CN205039957U - Earphone and audio switching circuit thereof - Google Patents
Earphone and audio switching circuit thereof Download PDFInfo
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- CN205039957U CN205039957U CN201520631181.8U CN201520631181U CN205039957U CN 205039957 U CN205039957 U CN 205039957U CN 201520631181 U CN201520631181 U CN 201520631181U CN 205039957 U CN205039957 U CN 205039957U
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Abstract
The utility model belongs to the technical field of the electron, especially, relate to an earphone and audio switching circuit thereof. This circuit connection is between the interface unit and left and right power amplifier unit of earphone, including four -axle linkage switch, first audio unit and a second audio unit, the four -axle linkage switch comprises four single -pole double -throw, and the movable contact of four switches connects the L end of interface unit, R end and left and right power amplifier unit's input respectively, and first audio unit connection is between the stationary contact of first switch and third switch, and the unit connection of second audio is between the stationary contact of second switch and fourth switch. Through the utility model provides an earphone and audio switching circuit thereof, through the switching of a four -axle linkage switch, control sets up the first audio unit and the break -make of second audio unit between interface unit and power amplifier unit, and realization earphone power amplifier unit's output is switched over between former sound harmony supper bass. The circuit is simple reliable, with low costs and easy realization.
Description
Technical field
The utility model belongs to electronic technology field, particularly relates to a kind of earphone and audio commutation circuit thereof.
Background technology
In recent years, along with the develop rapidly of electronics technology industry, various electronic product is designed towards compact trend invariably, contributes to user and carries with and operate use.With voice output, namely earphone is a kind of audio frequency apparatus that people comparatively commonly use in daily life, and it is easy to carry, and is widely used in conjunction with audio-frequence player devices such as MP3, MP4, mobile phone, broadcast receivers.People can carry with these audio-frequence player devices, are listened to the audio-frequency information of various audio program or oneself typing by earphone at any time.But, because the requirement of people to amusement equipment is more and more higher, existing this earphone can not meet the demand of people's entertainment life completely, for music-lover or film appreciator, there's no one who doesn't or isn't pursue audio when participating in the cintest to present, but earphone on the market is generally only equipped with two loud speakers, in order to provide the source of sound of two sound channels to export, it cannot represent completely in the performance of supper bass.
Utility model content
In view of this, first namely the purpose of this utility model is the audio commutation circuit providing a kind of earphone, to realize the switching of former sound and supper bass in earphone, meets consumers' demand.
The utility model realizes like this, a kind of audio commutation circuit of earphone, be connected between the interface unit of earphone and left and right power amplifier unit, described interface unit comprises L end, R end and G end, and described audio commutation circuit comprises a four-axle linkage switch, the first audio unit and the second audio unit;
Described four-axle linkage switch is made up of four single-pole double-throw switch (SPDT)s, the moving contact of four switches connects the input of described L end, R end and left and right power amplifier unit respectively, described first audio unit is connected between the fixed contact of the first switch and the fixed contact of the 3rd switch, and described second audio unit is connected between the fixed contact of second switch and the fixed contact of the 4th switch.
Further, described first audio unit comprises resistance R1, resistance R3 and the first band stop filter; Described resistance R1 is connected between the first fixed contact of the first switch and the first fixed contact of the 3rd switch, described resistance R3 is connected between the second fixed contact of the first switch and the second fixed contact of the 3rd switch, between the second fixed contact that described first band stop filter is connected to the 3rd switch and ground; Described second audio unit comprises resistance R2, resistance R4 and the second band stop filter; Described resistance R2 is connected between the first fixed contact of second switch and the first fixed contact of the 4th switch, described resistance R4 is connected between the second fixed contact of second switch and the second fixed contact of the 4th switch, between the second fixed contact that described second band stop filter is connected to the 3rd switch and ground.
Further, described first band stop filter comprises inductance L 1 and electric capacity C1; Second fixed contact of the first termination the 3rd switch of described inductance L 1, the second end of described inductance L 1 is by electric capacity C1 ground connection; Described second band stop filter comprises inductance L 2 and electric capacity C2; Second fixed contact of the first termination the 4th switch of described inductance L 2, the second end of described inductance L 2 is by electric capacity C1 ground connection.
Particularly, the resistance of described resistance is 8-15 Ω, described electric capacity between 22-100uF, described inductance between 18-25uH, and for Q value lower than 10 wire-wound inductor.
