CN106303775B - Mobile terminal and mobile terminal pickup optimization method - Google Patents
Mobile terminal and mobile terminal pickup optimization method Download PDFInfo
- Publication number
- CN106303775B CN106303775B CN201510363395.6A CN201510363395A CN106303775B CN 106303775 B CN106303775 B CN 106303775B CN 201510363395 A CN201510363395 A CN 201510363395A CN 106303775 B CN106303775 B CN 106303775B
- Authority
- CN
- China
- Prior art keywords
- microphone
- mobile terminal
- analog
- signal value
- sound
- 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
Abstract
The embodiment of the disclosure provides a mobile terminal and a mobile terminal pickup optimization method, wherein the mobile terminal comprises a pickup device, the pickup device comprises a microphone and an analog-to-digital converter connected with the microphone, the working voltage of the microphone is higher than a specified value, and the mapping relation between an analog signal and a digital signal in the analog-to-digital converter is set according to the working voltage of the microphone. The microphone and the analog-digital converter of the mobile terminal sound pick-up device are no longer relatively independent, but are designed and manufactured as a whole. The improvement of the working voltage of the microphone enables the maximum bearable sound pressure level of the sound pickup device to be improved, which means that the mobile terminal can record larger sound; the improvement of the working voltage of the microphone can also improve the signal-to-noise ratio of the sound pickup device, which means that the mobile terminal can record smaller sound. Therefore, the sound pickup performance of the mobile terminal is greatly improved, and the sound which cannot be captured before can be captured.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a mobile terminal and a mobile terminal pickup optimization method.
background
A Sound pickup apparatus of a mobile terminal generally involves two parameters, namely, a maximum Signal-to-Noise Ratio (max SNR) and a maximum tolerable Sound Pressure Level (max SPL), and the Sound pickup apparatus can be made only by ensuring the two parameters. The microphone in the sound pickup device can bear a large sound pressure level and can provide a large signal-to-noise ratio, an ADC (Analog-to-Digital Converter) chip for receiving the microphone is matched with the microphone, and an Analog signal output by the microphone is converted into a Digital signal without loss or with minimum loss.
Disclosure of Invention
to overcome the problems in the related art, the present disclosure provides a mobile terminal and a mobile terminal sound pickup optimization method to improve sound pickup performance of the mobile terminal.
according to a first aspect of the embodiments of the present disclosure, a mobile terminal is provided, where the mobile terminal includes a sound pickup apparatus, the sound pickup apparatus includes a microphone and an analog-to-digital converter connected to the microphone, an operating voltage of the microphone is higher than a specified value, and a mapping relationship between an analog signal and a digital signal in the analog-to-digital converter is set according to the operating voltage of the microphone.
Optionally, the specified value is 1.8V.
Optionally, the operating voltage of the microphone is 2V.
Optionally, the mobile terminal is a mobile phone or a tablet computer.
According to a second aspect of the embodiments of the present disclosure, there is provided a mobile terminal sound pickup optimization method, where the mobile terminal includes a sound pickup apparatus, the sound pickup apparatus includes a microphone and an analog-to-digital converter connected to the microphone, and the method includes:
Increasing the operating voltage of the microphone above a specified value;
and setting the mapping relation between the analog signal and the digital signal in the analog-to-digital converter according to the working voltage of the microphone.
Optionally, the specified value is 1.8V.
Optionally, the operating voltage of the microphone is 2V.
Optionally, the mobile terminal is a mobile phone or a tablet computer.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
In the embodiment of the present disclosure, the microphone and the analog-to-digital converter of the mobile terminal sound pickup apparatus are no longer relatively independent, but are designed and manufactured as a whole. The working voltage of the microphone is increased to be higher than a specified value, and in order to adapt to the increase of the working voltage of the microphone, the mapping relation between the analog signal and the digital signal in the analog-to-digital converter is not changed any more, but is set according to the working voltage of the microphone. The improvement of the working voltage of the microphone enables the maximum bearable sound pressure level of the sound pickup device to be improved, which means that the mobile terminal can record larger sound; the improvement of the working voltage of the microphone can also improve the signal-to-noise ratio of the sound pickup device, which means that the mobile terminal can record smaller sound. Therefore, the sound pickup performance of the mobile terminal is greatly improved, and the sound which cannot be captured before can be captured.
