CN108234727B - Noise reduction method, mobile terminal and computer readable storage medium - Google Patents
Noise reduction method, mobile terminal and computer readable storage medium Download PDFInfo
- Publication number
- CN108234727B CN108234727B CN201711230387.XA CN201711230387A CN108234727B CN 108234727 B CN108234727 B CN 108234727B CN 201711230387 A CN201711230387 A CN 201711230387A CN 108234727 B CN108234727 B CN 108234727B
- Authority
- CN
- China
- Prior art keywords
- noise
- mobile terminal
- value
- capacitor
- compensation wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
Abstract
The invention provides a noise reduction method and a mobile terminal, wherein the method comprises the following steps: in the communication process, determining a noise parameter of noise emitted by a capacitor of the mobile terminal; generating a compensation wave according to the noise parameter, wherein the phase of the compensation wave is opposite to that of noise emitted by a capacitor of the mobile terminal; and outputting the compensation wave to counteract noise emitted by the capacitance of the mobile terminal. On the basis that the electric capacity of mobile terminal sends the noise, send the sound with the anti-phase place of the noise that the electric capacity of mobile terminal sent, can reach the noise that the electric capacity that eliminates mobile terminal sent, promote user's use and experience.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a noise reduction method and a mobile terminal.
Background
A layout space of a PCB (Printed Circuit Board) of a mobile terminal is increasingly strained. Since the multilayer ceramic capacitor has advantages of small package, excellent high frequency characteristics, reliable temperature characteristics, low cost, etc., it is widely used in mobile terminals.
The multilayer ceramic capacitor has the defect that capacitance sound is easy to appear, and the capacitance sound is easier to be perceived by a user along with the appearance design of the mobile terminal is thinner and thinner. Especially, when the mobile terminal is in the 2G mode, the rf power amplifier may pump at 217HZ, thereby causing the main power voltage to fluctuate at 217HZ ripple, and the capacitance on the PCB may also vibrate at 217HZ due to the piezoelectric effect, thereby generating a user perceivable capacitive sound.
Because the noise generated by the capacitor is that the outer electrode of the capacitor drives the printed circuit board to vibrate and sound through the soldering tin, the existing scheme for reducing the sound of the capacitor is that the multilayer ceramic capacitor is directly attached to the soldering tin of the outer electrode of the capacitor in a reduced mode as far as possible, only a thin layer of tin paste is arranged at the joint of the outer electrode of the capacitor and a gasket, and the PCB is connected with the noise reduction capacitor through the gasket. When the capacitor deforms, the part with large deformation quantity is not easy to drag the PCB to vibrate together, so that the deformation quantity of the PCB is reduced, the purpose of reducing capacitor noise is achieved, but the noise reduction method still cannot thoroughly eliminate noise, and the use experience of a user is still influenced.
Disclosure of Invention
The embodiment of the invention provides a noise reduction method and a mobile terminal, and aims to solve the problem that capacitive sound noise reduction is not complete in the prior art.
In order to solve the technical problem, the invention is realized as follows: a method of noise reduction, comprising: in the communication process, determining a noise parameter of noise emitted by a capacitor of the mobile terminal; generating a compensation wave according to the noise parameter, wherein the phase of the compensation wave is opposite to that of noise emitted by a capacitor of the mobile terminal; and outputting the compensation wave to counteract noise emitted by the capacitance of the mobile terminal.
In a first aspect, an embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes: the first determining module is used for determining a noise parameter of noise emitted by a capacitor of the mobile terminal in a call process; the generating module is used for generating a compensation wave according to the noise parameter, wherein the phase of the compensation wave is opposite to that of noise emitted by a capacitor of the mobile terminal; and the output module is used for outputting the compensation wave so as to offset noise emitted by the capacitor of the mobile terminal.
In a second aspect, an embodiment of the present invention provides a mobile terminal, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the noise reduction method.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the noise reduction method.
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the call process; and generating a compensation wave according to the noise parameter, and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal. On the basis that the electric capacity of mobile terminal sends the noise, send the sound with the anti-phase place of the noise that the electric capacity of mobile terminal sent, can reach the noise that the electric capacity that eliminates mobile terminal sent, promote user's use and experience.
