CN102831926A - Portable audio frequency player capable of controlling volume and audio frequency output - Google Patents
Portable audio frequency player capable of controlling volume and audio frequency output Download PDFInfo
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- CN102831926A CN102831926A CN2012103261803A CN201210326180A CN102831926A CN 102831926 A CN102831926 A CN 102831926A CN 2012103261803 A CN2012103261803 A CN 2012103261803A CN 201210326180 A CN201210326180 A CN 201210326180A CN 102831926 A CN102831926 A CN 102831926A
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Abstract
The invention discloses a portable audio frequency player capable of controlling volume and audio frequency. The player consists of an upper cover, a battery, a circuit board and a lower cover in sequence from top to bottom; the circuit board is provided with a microprocessor, an audio frequency processing chip, a volume control chip, an audio frequency output socket, a storage unit, a power switch and a charging socket in sequence. The microprocessor decodes an audio frequency file in the storage unit into a digital signal and outputs the digital signal, part of an output audio frequency signal with frequency higher than 2000 Hertz is processed by a built-in program in the audio frequency processing chip and changed into a signal with the frequency lower than 2000 Hertz by a built-in algorithm in the chip. The audio frequency signal is output to the volume control chip from the audio frequency processing chip, the volume control chip controls power output by the audio frequency signal within a specified range. The audio frequency player can effectively help a user to control a sound signal within a reasonable range without damaging hearing of the user.
Description
Technical field
The present invention relates to a kind of player of voice signal output, especially a kind of small-sized, the portable audio player that can control the output of volume audio frequency.
Background technology
In recent years, increasing conceived father and mother begin fetus is carried out prenatal culture.Traditional prenatal culture is the method that adopts environment source of sound sounding, in the room, listens to the pregnant woman with player plays prenatal culture contents such as audio amplifiers.Can owing to fetus in the uterus and the environment source of sound across thick stomach wall and amniotic fluid, fetus does not almost receive voice signal.Occurred special prenatal culture instrument afterwards and solved this problem, but these prenatal culture players all do not have the volume and the audio frequency of sounding are limited.Research shows that the sound that volume is excessive or audio frequency is too high will damage the hearing of fetus.So need handle to the sound of prenatal culture, be controlled at volume and audio frequency in the reasonable range, enable voice can not damage the healthy of fetus and grow.
Equally, along with popularizing of portable audio player, much human owing to volume is not controlled, is listened the excessive music of volume for a long time when listening to the music, cause impaired hearing.
Lack a kind of suitable portable audio player at present, can effectively control the output of volume and audio frequency.
Summary of the invention
The present invention is exactly the deficiency that overcomes prior art, and a kind of novel portable player that can control volume and audio frequency is provided, and can help the user to be controlled at voice signal in the reasonable range effectively, does not damage user's hearing.
In order to address the above problem, the present invention has adopted following technical scheme: a kind of player of portable control audio volume output is made up of loam cake, battery, circuit board, lower cover from top to bottom successively.
Among the present invention, microprocessor, Audio Processing chip, volume control chip, audio frequency output socket, storage unit, power switch, charge port are arranged on the circuit board.
Among the present invention, the needed electric power of circuit board is supplied with by battery, and the power switch of circuit board is controlled by power switch.
Among the present invention; Microprocessor is decoded into digital signal and output to the audio file in the storage unit; The sound signal of output is passed through the program of Audio Processing built-in chip type, and the part that is higher than frequency 2000 hertz is handled, and becomes the signal below 2000 hertz through the built-in chip type algorithm.
Among the present invention, sound signal outputs to the volume control chip from the Audio Processing chip, and the volume control chip can be controlled at the power of audio signal output in the scope of appointment.
Among the present invention, the switch of Audio Processing chip and volume control chip is by the programmed control in the microprocessor.
Advantage of the present invention: 1, the present invention is easy to use, simple to operate.
2, lightweight and portable in volume is easy to carry.
3, applied widely, can use under many circumstances.
4, effectively help the user that voice signal is controlled within the reasonable range, prevent infringement hearing.
5, the control of audio frequency and volume can switch.
Description of drawings
Fig. 1 is the structural representation of the audio player of a kind of portable control volume of patent of the present invention audio frequency output
Specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation: as shown in Figure 1, a kind of audio player of control audio volume output is made up of loam cake (1), battery (4), circuit board (14), lower cover (10) from top to bottom successively.