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 diagram illustrating a mobile terminal in accordance with an exemplary embodiment;
Fig. 2 is a circuit diagram showing a sound pickup apparatus according to an exemplary embodiment;
Fig. 3 is a flow chart illustrating a method for mobile terminal pickup optimization in accordance with an exemplary embodiment;
fig. 4 is a block diagram illustrating an apparatus for picking up sound according to an example embodiment.
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 certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a diagram illustrating a mobile terminal according to an exemplary embodiment.
Referring to fig. 1, the mobile terminal 100 includes a sound pickup apparatus 101, where the sound pickup apparatus 101 includes a microphone 102 and an analog-to-digital converter 103 connected to the microphone, an operating voltage of the microphone 102 is higher than a specified value, and a mapping relationship between an analog signal and a digital signal in the analog-to-digital converter 103 is set according to the operating voltage of the microphone 102.
In this or other alternative embodiments of the present disclosure, the specified value may be 1.8V.
In this embodiment or other alternative embodiments of the present disclosure, the operating voltage of the microphone may be 2V.
in this embodiment or other optional embodiments of the present disclosure, the mobile terminal may be a mobile phone or a tablet computer.
The microphone may comprise two parts, one part being a diaphragm and the other part being an operational amplifier (i.e. an operational amplifier). As an example, as shown in fig. 2, the microphone is connected to a codec circuit (codec IC), the microphone may include a diaphragm and an operational amplifier, the codec circuit may include an ADC and a DSP, and the diaphragm has an operating voltage VDD1the working voltage of ADC is VDD2，VDD1And VDD2The specific value of (b) may be set according to circumstances.
In the related art, a manufacturer providing a microphone and a manufacturer providing an ADC are not generally the same, and in order to enable the two parts to be combined and operate normally, the operating voltage of the microphone is generally set to 1.8V, that is, the operating voltage of the operational amplifier is 1.8V. In the disclosed embodiment, the operating voltage is increased, for example, from 1.8V to 2V. The main advantages of improving the working voltage of the microphone are that: the microphone can bear larger input signals without causing signal clipping, so that a space is provided for increasing the sensitivity of the vibrating diaphragm, namely a space is increased for increasing the maximum SNR of the microphone; the microphone can be made to withstand a larger input signal, which means that the maximum sound pressure level that the microphone can withstand becomes larger. Clipping means that: if the signal level is too high and exceeds the allowable range (threshold) of the circuit, the signal cannot pass through smoothly, and the waveform is partially clipped, resulting in clipping.
The ADC is used for converting an analog signal transmitted by the microphone into a digital signal, and the maximum value of the digital signal is 0 dBFS. As an example, in the related art, the default mapping relationship for converting the analog signal into the digital signal may be: as shown in table 1, 0dBV (i.e., 1V) — 0dBFS, -1 dBV-1 dBFS …, with clipping being the result if the signal exceeds 1 dBV.
TABLE 1
| Simulation of | Number of | |
| 0dBV | -------→ | 0dBFS |
| -1dBV | -------→ | -1dBFS |
| -2dBV | -------→ | -2dBFS |
| -3dBV | -------→ | -3dBFS |
| -4dBV | -------→ | -4dBFS |
| -5dBV | -------→ | -5dBFS |
In this embodiment, since the operating voltage of the microphone is increased, the analog-to-digital mapping relationship also needs to be adjusted accordingly, for example, it may become 6dBV (i.e. 2V) ═ 0dBFS, and 5dBV ═ 1dBFS …, as shown in table 2:
TABLE 2
| Simulation of | number of | |
| 6dBV | -------→ | 0dBFS |
| 5dBV | -------→ | -1dBFS |
| 4dBV | -------→ | -2dBFS |
| 3dBV | -------→ | -3dBFS |
| 2dBV | -------→ | -4dBFS |
| 1dBV | -------→ | -5dBFS |
By this embodiment, the microphone and the analog-to-digital converter of the mobile terminal sound pickup device are no longer relatively independent, but are designed and manufactured as a whole. The working voltage of the microphone is increased to be higher than a specified value, and in order to adapt to the increase of the working voltage of the microphone, the mapping relation between the analog signal and the digital signal in the analog-to-digital converter is not changed any more, but is set according to the working voltage of the microphone. The improvement of the working voltage of the microphone enables the maximum bearable sound pressure level of the sound pickup device to be improved, which means that the mobile terminal can record larger sound; the improvement of the working voltage of the microphone can also improve the signal-to-noise ratio of the sound pickup device, which means that the mobile terminal can record smaller sound. Therefore, the sound pickup performance of the mobile terminal is greatly improved, and the sound which cannot be captured before can be captured.