Drawings
FIG. 1 is a flow chart illustrating steps of a noise reduction method according to a first embodiment of the present invention;
FIG. 2 is a flow chart illustrating the steps of a noise reduction method according to a second embodiment of the present invention;
FIG. 3 is a flow chart of the steps of a noise reduction method according to a third embodiment of the present invention;
fig. 4 is a block diagram of a mobile terminal according to a fourth embodiment of the present invention;
fig. 5 is a block diagram of a mobile terminal according to a fifth embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware structure of a mobile terminal according to a sixth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a flowchart illustrating steps of a noise reduction method according to a first embodiment of the present invention is shown.
The noise reduction method provided by the embodiment of the invention comprises the following steps:
step 101: and determining a noise parameter of noise emitted by a capacitor of the mobile terminal in the call process.
For 2G mode communication, a large capacitor near a receiver is a main interference source, each capacitor shakes along with the shifting of a main power supply, and noise parameters of noise emitted by the capacitor of the mobile terminal are noise parameters of the large capacitor near the receiver.
Wherein, the noise parameter of the electric capacity of the mobile terminal includes: noise value, noise phase value, noise frequency value, etc. The noise parameters are preset and stored in the mobile terminal, and when the mobile terminal is detected to be in a 2G call, the noise parameters are determined from the corresponding storage position of the mobile terminal.
Step 102: and generating a compensation wave according to the noise parameter.
The compensation wave is a wave with a phase opposite to that of noise emitted by a capacitor of the mobile terminal.
For example: when the noise frequency value is 217Hz, the phase value is 0, and the amplitude is 3, the frequency value of the output compensation wave is 217Hz, the phase value is 180, and the amplitude is 3, so that the noise can be counteracted only if the phase value of the noise emitted by the capacitor of the mobile terminal is opposite to the phase value of the compensation wave, and the noise reduction effect is achieved.
Step 103: and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal.
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the call process; and generating a compensation wave according to the noise parameter, and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal. On the basis that the electric capacity of mobile terminal sends the noise, send the sound with the anti-phase place of the noise that the electric capacity of mobile terminal sent, can reach the noise that the electric capacity that eliminates mobile terminal sent, promote user's use and experience.
Example two
Referring to fig. 2, a flowchart illustrating steps of a noise reduction method according to a second embodiment of the present invention is shown.
The embodiment of the invention realizes the detection and the recording of the noise parameter of the noise emitted by the capacitor of the mobile terminal through the PC, the mobile terminal and the microphone. The PC is connected with the microphone, the mobile terminal is connected with the PC through a Universal Serial Bus (USB), the PC is connected with the microphone, and the microphone receives and detects noise emitted by a capacitor of the mobile terminal.
The noise reduction method provided by the embodiment of the invention comprises the following steps:
step 201: and receiving the noise value, the noise phase value and the noise frequency value of the capacitance noise transmitted by the PC.
The noise value, the noise phase value and the noise frequency value of the capacitance noise are detected by the microphone and are sent to the PC through the microphone.
The radio frequency power amplifier is an important component of the mobile terminal, in a front stage circuit of the mobile terminal, the radio frequency signal power generated by the modulation oscillation circuit is very small, and the radio frequency signal power can be fed to the antenna to be radiated after sufficient radio frequency power is obtained through a series of amplifying-buffer stage, middle amplifying stage and final power amplifying stage, so that the radio frequency power of each mobile terminal has difference. Under the working state of the radio frequency power of the current mobile terminal, the microphone detects the noise value, the noise phase value and the noise frequency value of the noise emitted by the capacitor of the mobile terminal and sends the noise value, the noise phase value and the noise frequency value to the PC.
The vibration of the capacitor of the Mobile terminal is mainly caused by the vibration of the PCB and the vibration of the air gap, and the vibration of the capacitor has a certain energy value through the vibration of the air gap, and a GSM (Global System for Mobile Communication) frame is divided into 8 time slots, each time slot is 0.577us, so that 0.577 × 8 is 4.615ms per frame, and the corresponding frequency is 216.7 HZ. When the radio frequency power amplifier works, a large current is drawn from the battery end once every 4.615ms, so that voltage drop is caused, and voltage jitter is caused periodically. The maximum energy point frequency of the capacitor sounding due to the periodic voltage fluctuations is also 216.7 HZ.