Display screen (2) and control panel (3) are arranged on the loam cake (1).
Microprocessor (8), Audio Processing chip (5), volume control chip (7), audio frequency output socket (13) are arranged, storage unit (6), power switch (9), charging socket (12), card reader (11) on the circuit board (14).
The needed electric power of circuit board (14) is supplied with by battery (4), and the power switch of circuit board (14) is controlled by power switch (9).When power switch (9) when being in closed condition, audio frequency output socket (13) is not exported any voice signal.
Microprocessor (8) is decoded into digital signal and output to the audio file in the storage unit (6); The sound signal of output is through the built-in program of Audio Processing chip (5); The part that is higher than 2000 hertz to frequency is handled, and becomes the signal below 2000 hertz through the built-in chip type algorithm.
Sound signal outputs to volume control chip (7) from Audio Processing chip (5), and volume control chip (7) can be controlled at the power of audio signal output in the scope of appointment.
Volume control chip (7) is reduced into electric signal to voice signal, exports through audio frequency output socket (13).
The user passes through the button controls playing device on the control panel (3), and through the programmed control Audio Processing chip (5) of microprocessor (8) lining and the switch of volume control chip (7).
When Audio Processing chip (5) is in " unlatching " state, output again after Audio Processing chip (5) will be handled voice signal; When Audio Processing chip (5) is in " closing " state, Audio Processing chip (5) will can not handled voice signal.
When volume control chip (7) is in " unlatching " state, output again after volume control chip (7) will be handled voice signal; When volume control chip (7) is in " closing " state, volume control chip (7) will can not handled voice signal.
Card reader (11) can read the audio file on the storage card of insertion, enlarges the memory space of player.
Charging socket (12) is used for supplying power to battery (4).
The present invention can be used for prenatal culture, and audio frequency output socket (13) can connect loudspeaker, is used for to the fetus prenatal culture.The present invention can effectively be controlled at sound under the volume to fetal well-being, can not damage the hearing of fetus and grow, and lets prenatal culture become safer.
The present invention also can be used for normal music appreciating, and the user can be controlled at voice signal in the reasonable range after opening the software switch of volume control effectively, does not damage user's hearing.
Claims (5)
1. the audio player of portable control audio volume output, it is characterized in that: said player from top to bottom is made up of loam cake (1), battery (4), circuit board (14), lower cover (10) successively; Microprocessor (8), Audio Processing chip (5), volume control chip (7), audio frequency output socket (13) are arranged, storage unit (6), power switch (9), charge port (12), card reader (11) on the circuit board.
2. the audio player of a kind of portable control audio volume output according to claim 1; It is characterized by: microprocessor (8) is decoded into digital signal and output to the audio file in the storage unit (6); The sound signal of output is through the built-in program of Audio Processing chip (5); The part that is higher than 2000 hertz to frequency is handled, and becomes the signal below 2000 hertz through the built-in chip type algorithm.
3. the audio player of a kind of portable control audio volume output according to claim 1; It is characterized by: sound signal outputs to volume control chip (7) from Audio Processing chip (5), and volume control chip (7) can be controlled at the power of audio signal output in the scope of appointment.
4. the audio player of a kind of portable control audio volume output according to claim 1, it is characterized by: the switch of Audio Processing chip (5) and volume control chip (7) is by the built-in programmed control of microprocessor (8).
5. the audio player of a kind of portable control audio volume output according to claim 1 is characterized by: the needed electric power of circuit board (14) is supplied with by battery (4), and the power switch of circuit board (14) is controlled by power switch (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103261803A CN102831926A (en) | 2012-09-06 | 2012-09-06 | Portable audio frequency player capable of controlling volume and audio frequency output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103261803A CN102831926A (en) | 2012-09-06 | 2012-09-06 | Portable audio frequency player capable of controlling volume and audio frequency output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102831926A true CN102831926A (en) | 2012-12-19 |
Family
ID=47335019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103261803A Pending CN102831926A (en) | 2012-09-06 | 2012-09-06 | Portable audio frequency player capable of controlling volume and audio frequency output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102831926A (en) |
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2012
- 2012-09-06 CN CN2012103261803A patent/CN102831926A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121219 |