CN216852281U - Audio output circuit and bluetooth headset - Google Patents
Audio output circuit and bluetooth headset Download PDFInfo
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- CN216852281U CN216852281U CN202123086475.1U CN202123086475U CN216852281U CN 216852281 U CN216852281 U CN 216852281U CN 202123086475 U CN202123086475 U CN 202123086475U CN 216852281 U CN216852281 U CN 216852281U
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Abstract
The utility model provides an audio output circuit and bluetooth headset, wherein, audio output circuit includes bluetooth audio circuit, loudspeaker, audio hoisting circuit, first manual controlling part and switch circuit, through audio hoisting circuit and the switch circuit of two parallelly connected settings of establishing ties between bluetooth audio circuit and loudspeaker, the user passes through the steerable switch circuit break-make of manual controlling part, wherein, when switch circuit turns off, audio signal exports the broadcast after audio hoisting circuit audio promotes, when switch circuit switches on, audio hoisting circuit short circuit, audio signal directly exports the broadcast, realize two kinds of broadcast effects, the user can the free choice switch, need not to purchase two pairs of earphones, the purchase cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of bluetooth headset, especially, relate to an audio output circuit and bluetooth headset.
Background
The design of present earphone products all adopts bluetooth chip direct drive loudspeaker, and this design can not reach the audio frequency quality of high-fidelity, and the user can not experience high-quality audio.
If a high-quality sound effect improving module is added to improve the sound effect, the use time of the earphone can be shortened due to the small size and limited capacity of the earphone battery.
As such, the two headset solutions cannot be freely selected, resulting in increased purchase costs.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an audio output circuit aims at solving the unable free choice of traditional earphone method, leads to the problem of purchase cost increase.
The utility model provides an audio output circuit is provided to the first aspect of the embodiment, include:
a Bluetooth audio circuit to output a first audio signal;
a horn;
the audio frequency boosting circuit is connected between the Bluetooth audio frequency circuit and the Bluetooth audio frequency circuit in series and used for carrying out audio frequency conversion on the first audio frequency signal and outputting a second audio frequency signal to the loudspeaker;
the first manual control piece is used for outputting different trigger signals according to the action of a user;
the switch circuit is connected between the Bluetooth audio circuit and the Bluetooth audio circuit in series and connected with the first manual control part, and the switch circuit is correspondingly switched on and off by different trigger signals.
In one embodiment, the bluetooth audio circuit includes a bluetooth chip.
In one embodiment, the sound effect boost circuit includes a sound effect boost chip.
In one embodiment, the sound effect improving circuit is further connected with the first manual control element, and the sound effect improving mode or the corresponding on-off state is switched according to the corresponding trigger signal.
In one embodiment, the audio output circuit further comprises:
the second manual control piece is used for outputting different control signals according to the action of the user;
the sound effect lifting circuit is further connected with the second manual control element and switches the sound effect lifting mode or corresponds to on-off according to the corresponding control signal.
In one embodiment, the first manual control and the second manual control are both switch buttons.
In one embodiment, the switching circuit includes an analog switching chip.
In one embodiment, the audio output circuit further comprises a power circuit, and the power circuit is respectively connected with the bluetooth audio circuit and the sound effect improving circuit.
In one embodiment, the audio output circuit further comprises a coupling isolation circuit, the coupling isolation circuit being connected in series between the bluetooth audio circuit and the sound effect boost circuit;
and the coupling isolation circuit is used for coupling and isolating signals between the Bluetooth audio circuit and the sound effect improving circuit.
The utility model provides a second aspect provides a bluetooth headset, include as above audio output circuit.
Compared with the prior art, the embodiment of the utility model beneficial effect who exists is: foretell audio output circuit is through establishing ties the audio hoisting circuit and the switch circuit of two parallelly connected settings between bluetooth audio circuit and loudspeaker, the user passes through the steerable switch circuit break-make of manual controlling part, wherein, when switch circuit turn-off, audio signal exports the broadcast after the audio hoisting circuit audio promotes, when switch circuit switches on, the audio hoisting circuit short circuit, audio signal directly exports the broadcast, realize two kinds of broadcast effects, but the user free choice switches, need not to purchase two pairs of earphones, the purchase cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an audio output circuit according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an audio output circuit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an audio output circuit according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an audio output circuit according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an audio output circuit according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an audio output circuit according to a sixth embodiment of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example one
As shown in fig. 1, fig. 1 is a schematic structural diagram of an audio output circuit according to an embodiment of the present invention, in this embodiment, the audio output circuit includes:
the Bluetooth audio circuit 10, the Bluetooth audio circuit 10 is used for outputting a first audio signal;
a horn 20;
the audio effect improving circuit 30 is connected between the Bluetooth audio circuit 10 and the Bluetooth audio circuit 10 in series, and is used for performing audio conversion on the first audio signal and outputting a second audio signal to the loudspeaker 20;
the first manual control 40, the first manual control 40 is used for outputting different trigger signals according to the action of the user;
and the switch circuit 50 is connected between the Bluetooth audio circuit 10 and the Bluetooth audio circuit 10 in series and is connected with the first manual control element 40, and the switch circuit 50 is correspondingly switched on and off by different trigger signals.
In this embodiment, the user outputs different trigger signals through the first manual control 40, including a first trigger signal for controlling the switch circuit 50 to be turned on and a second trigger signal for controlling the switch circuit 50 to be turned off.
During operation, when the user outputs the first trigger signal through the first manual control 40, the switch circuit 50 is turned on, at this time, the switch circuit 50 is short-circuited with the sound effect improving circuit 30, the common sound effect mode is switched, and the first audio signal is directly output to the speaker 20 through the switch circuit 50.
When the user outputs the second trigger signal through the first manual control 40, the switch circuit 50 is turned off, and at this time, the switch circuit is switched to the sound effect lifting mode, the first audio signal is subjected to sound effect lifting through the sound effect lifting circuit 30 and then outputs the second audio signal to the loudspeaker 20, and the user can enjoy different sound effects such as jazz, symphony, pop, heavy bass and the like according to different music.
Through the audio boost circuit 30 and the switch circuit 50 of two parallelly connected settings of establishing ties between bluetooth audio circuit 10 and loudspeaker 20, the user realizes two kinds of broadcast effects through the steerable switch circuit 50 break-make of manual controlling part, and the user can freely select to switch, need not to purchase two sets of earphones, has reduced the purchase cost.
The first manual control 40 is used as a control switch of the switch circuit 50 to realize on-off control of the switch circuit 50, wherein the first manual control 40 may be a key, a toggle switch, a touch structure, and the like, and correspondingly, a manner of the manual control outputting the trigger signal may be a manner of long-pressing the key, toggling the toggle switch, sliding the touch screen, and the like, and the specific manner is not limited.
The sound effect boost circuit 30 may be a corresponding sound effect boost chip U2, with one or more built-in sound effect boost modes that may be correspondingly configured and selected according to sound effect boost requirements.
The switch circuit 50 may be a switch chip, a combination of multiple switches, or the like, and the specific structure is not limited.
The bluetooth audio circuit 10 may adopt a corresponding bluetooth chip U1 and a corresponding power amplifier structure, and the specific structure is not limited.
The speaker 20 includes at least one, and in the case of a bluetooth headset, the number of the speakers is not limited.
Example two
As shown in FIG. 2, in one embodiment, the Bluetooth audio circuit 10 includes a Bluetooth chip U1, the sound effect boost circuit 30 includes a sound effect boost chip U2, and the switch circuit 50 includes an analog switch chip U3.
In this embodiment, the first manual control 40 is connected with the analog switch chip U3, and controls the on-off of the analog switch chip U3, and during operation, when a user outputs a first trigger signal through the first manual control 40, the analog switch chip U3 is turned on, at this moment, the analog switch chip U3 short-circuits the sound effect promotion chip U2, and switches to a normal sound effect mode, and a first audio signal is directly output to the speaker 20 through the analog switch chip U3.
When the user passes through first manual control 40 and outputs the second trigger signal, analog switch chip U3 shuts off, at this moment, switches to the audio effect and promotes the mode, and first audio signal carries out the second audio signal of output to loudspeaker 20 after the audio effect promotes chip U2, and the user can enjoy several kinds of different audio effects according to the music of difference, like jazz, symphony, fashion, heavy bass etc..
Wherein, loudspeaker 20 includes left channel loudspeaker R _ SP and right channel loudspeaker L _ SP, correspondingly, is provided with four audio signal lines between bluetooth chip U1, the sound effect promotes chip U2, analog switch chip U3 and the loudspeaker 20 and carries out audio signal's transmission.
EXAMPLE III
As shown in fig. 3, in one embodiment, the sound effect boost circuit 30 is further connected to the first manual control 40, and switches the sound effect boost mode or on/off according to the corresponding trigger signal.
In this embodiment, the user can output different trigger signals to the sound effect improving circuit 30 and the switch circuit 50 through the manual control, for example, long press 3s to control the on-off of the switch circuit 50, and long press the back and output different trigger signals to the sound effect improving circuit 30 through the mode of point press, thereby controlling and switching the sound effect improving mode of the sound effect improving circuit 30, and switching the sound effect mode to jazz, symphony, pop, heavy bass, and the like.
Or the sound effect improving circuit 30 is controlled to be switched on and off according to the trigger signal, wherein the on-off states of the switch circuit 50 and the sound effect improving circuit 30 are kept to be opposite states, namely when the switch circuit 50 is switched off, the sound effect improving circuit 30 is switched on to realize a sound effect improving function, and when the switch circuit 50 is switched on, the sound effect improving circuit 30 is switched off to reduce power consumption and prolong the service life of power modules such as a battery.
Example four
As shown in fig. 4, in one embodiment, the audio output circuit further includes:
a second manual control unit 60, the second manual control unit 60 being configured to output different control signals according to a user's motion;
the sound effect boost circuit 30 is further connected to the second manual control 60, and switches the sound effect boost mode or corresponding on/off according to the corresponding control signal.
In this embodiment, the sound effect improving circuit 30 and the switch circuit 50 control the working state through different manual controls, wherein the first manual control 40 is used to control the on/off of the switch circuit 50, and the second manual control 60 is used to control the sound effect improving mode of the sound effect improving circuit 30, or the on/off control.
Correspondingly, the second manual control element 60 may be a key, a toggle switch, a touch structure, and the like, and correspondingly, the manner of outputting the trigger signal by the manual control element may be a long-time key press, a toggle switch, a touch screen sliding, and the like, and the specific manner is not limited.
In order to adapt to the structure of the bluetooth headset, in an embodiment, the first manual control element 40 and the second manual control element 60 are both switch keys, that is, the output switching and/or the sound effect mode switching of the audio output circuit both multiplex the switch keys of the bluetooth headset, and different trigger signals or control signals are output by operating the key times and the key durations of the switch keys, so that the functions of switching on and off, volume adjustment, audio output switching and sound effect mode switching of the bluetooth headset are realized.
EXAMPLE five
As shown in fig. 5, in one embodiment, the audio output circuit further includes a power circuit 70, and the power circuit 70 is connected to the bluetooth audio circuit 10 and the effect boost circuit 30, respectively.
In this embodiment, the power circuit 70 is used to provide working power for the bluetooth audio circuit 10 and the sound effect enhancing circuit 30, wherein the power circuit 70 may be a battery, or a power conversion circuit connected to the battery, such as a voltage stabilizing circuit, a buck-boost circuit, etc., and the specific structure is not limited.
EXAMPLE six
As shown in fig. 6, in order to further improve the playing sound effect during the sound effect improving process, in an embodiment, the audio output circuit further includes a coupling isolation circuit 80, and the coupling isolation circuit 80 is connected in series between the bluetooth audio circuit 10 and the sound effect improving circuit 30;
and a coupling isolation circuit 80 for coupling and isolating signals between the bluetooth audio circuit 10 and the sound effect boost circuit 30.
In this embodiment, the coupling isolation circuit 80 performs a coupling isolation function, so that the two systems of the bluetooth audio circuit 10 and the efficiency improvement circuit 30 are coupled and isolated by a capacitor structure, and provide a high-frequency signal path.
The coupling isolation circuit 80 may adopt a corresponding capacitor structure, as shown in fig. 6, and the coupling isolation circuit 80 includes a plurality of sets of serially connected resistors and capacitors.
Meanwhile, as shown in fig. 6, a controlled signal terminal set is further arranged on the periphery of the analog switch chip U3, and is controlled to be on and off according to a received trigger signal set1, and meanwhile, an enable signal terminal EN is also arranged on the sound effect boost chip U3, and the sound effect boost mode or the on and off state is switched according to a received control signal EN.
EXAMPLE seven
The utility model discloses still provide a bluetooth headset, this bluetooth headset includes audio output circuit, and this audio output circuit's concrete structure refers to above-mentioned embodiment, because this bluetooth headset has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
Wherein, first manual control 40 and/or second manual control 60 and loudspeaker 20 are installed on bluetooth headset's shell, and the inside circuit board that is provided with of bluetooth headset, bluetooth audio circuit 10 and effect lifting circuit 30 set up on the circuit board to be connected with loudspeaker 20 through the signal line or other connected modes that correspond, simultaneously, still be provided with bluetooth communication module on the circuit board, and realize bluetooth wireless connection with bluetooth audio circuit 10.
When the user uses the bluetooth headset, when outputting the first trigger signal through the first manual control 40, the bluetooth headset is switched to the normal sound effect mode, and the first audio signal is directly output to the speaker 20 through the switch circuit 50.
When outputting the second trigger signal through the first manual control 40, switch to the audio effect promotion mode, audio signal carries out audio effect promotion back output second audio signal to loudspeaker 20 through audio effect promotion circuit 30, and the user can enjoy several kinds of different audio effects according to the music of difference, like jazz, symphony, fashion, heavy bass etc..
Through the audio boost circuit 30 and the switch circuit 50 of two parallelly connected settings of establishing ties between bluetooth audio circuit 10 and loudspeaker 20, the user realizes two kinds of broadcast effects through the steerable switch circuit 50 break-make of manual controlling part, and the user can freely select to switch, need not to purchase two sets of earphones, has reduced the purchase cost.
In order to adapt to the structure of the bluetooth headset, in one embodiment, the first manual control element 40 and the second manual control element 60 are both switch keys, that is, the output switching and/or the sound effect mode switching of the audio output circuit both multiplex the switch keys of the bluetooth headset, and different trigger signals or control signals are output through different key times and key durations of the switch keys, so that the functions of turning on and turning off the bluetooth headset, adjusting the volume, switching the audio output and switching the sound effect mode are realized.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. An audio output circuit, comprising:
a Bluetooth audio circuit to output a first audio signal;
a horn;
the sound effect improving circuit is connected between the Bluetooth audio circuit and the Bluetooth audio circuit in series and used for performing audio conversion on the first audio signal and outputting a second audio signal to the loudspeaker;
the first manual control piece is used for outputting different trigger signals according to the action of a user;
the switch circuit is connected between the Bluetooth audio circuit and the Bluetooth audio circuit in series and connected with the first manual control part, and the switch circuit is correspondingly switched on and off by different trigger signals.
2. The audio output circuit of claim 1, wherein the bluetooth audio circuit comprises a bluetooth chip.
3. The audio output circuit of claim 1 wherein the audio boost circuit comprises an audio boost chip.
4. The audio output circuit as claimed in claim 1, wherein the audio effect boost circuit is further connected to the first manual control element, and switches the audio effect boost mode or on/off according to the corresponding trigger signal.
5. The audio output circuit of claim 1, wherein the audio output circuit further comprises:
the second manual control piece is used for outputting different control signals according to the action of the user;
the sound effect lifting circuit is further connected with the second manual control element and switches the sound effect lifting mode or corresponds to on-off according to the corresponding control signal.
6. The audio output circuit of claim 5, wherein the first manual control and the second manual control are both switch buttons.
7. The audio output circuit of claim 1, wherein the switching circuit comprises an analog switching chip.
8. The audio output circuit of claim 1, further comprising a power circuit, the power circuit being connected to the bluetooth audio circuit and the sound effect boost circuit, respectively.
9. The audio output circuit of claim 1, further comprising a coupling isolation circuit connected in series between the bluetooth audio circuit and the sound effect boost circuit;
and the coupling isolation circuit is used for coupling and isolating signals between the Bluetooth audio circuit and the sound effect improving circuit.
10. A bluetooth headset comprising an audio output circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123086475.1U CN216852281U (en) | 2021-12-09 | 2021-12-09 | Audio output circuit and bluetooth headset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123086475.1U CN216852281U (en) | 2021-12-09 | 2021-12-09 | Audio output circuit and bluetooth headset |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216852281U true CN216852281U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123086475.1U Active CN216852281U (en) | 2021-12-09 | 2021-12-09 | Audio output circuit and bluetooth headset |
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| Country | Link |
|---|---|
| CN (1) | CN216852281U (en) |
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2021
- 2021-12-09 CN CN202123086475.1U patent/CN216852281U/en active Active
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