparatus according to a fourth embodiment of the present invention.

Drawings

1: the earphone power amplification module; 2: a first control module; 3: a second control module; 4: a delay control circuit; 41: a conducting module; 411: a power supply unit; 412: a first delay control unit; 413: a second delay control unit; 42: a first delay module; 5: an earphone interface; 6: a decoding device; 7: a second delay module; q1: a first triode; q2: a second triode; q3: a third triode; c1: a first capacitor; c2: a second capacitor; r1: a first resistor; r2: a second resistor; r3, third resistance; r4: a fourth resistor; r5: a fifth resistor; r6: a sixth resistor; r7: a seventh resistor; r8: an eighth resistor; r9 is ninth resistor; r10: a tenth resistor; r11: an eleventh resistor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Fig. 1 is a diagram of an earphone power amplifier control device according to a first embodiment of the present invention.

As shown in fig. 1, the headphone power amplifier control apparatus includes: the earphone power amplification module 1, the first control module 2, the second control module 3, the delay control circuit 4 and the earphone interface 5.

The first control module 2 is connected with the earphone power amplification module 1 and used for outputting sound source signals; the second control module 3 outputs a first control signal based on the insertion of the earphone into the jack; the first input end of the delay control circuit 4 is connected with the first control module 2, and the second input end of the delay control circuit is connected with the second control module 3; outputting an ear amplifier enabling signal based on the sound source signal and the first control signal, so that the ear amplifier enabling signal is transmitted to the earphone power amplification module 1 later than the sound source signal.

In a specific embodiment, the headset power amplification module 1 amplifies the sound source signal after receiving the enable signal, and the amplified sound source signal plays audio in the headset through the headset interface 5.

In a specific embodiment, when the earphone is inserted into the jack, the electrode of the interface of the earphone is connected with the earphone, the electrode generates a signal and transmits the signal to the second control module, and the second control module determines that the earphone is inserted into the jack according to the received signal sent by the electrode and outputs the first control signal.

It will be appreciated that the typical scenario for headphones to play music is that the user first plugs in the headphones and then issues an instruction to play the audio. For the control device, the control device can directly output the enabling signal of the ear amplifying module to the earphone power amplifying module according to the insertion of the earphone into the jack, and the enabling of the earphone power amplifying device is kept. The control device outputs the sound source signal to the earphone power amplification module based on the user instruction (for example, the user clicks a play audio button or clicks a screen to start playing), the earphone power amplification module amplifies the sound source signal, and the amplified sound source signal is played through the earphone interface, so that the audio playing is realized.

Through research, the earphone power amplification module can produce the POP sound in the moment of receiving the sound source signal, and because the earphone power amplification module receives the enable signal earlier, later receives the sound source signal, the earphone power amplification module can be to the sound source signal amplification, leads to the user to hear the POP sound.

It should be understood that, in the present embodiment, the delay control circuit is provided, and the output of the eardrop enable signal later than the sound source signal can be realized through the connection relationship of the elements in the hardware circuit and the output control of the hardware signal.

The embodiment of the utility model provides an earphone power amplifier controlling means through setting up delay control circuit, makes the ear put the enabling signal and is carried to earphone power amplification module later than the sound source signal, can make the ear put the POP that the module received the sound source signal and produce and send earlier, and earphone power amplification module enables at back, can be in order to make POP send the back, and the earphone has improved user's experience at the broadcast music.

In some embodiments, the audio source signal output by the first control module 2 to the headphone power amplifying module 1 includes an IIS word clock signal, an IIS bit clock signal, and IIS audio data.

In some embodiments, the audio source signal output by the first control module 3 to the delay control circuit 4 is an IIS word clock signal.

In some embodiments, the above-mentioned headphone power amplifier control means further comprises decoding means 6. Since some devices may output the sound source signal from the first control module as a digital signal and some headphone power amplifying modules can only recognize an analog signal, a decoding device 6 is disposed between the first control module 2 and the headphone power amplifying module, and the decoding device 6 is configured to convert the sound source signal output from the first control module 2 from a digital signal to an analog signal and then transmit the sound source signal in the form of an analog signal to the headphone power amplifying module 1. Optionally, the sound source signals output by the decoding apparatus 6 in the form of analog signals include a left channel signal and a right channel signal.

Optionally, the decoding device 6 is, for example, a decoding chip.

In some optional embodiments, the first control module is, for example, an SOC system chip of the vehicle, and the second control module is, for example, an MCU chip of the vehicle.

In some alternative embodiments, the first control module and the second control module may also be implemented by one chip.

Fig. 2 is a diagram of an earphone power amplifier control device according to a second embodiment of the present invention.

As shown in fig. 2, in the headphone power amplifier control apparatus, the delay control circuit 4 includes: a conducting module 41, a first input end of which is connected to the first control module 2, a second input end of which is connected to the second control module 3, and which outputs a voltage signal based on the sound source signal and the first control signal; and the first delay module 42 is connected with the output end of the conduction module 41, and outputs the ear drop enabling signal based on the voltage accumulated by the voltage signal reaching a first preset value.

In an alternative embodiment, the pass-through module 41 includes: a first switch. The control end of the first switch is connected with the first control module 2, the input end of the first switch is connected with the second control module 3, and the output end of the first switch is connected with the first delay module 42; the first switch is switched on based on the sound source signal received by the control end.

In this embodiment, when the first switch is turned on, the input terminal of the first switch is connected to the output terminal, that is, the first control signal output by the second control module is directly input to the first delay module 42, so that the first delay module 42 outputs the eardrop enable signal according to the fact that the voltage accumulated by the first control signal reaches the first preset value.

Fig. 3 is a headphone power amplifier control apparatus according to a third embodiment of the present invention.

As shown in fig. 3, in the headphone power amplifier control apparatus, the conducting module 41 includes: a power supply unit 411, a first delay control unit 412, and a second delay control unit 413.

The power supply unit is used for outputting a voltage signal.

A first input end of the first delay control unit 412 is connected to the output end of the first control module 2, and a second input end of the first delay control unit is connected to the output end of the second control module 3. The first delay control unit 412 outputs a second control signal based on the audio source signal and the first control signal.

And a second delay control unit 413, which is respectively connected to the output end of the first delay control unit 412, the output end of the power supply unit 411, and the input end of the first delay module. The second delay control unit 413 controls the power supply unit 411 and the first delay module 413 to be conducted based on the second control signal, so that the power supply unit 411 outputs a voltage signal to the first delay module 413.

As shown in fig. 4, the first delay control unit 412 includes a first transistor Q1 and a second transistor Q2.

One of a first triode Q1 and a second triode Q2, the base of which is connected with the output end of the first control module 2, the emitter of which is connected with the collector of the second triode Q2, and the collector of which is connected with the input end of the second delay control unit 413; the other of the first transistor Q1 and the second transistor Q2 has a base connected to the output terminal of the second control module 3, and an emission set connected to ground. That is, in the embodiment shown in fig. 4, the positions of the first control module 2 and the second control module 3 may be interchanged.

Specifically, in the embodiment shown in fig. 4, a base of the first transistor Q1 is connected to the output terminal of the first control module 2, an emitter is connected to a collector of the second transistor Q2, and a collector is connected to the input terminal of the second delay control unit 413.

The base of the second triode Q2 is connected with the output end of the second control module 3, and the emission set is connected to the ground wire.

Of course, it may also be provided that the base of the first transistor Q1 is connected to the output terminal of the second control module 3, the emitter set is connected to the ground, the collector is connected to the input terminal of the second delay control unit 413, the base of the second transistor Q2 is connected to the output terminal of the first control module 2, the emitter set is grounded, and the collector is connected to the emitter set of the first transistor Q1.

In the present embodiment, when the second control module generates the first control signal based on the insertion of the earphone into the jack, the first control signal is inputted to the base of Q2, and since the emitter set of Q2 is grounded, Q2 is turned on and the emitter set of Q1 is grounded through the collector and the emitter set of Q2. When the first control module 2 receives a music playing command and outputs a sound source signal to the base of the Q1, the emitter set of the Q1 is grounded, so that the Q1 is turned on, i.e., the collector of the Q1 is grounded through the emitter set.

In some embodiments, the second delay control unit 413 includes a third transistor Q3; the base of the third transistor Q3 is connected to the collector of the first transistor Q1, the emitter is connected to the ground, and the collector is connected to the output of the power supply unit 411 and the input of the first delay module 42.

In the embodiment, since the collector of Q1 is grounded, since the collector of Q1 is connected to the base of Q3, and the base of Q3 is equivalent to ground, so that Q3 is disconnected, and at this time, the collector of Q3 is not grounded, the power supply unit is connected to the first delay module 42 through the collector of Q3, and the power supply unit 411 can transmit the voltage signal to the first delay module 42.

It can be understood that when Q1 is not turned on, Q3 is turned on because the base of Q3 is connected to the power supply unit 41, Q3 is turned on and the collector of Q3 is equivalent to being grounded through the emitter collector, and since the collector of Q3 is connected to the first delay module 42, the first delay module 42 does not receive a voltage signal and therefore does not output an eardrop enable signal.

In some embodiments, the first delay module 42 includes a first capacitor C1 and a first resistor R1; the first resistor R1 is respectively connected to the power supply unit 411 and the collector of the second transistor Q2, and the other end of the first resistor R1 is respectively connected to the first electrode of the first capacitor C1 and the headset power amplifying module 1; the second electrode of the first capacitor C1 is connected to ground.

In this embodiment, the voltage signal generated by the power supply unit 411 is stored in the C1 through the first resistor R1, and when the voltage amount stored in the C1 reaches the first preset value, the eardrop enable signal is output.

It is understood that, in the present embodiment, the first delay module 42 includes an RC circuit, the time parameter of the RC circuit can be set to (the first resistance value R × the first capacitance value C) as the first preset time, and the specific values of the capacitance and the resistance can be derived through a reverse direction (for example, a resistance model is empirically selected to obtain a determined resistance value, and then the model of the capacitance is determined according to the above formula), so that the first preset value can be derived.

In some preferred embodiments, the first preset time is 100 ms.

It should be noted that research shows that when the enable signal received by the earphone power amplification module is within 100ms later than the sound source signal, the human ear cannot feel the delay of audio playing, and the audio signal reaches the earphone power amplification module and a POP sound is generated instantly, so that after the earphone power amplification module receives the sound source signal first, the POP sound is released, and then the audio signal is amplified based on the received enable signal, so that a user cannot feel the delay of audio playing while the user cannot hear the POP sound, and the user experience is improved.

In some embodiments, further comprising: the input end of the second delay module 7 is connected with the output end of the first control module 2, and the output end of the second delay module is connected with the first input end of the delay control circuit 4; and the second delay module 7 is connected with the delay control circuit 4 based on that the voltage accumulated by the sound source signal reaches a second preset value.

In particular, the second delay module 7 comprises a second capacitor C2 and a second resistor R2;

one end of the second resistor R2 is connected to the output end of the first control module 2, and the other end is connected to the first electrode of the second capacitor C2 and the first input end of the delay control circuit 4; the second electrode of the second capacitor C2 is connected to ground.

In this embodiment, the second delay module is equivalent to another RC circuit, and the sum of the time parameter of the first delay module and the time parameter of the second delay module does not exceed 100ms, and the values of the first resistor, the first capacitor, the second resistor, and the second capacitor are reversely derived, that is, the first preset value and the second preset value can be derived. For example, the time parameter of the first delay module is determined to be a value, then the model of the first resistor is selected, and then the model of the first capacitor is determined. And then, determining the time parameter of the second delay module, selecting the model of the second resistor, and finally determining the model of the second capacitor.

Optionally, the time parameter of the first delay module is 50ms, and the time parameter of the second delay module is 50 ms.

In some embodiments, the earphone power amplifier control device further includes a third resistor R3, one end of the third resistor R3 is connected to the output end of the delay control circuit 4 and the input end of the earphone power amplification module 1, and the other end is connected to ground.

In the present embodiment, the resistor R3 of the third resistor R3 provided in the headset power amplifier control device can remove noise between the first delay module 42 and the headset power amplifying module 1, so that the circuit is more stable.

In some embodiments, the base of the first transistor Q1 is connected to the output of the second delay module 7 through a resistor R10, and the emitter set of the first transistor Q1 is connected to the base thereof through a resistor R11, which shunts Q1 and protects the transistor Q1.

Optionally, the base of the second transistor Q2 is connected to the output terminal of the second control module 3 through a resistor R4, and the emitter set of the second transistor Q2 is connected to the base thereof through a resistor R5, so as to shunt the transistor Q2 and protect the transistor Q2.

Optionally, the base of the third transistor Q3 is connected to the emitter of the transistor Q3526 through resistors R7 and Q1, and the emitter of the third transistor Q3 is connected to the base thereof through a resistor R8, so as to shunt the transistor Q3 and protect the transistor Q3.

In some embodiments, the first transistor Q1, the second transistor Q2, and the third transistor Q3 are all bipolar transistors.

In some embodiments, the power supply unit 411 is connected to the collector of the first transistor Q1 through the sixth resistor R6, so as to avoid the direct grounding of the power supply unit 411 due to the conduction of Q1, and to protect the power supply unit 411.

In some embodiments, the power supply unit 411 is connected to the collector of the third transistor Q3 through the ninth resistor R9, so as to avoid the direct grounding of the power supply unit 411 due to the disconnection of Q3, and to protect the power supply unit 411.

It is understood that the power supply unit 411 is, for example, a power supply.

The operation relationship between the elements in the headphone power amplifier control device according to the fourth embodiment will be described in detail below with reference to fig. 4.

As shown in fig. 4, when the second control module 3 detects that the earphone is inserted, the second control module 3 outputs a first control signal (for example, a high level signal) to the base of Q2, when the first control module 2 receives an instruction input by a user to start playing a song, the first control module 2 outputs a word clock signal of IIS (also referred to as a word clock signal of I2S) to the second delay module 7, the word clock signal of IIS passes through the second delay module 7, the level of the left side of the resistor R2 is slowly raised, and similarly, the voltage stored in the capacitor C2 is slowly raised, and the voltage stored in the capacitor C2 outputs a high level signal as a second preset value, where the second preset value can be adjusted or changed according to R2 and C2 by setting.

When the left side of the resistor R10 receives the high level signal output by the second delay module 7, Q1 is turned on, and at this time, Q1 and Q2 are both turned on, that is, the collector of Q1, the emission set of Q1, the collector of Q2, and the emission set of Q2 are all equivalent to ground, so that the voltage at the intersection of the emission sets of R6, R7, and Q1 is pulled to ground, resulting in that Q3 is turned off. Since Q3 is turned off, the power supply unit 411 is connected to the capacitor C1 through R9 and R1, the power supply unit 411 outputs a voltage signal to C1, and the level of the right side of the resistor R1 also rises slowly, that is, the first delay module 42 outputs a gradually high level signal slowly, and only pure music can be heard through the earphone when the output high level signal is high enough to make the earphone power amplifying module 1 in an operating state. In the above process, R3 is mainly used to eliminate the low level signal output by the first delay module 42 that cannot make the earphone power amplifying module work, so as to avoid noise.

An embodiment of the present invention further provides a vehicle, which includes the earphone power amplifier control device provided by the above embodiment.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. An earphone power amplifier control apparatus, comprising:

an earphone power amplification module (1);

the first control module (2) is connected with the earphone power amplification module (1) and is used for outputting sound source signals;

a second control module (3) outputting a first control signal based on the earphone insertion jack;

a delay control circuit (4) having a first input connected to the first control module (2) and a second input connected to the second control module (3); outputting an eardrop enable signal based on the audio source signal and the first control signal, such that the eardrop enable signal is delivered to the headphone power amplification module (1) later than the audio source signal.

2. The headphone power amplifier control device according to claim 1, wherein the delay control circuit (4) includes:

a conducting module (41) having a first input terminal connected to the first control module (2) and a second input terminal connected to the second control module (3), and outputting a voltage signal based on the sound source signal and the first control signal;

and the first time delay module (42) is connected with the output end of the conduction module (41) and outputs the ear amplifier enabling signal based on the fact that the voltage accumulated by the voltage signal reaches a first preset value.

3. The headphone power amplifier control device according to claim 2, characterized in that the conducting module (41) comprises:

the control end of the first switch is connected with the first control module (2), the input end of the first switch is connected with the second control module (3), and the output end of the first switch is connected with the first delay module (42);

the first switch is switched on based on the sound source signal received by the control end.

4. The headphone power amplifier control device according to claim 2, characterized in that the conducting module (41) comprises:

a power supply unit (411);

a first delay control unit (412) having a first input terminal connected to the output terminal of the first control module (2) and a second input terminal connected to the output terminal of the second control module (3), and outputting a second control signal based on the audio source signal and the first control signal;

the second delay control unit (413) is respectively connected with the output end of the first delay control unit (412), the output end of the power supply unit (411) and the input end of the first delay module; the second delay control unit (413) controls the power supply unit (411) and the first delay module (42) to be conducted based on the received second control signal, so that the power supply unit (411) outputs the voltage signal to the first delay module (42).

5. The headphone power amplifier control apparatus as defined in claim 4, wherein the first delay control unit (412) comprises a first transistor (Q1) and a second transistor (Q2);

one of the first triode (Q1) and the second triode (Q2) has a base connected with the output end of the first control module (2), an emitter connected with the collector of the second triode (Q2), and a collector connected with the input end of the second delay control unit (413);

the other one of the first triode (Q1) and the second triode (Q2) is connected with the output end of the second control module (3) at the base electrode, and the emission set is connected to the ground wire.

6. The headphone power amplifier control apparatus as defined in claim 5, wherein the second delay control unit (413) comprises a third transistor (Q3);

the base electrode of the third triode (Q3) is connected with the collector electrode of the triode connected with the first control module (2), the emitter electrode of the triode is connected with the ground wire, and the collector electrode of the triode is respectively connected with the output end of the power supply unit (411) and the input end of the first delay module (42).

7. The headphone power amplifier control apparatus as recited in claim 6,

the first delay module (42) comprises a first capacitor (C1) and a first resistor (R1);

one end of the first resistor (R1) is connected with the collector of the second triode (Q2), and the other end of the first resistor (R1) is respectively connected with the first electrode of the first capacitor (C1) and the earphone power amplification module (1);

the second electrode of the first capacitor (C1) is connected to ground.

8. The headphone power amplifier control apparatus as claimed in any one of claims 1 to 7, further comprising:

the input end of the second delay module (7) is connected with the output end of the first control module (2), and the output end of the second delay module is connected with the first input end of the delay control circuit (4); and the second delay module (7) is communicated with the first input end of the delay control circuit (4) based on that the voltage accumulated by the sound source signal reaches a second preset value.

9. The headphone power amplifier control apparatus as recited in claim 8,

the second delay module (7) comprises a second capacitor (C2) and a second resistor (R2);

one end of the second resistor (R2) is connected with the output end of the first control module (2), and the other end of the second resistor (R2) is respectively connected with a first electrode of the second capacitor (C2) and the first input end of the delay control circuit (4);

the second electrode of the second capacitor (C2) is connected to ground.

10. The headphone power amplifier control apparatus as claimed in any one of claims 1-7 and 9, further comprising:

and one end of the third resistor (R3) is respectively connected with the output end of the delay control circuit (4) and the input end of the earphone power amplification module (1), and the other end of the third resistor is connected to the ground wire.

11. The headphone power amplifier control apparatus as recited in claim 8, further comprising:

12. A vehicle comprising a headset power amplifier control as claimed in any one of claims 1 to 11.