Fig. 3 is a flow chart illustrating a mobile terminal pickup optimization method according to an exemplary embodiment. The mobile terminal comprises a sound pickup device, wherein the sound pickup device comprises a microphone and an analog-to-digital converter connected with the microphone, and the method comprises the following steps:
in step S301, the operating voltage of the microphone is increased to a predetermined value or more.
In step S302, a mapping relationship between the analog signal and the digital signal in the analog-to-digital converter is set according to the working voltage of the microphone.
In this or other alternative embodiments of the present disclosure, the specified value is 1.8V.
In this embodiment or other optional embodiments of the present disclosure, the operating voltage of the microphone is 2V.
In this embodiment or other optional embodiments of the present disclosure, the mobile terminal may be a mobile phone or a tablet computer.
Fig. 4 is a block diagram illustrating an apparatus for picking up sound according to an example embodiment. For example, the apparatus 2800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and so forth.
Referring to fig. 4, apparatus 2800 may include one or more of the following components: processing component 2802, memory 2804, power component 2806, multimedia component 2808, audio component 2810, interface for input/output (I/O) 2812, sensor component 2814, and communications component 2816.
The processing component 2802 generally controls overall operation of the apparatus 2800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 2802 may include one or more processors 2820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 2802 can include one or more modules that facilitate interaction between the processing component 2802 and other components. For example, the processing component 2802 can include a multimedia module to facilitate interaction between the multimedia component 2808 and the processing component 2802.
The memory 2804 is configured to store various types of data to support operation at the device 2800. Examples of such data include instructions for any application or method operating on device 2800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 2804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
power supply components 2806 provide power to the various components of device 2800. The power components 2806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 2800.
The multimedia component 2808 includes a screen that provides an output interface between the device 2800 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 2808 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the back-facing camera may receive external multimedia data when the device 2800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
the audio component 2810 is configured to output and/or input audio signals. For example, audio component 2810 includes a Microphone (MIC) configured to receive external audio signals when apparatus 2800 is in operating modes, such as a call mode, a record mode, and a voice recognition mode. The received audio signals may further be stored in memory 2804 or transmitted via communications component 2816. In some embodiments, the audio component 2810 also includes a speaker for outputting audio signals.
I/O interface 2812 provides an interface between processing component 2802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
sensor assembly 2814 includes one or more sensors for providing various aspects of state assessment for apparatus 2800. For example, sensor assembly 2814 may detect an open/closed state of device 2800, the relative positioning of components, such as a display and keypad of apparatus 2800, sensor assembly 2814 may also detect a change in position of apparatus 2800 or a component of apparatus 2800, the presence or absence of user contact with apparatus 2800, orientation or acceleration/deceleration of apparatus 2800, and a change in temperature of apparatus 2800. Sensor assembly 2814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 2814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 2814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 2816 is configured to facilitate communications between the apparatus 2800 and other devices in a wired or wireless manner. The apparatus 2800 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 2816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communications component 2816 also includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 2800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods at the terminal side.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as memory 2804 comprising instructions, executable by processor 2820 of apparatus 2800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
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 (4)
1. A mobile terminal is characterized in that the mobile terminal comprises a sound pickup device, the sound pickup device comprises a microphone and an analog-digital converter connected with the microphone, the working voltage of the microphone is higher than a specified value, and the mapping relation between an analog signal and a digital signal in the analog-digital converter is set according to the working voltage of the microphone;
The specified value is 1.8V;
The working voltage of the microphone is 2V;
the relation between the analog signal and the digital signal in the analog-to-digital converter is as follows:
The analog signal value of 6dBV corresponds to the digital signal value of 0 dBFS; the analog signal value of 5dBV corresponds to the digital signal value of-1 dBFS; the analog signal value of 4dBV corresponds to the digital signal value of-2 dBFS; the analog signal value of 3dBV corresponds to the digital signal value of-3 dBFS; the analog signal value of 2dBV corresponds to the digital signal value of-4 dBFS; the analog signal value of 1dBV corresponds to the digital signal value of-5 dBFS.
2. the mobile terminal according to claim 1, wherein the mobile terminal is a mobile phone or a tablet computer.
3. A mobile terminal pickup optimization method is characterized in that the mobile terminal comprises a pickup device, the pickup device comprises a microphone and an analog-digital converter connected with the microphone, and the method comprises the following steps:
increasing the operating voltage of the microphone above a specified value;
Setting a mapping relation between an analog signal and a digital signal in the analog-to-digital converter according to the working voltage of the microphone;
The specified value is 1.8V;
The working voltage of the microphone is 2V;
the relation between the analog signal and the digital signal in the analog-to-digital converter is as follows:
The analog signal value of 6dBV corresponds to the digital signal value of 0 dBFS; the analog signal value of 5dBV corresponds to the digital signal value of-1 dBFS; the analog signal value of 4dBV corresponds to the digital signal value of-2 dBFS; the analog signal value of 3dBV corresponds to the digital signal value of-3 dBFS; the analog signal value of 2dBV corresponds to the digital signal value of-4 dBFS; the analog signal value of 1dBV corresponds to the digital signal value of-5 dBFS.
4. The method according to claim 3, wherein the mobile terminal is a mobile phone or a tablet computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510363395.6A CN106303775B (en) | 2015-06-26 | 2015-06-26 | Mobile terminal and mobile terminal pickup optimization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510363395.6A CN106303775B (en) | 2015-06-26 | 2015-06-26 | Mobile terminal and mobile terminal pickup optimization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106303775A CN106303775A (en) | 2017-01-04 |
| CN106303775B true CN106303775B (en) | 2019-12-13 |
Family
ID=57651038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510363395.6A Active CN106303775B (en) | 2015-06-26 | 2015-06-26 | Mobile terminal and mobile terminal pickup optimization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106303775B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695113A (en) * | 2011-03-11 | 2012-09-26 | 快捷半导体(苏州)有限公司 | Temperature compensation system and temperature compensation method |
| CN103125071A (en) * | 2010-08-18 | 2013-05-29 | 美国亚德诺半导体公司 | Charge sharing analog computation circuitry and applications |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120034763A (en) * | 2009-06-29 | 2012-04-12 | 노키아 코포레이션 | Temperature compensated microphone |
-
2015
- 2015-06-26 CN CN201510363395.6A patent/CN106303775B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103125071A (en) * | 2010-08-18 | 2013-05-29 | 美国亚德诺半导体公司 | Charge sharing analog computation circuitry and applications |
| CN102695113A (en) * | 2011-03-11 | 2012-09-26 | 快捷半导体(苏州)有限公司 | Temperature compensation system and temperature compensation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106303775A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3163748B1 (en) | Method, device and terminal for adjusting volume | |
| US11469962B2 (en) | Method and apparatus for configuring information of indicating time-frequency position of SSB, and method and apparatus for determining time-frequency position of SSB | |
| CN110796988B (en) | Backlight adjusting method and device | |
| CN107493500B (en) | Multimedia resource playing method and device | |
| US10191717B2 (en) | Method and apparatus for triggering execution of operation instruction | |
| CN107360326B (en) | Terminal volume adjustment processing method and volume adjustment terminal | |
| US11457437B2 (en) | Method and apparatus for configuring information, base station and user equipment | |
| CN108845787B (en) | Audio adjusting method, device, terminal and storage medium | |
| CN108076199B (en) | Method and device for detecting air tightness of microphone | |
| CN107635074B (en) | Method, apparatus and computer-readable storage medium for controlling alarm | |
| CN108806714B (en) | Method and device for adjusting volume | |
| CN108200279B (en) | Backlight adjusting method, device and equipment | |
| CN111417053B (en) | Sound pickup volume control method, sound pickup volume control device and storage medium | |
| CN110392334B (en) | Microphone array audio signal self-adaptive processing method, device and medium | |
| CN109215615B (en) | Display unit working parameter compensation method and device | |
| CN109085562B (en) | Laser sensor, background noise compensation method and electronic equipment | |
| CN108446094B (en) | Audio acquisition circuit, terminal equipment, audio acquisition method and device | |
| CN108600503B (en) | Voice call control method and device | |
| CN109194808B (en) | Volume adjusting method and device | |
| CN109922203B (en) | Terminal, screen off method and device | |
| CN107885464B (en) | Data storage method, device and computer readable storage medium | |
| CN106303775B (en) | Mobile terminal and mobile terminal pickup optimization method | |
| CN111294685B (en) | Method, device, terminal and storage medium for reducing earphone insertion noise | |
| CN111506234B (en) | Method and device for preventing false touch of edge of touch screen, storage medium and electronic equipment | |
| CN113727248A (en) | Method, device and medium for playing audio by loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |