CN213186472U

CN213186472U - Stereo earphone

Info

Publication number: CN213186472U
Application number: CN202021935765.1U
Authority: CN
Inventors: 郭克威; 冯子成
Original assignee: Cfg Barco Beijing Electronics Co ltd
Current assignee: Cfg Barco Beijing Electronics Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-05-11
Anticipated expiration: 2030-09-07

Abstract

A stereo earphone comprises a head band and earphone bodies connected to two ends of the head band, wherein each earphone body comprises a shell, the inner side of each shell is inwards recessed to form an earphone cavity, a main sound production unit with a sound production direction capable of facing an ear canal is embedded at the bottom of each earphone cavity, and an upper sound production unit, a lower sound production unit, a left sound production unit and a right sound production unit which are respectively positioned on the upper side, the lower side, the left side and the right side of the main sound production unit are embedded on the side wall of each earphone cavity; the sounding directions of the upper sounding unit, the lower sounding unit, the left sounding unit and the right sounding unit are all perpendicular to the sounding direction of the main sounding unit. The utility model provides a stereo earphone, the sound pressure level through 5 sound producing units in this both sides earphone body changes and cooperates the simulation jointly and goes out three-dimensional surround sound effect, this simple structure, and the lower and simulated surround sound effect of cost is better.

Description

Stereo earphone

Technical Field

The utility model relates to a package ear formula earphone, concretely relates to stereo earphone.

Background

A person can distinguish the direction of a sound source using the auditory system. At present, no matter the earphone is of an ear wrapping type, an in-ear type or a half-in-ear type, only one sound production unit is arranged in each earphone, and the left side and the right side of the earphone are provided with two sound production units. The stereo sound effect of the earphone is to complete the simulation of surround sound by adjusting the frequency response of the left and right sound generating units, but because the left and right sound generating units are actually directed to the ear canal, the effect of simulating surround sound can only obtain better experience on the sound effect from left to right or from right to left (for example, the sound effect of the airplane flying from left to right), and the sound effect of surround sound in other directions is poorer, especially the effect in the direction perpendicular to the left and right trunnions (for example, the front-back direction and the up-down direction) is poorer, and even the sound effect in such a mode cannot be simulated.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, namely to solve the problem of improving the surround sound effect of the earphone, the utility model provides a stereo earphone, which comprises a headband and earphone bodies connected to both ends of the headband, wherein the earphone bodies comprise a shell, the inner side of the shell is recessed inwards to form an earphone cavity, a main sound production unit with a sound production direction capable of facing the auditory canal is embedded at the bottom of the earphone cavity, and an upper sound production unit, a lower sound production unit, a left sound production unit and a right sound production unit which are respectively positioned at the upper side, the lower side, the left side and the right side of the main sound production unit are embedded on the side wall of the earphone cavity; the sounding directions of the upper sounding unit, the lower sounding unit, the left sounding unit and the right sounding unit are all perpendicular to the sounding direction of the main sounding unit.

In an embodiment, the stereo headphones further comprise an audio decoder and a channel converter; the audio decoder is electrically connected with the sound channel converter, and the sound channel converter is electrically connected with the main sound production unit, the upper sound production unit, the lower sound production unit, the left sound production unit and the right sound production unit respectively.

In one embodiment, the distance from the upper sound-emitting unit, the lower sound-emitting unit, the left sound-emitting unit and the right sound-emitting unit to the outer edge of the earphone cavity is between 0.5 cm and 1.5 cm.

In one embodiment, the outer edge of the earphone cavity is provided with an ear-wrapping sound insulation layer filled with sound insulation cotton.

In an embodiment, the main sound unit, the upper sound unit, the lower sound unit, the left sound unit and the right sound unit are all speakers.

The utility model has the advantages that:

the utility model provides a stereo earphone, the earphone body of both sides has all set up main sound producing unit and is located last sound producing unit on main sound producing unit upside, downside, left side, right side, sends sound producing unit, left sound producing unit and right sound producing unit. The stereo surround sound effect is simulated by the sound pressure level change of the 5 sound units in the earphone bodies on the two sides, the structure is simple, the cost is low, and the simulated surround sound effect is better.

Drawings

Fig. 1 is a schematic view of the main structure of the earphone body of the stereo earphone of the present invention.

Fig. 2 is a block diagram of the circuit connection structure of the present invention.

Detailed Description

The utility model provides a stereo earphone mainly includes the bandeau and connects in the earphone body at bandeau both ends. The earphone body is divided into a left earphone body 51 and a right earphone body 52, and the left earphone body 51 and the right earphone body 52 have the same structure.

Referring to fig. 1, fig. 1 illustrates the main structure of an earphone body. As shown in fig. 1, the earphone body includes a casing 1, an earphone cavity 2 is formed by inward depression of the inner side of the casing 1, a main sound generating unit 3 with a sound generating direction capable of facing the auditory canal is embedded in the bottom of the earphone cavity 2, and an upper sound generating unit 4, a lower sound generating unit 5, a left sound generating unit 6 and a right sound generating unit 7 which are respectively located on the upper side, the lower side, the left side and the right side of the main sound generating unit 3 are embedded in the side wall of the earphone cavity 2. The sounding directions of the upper sounding unit 4, the lower sounding unit 5, the left sounding unit 6 and the right sounding unit 7 are all perpendicular to the sounding direction of the main sounding unit 3. So, the user is when this stereo headphone of bandeau, and two ears about two earphone bodies correspond the user can utilize above-mentioned 5 sound producing units in two earphone bodies to cooperate jointly and simulate better stereo surround sound effect.

The outer edge of the earphone cavity 2 is provided with an ear-wrapping sound insulation layer filled with sound insulation cotton. The main sound unit 3, the upper sound unit 4, the lower sound unit 5, the left sound unit 6 and the right sound unit 7 are all loudspeakers.

The distance from the upper sound unit 4, the lower sound unit 5, the left sound unit 6 and the right sound unit 7 to the outer edge of the earphone cavity 2 is between 0.5 cm and 1.5 cm, preferably 1 cm. After the upper sound production unit 4, the lower sound production unit 5, the left sound production unit 6 and the right sound production unit 7 produce sound, the sound has a certain propagation path, and a user auditory system senses the direction and the size of the sound according to the propagation path, so that the surround sound effect is simulated to be closer to a real scene. The method is applied to the cinema, and the audience immersion is stronger by matching with the movie picture.

Referring to fig. 2, fig. 2 is a block diagram illustrating a circuit connection structure according to the present invention. As shown in fig. 2, the stereo headphone further includes an audio decoder 8 and a channel converter 9. The audio decoder 8 is electrically connected with the sound channel converter 9, and the sound channel converter 9 is electrically connected with the main sound generating unit 3, the upper sound generating unit 4, the lower sound generating unit 5, the left sound generating unit 6 and the right sound generating unit 7 respectively. The audio decoder 8 can decode the audio signal to be played, and transmit the decoded audio information to the sound channel converter 9, the sound channel converter 9 is electrically connected to each sound generating unit, and each sound generating unit corresponds to one sound channel. The sound channel converter 9 controls the corresponding sound production units to produce sound according to the received audio information, so that the sound production units cooperate with each other to simulate the stereo surround sound effect.

The following describes an application of the stereo headphone according to the present invention with reference to specific embodiments.

In this embodiment, the stereo headphone includes a left headphone body 51 and a right headphone body 52, which respectively correspond to the left ear and the right ear of the user. The main sound unit 3 in each earphone body faces the ear canal of the user as a main sound channel, which is responsible for bass and tonic. The four sounding units (4, 5, 6, 7) of the upper, lower, left and right are respectively corresponding to the upper sound channel, the lower sound channel, the left sound channel and the right sound channel. The sounding directions of the upper sounding unit, the lower sounding unit, the left sounding unit and the right sounding unit (4, 5, 6, 7) are perpendicular to the main sound channel. Referring to table 1, table 1 is a table of usage states of simulated surround sounds for respective sound units.

TABLE 1

Referring to table 2, table 2 is the SMPTE 2098 standard immersion audio channel and the matching mapping table of the present invention.

TABLE 2

The above description is the preferred embodiment of the present invention and the technical principle applied by the same, and for those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention all belong to the protection scope of the present invention.

Claims

1. A stereo earphone comprises a head band and earphone bodies connected to two ends of the head band, and is characterized in that the earphone bodies comprise a shell, the inner side of the shell is inwards recessed to form an earphone cavity, a main sound production unit with a sound production direction capable of facing the auditory canal is embedded in the bottom of the earphone cavity, and an upper sound production unit, a lower sound production unit, a left sound production unit and a right sound production unit which are respectively located on the upper side, the lower side, the left side and the right side of the main sound production unit are embedded in the side wall of the earphone cavity;

the sounding directions of the upper sounding unit, the lower sounding unit, the left sounding unit and the right sounding unit are all perpendicular to the sounding direction of the main sounding unit.

2. The stereo headphones of claim 1, further comprising an audio decoder and a channel converter; the audio decoder is electrically connected with the sound channel converter, and the sound channel converter is electrically connected with the main sound production unit, the upper sound production unit, the lower sound production unit, the left sound production unit and the right sound production unit respectively.

3. The stereo headphones of claim 1, wherein the upper, lower, left, and right sound-emitting units are between 0.5 cm and 1.5 cm from an outer edge of the headphone cavity.

4. Stereo headphones according to claim 1, characterized in that the outer edges of the headphone cavity are provided with an ear-wrapping sound-insulating layer filled with sound-insulating cotton.

5. Stereo headphones according to any of claims 1 to 4, wherein the main sound unit, the upper sound unit, the lower sound unit, the left sound unit and the right sound unit are all loudspeakers.