For the current mobile terminal, the noise formula y of the capacitance of the mobile terminal is Asin (ω t + ψ), the air propagation speed is 314m/s, 2 pi/ω is 4.615ms, the initial phase ψ is 0, or ψ is 180; when the wavelength formula λ is u/f, corresponding to 216.7HZ, λ is 314/216.7 ≈ 1.4m, but a general solid object should transmit sound faster, and the wavelength λ is longer. The length r from a common capacitor to an earphone is millimeter-scale, the distance r from the capacitor to the earphone of the mobile terminal can be ignored relative to lambda, the air near the earphone and the air near the capacitor start to vibrate simultaneously, and the vibration of the capacitor of the mobile terminal mainly passes through a PCB.
The time when the rf power amplifier is turned on is also a known condition, and the initial phase of the noise of the capacitor caused by the noise can only be ψ 0 or ψ 180. And detecting a noise value of noise emitted by a capacitor of the mobile terminal through a microphone, wherein the noise phase value is 0 or 180, and the noise frequency value is 216 Hz.
Step 202: and taking the noise value, the noise phase value and the noise frequency value of the noise emitted by the capacitor as noise parameters of the noise emitted by the capacitor.
And the PC sends a noise value, a noise phase value and a noise frequency value corresponding to the noise emitted by the capacitor of the mobile terminal to the mobile terminal, and writes the noise parameter of the noise emitted by the capacitor into the mobile terminal so that the mobile terminal can generate a compensation wave according to the noise parameter after leaving the factory to counteract the noise emitted by the capacitor.
It should be noted that steps 201 to 202 are specific processes of generating a noise parameter corresponding to the capacitor and writing the noise parameter corresponding to the capacitor into the mobile terminal. In the specific implementation process, if the noise parameter of the capacitor generating noise is written in the mobile terminal, the steps 201 to 202 need not to be executed.
Step 203: and determining a noise parameter of noise emitted by a capacitor of the mobile terminal in the call process.
And when the mobile terminal is detected to be in the 2G call, acquiring a noise parameter which is written in advance and is generated by the capacitor of the mobile terminal and generates noise from the corresponding storage position of the mobile terminal.
Wherein the noise parameters include: the capacitance of the mobile terminal emits a noise value, a noise phase value and a noise frequency value corresponding to the noise, or a phase value, a frequency value and an amplitude value corresponding to the compensation wave.
Step 204: an inverse of the noise phase value is determined.
When the noise phase value is 0, determining that the inverted phase value of the noise phase value is 180; when the noise phase value is 180, the inverse phase value of the noise phase value is determined to be 0.
Step 205: and generating a compensation wave according to the noise value, the noise inverse phase value and the noise frequency value.
The generated compensation wave has the same amplitude, the same frequency and the opposite phase of the noise emitted from the capacitor installed in the mobile terminal.
Step 206: and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal.
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is detected in advance and written into the mobile terminal, and the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the conversation process; the method comprises the steps of determining a reverse phase value of noise emitted by a capacitor of the mobile terminal according to a noise parameter, generating a compensation wave, outputting the compensation wave to offset the noise emitted by the capacitor of the mobile terminal, and emitting sound in an anti-phase with the noise emitted by the capacitor of the mobile terminal on the basis of the noise emitted by the capacitor contained in the mobile terminal, so that the purpose of eliminating the noise emitted by the capacitor of the mobile terminal can be achieved.
EXAMPLE III
Referring to fig. 3, a flowchart illustrating steps of a noise reduction method according to a third embodiment of the present invention is shown.
The embodiment of the invention realizes the detection and recording of the noise parameters corresponding to the capacitor of the mobile terminal through the PC, the mobile terminal and the microphone, wherein the mobile terminal is connected with the PC through the USB, the PC is connected with the microphone, and the microphone receives and detects the noise emitted by the capacitor of the mobile terminal.
The noise reduction method provided by the embodiment of the invention comprises the following steps:
step 301: when the capacitor is detected to generate noise, a preset compensation wave is output.
In the operation process of the mobile terminal, noise emitted by a capacitor of the mobile terminal is detected through a microphone and is sent to a PC (personal computer), the PC records the noise value of the noise emitted by the capacitor of the mobile terminal as a first noise value, the PC sends a control command to the mobile terminal to control the mobile terminal to emit a preset compensation wave, and under the condition of emitting the preset compensation wave, a second noise value corresponding to the noise emitted by the current mobile terminal is detected through the microphone and is sent to the PC.
Step 302: and receiving a preset compensation wave adjusting instruction sent by the PC.
The generation mode of the compensation wave adjustment command is preset, and one preferable mode is as follows: the PC receives a second noise value sent by the microphone, judges the magnitude of the first noise value and the second noise value, and when the first noise value is larger than the second noise value, the phase value of the noise sent by the capacitor is opposite to the phase value of the preset compensation wave, and the preset compensation wave adjusting instruction sent by the PC comprises the following instructions: instructions for adjusting the phase value of the predetermined compensation wave and instructions for adjusting the amplitude value of the predetermined compensation wave.
Another preferred way is:
when the PC determines that the first noise value is smaller than the second noise value, indicating that the phase value of the noise emitted by the capacitor is the same as the phase value of the first noise value, the PC sends a preset compensation wave adjustment instruction to the mobile terminal, including: and adjusting the preset compensating wave amplitude value.
Step 303: and adjusting the amplitude value and/or the phase value of the preset compensation wave according to the preset compensation wave adjusting instruction.
The preset compensation wave adjusting instruction is used for adjusting the preset compensation wave so as to offset noise emitted by the capacitor of the mobile terminal.
Specifically, when the preset compensation wave adjustment instruction includes an instruction to adjust a preset compensation wave phase value and an instruction to adjust a preset compensation wave amplitude value, the phase value and the amplitude value of the preset compensation wave are adjusted. For example: when the phase value of the preset compensation wave is 0, the phase value of the preset compensation wave is adjusted to 180 according to the preset compensation wave adjusting instruction. And determining an amplitude value corresponding to the noise emitted by the capacitor, and adjusting the amplitude value of the preset compensation wave to be the same as the amplitude value of the noise emitted by the capacitor.
The mobile terminal outputs the preset compensation wave after phase adjustment according to the preset compensation wave adjusting instruction in a mode of increasing the volume, then a third noise value corresponding to the noise sent by the mobile terminal is detected through a microphone, the third noise value is sent to the PC, the PC compares the third noise value with the preset noise value, and when the third noise value is smaller than the preset noise value, the PC does not send the preset compensation wave adjusting instruction to the mobile terminal.
It should be noted that, a person skilled in the art may set the preset noise value according to an actual situation, where the preset noise value may be set to 1db, 2db, 3db, and the like, and the size of the preset noise value is not specifically limited in the embodiment of the present invention.
And when the preset compensation wave adjusting instruction only comprises an instruction for adjusting the amplitude value of the preset compensation wave, adjusting the amplitude value of the preset compensation wave.
Step 304: and receiving a phase value, a frequency value and an amplitude value corresponding to the adjusted preset compensation wave sent by the PC. .
And when the third noise value is smaller than the preset noise value, the PC determines a phase value, a frequency value and an amplitude value corresponding to the adjusted preset compensation wave and writes the phase value, the frequency value and the amplitude value into the mobile terminal.
Step 305: and taking the phase value, the frequency value and the amplitude value as noise parameters of the noise emitted by the capacitor.
Step 306: and determining a noise parameter of noise emitted by a capacitor of the mobile terminal in the call process.
And when the mobile terminal is detected to be in the 2G call, acquiring the pre-written noise parameter of the capacitor contained in the mobile terminal from the corresponding storage position of the mobile terminal.
Step 307: and generating a compensation wave according to the phase value, the frequency value and the amplitude value.
The compensation wave is generated according to noise parameters, such as: when the frequency value is 217Hz, the phase value is 0, and the amplitude is 3, the frequency value of the output compensation wave is 217Hz, the phase value is 0, and the amplitude is 3. This kind of mode directly generates the compensating wave according to the corresponding parameter of the compensating wave of write-in mobile terminal for it is faster to fall the speed of making an uproar, promotes user's use and experiences.
