CN205142494U - Dual track frequency division output circuit and stereo headphone - Google Patents

Dual track frequency division output circuit and stereo headphone Download PDF

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Publication number
CN205142494U
CN205142494U CN201520609661.4U CN201520609661U CN205142494U CN 205142494 U CN205142494 U CN 205142494U CN 201520609661 U CN201520609661 U CN 201520609661U CN 205142494 U CN205142494 U CN 205142494U
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frequency
frequency unit
output
unit
frequency division
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CN201520609661.4U
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郭世文
余新
吴海全
师瑞文
彭久高
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Shenzhen Grandsun Electronics Co Ltd
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Shenzhen Grandsun Electronics Co Ltd
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Abstract

The utility model is suitable for an audio output field provides a dual track frequency division output circuit and stereo headphone, and this circuit includes: an audio output channel and the 2nd audio output channel, an audio output channel and the 2nd audio output channel all include first frequency division unit and second frequency division unit, and first frequency division unit is established ties or parallel connection with second frequency division unit, the audio signal of first frequency division unit and the different scopes of second frequency division unit output, first loudspeaker and second loudspeaker are connected respectively to the output of first frequency division unit, second frequency division unit. The utility model discloses amplify different frequency channel targeted's high -fidelity through different loudspeaker output, realization audio signal's high frequency and low frequency part respectively at each audio output channel, make the user can experience the seismaesthesia of high pitch and the sensation of movement of bass simultaneously, satisfy the higher requirement of user to music level feel.

Description

A kind of dual track frequency division output circuit and stereophone
Technical field
The utility model belongs to audio frequency and exports field, particularly relates to a kind of dual track frequency division output circuit and stereophone.
Background technology
The large earphone of current existing wear-type, left and right loudspeaker are all single horn designs respectively, see Fig. 1, wherein, audio frequency inputs from left audio output line LINE_L, right audio output line LINE_R respectively, by resistance R1, resistance R2, export from left horn LEFTSPEAKER, right horn RIGHTSPEAKER respectively.
But, the earphone of this single horn designs can only carry out emphasis reduction for an audiorange, or only for bass part high-fidelity, or only for HFS high-fidelity, or only for intermediate-frequency section high-fidelity, based on this, user is when listening to audio, the seismaesthesia of high pitch and the innervation of bass cannot be experienced simultaneously, the high requirement of user to music level texture cannot be met.
Utility model content
The object of the utility model embodiment is to provide a kind of dual track frequency division output circuit, and being intended to solve existing earphone cannot simultaneously to the problem that high-quality while of high pitch and bass exports.
The utility model embodiment is achieved in that a kind of dual track frequency division output circuit, and export with audio frequency and be connected, described circuit comprises:
First audio frequency output channel and the second audio frequency output channel;
Described first audio frequency output channel and described second audio frequency output channel include the first frequency unit and the second frequency unit, described first frequency unit and described second frequency unit connected in series or in parallel;
Described first frequency unit and described second frequency unit export the audio signal of different range, and the output of described first frequency unit, described second frequency unit connects the first loudspeaker and the second loudspeaker respectively.
Further, described first frequency unit exports gamut audio signal, described second frequency unit output low frequency signal;
Described first frequency unit and described second frequency unit are connected in series;
The input of described first frequency unit is the input of described circuit, and the output of described first frequency unit is connected with the input of described second frequency unit.
Further, described first frequency unit exports high-frequency signal, described second frequency unit output low frequency signal;
Described first frequency unit and described second frequency unit are connected in parallel;
The input of described first frequency unit and the input of described second frequency unit are the input of described circuit simultaneously.
Further, described circuit also comprises the three frequency division unit and the 3rd loudspeaker that export intermediate-freuqncy signal;
Described first frequency unit, described second frequency unit, described three frequency division unit are connected in parallel;
The input of described three frequency division unit is the input of described circuit, and the output of described three frequency division unit is connected with described 3rd loudspeaker.
Further, described first frequency unit comprises resistance R3, and the input of described resistance R3 is the input of described first frequency unit, and the output of described resistance R3 is the output of described first frequency unit.
Further, described second frequency unit comprises:
Inductance L 1, electric capacity C1 and resistance R4;
One end of described inductance L 1 is the input of described second frequency unit, the other end of described inductance L 1 is by described electric capacity C1 ground connection, the other end of described inductance L 1 is also connected with one end of described resistance R4, and the other end of described resistance R4 is the output of described second frequency unit.
Further, described first frequency unit (high frequency) comprising:
Electric capacity C2, resistance R5 and resistance R6;
One end of described electric capacity C2 is the input of described first frequency unit, the other end of described electric capacity C2 is by described resistance R5 ground connection, the other end of described electric capacity C2 is also connected with one end of described resistance R6, and the other end of described resistance R6 is the output of described first frequency unit.
