CN101137249B - earphone - Google Patents

Abstract

The invention provides an earphone, which comprises a shell, a shell extension part, a flat plate, a cover body, a first loudspeaker and a second loudspeaker. The first speaker is disposed on the support portion of the flat plate and located on a different surface from the second speaker, and forms a spatial distance with the listening direction of the earphone, so as to achieve a more layered effect and bring a better frequency response in some frequency bands, and eliminate interference of speakers generating different sound fields in the earphone with each other, thereby achieving a better sound field effect.

Description

earphone

technical field

The invention relates to an earphone, in particular to an earphone with multiple loudspeakers.

Background technique

With the advancement of digital technology, people's life and entertainment are gradually becoming digital. For example, a Digital Video Disc (Digital Video Disc, generally abbreviated as DVD) player is a common video player in ordinary households. And because the DVD player basically has the decoding function of Dolby Digital or Digital Theater System (DTS), it can decode the digital signal and output the analog signal to the speaker. And make it sound. If you want to have a high-quality digital audio-visual entertainment life, multi-channel (multi-channel) speakers are indispensable equipment, and 5.1-channel speakers are the basic multi-channel speakers.

However, when it is not suitable to use the speaker to play the sound (for example, it will hinder other people from doing things), it is necessary to use earphones to listen. In the past, the design aimed at integrating high-quality multi-channel (multi-channel) audio sources such as 2.1-channel or 5.1-channel into a small-sized headphone, because the volume inside the headphone is compared to a home theater Very small, if you want to achieve the quality and effect of multi-channel surround sound, you mainly use digital processing (such as circuit design) to control the delay of the output audio, and the output sound field is poor. Compared with the effect obtained by multi-channel speakers in a home theater, it is far from the quality and efficacy of multi-channel surround sound.

Contents of the invention

The purpose of the present invention is to provide an earphone to reduce the problem of mutual interference of sound fields generated by multiple speakers.

Another object of the present invention is to provide an earphone that reduces the problem of mutual interference of sound fields generated by multiple speakers.

To achieve the above or other purposes, the present invention provides an earphone, which includes a housing, an extension of the housing, a plate, a cover, a first speaker, and a second speaker. Wherein the housing extension part is an extension part of the above-mentioned housing. The flat plate is fixed on the extension part of the casing and forms a space with the casing to form a main sound field. The cover body is fixed on the extension part of the casing, and is located on the outer side of the flat plate relative to the above-mentioned space, so as to cover the casing. The first speaker is disposed on the support portion of the flat panel, and is located on a different surface from the second speaker so as to form a distance from the listening direction of the earphone.

In the above-mentioned earphone, the second speaker is also arranged on the above-mentioned plate, and the distance formed between the first speaker and the second speaker in the listening direction of the earphone is the height of the supporting part. The first speaker and the second speaker may be one of a 2.1-channel main speaker or a subwoofer.

In the above-mentioned earphone, in an optional embodiment, the second speaker is arranged in a composite sound chamber, and the above-mentioned composite sound chamber is composed of a composite sound chamber cavity, another third speaker and a fourth speaker, wherein the above-mentioned composite sound chamber The chamber body is fixed on the above-mentioned flat plate. In an embodiment, the first speaker is a 5.1-channel main speaker, and the second speaker is a 5.1-channel subwoofer. The third speaker and the fourth speaker are respectively 5.1-channel center or surround speakers.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a 2.1-channel earphone;

FIG. 2 is a schematic diagram of a 2.1-channel earphone according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of a 5.1-channel earphone according to an embodiment of the present invention.