Step 308: and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal.
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is detected in advance and written into the mobile terminal, and the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the conversation process; the noise reduction method provided by the embodiment of the invention can directly generate the compensation wave according to the written noise parameter of the noise emitted by the capacitor of the mobile terminal, reduce the calculated amount and simultaneously realize noise reduction.
Example four
Referring to fig. 4, a block diagram of a mobile terminal according to a fourth embodiment of the present invention is shown.
The mobile terminal provided by the embodiment of the invention comprises: a first determining module 401, configured to determine a noise parameter of noise emitted by a capacitor of the mobile terminal during a call; a generating module 402, configured to generate a compensation wave according to the noise parameter, where the compensation wave has an opposite phase to noise emitted by a capacitor of the mobile terminal; an output module 403, configured to output the compensation wave to cancel noise emitted by the capacitor of the mobile terminal.
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the call process; and generating a compensation wave according to the noise parameter, and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal. On the basis that the electric capacity of mobile terminal sends the noise, send the sound with the anti-phase place of the noise that mobile terminal sent, can reach the noise that the electric capacity that eliminates mobile terminal sent, promote user's use and experience.
EXAMPLE five
Referring to fig. 5, a block diagram of a mobile terminal according to a fifth embodiment of the present invention is shown.
The mobile terminal provided by the embodiment of the invention comprises a first determining module 501, a second determining module, a third determining module and a fourth determining module, wherein the first determining module is used for determining a noise parameter of noise emitted by a capacitor of the mobile terminal in a call process; a generating module 502, configured to generate a compensation wave according to the noise parameter, where the compensation wave has a phase opposite to a phase of noise emitted by a capacitor of the mobile terminal; an output module 503, configured to output the compensation wave to cancel noise emitted by the capacitor of the mobile terminal.
Preferably, the mobile terminal is connected to a PC, and the PC is connected to a microphone, and the mobile terminal includes: a first receiving module 504, configured to receive a noise value, a noise phase value, and a noise frequency value of capacitive noise sent by the PC before the first determining module 501 determines a noise parameter of noise emitted by a capacitor of the mobile terminal during a call, where the noise value, the noise phase value, and the noise frequency value of the capacitive noise are detected by a microphone and are sent to the PC through the microphone; and a second determining module 505, configured to use the noise value, the noise phase value, and the noise frequency value of the noise emitted by the capacitor as noise parameters of the noise emitted by the capacitor.
Preferably, the generating module 502 comprises: a determination submodule 5021 for determining an inverse phase value of the noise phase value; and the output submodule 5022 is used for generating a compensation wave according to the noise value, the noise inverse phase value and the noise frequency value.
Preferably, the mobile terminal includes: a preset compensation wave output module 506, configured to output a preset compensation wave when a noise parameter generated by a capacitor of the mobile terminal is detected before the first determining module 501 determines the noise parameter generated by the capacitor during a call; a second receiving module 507, configured to receive a preset compensation wave adjustment instruction sent by the PC end; an adjusting module 508, configured to adjust an amplitude value and/or a phase value of the preset compensation wave according to the preset compensation wave adjusting instruction, where the preset compensation wave adjusting instruction is used to adjust the preset compensation wave to cancel noise emitted by the capacitor; a third receiving module 509, configured to receive a phase value, a frequency value, and an amplitude value corresponding to the adjusted preset compensation wave sent by the PC end; a third determining module 510, configured to use the phase value, the frequency value, and the amplitude value as noise parameters of noise emitted by the capacitor.
Preferably, the generating module 502 comprises: the generating submodule 5023 is used for generating a compensation wave according to the phase value, the frequency value and the amplitude value.
The mobile terminal provided in the embodiment of the present invention can implement each process implemented by the mobile terminal in the method embodiments of fig. 1 to fig. 3, and is not described herein again to avoid repetition.
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is detected in advance and written into the mobile terminal, and the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the conversation process; the noise reduction method provided by the embodiment of the invention can directly generate the compensation wave according to the written noise parameter of the noise emitted by the capacitor of the mobile terminal, reduce the calculated amount and simultaneously realize the noise reduction effect.
