CN112653780A - Mobile terminal and method of controlling audio signal of mobile terminal - Google Patents
Mobile terminal and method of controlling audio signal of mobile terminal Download PDFInfo
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- CN112653780A CN112653780A CN201910920131.4A CN201910920131A CN112653780A CN 112653780 A CN112653780 A CN 112653780A CN 201910920131 A CN201910920131 A CN 201910920131A CN 112653780 A CN112653780 A CN 112653780A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
- H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- Acoustics & Sound (AREA)
- Headphones And Earphones (AREA)
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Abstract
The present disclosure relates to a mobile terminal and a method of controlling an audio signal of the mobile terminal. The mobile terminal includes: a handset; the front sound outlet hole is communicated with the earphone; the rear sound outlet hole is communicated with the receiver through a rear sound outlet channel and is arranged on the back of the mobile terminal; an audio codec and a sonication engine electrically connected via the audio codec to the earpiece; and the micro valve is arranged at the rear sound outlet channel, and the opening of the micro valve is adjustable. The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the voice leakage of the terminal in the conversation process is effectively prevented, information confidentiality is realized, the conversation quality is guaranteed, the problem of damage of other additional equipment is solved, and the personal health is protected.
Description
Technical Field
The present disclosure relates to the field of audio processing technologies, and in particular, to a mobile terminal and a method of controlling an audio signal of the mobile terminal.
Background
With the increasing development of communication technology, terminal devices such as mobile phones and the like become indispensable necessities of people in daily life and work, and great convenience is brought to the contact among people, relatives, friends, colleagues and the like.
At present, in the process of a mobile phone conversation, especially for a person with hearing impairment, the voice is turned down, the person cannot hear clearly the conversation, the voice is turned up, the content of the telephone leaks to the periphery, information is leaked after the telephone is heard by the surrounding person, and many methods are adopted for preventing the information leakage. However, both wired earphones and wireless Bluetooth earphones are inconvenient to carry, cables are easy to break, the earphones easily hurt the ear canals and eardrums, and hearing is reduced.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a mobile terminal and a method of controlling an audio signal of the mobile terminal.
According to an aspect of the present disclosure, there is provided a mobile terminal including: a handset; the front sound outlet hole is communicated with the earphone; the rear sound outlet hole is communicated with the receiver through a rear sound outlet channel and is arranged on the back of the mobile terminal; an audio codec and a sonication engine electrically connected to the earpiece via the audio codec; and the micro valve is arranged at the rear sound outlet channel, and the opening of the micro valve is adjustable.
In one embodiment, the receiver is fixed inside the mobile terminal and disposed between the front sound outlet hole and the rear sound outlet hole, the receiver includes a vibrating diaphragm, a front sound outlet channel is disposed between the vibrating diaphragm and the front sound outlet hole, and the receiver further includes magnetic steel facing the rear sound outlet channel.
In one embodiment, the rear sound outlet hole is disposed at a position of the back surface of the mobile terminal near the top end, the first side of the micro valve faces the magnetic steel, and the second side of the micro valve faces the rear sound outlet hole, wherein the amplitude of the audio signal output from the receiver to the rear sound outlet hole is adjusted by adjusting the size of the opening of the micro valve.
In one embodiment, the mobile terminal further comprises: a first microphone disposed on a rear face of the mobile terminal, wherein the sonication engine is electrically connected to the first microphone via the audio codec.
In one embodiment, the mobile terminal further comprises: and the dustproof net is arranged between the micro valve and the rear sound outlet hole.
In one embodiment, the mobile terminal further comprises a second microphone disposed on a top portion of the mobile terminal. In one embodiment, the first microphone is disposed at an upper central location on a back side of the mobile terminal.
In one embodiment, the front sound emitting hole is disposed at an interface position of a top surface and a front surface of the mobile terminal, a top portion, a bottom portion, or a front surface.
According to another aspect of the present disclosure, there is provided a method of controlling an audio signal of a mobile terminal, the mobile terminal being the mobile terminal according to the above embodiment, the method including: adjusting the opening of the micro valve; through adjusting the size of trompil, adjust the earphone and generate treating the amplitude of the second audio signal of via the microvalve door transmission to back sound hole, realize to the earphone generate treat transmit the regulation of the intensity of the first audio signal of preceding sound hole.
In one embodiment, the opening of the regulating microvalve comprises: receiving a first ultrasonic signal detected by the first microphone; inputting the first ultrasonic signal into the ultrasonic processing engine for processing to obtain a human body distance; and adjusting the opening of the micro valve according to the human body distance and the preset human body distance value.
In one embodiment, the opening of the regulating microvalve further comprises: and when the human body distance is smaller than the preset human body distance value, the opening of the micro valve is adjusted to be enlarged. And when the human body distance is greater than or equal to the preset human body distance value, the opening of the micro valve is adjusted to be smaller.
In one embodiment, the inputting of the first digital ultrasound signal into the ultrasound processing engine for processing to obtain the body distance comprises: recording a second point in time at which the ultrasound processing engine controls the earpiece to generate a second ultrasound signal; recording a first point in time at which the first microphone detects the first ultrasonic signal; calculating a time difference between the second time point and the first time point; calculating the human body distance based on the time difference.
In one embodiment, the method further comprises: transmitting the second digital ultrasonic signal generated by the ultrasonic processing engine and a third digital audio signal received from the mobile terminal to the audio codec; decoding the second digital ultrasonic signal and the third digital audio signal in the audio codec respectively to obtain a second analog ultrasonic signal and a third analog audio signal; propagating the second analog ultrasonic signal and the third analog audio signal to the earpiece exterior via the front sound exit hole.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the voice leakage of the terminal in the conversation process is effectively prevented, information confidentiality is realized, the conversation quality is guaranteed, the problem of damage of other additional equipment is solved, and the personal health is protected.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram illustrating a structure of a mobile terminal according to an exemplary embodiment of the present disclosure.
Fig. 2 is a block diagram illustrating a structure of a mobile terminal according to an exemplary embodiment of the present disclosure.
Fig. 3 is a perspective view illustrating a mobile terminal according to an exemplary embodiment of the present disclosure.
Fig. 4 is a perspective view illustrating a mobile terminal according to an exemplary embodiment of the present disclosure.
Fig. 5 is a view illustrating a usage scenario of a mobile terminal according to an exemplary embodiment of the present disclosure.
Fig. 6 is a flowchart illustrating a method of controlling an audio signal of a mobile terminal according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with an aspect of the invention, as detailed in the claims that follow.
Fig. 1 is a schematic diagram illustrating a structure of a mobile terminal according to a first exemplary embodiment of the present disclosure. Fig. 2 is a block diagram illustrating a structure of a mobile terminal according to a first exemplary embodiment of the present disclosure. Fig. 3 is a perspective view illustrating a mobile terminal according to a first exemplary embodiment of the present disclosure. Fig. 4 is a perspective view illustrating a mobile terminal according to a second exemplary embodiment of the present disclosure.
Referring to fig. 1 to 4, a mobile terminal 100 includes: an earpiece 120; a front sound outlet hole 111 communicating with the earpiece 120; a rear sound outlet hole 112, which is communicated with the earpiece 120 through a rear sound outlet channel 116, wherein the rear sound outlet hole 112 is disposed on the back of the mobile terminal 100; an audio codec 170 and a sonication engine 151, said sonication engine 151 being electrically connected to said earpiece 120 via said audio codec 170; a micro valve 130 disposed at the rear sound outlet channel 116, wherein an opening of the micro valve 130 is adjustable.
The mobile terminal 100 having the above-described structure has two audio output channels disposed opposite to each other, and the audio output through the two opposite output channels has opposite phases, the same amplitude and frequency. Therefore, in case that the two channels are fully opened, the audio output from the two channels destructively interfere, and thus the sound is not heard from the outside of the mobile terminal. In general, after one of the channels is blocked, only one channel is left to transmit audio, so that a common loudspeaker is formed. In the present embodiment, the reduction of the intensity of the audio leaking to the outside is achieved by adjusting the magnitude of the amplitude of the audio of one channel, thereby implementing the principle of partial destructive interference of the audio of another channel. In this embodiment, the microvalve 130 is electrically controlled, shares power and ground, and enables three paths, wherein the enabling signal comes from the GPIO port of the terminal platform.
The mobile terminal 100 with the above structure can achieve the partial destructive interference of the audio transmitted by the front sound outlet 111 through the adjustment of the amplitude of the audio transmitted by the rear sound outlet 112 through the adjustment of the micro valve 130, thereby effectively preventing the sound leakage, ensuring the information confidentiality, and simultaneously ensuring the communication quality without information confidentiality through devices such as earphones, solving the problem of damage of other additional devices, avoiding the damage of ears by earphones, and protecting the personal health.
In this embodiment, the size of the opening of the microvalve 130 needs to be adjusted according to the distance of the person approaching, and there are many methods for measuring the distance of the person approaching, for example, infrared rays, temperature sensors, or image capturing methods. However, the monitoring effect of the infrared or thermal sensitive element is influenced by the user or other factors, so that the effect is not good, the calculated amount of the mobile phone is increased by the monitoring of the camera, and the performance of the mobile phone is influenced.
In one embodiment, the mobile terminal 100 further includes: an audio codec 170, the ultrasonic processing engine 151 being electrically connected to the earpiece 120 via the audio codec 170, wherein the ultrasonic processing engine 151 is configured to process the received first ultrasonic signal and to control the earpiece 120 to generate a second ultrasonic signal.
The mobile terminal 100 receives an ultrasonic signal transmitted from the outside as an analog signal. In order to analyze the approaching behavior of the task, the first ultrasonic signal needs to be calculated and analyzed to obtain the approaching distance data of the person, and therefore, after receiving the analog signal of the first ultrasonic signal, the mobile terminal 100 needs to perform decoding through the audio codec 170, that is, a process of converting the analog signal into a digital signal. The digital signal of the first ultrasonic wave is then transmitted to the ultrasonic processing engine 151 in the processor 150 for the above-described processing. In addition, in order to acquire the person approach information as described above, the received first ultrasonic signal is a signal reflected by an approaching person, which needs to be transmitted from the mobile terminal 100, i.e., the second ultrasonic signal of the present embodiment. Accordingly, the mobile terminal 100 is required to generate the second ultrasonic signal, which requires the ultrasonic processing engine 151 to send control instructions to the handset 120, which generates the second ultrasonic signal by the handset 120. In this embodiment, the sonication engine 151 recommends a more mature market solution, such as an oval lab or the like. The audio codec 170 sample rate suggests above 96 kHz.
The second ultrasonic signal transmitted as described above is generated from the earpiece 120 and emitted through the front sound emitting hole 111, and thus, the placement of the earpiece 120 in the mobile terminal 100 is particularly important.
In one embodiment, the receiver 120 is fixed inside the mobile terminal 100 and disposed between the front sound outlet hole 111 and the rear sound outlet hole 112, the receiver 120 includes a vibrating diaphragm (not shown), a front sound outlet channel 117 is disposed between the vibrating diaphragm and the front sound outlet hole 111, and the receiver 120 further includes a magnetic steel (not shown), and the magnetic steel faces the rear sound outlet channel 116.
The earpiece 120 in this embodiment is arranged as a conventional loudspeaker, i.e. an audio signal is formed by vibrations generated by the diaphragm of the earpiece 120 and transmitted to the ear of the user. In the present embodiment, the front sound output hole 111 serves as a main sound output hole, and the user acquires audio information through the front sound output hole 111. In the mobile terminal 100, one side of the diaphragm of the earpiece 120 is opposite to the front sound outlet hole 111, one side of the magnetic steel is opposite to the rear sound outlet hole 112, a front sound outlet channel 117 for sending an audio signal is formed between the diaphragm and the front sound outlet hole 111, and a rear sound outlet channel 116 is formed between the magnetic steel and the rear sound outlet hole 112.
In addition to the above-mentioned arrangement of the earpiece 120, the main component for the purpose of adjusting the audio amplitude of the rear sound outlet hole 112 of the present disclosure is the microvalve 130, and therefore, the arrangement of the microvalve 130 in the mobile terminal 100 is also particularly important.
In one embodiment, the rear sound outlet hole 112 is disposed at a position of the back surface of the mobile terminal 100 near the top end, a first side of the micro valve 130 faces the magnetic steel, and a second side of the micro valve 130 faces the rear sound outlet hole 112, wherein the amplitude of the audio signal output from the earpiece 120 to the rear sound outlet hole 112 is adjusted by adjusting the size of the opening of the micro valve 130.
The rear sound outlet hole 112 is arranged at a position close to the top end of the back of the mobile terminal 100, so that the situation that the hand shields the rear sound outlet hole 112 to form a receiver similar to a conventional loudspeaker cannot be realized, and mutual offset of the audio frequency of the rear sound outlet hole 112 and the audio frequency of the front sound outlet hole 111 cannot be realized, so that the purpose of weakening the audio frequency sent from the front sound outlet hole 111 is achieved, and the confidentiality function cannot be effectively realized.
As described above, the size of the opening of the micro valve needs to be adjusted according to the approaching distance of the person, and the approaching distance of the person is measured by the first ultrasonic signal reflected by the approaching person. Since the mobile terminal 100 needs to receive the reflected first ultrasonic signal and then perform calculation analysis on the received first ultrasonic signal, a component for receiving the ultrasonic signal needs to be provided on the mobile terminal 100. In one embodiment, the mobile terminal 100 further includes: a first microphone 161 disposed on the rear side 113 of the mobile terminal 100, wherein the sonication engine 151 is electrically connected to the first microphone 161 via the audio codec 170.
The mobile terminal 100 receives the first ultrasonic signal through the first microphone 161, and therefore, in the present embodiment, the first microphone 161 is disposed at the rear surface 113 so as to receive information that a person around the mobile terminal approaches to the maximum extent. The received first ultrasonic signal is an analog signal, and the ultrasonic processing engine 151 needs to convert the first ultrasonic signal into a digital signal when performing calculation analysis on the first ultrasonic signal, so that the first microphone 161 receives the first ultrasonic signal and decodes the first ultrasonic signal by the audio codec 170, that is, converts the analog signal into a digital signal, and then transmits the digital signal to the ultrasonic processing engine 151.
The rear sound outlet hole 112 is formed in the mobile terminal 100, and compared with the existing mobile terminal 100, a through hole communicated with the outside is formed, so that the possibility that outside dust enters the mobile terminal 100 is increased, and the dust entering the mobile terminal has great influence on the performance of each internal component.
In one embodiment, the mobile terminal 100 further includes: a dust screen 140 disposed between the micro valve 130 and the rear sound outlet hole 112.
By providing the dust screen 140, dust entering through the rear sound outlet hole 112 is effectively blocked, ensuring cleanliness of the interior of the mobile terminal 100.
As described above, the second ultrasonic wave is transmitted through the front sound output hole 111, and when the second ultrasonic wave is reflected after encountering a person near the mobile terminal 100, the first ultrasonic wave signal is received by the first microphone 161 on the back surface 113 of the mobile terminal 100. Similarly, the approach behavior of the user itself may also be detected by using ultrasonic waves, so that the mobile terminal 100 can implement the screen locking function to avoid misoperation.
In one embodiment, the mobile terminal 100 further includes a second microphone 162, and the second microphone 162 is disposed on the top portion 114 of the mobile terminal 100.
The second ultrasonic signal sent by the front sound outlet 111 is reflected by the user, and then the reflected ultrasonic signal is received by the second microphone 162, so that the behavior of the user approaching the mobile terminal is judged, and the screen locking is realized, so that the misoperation caused by the fact that the face skin touches the touch screen when the user uses the mobile terminal 100 is avoided.
As described above, in order to prevent the rear sound outlet 112 from being blocked by a hand and thus losing the adjustment function of the audio transmitted through the front sound outlet 111, the rear sound outlet 112 is disposed at a position above the rear surface 113 of the mobile terminal 100. The first microphone 161 is used for receiving the first ultrasonic signal reflected by the surrounding person, and the same problem exists, if the first ultrasonic signal is blocked, the intensity of the first ultrasonic signal is affected, and therefore the mobile terminal 100 misjudges the distance between the person and the mobile terminal. In one embodiment, the first microphone 161 is disposed at an upper central location on the back side 113 of the mobile terminal 100.
The first microphone 161 is configured to receive the first ultrasonic signal, and in order to ensure that the received first ultrasonic signal is not affected, the first microphone 161 is disposed on a position of the back surface of the mobile terminal 100, where the first microphone 161 is disposed on a central upper position of the back surface 113 in this embodiment. For example, the upper position of the back of the shell of the mobile phone in the middle can not be shielded by hands and the like, so that the receiving of audio signals is ensured.
In addition to providing the first microphone 161 and the rear sound outlet 112 at a position centered on the upper side of the back surface, the position of the front sound outlet 111 is important, for example, a mobile phone, and the front sound outlet 111 is the receiver of the mobile phone and is generally disposed above the screen. In the mobile terminal 100 of the present embodiment, the front sound outlet hole 111 transmits a second ultrasonic signal for detecting a user and a person in various directions around the mobile terminal in addition to the audio signal, and thus the position of the front sound outlet hole 111 is also important.
In one embodiment, the front sound outlet 111 is disposed at the interface of the top surface 114 and the front surface 115 of the mobile terminal 100, at the top, at the bottom, or at the front.
Generally, the front sound outlet hole 111, for example, the handset of the mobile phone is disposed near the upper edge of the front side, most of the second ultrasonic signal sent from the handset is transmitted toward the front side, when it is to be detected whether a person approaches in other directions around the mobile phone, because the second ultrasonic signal cannot be sent to the back side, the first microphone 161 cannot receive the first ultrasonic signal, and the function of detecting whether a person approaches cannot be realized, therefore, in this embodiment, the front sound outlet hole 111 of the mobile terminal 100 is disposed at the junction between the front side 115 and the top side 114, so that the ultrasonic audio sent from the front sound outlet hole 111 can be sent to the outside in the largest area, and the effect of ultrasonic transmission is effectively improved. In this embodiment, the front sound emitting hole has a width not less than 0.5mm and a length greater than 10mm, and the second ultrasonic wave can be transmitted with a good effect.
Fig. 5 is a view illustrating a usage scenario of a mobile terminal according to an exemplary embodiment of the present disclosure.
Referring to fig. 5, as an example, the second ultrasonic signal is transmitted from the front sound emission hole 111 to the outside, and since the front sound emission hole 111 is disposed at the boundary between the top surface 114 and the front surface 115, the second ultrasonic signal may be transmitted from the front, the upper side to the rear side, or both sides of the mobile terminal 100. The second ultrasonic signal transmitted forward is reflected by the user P2, and then received by the second microphone 162 disposed on the top surface, and processed by the ultrasonic processing engine 151, and the distance between the user P2 and the mobile terminal 100 is determined, and when the distance reaches a preset value, the screen is locked. When the second ultrasonic signal transmitted backward is reflected by person P1 approaching behind mobile terminal 100, first microphone 161 receives the first ultrasonic signal and processes it by ultrasonic processing engine 151, and then determines the distance of surrounding person P1 approaching the mobile terminal. When the distance reaches a preset value, an adjustment instruction of the micro valve 130 is sent to the receiver 120, the opening of the micro valve 130 is gradually increased along with the decrease of the distance, and the opening of the micro valve 130 is gradually decreased along with the increase of the distance.
With the structure, the mobile terminal with the function of preventing the voice information of the user from being leaked is formed. Utilize above-mentioned mobile terminal to carry out through the near distance of perception personage around, through ultrasonic treatment engine to little valve transmission regulation instruction, realize through the regulation of the audio frequency amplitude that back goes out the sound hole and send, the intensity of the audio frequency of going out the sound hole output before the regulation reaches the purpose of avoiding sound to reveal. The method is as follows.
Fig. 6 is a flowchart illustrating a method of controlling an audio signal of a mobile terminal according to an exemplary embodiment of the present disclosure.
Referring to fig. 6, according to another aspect of the present disclosure, there is provided a method of controlling an audio signal of a mobile terminal, the mobile terminal being the mobile terminal provided in the above-described embodiment, the method including: s100, adjusting the opening of the micro valve; s200, adjusting the amplitude of a second audio signal generated by a receiver and to be transmitted to the rear sound outlet through the micro valve by adjusting the size of the opening hole, and adjusting the intensity of a first audio signal generated by the receiver and to be transmitted to the front sound outlet.
The amplitude of the second audio signal of the rear sound outlet is adjusted by the micro valve, the strength of the first audio signal transmitted from the front sound outlet is offset, the audio leakage of the front sound outlet is weakened, the sound leakage is effectively prevented, and the information confidentiality is guaranteed. In a device applying the receiver of the embodiment, such as a mobile phone, the front sound outlet hole of the receiver is tightly attached to the ear of the user, and the influence of the adjustment of the audio amplitude of the rear sound outlet hole on the audio transmitted from the front sound outlet hole to the ear can be almost ignored, so that the communication quality is ensured without using external devices, such as earphones and the like. The damage of the earphone can not be caused, the problem of the damage of other additional equipment is solved, the injury of ears and the like can not be caused, and the personal health is protected.
In one embodiment, the opening of the regulating microvalve comprises: receiving a first ultrasonic signal detected by the first microphone; inputting the ultrasonic signals into the ultrasonic processing engine for processing to obtain a human body distance; and adjusting the opening of the micro valve according to the human body distance and the preset human body distance value.
The first microphone receives a first ultrasonic signal reflected by a surrounding human body, the first ultrasonic signal is processed by the ultrasonic processing engine, the distance is compared with a preset human body distance preset value, and the opening of the micro valve is adjusted according to the comparison result. The amplitude of the audio transmitted by the rear sound outlet is effectively adjusted through the micro valve according to the distance of the surrounding human body, so that the method that the front sound outlet leaks information to the outside is eliminated, and the information confidentiality is ensured.
In one embodiment, the opening of the regulating microvalve further comprises: and when the human body distance is smaller than the preset human body distance value, the opening of the micro valve is adjusted to be enlarged. And when the human body distance is greater than or equal to the preset human body distance value, the opening of the micro valve is adjusted to be smaller.
Specifically, the obtained human body distance is compared with a preset human body distance value, if the human body distance is smaller than the preset human body distance value, the human body is considered to be approaching, so that the opening of the micro valve is adjusted to be enlarged, the amplitude of the audio of the rear sound outlet hole is increased, the audio leaked from the front sound outlet hole is more counteracted, and the opening of the micro valve is gradually enlarged along with the reduction of the approaching distance of the human body; if the human body distance is judged to be larger than or equal to the preset human body distance value, the human body is considered to be far away, so that the opening of the micro valve is adjusted to be small, the amplitude of the audio of the rear sound outlet hole is reduced, the offset of the audio leaked to the front sound outlet hole is reduced, the opening of the micro valve is gradually reduced along with the increase of the distance far away from the human body, and the quality of the audio transmitted by the front sound outlet hole is guaranteed to the maximum extent.
In one embodiment, inputting the first ultrasonic signal into the ultrasonic processing engine for processing to obtain the human body distance comprises: recording a second point in time at which the ultrasound processing engine controls the earpiece to generate a second ultrasound signal; recording a first point in time at which the first microphone detects the first ultrasonic signal; calculating a time difference between the second time point and the first time point; calculating the human body distance based on the time difference.
And judging the distance between the surrounding characters and the human body of the mobile terminal by calculating the time of the first ultrasonic signal received by the first microphone after the second ultrasonic signal sent by the receiver is reflected by the surrounding characters. The calculation method is simple, does not occupy excessive resources of the mobile terminal, and does not influence the implementation of other functions of the mobile terminal.
In one embodiment, the method further comprises: transmitting the second digital ultrasonic signal generated by the ultrasonic processing engine and a third digital audio signal received from the mobile terminal to the audio codec; decoding the second digital ultrasonic signal and the third digital audio signal in the audio codec respectively to obtain a second analog ultrasonic signal and a third analog audio signal; propagating the second analog ultrasonic signal and the third analog audio signal to the earpiece exterior via the front sound exit hole.
In this embodiment, the ultrasonic signal generated by the ultrasonic processing engine is a digital signal, i.e., a second digital ultrasonic signal, which needs to be converted into an analog signal before being transmitted through the front sound outlet, and therefore, the second digital ultrasonic signal is transmitted to the audio codec for decoding, i.e., signal conversion, and then the second analog ultrasonic signal is transmitted to the outside through the front sound outlet. Similarly, after the remote third digital audio signal received by the mobile terminal is converted into the third analog audio signal through the audio codec, the third analog audio signal is sent to the outside through the front sound outlet, and then the user can receive the audio signal sent by the remote terminal.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (13)
1. A mobile terminal, characterized in that the mobile terminal comprises:
a handset;
the front sound outlet hole is communicated with the earphone;
the rear sound outlet hole is communicated with the receiver through a rear sound outlet channel and is arranged on the back of the mobile terminal;
an audio codec and a sonication engine electrically connected to the earpiece via the audio codec;
and the micro valve is arranged at the rear sound outlet channel, and the opening of the micro valve is adjustable.
2. The mobile terminal of claim 1,
the receiver is fixed in the mobile terminal and is arranged between the front sound outlet hole and the rear sound outlet hole,
the receiver comprises a vibrating diaphragm, a front sound outlet channel is arranged between the vibrating diaphragm and the front sound outlet hole,
the receiver further comprises magnetic steel, and the magnetic steel faces the rear sound outlet channel.
3. The mobile terminal of claim 3,
the rear sound outlet hole is arranged at a position close to the top end of the back surface of the mobile terminal,
the first side of the micro valve faces the magnetic steel, the second side of the micro valve faces the rear sound outlet,
the amplitude of the audio signal output to the rear sound outlet hole by the receiver is adjusted by adjusting the size of the opening of the micro valve.
4. The mobile terminal of claim 1, wherein the mobile terminal further comprises:
a first microphone disposed on a rear surface of the mobile terminal,
wherein the sonication engine is electrically connected to the first microphone via the audio codec.
5. The mobile terminal of claim 1, wherein the mobile terminal further comprises:
and the dustproof net is arranged between the micro valve and the rear sound outlet hole.
6. The mobile terminal of claim 1,
the mobile terminal also includes a second microphone disposed at a top of the mobile terminal.
7. The mobile terminal of claim 4,
the first microphone is disposed at an upper central position on a back side of the mobile terminal.
8. The mobile terminal of claim 1,
the front sound outlet hole is formed in the junction position, the top, the bottom or the front of the top surface and the front of the mobile terminal.
9. A method of controlling an audio signal of a mobile terminal, wherein the mobile terminal is a mobile terminal according to any of claims 1-9, the method comprising:
adjusting the opening of the micro valve;
through adjusting the size of trompil, adjust the earphone and generate treating the amplitude of the second audio signal of via the microvalve door transmission to back sound hole, realize to the earphone generate treat transmit the regulation of the intensity of the first audio signal of preceding sound hole.
10. The method of claim 9, wherein adjusting the opening of the microvalve comprises:
receiving a first ultrasonic signal detected by the first microphone;
inputting the first ultrasonic signal into the ultrasonic processing engine for processing to obtain a human body distance;
and adjusting the opening of the micro valve according to the human body distance and the preset human body distance value.
11. The method of claim 10, wherein adjusting the opening of the microvalve further comprises:
and when the human body distance is smaller than the preset human body distance value, the opening of the micro valve is adjusted to be enlarged.
And when the human body distance is greater than or equal to the preset human body distance value, the opening of the micro valve is adjusted to be smaller.
12. The method of claim 10, wherein inputting the first digital ultrasound signal into the ultrasound processing engine for processing to obtain the body distance comprises:
recording a second point in time at which the ultrasound processing engine controls the earpiece to generate a second ultrasound signal;
recording a first point in time at which the first microphone detects the first ultrasonic signal;
calculating a time difference between the second time point and the first time point;
calculating the human body distance based on the time difference.
13. The method of claim 9, further comprising:
transmitting the second digital ultrasonic signal generated by the ultrasonic processing engine and a third digital audio signal received from the mobile terminal to the audio codec;
decoding the second digital ultrasonic signal and the third digital audio signal in the audio codec respectively to obtain a second analog ultrasonic signal and a third analog audio signal;
propagating the second analog ultrasonic signal and the third analog audio signal to the earpiece exterior via the front sound exit hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920131.4A CN112653780B (en) | 2019-09-26 | 2019-09-26 | Mobile terminal and method of controlling audio signal of mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920131.4A CN112653780B (en) | 2019-09-26 | 2019-09-26 | Mobile terminal and method of controlling audio signal of mobile terminal |
Publications (2)
| Publication Number | Publication Date |
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| CN112653780A true CN112653780A (en) | 2021-04-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113114817A (en) * | 2021-04-15 | 2021-07-13 | 维沃移动通信有限公司 | Electronic device, control method and control device |
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| CN113114817B (en) * | 2021-04-15 | 2023-12-12 | 维沃移动通信有限公司 | Electronic device, control method and control device |
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