Description of main component symbols

100: Headphones

110: Headphone body

120: Connect accessories

112: shell

114; housing extension

116: cover body

130: Main speaker

140: Subwoofer

200: Headphones

210: Headphone body

212: shell

214; housing extension

216: Cover

218: Tablet

218a: Support Ministry

220: Connect accessories

230: main speaker

240: Subwoofer

300: Headphones

310: Headphone body

312: shell

314; housing extension

316: Cover

318: Tablet

318a: Support Ministry

320: Connect accessories

330: main speaker

340: Composite Sound Room

342: Composite sound chamber cavity

344a, 344b, 344c: sub speakers

Detailed ways

The earphone proposed by the present invention is mainly one of the optimized designs carried out by the inventor of the present case for a series of multi-channel earphones. In the earphone proposed by the present invention, the characteristics include, for example, the technology of adjusting the designed cavity in the earphone or the volume in the cavity to improve the sound quality, which can be referred to the application filed by the inventor of the present invention on March 22, 2004 Taiwan Patent Application No. 93107621 titled "Earphone Structure with Composite Sound Field", and Taiwan Patent Application No. 93111985 filed on April 29, 2004 titled "Earphone Structure with Composite Sound Field" Application, Taiwan Patent Application No. 94103553, filed on February 4, 2005, titled "Multi-channel Earphone", and Taiwan Patent Application No. 95105609, filed on February 20, 2006, titled "Multi-channel Earphone" In the application case of another Taiwan patent application titled "Earphone with an external chamber sound guide tube", all the contents of the previous case are added to this case without repeating it. .

In the above-mentioned design technologies for multi-channel earphones, it is all to pursue a more perfect sound field in the earphones with limited space, that is, a sound field with a more sense of space and presence, so that the sound field in the earphones is closer to The effect obtained by multi-channel speakers in a home theater, such as a sound field such as multi-channel surround sound. And any improvement will tend towards this goal. In the earphones proposed by the present invention, the spatial configuration is mainly used to achieve a more layered sense and to bring better frequency responses in certain frequency bands, and to eliminate the interference between speakers that produce different sound fields in the earphones. To achieve a better sound field effect.

In order to achieve a more layered spatial configuration and avoid interference, in the earphone 200 of the present invention, one of the main speaker 230 and the subwoofer 240 is mainly arranged in the extension part 214 of the housing to extend the sound. In the chamber 213, when the main speaker 230 and the subwoofer 240 emit sound at the same time, the generated sound field will have a more mellow, richer and layered sound field due to some distance differences.

For example, take the 2.1-channel sound source as an example, which is mainly provided to the main speaker and the subwoofer, so the design of the earphone must be equipped with these two speakers. For the 2.1-channel earphone, please refer to the earphone structure 100 in FIG. 1. Only one side of the earphone is shown in FIG. It is the same as shown in FIG. 1 , and will not be repeated here.

The 2.1-channel earphone 100 is composed of an earphone body 110 and a connecting accessory 120 . The earphone main body 110 is mainly composed of a housing 112 , a housing extension 114 and a cover 116 . The housing extension 114 is an extension of the housing 112 and is connected to the cover 116 . There is a flat plate 118 inside the earphone body 110 for fixing the main speaker 130 and the subwoofer 140 . The main speaker 130 and the subwoofer 140 are disposed in the earphone body 110 , and a 2.1-channel audio source is provided by the connection accessory 120 . When the earphone 100 is connected to a 2.1-channel audio source, the audio of different channels can be output to the main speaker 130 and the subwoofer 140 respectively, so that the user can listen to better sound quality and stereo effects than stereo audio.

It can be seen from the earphone 100 that the main speaker 130 and the subwoofer 140 are disposed on the flat panel 118 inside the earphone body 110 and arranged side by side on the same plane so as to emit sound toward the direction A that the user listens to. When the main speaker 130 and the subwoofer 140 emit sound at the same time, since these two speakers are located on the same plane, there is no difference in the depth of the sound field in the same direction, so the main sound chamber 111 in the earphone main body 110 , and in the extension sound chamber 113 in the housing extension 114, there will be interference in the sound field, which will cause the sound field emitted by the earphone 100 to be unsatisfactory, and may even cause poor sound field effects due to interference, especially in the low frequency range.

In order to make the multi-channel sound source produce a more rounded, rich and layered sound field in the earphone, the present invention proposes a structure of the earphone, which mainly uses the spatial configuration to achieve a more layered and avoid interference effect.

For example, for a 2.1-channel earphone, please refer to FIG. 2 which is a schematic diagram of a 2.1-channel earphone according to a preferred embodiment of the present invention. It should be noted that although Fig. 2 only depicts one side of the earphone of the present invention, those skilled in the art should know that the structure of the other side which is not depicted is the same as that shown in Fig. 2, and will not be repeated here. repeat.

Please refer to FIG. 2 , the 2.1-channel earphone 200 includes an earphone body 210 and a connecting accessory 220 . The earphone main body 210 is mainly composed of a housing 212 , a housing extension 214 and a cover 216 . The housing extension 214 is an extension of the housing 212 and is connected to the cover 216 . There is a flat plate 218 inside the earphone body 210 for fixing the main speaker 230 and the subwoofer 240 . The main speaker 230 and the subwoofer 240 are disposed in the earphone body 210 , and a 2.1-channel audio source is provided by the connection accessory 220 . When the earphone 200 is connected to a 2.1-channel audio source, the audio of different channels can be output to the main speaker 230 and the subwoofer 240 respectively, so that the user can listen to better sound quality and stereo effect than stereo. In addition, the positions of the main speaker 230 and the subwoofer 240 are interchangeable, that is, in another embodiment, the configuration positions of the two are interchangeable, which still belongs to the scope of the present invention.

In order to achieve a more layered effect in spatial configuration and avoid mutual interference, in the earphone 200 of the present invention, one of the main speaker 230 and the subwoofer 240 is mainly arranged in the extension of the casing extension 214. In the sound chamber 213, there is a difference in the spatial distance between each other. When the main speaker 230 and the subwoofer 240 emit sound at the same time, the generated sound field will have a more mellow, richer and layered sound field due to some differences in space and distance.

In the earphone 200 of this embodiment, although the main speaker 230 and the subwoofer 240 are still fixed on the flat panel 218, a support portion 218a is further included on the flat panel 218, which is higher than the plane of the flat panel 218, and the main speaker 230 is fixed. On this support part 218a. That is, the main speaker 230 and the subwoofer 240 are arranged on different planes. As shown in FIG. difference in Compared with the listening direction B of the user, the main speaker 230 is closer to the listener than the subwoofer 240 . Therefore, when the main speaker 230 and the subwoofer 240 emit sound at the same time, the generated sound field is less likely to interfere with each other due to some distance differences, and the sound field generated at the same time is overall more rounded and rich and has a sense of hierarchy. . In further practical experiments, it is found that the earphone 200 of this embodiment has a more prominent effect in the low frequency range and has a very good frequency response.

It is reiterated here that the positions of the main speaker 230 and the subwoofer 240 can be interchanged, which can be designed and adjusted according to needs. For example, the earphone is an earphone with the main channel as the main channel, or an earphone that emphasizes the subwoofer effect. That is, in another embodiment, the configuration positions of the two can be interchanged. That is, the subwoofer 240 may also be arranged in the extension sound chamber 213 in the housing extension 214 , so that the main speaker 230 and the subwoofer 240 have a difference in spatial distance. Compared to the listening direction B of the user, the subwoofer 240 is closer to the listener than the main speaker 230 .

In order to make the multi-channel sound source produce a more rounded, rich and layered sound field in the earphone, the headphone structure proposed by the present invention mainly uses the spatial configuration to achieve a more layered and avoid interference effect. It is suitable for multi-channel earphones such as 5.1-channel or 7.1-channel, etc., especially applicable to the design of multi-channel earphones mentioned in a series of previous cases belonging to the same series as the present invention, and only one of them is implemented here. For example, in all 5.1-channel or 7.1-channel and other multi-channel earphones, especially in the multi-channel earphone designs mentioned in all previous cases of this series, the innovation of the present invention can be used to further use Multichannel headphones produce better results.

In the illustrated embodiment presented here, please refer to FIG. 3 , which is a schematic diagram of a 5.1-channel earphone according to an embodiment of the present invention. Similarly, although FIG. 3 only shows one side of the earphone of the present invention, those skilled in the art should know that the structure of the other side that is not shown is the same as that shown in FIG. 3 , and will not be repeated here.

Please refer to FIG. 3 , the 5.1-channel earphone 300 includes an earphone body 310 and a connecting accessory 320 . The earphone main body 310 is mainly composed of a housing 312 , a housing extension 314 and a cover 316 . The housing extension 314 is an extension of the housing 312 and is connected to the cover 316 . There is a flat plate 318 inside the earphone body 310 for fixing the main speaker 330 and a composite sound chamber 340 . The composite sound chamber 340 is composed of a composite sound chamber cavity 342 and a plurality of sub-speakers 344a, 344b and 344c.