EXAMPLE six
Figure 6 is a schematic diagram of a hardware configuration of a mobile terminal implementing various embodiments of the present invention,
the mobile terminal 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 6 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
A processor 610, configured to determine a noise parameter of noise emitted by a capacitor of the mobile terminal during a call; generating a compensation wave according to the noise parameter, wherein the phase of the compensation wave is opposite to that of noise emitted by a capacitor of the mobile terminal; and outputting the compensation wave to counteract noise emitted by the capacitance of the mobile terminal. (ii) a
In the embodiment of the invention, the noise parameter of the noise emitted by the capacitor of the mobile terminal is determined in the call process; and generating a compensation wave according to the noise parameter, and outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal. On the basis that the electric capacity of mobile terminal sends the noise, send the sound with the anti-phase place of the noise that the electric capacity of mobile terminal sent, can reach the noise that the electric capacity that eliminates mobile terminal sent, promote user's use and experience.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 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. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.
The mobile terminal provides the user with wireless broadband internet access through the network module 602, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 may also provide audio output related to a specific function performed by the mobile terminal 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.
The mobile terminal 600 also includes at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or the backlight when the mobile terminal 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although the touch panel 6071 and the display panel 6061 are shown in fig. 6 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 608 is an interface through which an external device is connected to the mobile terminal 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 600 or may be used to transmit data between the mobile terminal 600 and external devices.
The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 610 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 609 and calling data stored in the memory 609, thereby integrally monitoring the mobile terminal. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.
The mobile terminal 600 may further include a power supply 611 (e.g., a battery) for supplying power to the various components, and preferably, the power supply 611 is logically connected to the processor 610 via a power management system, so that functions of managing charging, discharging, and power consumption are performed via the power management system.
In addition, the mobile terminal 600 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides a mobile terminal, which includes a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program is executed by the processor 610 to implement each process of the above noise reduction method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above noise reduction method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A noise reduction method is applied to a mobile terminal, and is characterized by comprising the following steps:
in the communication process, determining a noise parameter of noise emitted by a capacitor of the mobile terminal;
generating a compensation wave according to the noise parameter, wherein the phase of the compensation wave is opposite to that of noise emitted by a capacitor of the mobile terminal;
outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal;
wherein, the mobile terminal is connected with a PC, the PC is connected with a microphone, and before the step of determining the noise parameter of the noise emitted by the capacitor of the mobile terminal in the conversation process, the method further comprises the following steps:
receiving a noise value, a noise phase value and a noise frequency value of the capacitive noise sent by the PC, wherein the noise value, the noise phase value and the noise frequency value of the capacitive noise are detected by a microphone and are sent to the PC through the microphone;
taking the noise value, the noise phase value and the noise frequency value of the noise emitted by the capacitor as noise parameters of the noise emitted by the capacitor;
the step of generating a compensation wave in dependence on the noise parameter comprises:
determining an inverse phase value of the noise phase value;
and generating a compensation wave according to the noise value, the noise inverse phase value and the noise frequency value.
2. The method of claim 1, wherein prior to the step of determining a noise parameter of the noise emitted by the capacitor of the mobile terminal during the call, the method further comprises:
when the capacitor is detected to generate noise, outputting a preset compensation wave;
receiving a preset compensation wave adjusting instruction sent by a PC;
adjusting the amplitude value and/or the phase value of the preset compensation wave according to the preset compensation wave adjusting instruction, wherein the preset compensation wave adjusting instruction is used for adjusting the preset compensation wave so as to offset noise emitted by the capacitor of the mobile terminal;
receiving a phase value, a frequency value and an amplitude value corresponding to the adjusted preset compensation wave sent by the PC;
and taking the phase value, the frequency value and the amplitude value as noise parameters of noise emitted by the capacitor.
3. The method of claim 2, wherein the step of generating a compensation wave in accordance with the noise parameter comprises:
and generating a compensation wave according to the phase value, the frequency value and the amplitude value.
4. A mobile terminal, characterized in that the mobile terminal comprises:
the first determining module is used for determining a noise parameter of noise emitted by a capacitor of the mobile terminal in a call process;
the generating module is used for generating a compensation wave according to the noise parameter, wherein the phase of the compensation wave is opposite to that of noise emitted by a capacitor of the mobile terminal;
the output module is used for outputting the compensation wave to offset noise emitted by the capacitor of the mobile terminal;
wherein, mobile terminal is connected with the PC, PC and microphone are connected, mobile terminal includes:
the first receiving module is used for receiving a noise value, a noise phase value and a noise frequency value of capacitive noise sent by the PC before the first determining module determines a noise parameter of noise sent by a capacitor of the mobile terminal in a call process, wherein the noise value, the noise phase value and the noise frequency value of the capacitive noise are detected by a microphone and are sent to the PC by the microphone;
the second determining module is used for taking the noise value, the noise phase value and the noise frequency value of the noise emitted by the capacitor as the noise parameter of the noise emitted by the capacitor;
the generation module comprises:
a determination submodule for determining an inverted phase value of the noise phase value;
and the output submodule is used for generating a compensation wave according to the noise value, the noise inverse phase value and the noise frequency value.
5. The mobile terminal according to claim 4, wherein the mobile terminal comprises:
the preset compensation wave output module is used for outputting preset compensation waves when the noise emitted by the capacitor is detected before the noise parameter emitted by the capacitor of the mobile terminal is determined by the first determination module in the call process;
the second receiving module is used for receiving a preset compensating wave adjusting instruction sent by the PC terminal;
the adjusting module is used for adjusting the amplitude value and/or the phase value of the preset compensating wave according to the preset compensating wave adjusting instruction, wherein the preset compensating wave adjusting instruction is used for adjusting the preset compensating wave so as to offset noise emitted by the capacitor of the mobile terminal;
the third receiving module is used for receiving a phase value, a frequency value and an amplitude value corresponding to the adjusted preset compensation wave sent by the PC terminal;
and the third determining module is used for taking the phase value, the frequency value and the amplitude value as noise parameters of noise emitted by the capacitor.
6. The mobile terminal of claim 5, wherein the generating module comprises:
and the generation submodule is used for generating compensation waves according to the phase values, the frequency values and the amplitude values.
7. A mobile terminal, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the noise reduction method according to any of claims 1 to 3.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the noise reduction method according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230387.XA CN108234727B (en) | 2017-11-29 | 2017-11-29 | Noise reduction method, mobile terminal and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230387.XA CN108234727B (en) | 2017-11-29 | 2017-11-29 | Noise reduction method, mobile terminal and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108234727A CN108234727A (en) | 2018-06-29 |
| CN108234727B true CN108234727B (en) | 2020-04-10 |
Family
ID=62653670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711230387.XA Active CN108234727B (en) | 2017-11-29 | 2017-11-29 | Noise reduction method, mobile terminal and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108234727B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147754A (en) * | 2018-08-01 | 2019-01-04 | Oppo广东移动通信有限公司 | A kind of audio generation method, terminal and computer storage medium |
| CN110896420B (en) * | 2018-09-12 | 2022-06-21 | 中兴通讯股份有限公司 | Current sound eliminating method and device and storage medium |
| CN109346066B (en) * | 2018-09-26 | 2021-04-16 | 珠海格力电器股份有限公司 | Voice noise reduction method and device |
| CN109218504B (en) * | 2018-09-30 | 2021-03-30 | 维沃移动通信有限公司 | Sound output method and terminal equipment |
| CN113012675B (en) * | 2019-12-19 | 2024-02-13 | 深圳富泰宏精密工业有限公司 | Active noise reduction system and method and electronic device |
| CN111142639A (en) * | 2019-12-19 | 2020-05-12 | 联想(北京)有限公司 | Control method and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070027219A (en) * | 2005-09-06 | 2007-03-09 | 엘지전자 주식회사 | Method for eliminating codec initialization noise in mobile phone and mobile phone thereof |
| CN201887821U (en) * | 2010-10-28 | 2011-06-29 | 广东欧珀移动通信有限公司 | PCB (printed circuit board) wiring circuit for restraining TDD (time division duplex) noise of cell phone |
| CN204270880U (en) * | 2014-12-31 | 2015-04-15 | 深圳市瑞康电子有限公司 | A kind of highly inhibited multilayer ceramic capacitor |
| CN105489212A (en) * | 2014-09-17 | 2016-04-13 | 中兴通讯股份有限公司 | Downlink active noise reduction device and method, and mobile terminal |
| CN105761726A (en) * | 2014-12-15 | 2016-07-13 | 华为终端（东莞）有限公司 | Method and device for eliminating TDD noise |
| CN107404807A (en) * | 2016-05-19 | 2017-11-28 | 中兴通讯股份有限公司 | Device for improving sounding of capacitor and terminal with device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167066A (en) * | 2011-12-16 | 2013-06-19 | 富泰华工业（深圳）有限公司 | Cellphone and noise detection method thereof |
| JP6237978B2 (en) * | 2013-03-13 | 2017-11-29 | オムロン株式会社 | Capacitive sensor, acoustic sensor and microphone |
| CN106791500A (en) * | 2016-12-28 | 2017-05-31 | 格科微电子（上海）有限公司 | The noise-cancellation circuit of imageing sensor |
-
2017
- 2017-11-29 CN CN201711230387.XA patent/CN108234727B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070027219A (en) * | 2005-09-06 | 2007-03-09 | 엘지전자 주식회사 | Method for eliminating codec initialization noise in mobile phone and mobile phone thereof |
| CN201887821U (en) * | 2010-10-28 | 2011-06-29 | 广东欧珀移动通信有限公司 | PCB (printed circuit board) wiring circuit for restraining TDD (time division duplex) noise of cell phone |
| CN105489212A (en) * | 2014-09-17 | 2016-04-13 | 中兴通讯股份有限公司 | Downlink active noise reduction device and method, and mobile terminal |
| CN105761726A (en) * | 2014-12-15 | 2016-07-13 | 华为终端（东莞）有限公司 | Method and device for eliminating TDD noise |
| CN204270880U (en) * | 2014-12-31 | 2015-04-15 | 深圳市瑞康电子有限公司 | A kind of highly inhibited multilayer ceramic capacitor |
| CN107404807A (en) * | 2016-05-19 | 2017-11-28 | 中兴通讯股份有限公司 | Device for improving sounding of capacitor and terminal with device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108234727A (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108234727B (en) | Noise reduction method, mobile terminal and computer readable storage medium | |
| CN108347759B (en) | Anti-interference method of flexible screen and mobile terminal | |
| CN111092621B (en) | Radio frequency circuit, control method and electronic equipment | |
| CN110266323B (en) | Signal control circuit, terminal equipment and signal control method | |
| CN110855313B (en) | Signal control method and electronic equipment | |
| US20230254395A1 (en) | Electronic Device and Control Method Thereof | |
| CN110933494A (en) | Picture sharing method and electronic equipment | |
| US20220408190A1 (en) | Audio playing apparatus, audio playing method, and electronic device | |
| CN111443815A (en) | Vibration reminding method and electronic equipment | |
| CN111614329B (en) | Power amplifier, electronic equipment, voltage control method and device | |
| CN109451146B (en) | Vibration processing method and terminal | |
| CN111061446A (en) | Display method and electronic equipment | |
| CN113055100B (en) | Wi-Fi signal transmission power calibration system, method and device | |
| CN110677770B (en) | Sound production control method, electronic device, and medium | |
| CN112261203A (en) | Electronic equipment and control method and control device thereof | |
| CN108924319B (en) | Proximity detection method and mobile terminal | |
| CN108418961B (en) | Audio playing method and mobile terminal | |
| CN110990029A (en) | Application processing method and electronic equipment | |
| CN110851219A (en) | Information processing method and electronic equipment | |
| CN110839108A (en) | Noise reduction method and electronic equipment | |
| CN109889640B (en) | Screen sounding device and method and mobile terminal | |
| CN111625129B (en) | Screen control method and device, electronic equipment and readable storage medium | |
| CN109412986B (en) | Communication channel setting method and mobile terminal | |
| CN109475034B (en) | Laser lamp control method and device and mobile terminal | |
| CN110489037B (en) | Screen capturing method and mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |