CN203435119U - Acoustic image-prepositioned earphone - Google Patents
Acoustic image-prepositioned earphone Download PDFInfo
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- CN203435119U CN203435119U CN201320396474.3U CN201320396474U CN203435119U CN 203435119 U CN203435119 U CN 203435119U CN 201320396474 U CN201320396474 U CN 201320396474U CN 203435119 U CN203435119 U CN 203435119U
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- earphone
- loudspeaker
- channel loudspeaker
- loud speaker
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Abstract
The utility model relates to an acoustic image-prepositioned earphone. The earphone comprises an arc earphone housing adaptive to a head of a user. The earphone housing is correspondingly provided with an earphone sleeve at positions of two ears respectively. The internal of the earphone housing except the positions of the earphone sleeves forms a sealed cavity. A top end of the cavity, which is close to the head of the user and the position of a forehead, is provided with a main loudspeaker. The main loudspeaker comprises a left channel loudspeaker and a right channel loudspeaker which are symmetrically arranged at left and right sides close to the forehead and relative to the top end of the head. According to the acoustic image-prepositioned earphone, acoustic image of sound generated by the earphone is prepositioned and right ahead of a person, thereby improving the user experience.
Description
Technical field
The utility model relates to earphone technical field, relates in particular to the preposition earphone of a kind of acoustic image.
Background technology
When user sees a film or plays games, the picture of film or game and sound are all positioned at the place ahead of people, and the consistency of the position of picture and sound can be brought good experience to user.Traditional headphone is because earphone speaker is positioned at people's ear outer fix, acoustic image (also referred to as imaginary source) will be judged as the midpoint drawing a straight line at two ears by user, namely inner at head, the sound that people hears is positioned in the middle of brain or after two ears, if replace earphone to listen to two audio amplifiers, do not have this phenomenon.During traditional earphone sounding, why can make people be judged as above-mentioned acoustic image positions, be because the sound reproduction of earphone judges that with people the principle of acoustic image positions does not conform to.
Binaural effect theory thinks that people's ear produces according to following four physical factors the judgement of sound source: 1. sound arrives the time difference between ears, 2. sound arrives the intensity difference between ears, 3. the phase difference that sound low frequency component produced due to the time difference, the tone color that 4. number of people produces the bridging effect of high fdrequency component is poor.Wherein, factor 1 and factor 2 play a major role.
People's ear not only can be heard sound, but also the azimuth-range that strong and weak difference can utilize two ears to receive sound time and time difference are judged respectively sounding thing, the namely azimuth-range of sound source.Traditional earphone is because the distance of loud speaker to left ear and auris dextra equates, it is zero that voice signal arrives poor and time difference of the power of left ear and auris dextra, and acoustic image is positioned in the middle of brain, and people thinks that the sound of hearing is positioned in the middle of brain, user produces false sensation, and experience reduces.
Utility model content
The earphone that provides a kind of acoustic image preposition is provided main purpose of the present utility model, and the acoustic image that sound becomes of listening to while being intended to make user wear earphone is preposition.
In order to achieve the above object, the utility model proposes the preposition earphone of a kind of acoustic image, described earphone comprises the arc earphone outer covering suitable with wearer's head, described earphone outer covering correspondence has respectively an earphone covers in the position of two ears, the inside of described earphone outer covering forms the cavity of sealing except the position of earphone covers, in described cavity, near the top of wearer's head and the position of close forehead, be provided with main loudspeaker, described main loudspeaker comprises the symmetrically arranged left channel loudspeaker in the left and right sides and the right channel loudspeaker of relative apical head and close forehead.
Preferably, described left channel loudspeaker arranges in one's ear near a left side, and described right channel loudspeaker arranges near auris dextra limit.
Preferably, described earphone also comprises voicefrequency circuit, and described left channel loudspeaker and right channel loudspeaker are electrically connected to respectively outside voicefrequency circuit.
Preferably, described earphone also comprises the compensation loud speaker being arranged between described left channel loudspeaker and right channel loudspeaker, and described compensation loud speaker comprises the symmetrically arranged L channel compensation loud speaker in the left and right sides of relative apical head and close forehead and R channel compensation loud speaker.
Preferably, described L channel compensation loud speaker is near described right channel loudspeaker setting, and described R channel compensation loud speaker is near described left channel loudspeaker setting.
Preferably, described left channel loudspeaker and described L channel compensation loud speaker are parallel to respectively described voicefrequency circuit, and described right channel loudspeaker and described R channel compensation loud speaker are parallel to respectively described voicefrequency circuit.
Preferably, described earphone also comprises two delayers and two adjustable resistances, described L channel compensation loud speaker is connected with a delayer and an adjustable resistance afterwards and left channel loudspeaker is parallel to described voicefrequency circuit, and described R channel compensation loud speaker is connected with another delayer and another adjustable resistance afterwards and right channel loudspeaker is parallel to described voicefrequency circuit.
The preposition earphone of a kind of acoustic image the utility model proposes, the arc earphone outer covering of earphone is designed to its inner cavity that forms sealing except earphone covers, in cavity, near the top of wearer's head and the left and right sides of close forehead, be symmetrically arranged with left channel loudspeaker and right channel loudspeaker, the distance of left channel loudspeaker or right channel loudspeaker and two ears is different, the sound that people's ear is received has strong and weak difference and time difference etc., the acoustic image of the sound that earphone produces is preposition, be positioned at people's dead ahead, can improve user and experience.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preposition earphone of the utility model acoustic image the first embodiment;
Fig. 2 is the structural representation of the preposition earphone of the utility model acoustic image the second embodiment;
Fig. 3 is the circuit diagram of left channel loudspeaker and L channel compensation loud speaker in the preposition earphone of the utility model acoustic image one embodiment;
Fig. 4 is the schematic diagram that the voice signal that calculates left channel loudspeaker in the preposition earphone of the utility model acoustic image one embodiment arrives the time difference of two ears.
Embodiment
Refer to Fig. 1, Fig. 1 is the structural representation of the preposition earphone of the utility model acoustic image the first embodiment.Earphone 1 comprises the earphone outer covering 10 suitable with wearer's head, earphone 1 shell is arc, earphone outer covering 10 correspondences have respectively an earphone covers (not shown) in the position of two ears, the inside of earphone outer covering 10 forms cavity connection, sealing except the position of earphone covers, the top of close wearer's head in cavity, and the position near forehead is provided with main loudspeaker 101, main loudspeaker 101 comprises the symmetrically arranged left channel loudspeaker 1011 in the left and right sides and the right channel loudspeaker 1012 of relative apical head and close forehead.When wearer wears earphone 1 and sees a film or play games, picture and sound source are all positioned at people's dead ahead, people's ear is propagated and entered to the voice signal that left channel loudspeaker 1011 and right channel loudspeaker 1012 are sent in the cavity of sealing, it is unequal that sound propagates into respectively the distance of two ears, the sound that people's ear receives has strong and weak difference and time difference etc., and the position of acoustic image is positioned at the place ahead on the top of head, and the acoustic image of sound is preposition, make wearer hear that sound is from dead ahead, user produces the sense of reality.
Compared with prior art, earphone of the present utility model, when wearer wears this earphone 1, can change the sound that existing earphone produces and be positioned in the middle of brain or the phenomenon after two ears, makes the acoustic image of the sound that earphone 1 produces preposition, is positioned at people's dead ahead.
By foregoing description, can find out: the arc earphone outer covering 10 of the utility model earphone 1 is designed to the inner cavity that forms sealing except earphone covers, in cavity, near the top of wearer's head and the bilateral symmetry of close forehead, be provided with left channel loudspeaker 1011 and right channel loudspeaker 1012, the distance of left channel loudspeaker 1011 or right channel loudspeaker 1012 and two ears is different, the sound that people's ear is received has strong and weak difference and time difference etc., the acoustic image of the sound that earphone 1 produces is preposition, be positioned at people's dead ahead, can improve user and experience.
Refer to Fig. 2, Fig. 2 is the structural representation of the preposition earphone of the utility model acoustic image the second embodiment.Left channel loudspeaker 1011 arranges in one's ear near a left side, and right channel loudspeaker 1012 arranges near auris dextra limit.Wherein, left channel loudspeaker 1011 and right channel loudspeaker 1012 are electrically connected to respectively outside voicefrequency circuit.When wearer wears earphone 1, people's left ear and auris dextra propagated and entered respectively to the voice signal that left channel loudspeaker 1011 is sent in cavity, people's auris dextra and left ear propagated and entered respectively to the voice signal that right channel loudspeaker 1011 is sent in cavity, the voice signal sending due to left channel loudspeaker 1011 or right channel loudspeaker 1011 imports people's auris dextra into and the distance of left ear is different, during old friend's ear uppick sound, there is strong and weak difference and time difference, conform to binaural effect principle, the acoustic image of sound is preposition, when wearer hears sound, perceived sounds derives from the dead ahead on the top of head, user produces the sense of reality.
Because the left channel loudspeaker 1011 in cavity and right channel loudspeaker 1012 are near the both sides on wearer's head top and near forehead, head apart from people is very near, and head part has certain barrier effect to voice signal, medium-high frequency signal in the voice signal that left channel loudspeaker 1011 is sent is sent to auris dextra can produce very large decay, in like manner, the medium-high frequency signal in the voice signal that right channel loudspeaker 1012 is sent is sent to left ear also can produce very large decay.The diameter of supposing the number of people is 25cm, and sound wave propagation velocity in air is 344 meter per seconds, and the frequency of sound wave that corresponding wavelength is 25cm is f=ν/λ=(344m/s)/0.25m=1376Hz.The sound wave that wavelength is less than 25cm is that sound wave that frequency is greater than 1376 Hz is sent to auris dextra from left channel loudspeaker 1011 and can significantly decays, from right channel loudspeaker 1012, being sent to left ear also can significantly decay, and, barrier effect due to the number of people, the voice signal that left channel loudspeaker 1011 is sent cannot directly pass to auris dextra, and the voice signal that right channel loudspeaker 1012 is sent cannot directly pass to left ear, all can only receive reflect sound signal, therefore, can cause the fuzzy and drift of Sound image localization.
For this reason, between left channel loudspeaker 1011 and right channel loudspeaker 1012, be provided with compensation loud speaker 102, compensation loud speaker 102 comprises the symmetrically arranged L channel compensation loud speaker 1021 in the left and right sides of relative apical head and close forehead and R channel compensation loud speaker 1022.Wherein, L channel compensation loud speaker 1021 arranges near right channel loudspeaker 1012, with the sound that compensates left channel loudspeaker 1011 in the decay in auris dextra communication process; R channel compensation loud speaker 1022 arranges near left channel loudspeaker 1011, the decay with the sound that compensates right channel loudspeaker 1012 in ear communication process left.Wherein, L channel compensation loud speaker 1021 can be aimed at auris dextra setting, so that the through auris dextra of sound of L channel compensation loud speaker 1021; R channel compensation loud speaker 1022 can be aimed at left ear setting, so that the through left ear of sound of R channel compensation loud speaker 1022.
Refer to Fig. 3, Fig. 3 is the circuit diagram of left channel loudspeaker and L channel compensation loud speaker in the preposition earphone of the utility model acoustic image one embodiment, left channel loudspeaker 1011 is parallel to respectively in outside voicefrequency circuit 103 with L channel compensation loud speaker 1021, makes L channel compensation loud speaker 1021 obtain the voice signal identical with left channel loudspeaker 1011; In like manner, right channel loudspeaker 1012 is also parallel to respectively in outside voicefrequency circuit 103 with R channel compensation loud speaker 1022, makes R channel compensation loud speaker 1022 obtain the voice signal identical with right channel loudspeaker 1012.
Further, earphone 1 also comprises two delayers and two adjustable resistances, L channel compensation loud speaker 1021 is connected with a delayer 10211 and an adjustable resistance 10212 afterwards and left channel loudspeaker 1011 is parallel in voicefrequency circuit 103, in like manner, R channel compensation loud speaker 1022 is connected with another delayer and another adjustable resistance afterwards and right channel loudspeaker 1012 is parallel in voicefrequency circuit 103.
Wherein, delayer 10211 is Digital Signal Processing delayers, and the parameter of two delayers is identical, and the parameter of two adjustable resistances is identical.By regulating delayer, together with the voice signal that voice signal that left channel loudspeaker 1011 sends is sent with L channel compensation loud speaker 1021, import auris dextra into, import left ear into together with the voice signal that the voice signal that right channel loudspeaker 1012 is sent sends with R channel compensation loud speaker 1022; By regulating adjustable resistance, make the sound size variation of L channel compensation loud speaker 1021 and R channel compensation loud speaker 1022, user can regulate according to actual service condition.
Further, refer to Fig. 4, Fig. 4 is the schematic diagram that the voice signal that calculates left channel loudspeaker in the preposition earphone of the utility model acoustic image one embodiment arrives the time difference of two ears.Suppose that left channel loudspeaker 1011 is positioned at left ear dead ahead 50 centimeters, and the distance between left ear and auris dextra is 25 centimetres, can calculate left channel loudspeaker 1011 and be about 56cm apart from the distance of auris dextra, the time that left channel loudspeaker 1011 arrives auris dextras postpones than arriving left ear: (56cm-50cm)/(344m/s)=0.174ms.By 0.174 millisecond of the signal delay of delayer as shown in Figure 3 10211, just can produce the effect that voice signal that left channel loudspeaker 1011 sends apart from people's ear 50 centimeters left channel loudspeaker 1011 and L channel compensation loud speaker 1021 imports auris dextra into; In like manner, right channel loudspeaker 1012 also can arrange equally with the circuit of R channel compensation loud speaker 1022, repeats no more herein.
By foregoing description, can find out: the arc earphone outer covering 10 of earphone 1 of the present utility model is designed to its inner cavity that forms sealing except earphone covers, cavity is symmetrically arranged with left channel loudspeaker 1011 and right channel loudspeaker 1012 near the top of wearer's head and the left and right sides of close forehead, make the acoustic image of the sound that earphone 1 produces preposition, be positioned at people's dead ahead, simultaneously, between left channel loudspeaker 1011 and right channel loudspeaker 1012, be symmetrical arranged L channel compensation loud speaker 1021 and R channel compensation loud speaker 1022, to reduce, caused to the decay of signal stopping of voice signal because of head part, the sound that ear is received has strong and weak difference and time difference etc., make the position of acoustic image be positioned at the place ahead of people, when user wears this earphone and sees a film or play games, the position of acoustic image and picture is more consistent, all be positioned at the place ahead of user, user produces sensation on the spot in person, can improve experience.
The foregoing is only preferred embodiment of the present utility model, not thereby limit the utility model, any modification of doing within all spirit in utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. the earphone that acoustic image is preposition, described earphone comprises the arc earphone outer covering suitable with wearer's head, it is characterized in that, described earphone outer covering correspondence has respectively an earphone covers in the position of two ears, the inside of described earphone outer covering forms the cavity of sealing except the position of earphone covers, in described cavity, near the top of wearer's head and the position of close forehead, be provided with main loudspeaker, described main loudspeaker comprises the symmetrically arranged left channel loudspeaker in the left and right sides and the right channel loudspeaker of relative apical head and close forehead.
2. earphone according to claim 1, is characterized in that, described left channel loudspeaker arranges in one's ear near a left side, and described right channel loudspeaker arranges near auris dextra limit.
3. earphone according to claim 1, is characterized in that, described left channel loudspeaker and right channel loudspeaker are electrically connected to respectively outside voicefrequency circuit.
4. earphone according to claim 3, it is characterized in that, described earphone also comprises the compensation loud speaker being arranged between described left channel loudspeaker and right channel loudspeaker, and described compensation loud speaker comprises the symmetrically arranged L channel compensation loud speaker in the left and right sides of relative apical head and close forehead and R channel compensation loud speaker.
5. earphone according to claim 4, is characterized in that, described L channel compensation loud speaker is near described right channel loudspeaker setting, and described R channel compensation loud speaker is near described left channel loudspeaker setting.
6. earphone according to claim 5, it is characterized in that, described left channel loudspeaker and described L channel compensation loud speaker are parallel to respectively described voicefrequency circuit, and described right channel loudspeaker and described R channel compensation loud speaker are parallel to respectively described voicefrequency circuit.
7. earphone according to claim 6, it is characterized in that, described earphone also comprises two delayers and two adjustable resistances, described L channel compensation loud speaker is connected with a delayer and an adjustable resistance afterwards and left channel loudspeaker is parallel to described voicefrequency circuit, and described R channel compensation loud speaker is connected with another delayer and another adjustable resistance afterwards and right channel loudspeaker is parallel to described voicefrequency circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320396474.3U CN203435119U (en) | 2013-07-04 | 2013-07-04 | Acoustic image-prepositioned earphone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320396474.3U CN203435119U (en) | 2013-07-04 | 2013-07-04 | Acoustic image-prepositioned earphone |
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| CN203435119U true CN203435119U (en) | 2014-02-12 |
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| CN201320396474.3U Expired - Lifetime CN203435119U (en) | 2013-07-04 | 2013-07-04 | Acoustic image-prepositioned earphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883635A (en) * | 2014-02-28 | 2015-09-02 | 宁波升亚电子有限公司 | Near-head type loudspeaker device and application thereof |
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2013
- 2013-07-04 CN CN201320396474.3U patent/CN203435119U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883635A (en) * | 2014-02-28 | 2015-09-02 | 宁波升亚电子有限公司 | Near-head type loudspeaker device and application thereof |
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Granted publication date: 20140212 |
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| CX01 | Expiry of patent term |