WO2021088806A1

WO2021088806A1 - Audio output module and electronic device

Info

Publication number: WO2021088806A1
Application number: PCT/CN2020/126174
Authority: WO
Inventors: 彭功良
Original assignee: 深圳市万普拉斯科技有限公司
Priority date: 2019-11-04
Filing date: 2020-11-03
Publication date: 2021-05-14
Also published as: CN112788168A

Abstract

The present invention relates to an audio output module and an electronic device. The audio output module comprises an audio processor and multiple receivers, wherein the audio processor is used for processing audio signals into multiple frequency band signals, and each frequency band signal has a preset frequency band; and each of the receivers is respectively electrically connected to the audio processor, and each of the receivers is used for outputting one of the frequency band signals.

Description

Audio output module and electronic equipment

This application claims the priority of a Chinese patent application with the application number 201911067138.2 and titled "Audio Output Module and Electronic Equipment" filed with the Chinese Patent Office on November 4, 2019, the entire content of which is incorporated into this application by reference.

Technical field

The present invention relates to the field of communication technology, in particular to an audio output module and electronic equipment.

Background technique

With the continuous development of electronic device technology, users have higher and higher requirements for the functions of electronic devices. Electronic equipment usually includes two sound-producing devices, one is called a receiver (also called a receiver), and the other is called a speaker (commonly called a horn). The earpiece is mainly used in the "handset mode", and the speaker is generally used in the "speaker mode". In the "handset mode", users need to put their ears close to the earpiece of the electronic device to clearly hear the sound from the earpiece. The earpiece needs to be designed acoustically to have the best acoustic response when coupled with the human ear, so that the electronic device can achieve better privacy in the "earpiece mode".

As the voice call bandwidth has evolved from narrowband calls to broadband calls, and then to ultra-wideband or even full frequency bands, the earpieces have also evolved from narrowband earpieces to broadband earpieces.

Summary of the invention

The present application provides an audio output module and electronic equipment including: an audio processor for processing audio signals into multiple frequency band signals, each frequency band signal having a preset frequency band; and multiple earpieces, each earpiece being used for output One of the plurality of frequency band signals.

In one of the embodiments, it further includes a plurality of power amplifiers corresponding to the earpiece one-to-one, and each power amplifier is connected between a corresponding earpiece and the audio processor, and each power amplifier is used to adjust the audio processing. The gain of the frequency band signal output from the receiver to a corresponding earpiece.

In one of the embodiments, it further includes a plurality of equalizers corresponding to the power amplifier one-to-one, each equalizer is connected between a corresponding power amplifier and the audio processor, and each equalizer is used to adjust the The gain of the frequency band signal output from the audio processor to a corresponding earpiece.

In one of the embodiments, it further includes a plurality of filters corresponding to the earpiece one-to-one, each filter is connected between a corresponding earpiece and the audio processor, and each filter is used to filter out a corresponding frequency band Audio signal other than the signal.

In one of the embodiments, a decoder is further included, and the decoder is used to decode and restore the audio signal into an analog audio signal.

The present application also provides an electronic device, which includes the above-mentioned audio output module.

In one of the embodiments, it further includes a bracket and a middle frame, and the plurality of earpieces are arranged at intervals between the bracket and the middle frame.

In one of the embodiments, the bracket is provided with a sound hole, the bracket, the middle frame, and the plurality of earpieces enclose a sound cavity, and the plurality of earpieces pass through the sound cavity and the output hole. The sound holes are connected.

In one of the embodiments, it further includes a sound cover arranged on the bracket and enclosing the sound hole, and a plurality of through holes are opened on the sound cover.

The details of one or more embodiments of the present invention are set forth in the following drawings and description. Other features, objects and advantages of the present invention will become apparent from the description, drawings and claims.

Description of the drawings

In order to better describe and illustrate the embodiments of the present application, one or more drawings may be referred to, but the additional details or examples used to describe the drawings should not be considered as the invention and the implementation of the present description of the present application. The scope of any one of the examples or preferred modes is limited.

Fig. 1 is a functional module diagram of an electronic device in an embodiment;

Figure 2 is a functional block diagram of an audio output module in an embodiment;

Figure 3 is a functional block diagram of an audio output module in another embodiment;

FIG. 4 is a schematic diagram of the structure of an electronic device in an embodiment.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be more fully described below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time.

Please refer to FIG. 1, which is a schematic structural diagram of an electronic device in an embodiment. The electronic device includes a memory 10, a processor 20, a radio frequency module 30, a network module 40, an audio output module 50, an audio and video input module 60, a sensor 70, a display module 80, a user input module 90, an interface module 101, and a power supply 102. Electronic equipment includes, but is not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle terminals, and wearable devices.

The memory 10 can be used to store software programs and various data. The memory 10 mainly includes a program storage area and a data storage area. The program storage area can store an operating system and at least one application program (such as a sound playback function, an image playback function, etc.) required by a function; the data storage area can store Data created by the use of the device (such as audio data). In addition, the memory 10 may include a high-speed random access memory 10, and may also include a non-volatile memory 10, such as at least 10 pieces of magnetic disk storage, 10 pieces of flash memory devices or other volatile solid-state memories.

As the control center of the electronic device, the processor 20 uses various interfaces and lines to connect various parts of the entire electronic device, and executes the operation of the electronic device by running or executing the application program stored in the memory 10 and calling the data stored in the memory 10 Various functions and processing data to monitor the electronic equipment as a whole.

The radio frequency module 30 is used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, the radio frequency module 30 receives the downlink data from the base station and sends it to the processor 20 for processing; and also sends the uplink data to the base station. The radio frequency module 30 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency module 30 can also communicate with the network and other devices through a wireless communication system.

The network module 40 is used to enable electronic devices to access the Internet through a wireless network, such as sending and receiving emails, browsing web pages, and so on.

The audio output module 50 can convert the audio data received by the radio frequency module 30 or the network module 40 or stored in the memory 10 into a sound signal and output it as sound. The audio output module 50 may also provide audio output related to a specific function performed by the electronic device.

Referring to Figure 2, the audio output module 50 also includes an audio processor 51, a receiver 52, a decoder 53, and a speaker 54. The audio processor 51 is used to process the audio signal into multiple frequency band signals, and each frequency band signal has a preset Frequency band.

There are multiple earpieces 52, each earpiece 52 is electrically connected to the audio processor 51, and each earpiece 52 is used to output a frequency band signal.

In one embodiment, the number of earpieces 52 is two, and one earpiece 52 is a moving coil earpiece, and the other is a moving iron earpiece. The audio processor 51 processes the audio signal into two frequency band signals, one of which is an audio signal with a frequency lower than 4 kHz, that is, a low-frequency signal, and the other is an audio signal with a frequency higher than 4 kHz, that is, a high-frequency signal. The moving coil earpiece is used to output low frequency signals, and the moving iron earpiece is used to output high frequency signals. Since the diaphragm of the moving coil earpiece is thin and flexible, and the diaphragm of the moving iron earpiece has good rigidity, the combination of the two earpieces 52 can output low-frequency and high-frequency audio signals, that is, output full-range audio signals.

In an embodiment, the audio output module 50 further includes a plurality of power amplifiers 55 corresponding to the earpiece 52 one-to-one, and each power amplifier 55 is connected between a corresponding earpiece 52 and the audio processor 51, and each power amplifier 55 is used for To adjust the gain of the frequency band signal output from the audio processor 51 to the corresponding earpiece 52. By adjusting the gain of the power amplifier 55, the superposition of the sounds emitted by the multiple earpieces 52 can be more balanced, and the sound quality effect can be better.

In an embodiment, the audio output module 50 further includes a plurality of equalizers 56 corresponding to the power amplifier 55 one-to-one, and each equalizer 56 is connected between a corresponding power amplifier 55 and the audio processor 51, and each equalizer 56 is used to adjust the gain of the frequency band signal output from the audio processor 51 to the corresponding earpiece 52. By adjusting the gain of the frequency band signal output to the earpiece 52 by the equalizer 56, the sound output by the earpiece 52 can be optimized, so that the superposition of the sounds from the multiple earpieces 52 is more balanced and the sound quality effect is better.

3, in an embodiment, the audio output module 50 further includes a plurality of filters 57 corresponding to the earpiece 52 one-to-one, each filter 57 is connected between a corresponding earpiece 52 and the audio processor 51, each Each filter 57 is used to filter out audio signals other than signals corresponding to one frequency band. The filter 57 filters out audio signals other than the corresponding one frequency band signal, so that the frequency band signal output to each earpiece 52 is not affected by other clutter signals, and the sound emitted is purer, so that the sound superimposed by multiple earpieces 52 is more balanced , The sound is clearer. The filter 57 may include a capacitor.

The decoder 53 is used to decode and restore the audio signal into an analog audio signal.

The audio and video input module 60 is used to receive audio or video signals. The audio and video input module 60 may include a graphics processor and a microphone. The graphics processor processes image data of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed by the display module 80. The image frame processed by the graphics processor can be stored in the memory 10 (or other storage medium) or sent via the radio frequency module 30 or the network module 40. The microphone can receive sound via the microphone in operating modes such as telephone call mode, recording mode, and voice recognition mode, and process the sound into audio signals. The processed audio signal can be converted into a format that can be sent to the base station via the radio frequency module 30 for output in the telephone call mode.

The sensor 70 includes a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display module 80 according to the brightness of the ambient light, and the proximity sensor can turn off the brightness of the display module 80 when the electronic device is close to the user's ear. display. The motion sensor may include an accelerometer sensor. The electronic device may also include a fingerprint sensor, a pressure sensor, an iris sensor, an infrared sensor, and other sensors, which will not be repeated here.

The display module 80 is used to display information input by the user or information provided to the user. The display module 80 may include a display panel. The display panel can be configured in the form of a liquid crystal display or an organic light emitting diode.

The user input module 90 may be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the electronic device. Specifically, the user input module 90 may include a touch screen and other input devices. Other input devices may include, but are not limited to, one or more of physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, joystick, etc., which are not specifically limited here.

The interface module 101 is used as an interface for connecting an electronic device with an external device. The interface module 101 may include a headphone port, a power port, a data port, a memory card port, an audio input/output port, a video input/output port, and so on. The electronic device performs data transmission with an external device through the interface module 101.

The power supply 102 is used to supply power to various components of the electronic device.

4, the electronic device also includes support or installation of the above-mentioned memory 10, processor 20, radio frequency module 30, network module 40, audio output module 50, audio and video input module 60, sensor, display module 80, user input module 90, The bracket 201 and the middle frame 202 of the interface module 101 and the power supply 102. The display panel is arranged on the bracket 201.

A plurality of earpieces 52 are arranged between the bracket 201 and the middle frame 202 at intervals. The bracket 201 and the middle frame 202 are used to install the earpiece 52, and the spaced arrangement of the plurality of earpieces 52 can make the superposition of the sounds of the earpiece 52 more balanced.

The bracket 201 is provided with a sound hole 2011, the bracket 201, the middle frame 202 and a plurality of earpieces 52 surround a sound cavity 203, and the plurality of earpieces 52 are in communication with the sound hole 2011 through the sound cavity 203. The sounds of the multiple earpieces 52 are collected through the sound cavity 203 and then emitted through a sound hole 2011, which can make the sound quality effect better.

The electronic device further includes a sound cover 204 which is arranged on the bracket 201 and surrounds the sound hole 2011, and the sound cover 204 is provided with a plurality of through holes. The sound cover 204 is used to prevent foreign objects from entering the sound hole 2011 and affect the sound of the earpiece 52.

The above audio output module 50 and electronic equipment process the audio signal into multiple frequency band signals through the audio processor 51, each frequency band signal has a preset frequency band, and each frequency band signal responds to sound through an earpiece 52, so as to realize the response to the audio signal. The full frequency response output.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several embodiments of the present invention, and the descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

An audio output module, characterized in that it comprises:

An audio processor for processing audio signals into multiple frequency band signals, each frequency band signal having a preset frequency band; and

A plurality of earpieces, each earpiece is used to output one of the plurality of frequency band signals.
The audio output module of claim 1, further comprising a plurality of power amplifiers corresponding to the earpiece one-to-one, each power amplifier is connected between a corresponding earpiece and the audio processor, each The power amplifier is used to adjust the gain of the frequency band signal output by the audio processor to the corresponding earpiece.
The audio output module according to claim 2, further comprising a plurality of equalizers corresponding to the power amplifiers one-to-one, and each equalizer is connected between a corresponding power amplifier and the audio processor, Each equalizer is used to adjust the gain of the frequency band signal output by the audio processor to the corresponding earpiece.
The audio output module according to claim 1, further comprising a plurality of filters corresponding to the earpiece one-to-one, each filter is connected between a corresponding earpiece and the audio processor, each The filter is used to filter out audio signals other than those corresponding to a frequency band.
The audio output module according to claim 1, further comprising a decoder, which is used to decode and restore the audio signal into an analog audio signal.
The audio output module according to claim 1, wherein the number of the earpieces is two, one of which is a moving coil earpiece, and the other is a moving iron earpiece.
An electronic device, characterized in that it comprises the audio output module according to any one of claims 1-6.
8. The electronic device according to claim 7, further comprising a bracket and a middle frame, and the plurality of earpieces are arranged at intervals between the bracket and the middle frame.
The electronic device according to claim 8, wherein the bracket is provided with a sound hole, the bracket, the middle frame, and the plurality of earpieces form a sound cavity, and the plurality of earpieces pass through the sound cavity. The sound cavity is communicated with the sound hole.
8. The electronic device according to claim 7, further comprising a sound cover arranged on the bracket and surrounding the sound hole, and the sound cover is provided with a plurality of through holes.