On the other hand, the purpose of this utility model is also to provide a kind of earphone.This kind of earphone comprises interface unit and two, left and right power amplifier unit, and described interface unit comprises L end, R end and G end.Described earphone also comprises one and is connected to audio commutation circuit between the interface unit of earphone and left and right power amplifier unit, and described audio commutation circuit comprises a four-axle linkage switch, the first audio unit and the second audio unit; Described four-axle linkage switch is made up of four single-pole double-throw switch (SPDT)s, the moving contact of four switches connects the input of described L end, R end and left and right power amplifier unit respectively, described first audio unit is connected between the fixed contact of the first switch and the fixed contact of the 3rd switch, and described second audio unit is connected between the fixed contact of second switch and the fixed contact of the 4th switch.
Further, described first audio unit comprises resistance R1, resistance R3 and the first band stop filter; Described resistance R1 is connected between the first fixed contact of the first switch and the first fixed contact of the 3rd switch, described resistance R3 is connected between the second fixed contact of the first switch and the second fixed contact of the 3rd switch, between the second fixed contact that described first band stop filter is connected to the 3rd switch and ground; Described second audio unit comprises resistance R2, resistance R4 and the second band stop filter; Described resistance R2 is connected between the first fixed contact of second switch and the first fixed contact of the 4th switch, described resistance R4 is connected between the second fixed contact of second switch and the second fixed contact of the 4th switch, between the second fixed contact that described second band stop filter is connected to the 3rd switch and ground.
Further, described first band stop filter comprises inductance L 1 and electric capacity C1; Second fixed contact of the first termination the 3rd switch of described inductance L 1, the second end of described inductance L 1 is by electric capacity C1 ground connection; Described second band stop filter comprises inductance L 2 and electric capacity C2; Second fixed contact of the first termination the 4th switch of described inductance L 2, the second end of described inductance L 2 is by electric capacity C1 ground connection.
Particularly, the resistance of described resistance is 8-15 Ω, described electric capacity between 22-100uF, described inductance between 18-25uH, and for Q value lower than 10 wire-wound inductor.Described four-axle linkage switch is slide plate switch, and the design of its line traffic control is on earphone signal line.
The earphone provided by the utility model and audio commutation circuit thereof, by the switching of a four-axle linkage switch, control the break-make of the first audio unit and the second audio unit be arranged between interface unit and power amplifier unit, the output realizing earphone power amplifier unit switches between former sound and supper bass.Circuit is simple and reliable, cost low and be easy to realize.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the audio commutation circuit of the earphone that the utility model embodiment provides;
Fig. 2 is the structural representation of the audio commutation circuit of the earphone that the utility model one preferred embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 is the structured flowchart of the audio commutation circuit of the earphone that the utility model embodiment provides; For convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
An audio commutation circuit for earphone, be connected between the interface unit 100 of earphone and left power amplifier unit 200, right power amplifier unit 300, interface unit comprises L end, R end and G end.This audio commutation circuit comprises a four-axle linkage interrupteur SW 1, first audio unit 10 and the second audio unit 20, and four-axle linkage interrupteur SW 1 is made up of four single-pole double-throw switch (SPDT)s SW11, SW12, SW13 and SW14.The L of the moving contact difference connection interface unit 100 of four switches holds, R end, the input of left power amplifier unit 200 and the input of right power amplifier unit 300, first audio unit 10 is connected between the fixed contact of the first interrupteur SW 11 and the fixed contact of the 3rd interrupteur SW 13, and the second audio unit 20 is connected between the fixed contact of second switch SW12 and the fixed contact of the 4th interrupteur SW 14.
According to the audio commutation circuit of the earphone that the utility model embodiment provides, by the control of a four-axle linkage switch, make to be arranged on the first audio unit between interface unit and power amplifier unit and the second audio unit realizes the switching of earphone between former sound and supper bass.Circuit is simple and reliable, cost low and be easy to realize.
Fig. 2 is the structural representation of the audio commutation circuit of the earphone that the utility model one preferred embodiment provides.Same, for convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
As a preferred embodiment, the first audio unit 10 comprises resistance R1, resistance R3 and the first band stop filter 11; Resistance R1 is connected between the first fixed contact of the first interrupteur SW 11 and the first fixed contact of the 3rd interrupteur SW 13, resistance R3 is connected between the second fixed contact of the first interrupteur SW 11 and the second fixed contact of the 3rd interrupteur SW 13, between the second fixed contact that the first band stop filter 11 is connected to the 3rd interrupteur SW 13 and ground; Second audio unit 20 comprises resistance R2, resistance R4 and the second band stop filter 21; Resistance R2 is connected between first fixed contact of second switch SW12 and the first fixed contact of the 4th interrupteur SW 14, resistance R4 is connected between second fixed contact of second switch SW12 and the second fixed contact of the 4th interrupteur SW 14, between the second fixed contact that the second band stop filter 21 is connected to the 3rd interrupteur SW 13 and ground.