Another object of the utility model embodiment is, a kind of stereophone is provided, comprise earphone and wear main body and earphone sounding cavity, and the dual track frequency division output circuit in above-described embodiment, described dual track frequency division output circuit is arranged in described earphone sounding cavity.
The utility model embodiment is exported by different loudspeaker the high and low frequency part of audio signal respectively at each audio frequency output channel, realize the high-fidelity pointed to different frequency range to amplify, enable user experience the seismaesthesia of high pitch and the innervation of bass simultaneously, meet the high requirement of user to music level texture.
Accompanying drawing explanation
The earphone export structure of single horn designs that Fig. 1 provides for prior art;
The structure of the dual track frequency division output circuit that Fig. 2 provides for the utility model first embodiment;
The structure of the dual track frequency division output circuit that Fig. 3 provides for the utility model second embodiment;
The structure of the dual track frequency division output circuit that Fig. 4 provides for the utility model the 3rd embodiment;
The exemplary circuit structure of the dual track frequency division output circuit that Fig. 5 provides for the utility model first embodiment;
The exemplary circuit structure of the dual track frequency division output circuit that Fig. 6 provides for the utility model second embodiment;
The frequency response curve figure of the dual track frequency division output circuit that Fig. 7 provides for the utility model embodiment;
The harmonic distortion curve chart of the dual track frequency division output circuit that Fig. 8 provides for the utility model embodiment.
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.In addition, if below in described each execution mode of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
The utility model embodiment is exported by different loudspeaker the high and low frequency part of audio signal respectively at each audio frequency output channel, realize the high-fidelity pointed to different frequency range to amplify, enable user experience the seismaesthesia of high pitch and the innervation of bass simultaneously, meet the high requirement of user to music level texture.
Below in conjunction with specific embodiment, realization of the present utility model is described in detail:
Fig. 2 shows the structure of the dual track frequency division output circuit that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model.
As the utility model one embodiment, this dual track frequency division output circuit can be applied in any earphone or audio frequency power amplifier output device, and this dual track frequency division output circuit, exports with audio frequency and be connected, comprising:
First audio frequency output channel LINE_L and the second audio frequency output channel LINE_R;
First audio frequency output channel LINE_L and the second audio frequency output channel LINE_R includes the first frequency unit 11 and the second frequency unit 12, first frequency unit 11 and the second frequency unit 12 and is connected in series;
First frequency unit 11 and the second frequency unit 12 export the audio signal of different range, and the output of the first frequency unit 11, second frequency unit 12 connects the first loudspeaker SP1 and the second loudspeaker SP2 respectively.
As the utility model one embodiment, the first frequency unit 11 can be made to export gamut audio signal, the second frequency unit 12 output low frequency signal;
Now, the input of the first frequency unit 11 is the input of circuit, and the output of the first frequency unit 11 is connected with the input of the second frequency unit 12.
In the utility model embodiment, be described for the first audio frequency output channel LINE_L, when the logical first audio frequency output channel LINE_L of audio signal exports, first full range signal is directly exported by the first loudspeaker SP1, these first loudspeaker SP1 realizes high-fidelity amplification output mainly for the audio frequency of high intermediate frequency, then full range signal carries out filtering through the second frequency unit 12 of low-pass filtering to the HFS exported again, output low frequency signal also realizes high-fidelity amplification output by the second loudspeaker SP2, the existing amplification to high intermediate frequency of audio frequency of such output, also the amplification to low frequency is had, thus make the audio signal level texture of output more how better, improve output quality.
Its frequency response curve is see Fig. 7, wherein two curves represent high fdrequency component in audio signal and low frequency component respectively, as can be seen from the figure the audio signal low-and high-frequency frequency division exported is well arranged, user is when listening to the music, the clear and melodious of high pitch can be experienced simultaneously, also can experience the thick and heavy of bass.
Its harmonic distortion curve is see Fig. 8, and wherein two curves are respectively the harmonic distortion of high fdrequency component and low frequency component, and its harmonic distortion is less, the noise be mixed in signal is less, the sound quality of acoustic playback is higher, and the audio signal namely exported is high-fidelity, low distortion music.
The utility model embodiment is exported by different loudspeaker the high and low frequency part of audio signal respectively at each audio frequency output channel, realize the high-fidelity pointed to different frequency range to amplify, enable user experience the seismaesthesia of high pitch and the innervation of bass simultaneously, meet the high requirement of user to music level texture.
Fig. 3 shows the structure of the dual track frequency division output circuit that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model.
