Pickup and playback earphone structure capable of suppressing squeal

Abstract

The utility model discloses a sound pickup and playback earphone structure capable of suppressing howling, which comprises a loudspeaker unit positioned at the head of an earphone, a sound pickup unit positioned at the tail of the earphone and a shaping connecting unit for connecting the loudspeaker unit and the sound pickup unit, and is characterized in that one end of the loudspeaker unit far away from the shaping connecting unit is provided with a sound production air guide port; the sound production air guide port is provided with a sound production air guide port, the sound pick-up unit is provided with a sound pick-up port, the shaping connection unit is of a U-shaped structure, and the bending shape of the shaping connection unit is matched with the auricle of a human body, so that when the earphone structure is worn on the ear of the human body, the sound production air guide port faces the ear hole of a wearer, and the sound pick-up unit is located behind the auricle of the wearer. The pickup and playback earphone structure provided by the utility model can effectively restrain generation of howling through physical layout, has comfortable wearing experience, is simple in structure, convenient to manufacture and low in cost, and has a good application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone design, in particular to a sound pickup and playback earphone structure capable of suppressing howling. Background Art

[0002] The most common problem with audio playback systems is howling. Headphone howling, also known as acoustic feedback, occurs when sound from the speaker is captured and amplified again by the microphone. This positive feedback loop causes specific frequencies to be continuously amplified, ultimately creating a piercing howling sound. Howling can cause hearing damage. While reducing the volume or compressing the frequency band can reduce the likelihood of howling, it also results in decreased loudness or resolution. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a pickup and playback earphone structure that suppresses howling, which adopts a structure in which the sound speaker and the pickup are separated to suppress the generation of howling.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] On the one hand, the present invention provides a sound pickup and playback earphone structure with howling suppression, comprising a speaker unit located at the head of the earphone, a pickup unit located at the tail of the earphone, and a shaping connection unit connecting the speaker unit and the pickup unit, wherein an air-conducting port is provided on the speaker unit at one end away from the shaping connection unit, and a pickup port is provided on the pickup unit. The shaping connection unit is a U-shaped structure, and its bending shape is adapted to the human auricle, so that when the earphone structure is worn on the human ear, the air-conducting port faces the wearer's ear hole, and the pickup unit is located behind the wearer's auricle.

[0006] In a preferred embodiment, the pickup port and the sound-generating air guide port are oriented in opposite directions.

[0007] In a preferred embodiment, the pickup unit is configured to have a cardioid orientation.

[0008] In a preferred embodiment, the cardioid direction of the pickup unit is 180 degrees out of phase with the sound field of the speaker unit, so that the air leakage from the speaker unit vibrates perpendicular to the pickup port.

[0009] In a preferred embodiment, the material of the shaping connection unit is shaping silicone.

[0010] On the other hand, the present invention provides an earphone, which comprises a left earphone and a right earphone with symmetrical structures, wherein both the left earphone and the right earphone have the above-mentioned sound pickup and playback earphone structure for suppressing howling.

[0011] In a preferred embodiment, the earphones include wired earphones or wireless earphones.

[0012] In a preferred embodiment, the external connecting wire of the wired headset is connected to the pickup unit.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention adopts a structure in which the sound-generating speaker and the pickup are separated. The physical layout can effectively suppress the generation of howling. At the same time, it combines ergonomics, such as utilizing the auricle to block, dual-channel sound pickup for the left and right ears, etc., and utilizing the characteristics of the molded silicone to adapt to the individual auricle of the human body. It has multiple functions such as comfortable wearing, stereo sound pickup, accurate positioning, and self-sound suppression.

[0015] (2) The present invention can achieve the purpose of suppressing howling by adopting only a simple earphone structure design, without the need for complex technical processing inside the earphone or the use of expensive earphone components. It has the advantages of simple manufacturing, cost saving, and achieving twice the result with half the effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a sound pickup and playback earphone with howling suppression according to an embodiment of the present invention, wherein A is a schematic diagram of the structure of the earphone for the right ear, and B is a schematic diagram of the structure of the earphone for the left ear;

[0017] Figure 2 Schematic diagram of a left-ear wearing configuration of a pickup and playback earphone structure with howling suppression according to an embodiment of the present invention.

[0018] In the figure: 1. Speaker unit; 101. Sound-generating air guide port; 2. Sound pickup unit; 201. Sound pickup port; 3. Shaping connection unit; 4. Auricle. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal communication of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1 This embodiment provides a sound pickup and playback earphone structure for suppressing howling, wherein the right earphone structure is as follows Figure 1 As shown in A, the left earphone structure is as follows Figure 1 As shown in Figure B, the left and right earphone structures are symmetrically designed, each including a speaker unit 1 located at the head of the earphone, a sound pickup unit 2 located at the tail of the earphone, and a shaping connection unit 3 that physically connects the speaker unit 1 and the sound pickup unit 2. The speaker unit 1 is provided with a sound-generating air guide port 101 at one end away from the shaping connection unit 3, and the sound pickup unit 2 is provided with a sound pickup port 201. The shaping connection unit 3 is a U-shaped structure, and its bending shape is adapted to the human auricle 4, so that when the earphone structure is worn on the human ear, the sound-generating air guide port 101 faces the wearer's ear hole, and the sound pickup unit 2 is located behind the wearer's auricle 4. It should be noted that the above-mentioned earphone structure is applicable to both wired and wireless earphones, wherein the external connection line of the wired earphone is connected to the sound pickup unit 2.

[0023] For details, see Figure 2 Taking the left ear as an example, when the howling-suppressing pickup and playback earphone structure of this embodiment is worn, the shaping connection unit 3 is located above the wearer's auricle 4. Due to its elasticity and strong plasticity, it can adapt to the individual auricle 4, providing wearing shaping support that conforms to the different shapes of the auricle 4. At the same time, its softness and skin-friendly design provide a comfortable wearing experience, almost imperceptible even for long periods of wear. As a preference, the shaping connection unit is made of shaping silicone.

[0024] Combine Figure 1A and 1B, the speaker unit 1 is provided with an air duct 101 at the end away from the shaped connection unit 3. When worn, this duct 101 faces the wearer's ear. The speaker unit 1 constitutes the sound-producing component of the earphones, converting the electrical signals from the audio amplifier circuit into air vibrations, which are then transmitted to the ear canal through the air duct 101. The human auditory system receives these air vibrations, converting them into neurally usable information, which is then analyzed by the brain, allowing the body to hear the sound.

[0025] Furthermore, the pickup unit 2 is provided with a pickup port 201 for picking up environmental information, including the sound information emitted by the speaker unit 1, which is the main cause of the howling. In this embodiment, the pickup unit 2 is set to a cardioid direction, which can minimize the sound information picked up by the speaker unit 1. It should be understood that in Figure 1 In the right-ear earphone configuration shown in Figure A, the sound pickup port 201 is located on the back of the sound pickup unit 2 and is therefore not labeled. When worn, the sound pickup unit 2 and its sound pickup port 201 are both located behind the wearer's auricle 4. The sound pickup port 201 is oriented oppositely to the sound-generating air guide port 101 on the speaker unit 1, resulting in the sound pickup unit 2's cardioid pattern being 180 degrees out of phase with the speaker unit 1's sound field. This results in the air leakage from the speaker unit 1 vibrating perpendicularly to the sound pickup port 201.

[0026] It should be noted that the earphone structure of this embodiment can effectively suppress howling, and its working principle is as follows:

[0027] (1) This embodiment uses a plastic connection unit 3 to physically connect the speaker unit 1 and the pickup unit 2. Since the plastic silicone used in the plastic connection unit 3 has good flexibility and plasticity, the physical attenuation of the sound vibration of the speaker unit 1 due to the plastic silicone is transmitted to the pickup unit 2, and the effect can be ignored.

[0028] (2) The auricle 4 blocks and separates the attached speaker unit 1 and the pickup unit 2, further blocking the direct sound waves of the speaker unit 1. The pickup port 201 on the pickup unit 2 picks up the residual diffraction sound waves, whose intensity and phase are greatly attenuated, effectively reducing the howling caused by positive feedback.

[0029] (3) The pickup unit 2 is set to a cardioid orientation. This acoustic directivity pattern is used to primarily pick up the sound directly in front of the pickup port 201 while minimizing the pickup of sound in other directions. Since the pickup port 201 and the sound-generating air guide port 101 are oriented in opposite directions in this embodiment, the cardioid orientation of the pickup unit 2 is 180 degrees out of phase with the sound field of the speaker unit 1. The air vibration leaked from the speaker unit 1 is perpendicular to the pickup port 201, thereby minimizing the pickup of sound information emitted by the speaker unit 1 and further attenuating the positive feedback of the sound emitted by the speaker unit 1.

[0030] (4) Since the microphone port 201 is located behind the auricle 4, the obstruction of the auricle 4 effectively attenuates the wearer's own voice, which helps to reduce the intensity of the wearer's own voice and makes the listening experience more natural.

[0031] (5) The earphone structure for the left and right ears of this embodiment is symmetrically designed. The left and right pickup units 2 provide a dual-channel sound pickup function, and their time difference and phase difference provide sound field positioning and stereo effect information. Specifically, when the sound comes from different directions, the time it reaches the left and right pickup units 2 will be different. For example, if the sound comes from the left, it will first reach the left pickup unit 2 and later reach the right pickup unit 2. This time difference is an important clue for the human ear to judge the direction of the sound source. In addition to the time difference, the phase of the sound when it reaches the two pickup units 2 will also be different. Phase refers to the vibration state of the sound wave at a specific moment. When the phase of the sound wave differs between the left and right channels, it can help the human ear perceive the relative position of the sound source. Ultimately, the human ear and brain use the time difference and phase difference to locate the sound source and obtain a stereo effect.

Claims

1. A pickup and playback earphone structure for suppressing howling, characterized in that: The invention comprises a speaker unit (1) located at the head of the earphone, a sound pickup unit (2) located at the tail of the earphone, and a shaping connection unit (3) connecting the speaker unit (1) and the sound pickup unit (2); a sound-generating air guide port (101) is provided on one end of the speaker unit (1) away from the shaping connection unit (3); a sound pickup port (201) is provided on the sound pickup unit (2); the shaping connection unit (3) is a U-shaped structure, and its bending shape is adapted to the human auricle (4), so that when the earphone structure is worn on the human ear, the sound-generating air guide port (101) faces the wearer's ear hole, and the sound pickup unit (2) is located behind the wearer's auricle (4).

2. The pickup and playback earphone structure for suppressing howling according to claim 1, characterized in that: The pickup port (201) and the sound-generating air guide port (101) are oriented in opposite directions.

3. The pickup and playback earphone structure for suppressing howling according to claim 2, characterized in that: The pickup unit (2) is arranged to be cardioid directional.

4. The earphone structure for picking up and playing back sound with suppression of howling according to claim 3, characterized in that: The cardioid direction of the pickup unit (2) is 180 degrees in anti-phase with the sound field of the speaker unit (1), so that the air leaked from the speaker unit (1) vibrates perpendicularly to the pickup port (201).

5. The earphone structure for picking up and playing back sound with suppression of howling according to claim 1, characterized in that: The material of the shaping connection unit (3) is shaping silicone.

6. An earphone comprising a left earphone and a right earphone with a symmetrical structure, characterized in that: The left earphone and the right earphone both have the sound pickup and playback earphone structure for suppressing howling as described in any one of claims 1 to 5.

7. The earphone according to claim 6, characterized in that The earphones include wired earphones or wireless earphones.

8. The earphone according to claim 7, wherein: The external connection line of the wired earphone is connected to the pickup unit (2).

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