When specific implementation, the first band stop filter 11 can comprise inductance L 1 and electric capacity C1; Second fixed contact of the first termination the 3rd interrupteur SW 13 of inductance L 1, the second end of inductance L 1 is by electric capacity C1 ground connection; Second band stop filter 21 comprises inductance L 2 and electric capacity C2; Second fixed contact of the first termination the 4th interrupteur SW 14 of inductance L 2, the second end of inductance L 2 is by electric capacity C1 ground connection.
For the audio commutation circuit of the earphone shown in Fig. 2, when the moving contact of four-axle linkage switch all receives the first fixed contact, under now earphone is operated in normal former sound audio pattern, the audio signal of left and right acoustic channels is pushed directly to left and right power amplifier unit by resistance R1 and R2 and plays original music; When the moving contact of four-axle linkage switch all receives the second fixed contact, under now earphone is operated in low sound effect pattern, the audio signal of left and right acoustic channels is pushed to left and right power amplifier unit playback supper bass music after band stop filter process.
In the present embodiment, the LC series resonant circuit comparative audio letter bow output be made up of inductance and capacitances in series is a band stop filter, music signal parts amplitude identical with LC resonance frequency in music frequency is conducting to ground by it, be equivalent to the signal of certain frequency band in attenuation audio scope, the bass of music and treble portion is allowed to show more obvious, stress strengthens to allow user feel, high pitch is clear.And, resistance R1, R2, R3 and R4 are the balance resistance under normal former sound pattern and supper bass pattern, regulate their resistance can the degree of balance of shaping modes and sound channel, inductance L 1 and L2 can regulate high pitch by frequency, what electric capacity C1 and C2 can regulate bass part passes through frequency.In order to obtain best acoustics frequency response and auditory effect, in specific implementation process, the resistance of optional resistance is between 8-15 Ω, electric capacity between 22-100uF, inductance between 18-25uH, and for Q value lower than 10 wire-wound inductor.
On the other hand, the utility model embodiment also provides a kind of earphone, and this kind of earphone comprises interface unit and two, left and right power amplifier unit, and described interface unit comprises L end, R end and G end.Described earphone also comprises one and is connected to audio commutation circuit between the interface unit of earphone and left and right power amplifier unit, and described audio commutation circuit, as above described in each embodiment, just repeats no more at this.Just, in specific implementation process, four-axle linkage switch selects slide plate switch to be good, can directly its line traffic control be designed on earphone signal line.
In sum, the earphone provided by the utility model and audio commutation circuit thereof, by the switching of a four-axle linkage switch, control the break-make of the first audio unit and the second audio unit be arranged between interface unit and power amplifier unit, the output realizing earphone power amplifier unit switches between former sound and supper bass.Circuit is simple and reliable, cost low and be easy to realize.
It should be noted that in above-described embodiment, included unit is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection range of the present utility model.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, although carried out comparatively detailed description with reference to previous embodiment to the utility model, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments or carry out equivalent replacement to wherein portion of techniques feature.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (9)
1. the audio commutation circuit of an earphone, be connected between the interface unit of earphone and left and right power amplifier unit, described interface unit comprises L end, R end and G end, and it is characterized in that, described audio commutation circuit comprises a four-axle linkage switch, the first audio unit and the second audio unit;
Described four-axle linkage switch is made up of four single-pole double-throw switch (SPDT)s, the moving contact of four switches connects the input of described L end, R end and left and right power amplifier unit respectively, described first audio unit is connected between the fixed contact of the first switch and the fixed contact of the 3rd switch, and described second audio unit is connected between the fixed contact of second switch and the fixed contact of the 4th switch.
2. the audio commutation circuit of earphone as claimed in claim 1, it is characterized in that, described first audio unit comprises resistance R1, resistance R3 and the first band stop filter; Described resistance R1 is connected between the first fixed contact of the first switch and the first fixed contact of the 3rd switch, described resistance R3 is connected between the second fixed contact of the first switch and the second fixed contact of the 3rd switch, between the second fixed contact that described first band stop filter is connected to the 3rd switch and ground;
Described second audio unit comprises resistance R2, resistance R4 and the second band stop filter; Described resistance R2 is connected between the first fixed contact of second switch and the first fixed contact of the 4th switch, described resistance R4 is connected between the second fixed contact of second switch and the second fixed contact of the 4th switch, between the second fixed contact that described second band stop filter is connected to the 3rd switch and ground.