As the utility model one embodiment, the first frequency unit 11 and the second frequency unit 12 can also adopt parallel connection structure, and the first frequency unit 11 exports high-frequency signal, the second frequency unit 12 output low frequency signal;
Now, the input of the first frequency unit 11 and the input of the second frequency unit 12 are the input of circuit simultaneously.
In the utility model embodiment, high-pass filtering and low-pass filtering can be carried out respectively to full range signal simultaneously, thus respectively high-fidelity amplification output be realized to high and low frequency, thus make the audio signal level texture of output better, improve output quality.
As the utility model one preferred embodiment, this dual track frequency division output circuit can also comprise three frequency division unit 13 and the 3rd loudspeaker SP3 of an output intermediate-freuqncy signal, see Fig. 4;
First frequency unit 11, second frequency unit 12, three frequency division unit 13 are connected in parallel;
The input of three frequency division unit 13 is the input of dual track frequency division output circuit, and the output of three frequency division unit 13 is connected with the 3rd loudspeaker SP3.
Preferably, composition graphs 2 and Fig. 5, the frequency unit 11 exporting gamut audio signal comprises resistance R3, and the input of resistance R3 is the input of the frequency unit 11 exporting gamut audio signal, and the output of resistance R3 is the output of the frequency unit 11 exporting gamut audio signal.
Output low frequency signal frequency split unit 12 comprises:
Inductance L 1, electric capacity C1 and resistance R4;
One end of inductance L 1 is the input of output low frequency signal frequency split unit, and the other end of inductance L 1 is by electric capacity C1 ground connection, and the other end of inductance L 1 is also connected with one end of resistance R4, and the other end of resistance R4 is the output of output low frequency signal frequency split unit.
Preferably, composition graphs 3 and Fig. 6, the frequency unit 11 exporting high-frequency signal comprises:
Electric capacity C2, resistance R5 and resistance R6;
One end of electric capacity C2 is the input of the frequency unit 11 exporting high-frequency signal, the other end of electric capacity C2 is by resistance R5 ground connection, the other end of electric capacity C2 is also connected with one end of resistance R6, and the other end of resistance R6 is the output of the frequency unit 11 exporting high-frequency signal.
The utility model embodiment is exported by different loudspeaker the high and low frequency part of audio signal respectively at each audio frequency output channel, realize the high-fidelity pointed to different frequency range to amplify, enable user experience the seismaesthesia of high pitch and the innervation of bass simultaneously, meet the high requirement of user to music level texture.
Another object of the utility model embodiment is, a kind of stereophone is provided, this stereophone comprises the dual track frequency division output circuit that the record of main body, earphone sounding cavity and above-described embodiment worn by earphone, dual track frequency division output circuit is arranged in earphone sounding cavity, and each earphone sounding cavity includes the first loudspeaker SP1 and the second loudspeaker SP2.
In the utility model embodiment, dual track frequency division output circuit is premised on earphone sounding cavity, the output of the first audio frequency output channel LINE_L is realized by left part earphone sounding cavity, the output of the second audio frequency output channel LINE_R is realized by right part earphone sounding cavity, audio signal is amplified respectively by the high-fidelity that the first loudspeaker SP1 of left and right earphone sounding cavity and the second loudspeaker SP2 realizes multiple frequency range and is exported, thus realize experiencing the seismaesthesia of high pitch and the innervation of bass, meet the high requirement of user to music level texture. simultaneously
The utility model embodiment is exported by different loudspeaker the high and low frequency part of audio signal respectively at each audio frequency output channel, realize the high-fidelity pointed to different frequency range to amplify, enable user experience the seismaesthesia of high pitch and the innervation of bass simultaneously, meet the high requirement of user to music level texture.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, 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 (8)

1. a dual track frequency division output circuit, export with audio frequency and be connected, it is characterized in that, described circuit comprises:
First audio frequency output channel and the second audio frequency output channel;
Described first audio frequency output channel and described second audio frequency output channel include the first frequency unit and the second frequency unit, described first frequency unit and described second frequency unit connected in series or in parallel;
Described first frequency unit and described second frequency unit export the audio signal of different range, and the output of described first frequency unit, described second frequency unit connects the first loudspeaker and the second loudspeaker respectively.
2. circuit as claimed in claim 1, is characterized in that, described first frequency unit exports gamut audio signal, described second frequency unit output low frequency signal;
Described first frequency unit and described second frequency unit are connected in series;
The input of described first frequency unit is the input of described circuit, and the output of described first frequency unit is connected with the input of described second frequency unit.
3. circuit as claimed in claim 1, is characterized in that, described first frequency unit exports high-frequency signal, described second frequency unit output low frequency signal;
Described first frequency unit and described second frequency unit are connected in parallel;
The input of described first frequency unit and the input of described second frequency unit are the input of described circuit simultaneously.
