CN217469939U

CN217469939U - Noise-reducing ear-hanging type public network interphone

Info

Publication number: CN217469939U
Application number: CN202221606862.5U
Authority: CN
Inventors: 王圣婉
Original assignee: Fujian Langjie Electronics Co ltd
Current assignee: Fujian Langjie Electronics Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-20
Anticipated expiration: 2032-06-20

Abstract

The utility model provides an ear-hanging public network intercom of making an uproar falls relates to intercom technical field, include: the interphone body is internally provided with a public network communication module; the noise reduction circuit is positioned in the interphone body and is connected with the public network communication module; the noise database is positioned in the interphone body and used for storing noise data; and the processing circuit is positioned in the interphone body and is connected with the noise database. The utility model is connected with the public network communication module through the noise reduction circuit, and can be applied to public network interphones; the processing circuit and the noise reduction circuit counteract the noise to realize accurate noise reduction.

Description

Noise-reducing ear-hanging type public network interphone

Technical Field

The utility model belongs to the technical field of the intercom technique and specifically relates to an ear-hang public network intercom of making an uproar falls is related to.

Background

The interphone is very inconvenient to use in a noisy external environment, and noise reduction needs to be carried out on the interphone. The conventional noise reduction interphone generally includes physical noise reduction (by the structural design of the microphone and the receiver) and noise reduction circuit noise reduction (by generating a sound wave with the same amplitude and opposite phase to the noise to cancel the noise), in the latter case, the noise reduction circuit often treats the speaker voice as the noise cancellation processing, and thus the other party cannot hear the voice information clearly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction ear-hanging type public network interphone, which can more accurately perform noise reduction treatment on noise;

the utility model provides an ear-hanging public network intercom of making an uproar falls, include: the interphone body is internally provided with a public network communication module; the noise reduction circuit is positioned in the interphone body and is connected with the public network communication module; the noise database is positioned in the interphone body and used for storing noise data; and the processing circuit is positioned in the interphone body and is connected with the noise database.

Furthermore, the system also comprises a receiver connected with the public network communication module.

Further, a microphone is connected with the processing circuit.

Further, the noise reduction circuit is connected with a noise database.

Further, the noise reduction circuit is a DSP noise reduction circuit.

Further, the processing circuit is a DSP processing circuit.

Furthermore, a power supply system is also arranged in the interphone body.

Furthermore, a PCB is arranged in the interphone body, and the public network communication module, the noise reduction circuit, the noise database and the processing circuit are integrated on the PCB and are powered by the power supply system.

Furthermore, a noise reduction structure is arranged on the microphone.

Further, still include the antenna, the antenna is FPC flexible row antenna or spring antenna, the antenna with public network communication module is connected.

The technical proposal of the utility model can be applied to the public network interphone through the public network communication module; the processing circuit firstly carries out a small noise reduction processing on the sound input into the interphone, and the conversation voice cannot be damaged due to low processing degree; then the noise database identifies the environment noise after the primary processing, and then offsets the noise through the noise reduction circuit, thereby realizing more accurate secondary noise reduction.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

description of reference numerals:

1-public network communication module, 2-noise reduction circuit, 3-noise database, 4-processing circuit, 5-receiver, 6-microphone, 7-power system, 8-antenna;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the utility model provides an ear-hanging public network intercom of making an uproar falls, include: the interphone body is internally provided with a public network communication module 1; the noise reduction circuit 2 is positioned in the interphone body and is connected with the public network communication module 1; the noise database 3 is positioned in the interphone body and used for storing noise data; and the processing circuit 4 is positioned in the interphone body and is connected with the noise database 3.

Specifically, the outer part of the interphone body is an ear-hanging shell, so that a user can conveniently use the interphone by hanging the interphone on the ear. This device makes through public network communication module 1 and can pass through antenna connection with public network within a definite time, uses as public network intercom, and communication module is the ripe part of current intercom, no longer gives unnecessary details its structure. The principle of communication devices is to convert between vibration sounds and electrical signals for sound transmission.

In the device, a processing circuit 4 is used for preprocessing noise entering a public network communication module 1, the principle of the processing circuit 4 is the same as that of the existing noise reduction circuit 2, and sound waves with opposite phases and the same amplitude with low-frequency noise are generated to be used as cancellation noise, unlike the noise reduction circuit 2, however, the processing circuit 4 generates only a canceling sound wave of small amplitude close to the user talking sound wave, for example, the intensity of the sound of a normal human speech is 40-60db, the canceling noise generated by the processing circuit 4 is mainly used for canceling small distinctive noise sound waves in the interval of 30-40db, 60-70db, of course, the above-mentioned division by decibels is only an example, and it can also be distinguished by sound frequency, for example, if the frequency of normal speaking of a person is 100-500 Hz, the canceling noise generated by the processing circuit 4 is mainly used for canceling the small-difference noise sound wave in the interval of 50-100Hz, 500-550 Hz. Belonging to the field of primary small-amplitude noise reduction.

After the processing circuit 4 eliminates the noise close to the user call sound wave, the other noise sound waves with large differences (such as 20-30db, 70-80db or 0-50Hz, 550-800Hz) are more obvious in difference compared with the call sound wave, and are easier to be identified and matched by the noise database, and then the noise reduction circuit 2 generates cancellation sound waves for canceling the part of noise, so that the method belongs to secondary accurate noise reduction.

The noise database comprises a sound sensor (for measuring sound intensity or frequency) and a memory, and judges whether the voice belongs to noise (for example, the voice obviously exceeding the normal conversation decibel can be regarded as noise) or directly through voice recognition (for example, similar to a voice recognition function, the voice can be regarded as noise when a corresponding sentence cannot be found from the database), and the main purpose is to feed back the noise reduction circuit 2 to accurately offset the corresponding noise, otherwise, offset noise is generated when the offset sound intensity is higher than the noise.

Example 2

And the mobile phone also comprises a receiver 5 connected with the public network communication module 1. A microphone 6 is also included which is connected to the processing circuit 4. The noise reduction circuit 2 is connected to a noise database 3. The noise reduction circuit 2 is a DSP noise reduction circuit 2. The processing circuit 4 is a DSP processing circuit 4. And a power supply system 7 is also arranged in the interphone body. A PCB (not shown) is arranged in the interphone body, and the public network communication module 1, the noise reduction circuit 2, the noise database 3 and the processing circuit 4 are integrated on the PCB and are powered through a power supply system 7.

Specifically, the earphone receiver 5 is fixed on the interphone body and connected with the public network communication module 1. The microphone 6 is used for receiving voice information and transmitting an electric signal to the public network communication module 1. The noise reduction circuit 2 is connected to the noise database 3 to receive the frequency of the noise to be cancelled fed back by the noise database 3. The noise reduction circuit 2 and the processing circuit 4 are respectively a DSP noise reduction circuit 2 and a DSP processing circuit 4, DSP noise reduction (digital signal processing) is a mature noise reduction method, external environment noise is collected through the microphone 6, then a reverse sound wave equal to the external environment noise is copied by a system, and the noise is offset, so that noise reduction effect is achieved, the application is provided in many noise reduction devices at present, a plurality of products can be found by searching DSP noise reduction through an online mall, the noise reduction circuit is applied, and the principle of the noise reduction circuit is not described any more. And a power supply system 7 in the interphone is electrically connected with the elements and the circuit for supplying power.

Example 3

The microphone 6 is provided with a noise reduction structure. Still include antenna 8, antenna 8 is FPC flexible flat antenna or spring antenna, and antenna 8 is connected with public network communication module 1.

Specifically, in order to further improve the noise reduction effect, the microphone 6 itself may have a certain noise reduction capability through the noise reduction structure. For example, a specific implementation is proposed, in which a housing of the microphone 6 is designed to be a multi-layer hollow structure, so that the housing of the microphone 6 is changed from a single layer to a plurality of layers on the premise that the volume of the microphone is not changed, and noise enters the microphone 6 from the outside. The antenna 8 is used for the public network communication module 1 to transmit voice information, and the FPC flexible flat antenna or the spring antenna are common antenna types, so that existing products can be found in online or offline shopping malls, and the principle of the FPC flexible flat antenna or the spring antenna is not repeated.

The working principle of the device is as follows:

the public network communication module 1 can be applied to a public network interphone for use; the processing circuit 4 firstly carries out a small noise reduction processing on the sound input into the interphone, and the conversation voice is not damaged because the processing degree is low; then the noise database 3 identifies the environment noise after the primary processing, and then offsets the noise through the noise reduction circuit 2, thereby realizing more accurate secondary noise reduction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an ear-hanging public network intercom of making an uproar falls which characterized in that includes:

the interphone body is internally provided with a public network communication module;

the noise reduction circuit is positioned in the interphone body and is connected with the public network communication module;

the noise database is positioned in the interphone body and used for storing noise data;

and the processing circuit is positioned in the interphone body and is connected with the noise database.

2. The noise-reducing ear-hanging type public network interphone according to claim 1, further comprising an earphone connected with the public network communication module.

3. The noise reducing ear-hung public network interphone according to claim 1, further comprising a microphone connected with the processing circuit.

4. The noise-reducing ear-hanging type public network interphone according to the claim 1, wherein the noise-reducing circuit is connected with a noise database.

5. The noise-reducing ear-hanging type public network interphone according to claim 1, wherein the noise-reducing circuit is a DSP noise-reducing circuit.

6. The noise reducing ear-hanging type public network interphone according to claim 1, wherein the processing circuit is a DSP processing circuit.

7. The noise-reducing ear-hanging type public network interphone according to the claim 1, characterized in that a power system is further arranged in the interphone body.

8. The noise-reducing ear-hanging type public network interphone according to claim 7, wherein a PCB is arranged in the interphone body, and the public network communication module, the noise-reducing circuit, the noise database and the processing circuit are all integrated on the PCB and powered by the power system.

9. The noise-reducing ear-hanging type public network interphone according to the claim 3, wherein the microphone is provided with a noise-reducing structure.

10. The noise-reducing ear-hanging type public network interphone according to claim 1, further comprising an antenna, wherein the antenna is an FPC (flexible printed circuit) flexible antenna or a spring antenna, and is connected with the public network communication module.