3. the audio commutation circuit of earphone as claimed in claim 2, it is characterized in that, described first band stop filter comprises inductance L 1 and electric capacity C1; Second fixed contact of the first termination the 3rd switch of described inductance L 1, the second end of described inductance L 1 is by electric capacity C1 ground connection;
Described second band stop filter comprises inductance L 2 and electric capacity C2; Second fixed contact of the first termination the 4th switch of described inductance L 2, the second end of described inductance L 2 is by electric capacity C1 ground connection.
4. the audio commutation circuit of earphone as claimed in claim 3, it is characterized in that, the resistance of described resistance is 8-15 Ω, described electric capacity between 22-100uF, described inductance between 18-25uH, and for Q value lower than 10 wire-wound inductor.
5. an earphone, comprise interface unit and two, left and right power amplifier unit, described interface unit comprises L end, R end and G end, it is characterized in that, described earphone also comprises one and is connected to audio commutation circuit between the interface unit of earphone and left and right power amplifier unit, and described audio commutation circuit comprises a four-axle linkage switch, the first audio unit and the second audio unit;
Described four-axle linkage switch is made up of four single-pole double-throw switch (SPDT)s, the moving contact of four switches connects the input of described L end, R end and left and right power amplifier unit respectively, described first audio unit is connected between the fixed contact of the first switch and the fixed contact of the 3rd switch, and described second audio unit is connected between the fixed contact of second switch and the fixed contact of the 4th switch.
6. earphone as claimed in claim 5, it is characterized in that, described first audio unit comprises resistance R1, resistance R3 and the first band stop filter; Described resistance R1 is connected between the first fixed contact of the first switch and the first fixed contact of the 3rd switch, described resistance R3 is connected between the second fixed contact of the first switch and the second fixed contact of the 3rd switch, between the second fixed contact that described first band stop filter is connected to the 3rd switch and ground;
Described second audio unit comprises resistance R2, resistance R4 and the second band stop filter; Described resistance R2 is connected between the first fixed contact of second switch and the first fixed contact of the 4th switch, described resistance R4 is connected between the second fixed contact of second switch and the second fixed contact of the 4th switch, between the second fixed contact that described second band stop filter is connected to the 3rd switch and ground.
7. earphone as claimed in claim 6, it is characterized in that, described first band stop filter comprises inductance L 1 and electric capacity C1; Second fixed contact of the first termination the 3rd switch of described inductance L 1, the second end of described inductance L 1 is by electric capacity C1 ground connection;
Described second band stop filter comprises inductance L 2 and electric capacity C2; Second fixed contact of the first termination the 4th switch of described inductance L 2, the second end of described inductance L 2 is by electric capacity C1 ground connection.
8. earphone as claimed in claim 7, it is characterized in that, the resistance of described resistance is 8-15 Ω, described electric capacity between 22-100uF, described inductance between 18-25uH, and for Q value lower than 10 wire-wound inductor.
9. earphone as claimed in claim 5, it is characterized in that, described four-axle linkage switch is slide plate switch, and the design of its line traffic control is on earphone signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520631181.8U CN205039957U (en) | 2015-08-20 | 2015-08-20 | Earphone and audio switching circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520631181.8U CN205039957U (en) | 2015-08-20 | 2015-08-20 | Earphone and audio switching circuit thereof |
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| CN205039957U true CN205039957U (en) | 2016-02-17 |
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| CN201520631181.8U Active CN205039957U (en) | 2015-08-20 | 2015-08-20 | Earphone and audio switching circuit thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959852A (en) * | 2016-06-15 | 2016-09-21 | 维沃移动通信有限公司 | Bluetooth headset |
| CN108597484A (en) * | 2018-03-19 | 2018-09-28 | 潍坊学院 | A kind of multi-mode singing system |
-
2015
- 2015-08-20 CN CN201520631181.8U patent/CN205039957U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959852A (en) * | 2016-06-15 | 2016-09-21 | 维沃移动通信有限公司 | Bluetooth headset |
| CN105959852B (en) * | 2016-06-15 | 2019-04-12 | 维沃移动通信有限公司 | A kind of bluetooth headset |
| CN108597484A (en) * | 2018-03-19 | 2018-09-28 | 潍坊学院 | A kind of multi-mode singing system |
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Address after: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee after: SHENZHE GUANXU ELECTRONIC CO., LTD. Address before: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee before: Shenzhen Grandsun Electronic Co., Ltd. |