The compound sound chamber cavity 342 is fixed on the plate 318, and the outlet of the compound sound chamber 340 faces the direction of the listener. The sub-speakers 344 a , 344 b and 344 c are fixed in the compound sound chamber cavity 342 . These sub-speakers may be, for example, a subwoofer 344a, a first speaker 344b, a second speaker 344c and so on. As shown in Figure 3, the subwoofer 344a is arranged at the rear end of the compound sound chamber cavity 342, and the first speaker 344b and the second speaker 344c are respectively arranged at the opposite sides of the compound sound chamber cavity 342, which can be One of the center or surround speakers for 5.1-channel headphones. However, this embodiment and FIG. 3 are used to describe the present invention for illustration, but not to limit the present invention.

The configuration of the main speaker 330 and the compound sound chamber 340, such as the size of the space in the compound sound chamber cavity 342, the positional configuration of the sub-speakers 344a-344c, etc., can refer to all the previous claims of the same series as the present invention. And the design of multi-channel earphones, for example, in Taiwan Patent Application No. 93107621 "Earphone Structure with Composite Sound Field", it is proposed to adjust the cavity designed in the earphone or the volume in the cavity to improve the sound quality technology , or referring to the arrangement of all earphone positions mentioned in other previous cases can produce different effects, such as "Earphone Structure with Composite Sound Field" in Taiwan Patent Application No. 93107621, "Earphone Structure with Composite Earphone structure of the sound field", patent application No. 94103553 "multi-channel earphone", or patent application No. 95105609 "multi-channel earphone".

In the earphone 300 of this embodiment, the compound sound chamber 340 is fixed on the flat plate 318 , and the main speaker 330 is fixed on the support portion 318 a on the flat plate 318 , which is higher than the plane of the flat plate 318 . That is, the main speaker 330 and the composite sound chamber 340 are arranged on different planes, as shown in FIG. difference in Compared to the direction C in which the user listens, the main speaker 330 is closer to the listener than the composite sound chamber 340 . Therefore, when the main speaker 330 and the composite sound chamber 340 emit sound at the same time, the generated sound field is less likely to interfere with each other due to some distance differences, and the sound field generated at the same time is overall more rounded and rich and has a sense of hierarchy. .

Although the present invention has been disclosed in conjunction with the above preferred embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the art can make some modifications and changes without departing from the spirit and scope of the present invention. modification, so the protection scope of the present invention should be defined by the claims.

Claims (8)

1. An earphone, comprising: a shell; a housing extension, which is an extension of the housing; A flat plate is fixed to the extension part of the housing and forms a space with the housing to form a main sound field; a cover body, fixed to the extension part of the above-mentioned casing, and located on the outer side of the above-mentioned flat plate relative to the above-mentioned space, for covering the above-mentioned casing; and a first loudspeaker and a second loudspeaker, wherein the first loudspeaker is disposed on a support portion on the flat panel, and is located on a different surface from the second loudspeaker so as to form a distance from the listening direction of the earphone, Wherein the second speaker is also arranged on the flat panel, and the distance formed between the first speaker and the second speaker in the earphone listening direction is the height of the supporting part. 2. The earphone according to claim 1, wherein the first speaker is a 2.1-channel main speaker. 3. The earphone according to claim 2, wherein the second speaker is a 2.1-channel subwoofer. 4. The earphone according to claim 1, wherein the first speaker is a 2.1-channel subwoofer. 5. The earphone according to claim 2, wherein the second speaker is a 2.1-channel main speaker. 6. The earphone as claimed in claim 1, wherein said second speaker is disposed in a compound sound chamber, and said compound sound chamber is composed of a compound sound chamber cavity and another third speaker and a fourth speaker , wherein the composite sound chamber cavity is fixed on the above-mentioned flat plate. 7. The earphone according to claim 6, wherein the first speaker is a 5.1-channel main speaker, and the second speaker is a 5.1-channel subwoofer. 8. The earphone according to claim 7, wherein the third speaker and the fourth speaker are 5.1 channel center speakers and surround speakers respectively.

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