4. circuit as claimed in claim 3, is characterized in that, described circuit also comprises the three frequency division unit and the 3rd loudspeaker that export intermediate-freuqncy signal;
Described first frequency unit, described second frequency unit, described three frequency division unit are connected in parallel;
The input of described three frequency division unit is the input of described circuit, and the output of described three frequency division unit is connected with described 3rd loudspeaker.
5. circuit as claimed in claim 2, it is characterized in that, described first frequency unit comprises resistance R3, and the input of described resistance R3 is the input of described first frequency unit, and the output of described resistance R3 is the output of described first frequency unit.
6. circuit as claimed in claim 2 or claim 3, it is characterized in that, described second frequency unit comprises:
Inductance L 1, electric capacity C1 and resistance R4;
One end of described inductance L 1 is the input of described second frequency unit, the other end of described inductance L 1 is by described electric capacity C1 ground connection, the other end of described inductance L 1 is also connected with one end of described resistance R4, and the other end of described resistance R4 is the output of described second frequency unit.
7. circuit as claimed in claim 3, it is characterized in that, described first frequency unit comprises:
Electric capacity C2, resistance R5 and resistance R6;
One end of described electric capacity C2 is the input of described first frequency unit, the other end of described electric capacity C2 is by described resistance R5 ground connection, the other end of described electric capacity C2 is also connected with one end of described resistance R6, and the other end of described resistance R6 is the output of described first frequency unit.
8. a stereophone, comprise earphone and wear main body and earphone sounding cavity, it is characterized in that, described stereophone also comprises the dual track frequency division output circuit as described in any one of claim 1 to 7, and described dual track frequency division output circuit is arranged in described earphone sounding cavity.
CN201520609661.4U 2015-08-13 2015-08-13 Dual track frequency division output circuit and stereo headphone Active CN205142494U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105721639A (en) * 2016-04-15 2016-06-29 惠州Tcl移动通信有限公司 Stereo output device of mobile terminal and mobile terminal
CN105959438A (en) * 2016-07-06 2016-09-21 惠州Tcl移动通信有限公司 Processing method and system for audio multi-channel output loudspeaker and mobile phone
CN106060710A (en) * 2016-06-08 2016-10-26 维沃移动通信有限公司 Audio output method and electronic equipment
CN106231499A (en) * 2016-09-29 2016-12-14 宇龙计算机通信科技(深圳)有限公司 A kind of audio Enhancement Method and device
CN107509134A (en) * 2017-10-10 2017-12-22 李龙根 A kind of earphone second order passive frequency divider
CN108966690A (en) * 2017-03-22 2018-12-07 深圳市汇顶科技股份有限公司 audio system and earphone
CN109714662A (en) * 2017-10-26 2019-05-03 东莞市美耳电子有限公司 A kind of Divide-by-3 circuit earphone
CN111866667A (en) * 2019-04-29 2020-10-30 李锐洪 Portable pure stereo music player, stereo earphone and portable stereo music playing system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105721639A (en) * 2016-04-15 2016-06-29 惠州Tcl移动通信有限公司 Stereo output device of mobile terminal and mobile terminal
CN106060710A (en) * 2016-06-08 2016-10-26 维沃移动通信有限公司 Audio output method and electronic equipment
CN106060710B (en) * 2016-06-08 2019-01-04 维沃移动通信有限公司 A kind of audio-frequency inputting method and electronic equipment
CN105959438A (en) * 2016-07-06 2016-09-21 惠州Tcl移动通信有限公司 Processing method and system for audio multi-channel output loudspeaker and mobile phone
CN106231499A (en) * 2016-09-29 2016-12-14 宇龙计算机通信科技(深圳)有限公司 A kind of audio Enhancement Method and device
CN108966690A (en) * 2017-03-22 2018-12-07 深圳市汇顶科技股份有限公司 audio system and earphone
CN107509134A (en) * 2017-10-10 2017-12-22 李龙根 A kind of earphone second order passive frequency divider
CN109714662A (en) * 2017-10-26 2019-05-03 东莞市美耳电子有限公司 A kind of Divide-by-3 circuit earphone
CN111866667A (en) * 2019-04-29 2020-10-30 李锐洪 Portable pure stereo music player, stereo earphone and portable stereo music playing system
WO2020220802A1 (en) * 2019-04-29 2020-11-05 李锐洪 Portable pure stereo music player, stereo headphones, and portable stereo music playback system
CN111866667B (en) * 2019-04-29 2023-10-03 李锐洪 Portable pure stereo music player, stereo earphone and portable stereo music playing 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.