CN1808600A - MP3 player and its acoustic pressure level adjusting method - Google Patents
MP3 player and its acoustic pressure level adjusting method Download PDFInfo
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- CN1808600A CN1808600A CNA2005100326952A CN200510032695A CN1808600A CN 1808600 A CN1808600 A CN 1808600A CN A2005100326952 A CNA2005100326952 A CN A2005100326952A CN 200510032695 A CN200510032695 A CN 200510032695A CN 1808600 A CN1808600 A CN 1808600A
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Abstract
The disclosed MP3 player to receive and display external signal is characteristic in: when recording, the regulating device for input sound pressure level is controlled by a control device to automatic compare the said external signal with the prepared sound pressure level in memory or the preset standard value under user operation; if the external signal is some weak, it takes amplification treatment to the sound source and stores in memory; then, displays the stored data.
Description
Technical field
The invention relates to the MP3 player.Specifically, can receive multiple source of sound from the outside exactly, and convert thereof into the form of mp3 file, when recording, sound pressure level (Level) be set according to user's wish.Perhaps automatically the size of acoustic pressure is regulated according to specific sound pressure level, thus the MP3 player and the sound pressure level control method thereof that can bring convenience for the user.
Background technology
MPEG (the Moving Picture Experts Group) specification that to be the brainstrust of being engaged in dynamic image and this area research of multimedia formulated under the leader of similar the International Organization for Stand (ISO) and international electrical equipment standards meetings international standard mechanisms such as (IEC), provide vision signal or sound signal are compressed, and transmit, or to its technology of reducing.
Simultaneously, MP3 is the meaning of MPEG-1 Audio Layer-3, and it is a kind of in the audio-frequency unit of MPEG technology, and it is a utilization mpeg audio compress technique, thereby the audio sound information of CD can be reduced to 1/12.
As mentioned above, the science and technology and the development of digital audio-frequency data treatment technology are feasible except traditional sound store means of magnetic tape cassette audiotape and so on, and the exploitation of the digital audio-frequency player that the memory storage that can also store voice data (being audio sound information) and MP3 player etc. are carried also becomes possibility.
Fig. 1 is the oblique view of the external structure of the existing MP3 player 100 of expression, and Fig. 2 is the functional module figure of expression MP3 player shown in Figure 1.
As shown in Figures 1 and 2, existing MP3 player 100 is by constituting with the lower part: storer 110, instruction inputting device 115, display device 120, power supplier 125, control device 130, scrambler 155, demoder 135, D/A conversion equipment 140, audio output device 145, earphone jack 150.
Here, under the control of control device 130, the voice data (for example: song, language learning data, music etc.) that is stored in the storer 110 can be play by earphone jack 150.
In addition, instruction inputting device 115 comprises following button.Be that the user is used to determine the voice data that whether will be stored on the storer 110 to play, and broadcast button of the information such as demonstration form of player method, display device 120, menu button, pause button, song selector button etc.Certainly, even it can comprise that also the user has imported instruction, reservation (HOLD) switch that does not also allow MP3 player 100 work.
In addition, display device 120 is that the voice data information in the identifying information in the storer 110, the broadcast (for example: the playing sequence information of bent name, reproduction time, relevant song, control information etc.) and the information such as duty of MP3 player 100 are carried out device shown.The information that shows by display device 120 be by this MP3 player 100 comprise function and determine.In the function information that this MP3 player 100 can move, be necessary that all information of circulating a notice of to the user all show by display device 120.
In addition, power supplier 125 is to provide the device of power supply for MP3 player 100 is worked normally to it.
Power supplier 125 can be such as portable supply units such as rechargeable battery, dry cells, perhaps also can be the power supply adaptor coupling arrangement that connects the external power source feedway.
In addition, control device 130 is to export by earphone jack for the voice data that will be stored in the storer 110, the user operates by 115 pairs of systems of instruction inputting device, thereby to instruction inputting device 115, display device 120, power supplier 125, scrambler 155, demoder 135 is controlled.
In addition, scrambler 155 is under the control of control device 130, receives the external analog signal from devices such as CD, magnetic tape cassette or sound sound pick-up outfits, then its conversion of signals is become the mp3 file form, and stores in the storer 110.
In addition, demoder 135 reads the mp3 file information that is stored in the storer 110 under the control of control device 130, and its decode (decoding) handled, and generates the digital audio data.
In addition, D/A conversion equipment 140 is that the digital audio data-switching that will generate by demoder 135 becomes simulating signal, generates the device of audio frequency simulation data then.
In addition, audio output device 145 will carry out amplification and carry out the regularization processing from the audio frequency simulation data that D/A conversion equipment 140 receives, then the above-mentioned audio frequency simulation data of handling through amplification are exported by the earphone that is connected with earphone jack 150, thereby made the user optimum condition listen to voice data.
In addition, though do not represent in Fig. 2, MP3 player 100 can also comprise following components: promptly the user is with its communication interface that is connected with computing machine, mobile communication terminal, individual carried terminal machine external voice data storage mediums such as (PDA:Personal Digital Assistant); The charging inlet device that can charge by the rechargeable battery of external power source feedway in power supplier 125; Wired and wireless remote controller receives control signal by the outside, and with the far distance controlled signal receiving device of its signal transmission control unit 130 etc.
As mentioned above, be provided with storer in the MP3 player, like this, need not to insert in addition traditional sound store media, the user also can play the desired voice data of listening to for a long time, and can guarantee that tonequality can not descend.
In addition, the MP3 player can also receive from multiple source of sound () audio frequency for example: music, language learning data, song etc.Then, the conversion of signals that is received is become the mp3 file form, and record and play.
But in this case, multiple MP3 source file (particularly external analog signal) is recorded according to original sound pressure level.Like this, when playing, the size of volume is also variant.Like this, when the volume standard that sets according to the user was play, the effect of every song just can not be identical.This is its existing problem.
Summary of the invention
The present invention is intended to address the above problem, and its purpose is to provide a kind of MP3 player and sound pressure level (Level) control method thereof.Promptly press and receive multiple source of sound, then the conversion of signals that is received is become the mp3 file form, when recording, sound pressure level is set according to user's requirement from the outside.Perhaps automatically the acoustic pressure size is regulated, thereby bring convenience to the user according to the certain criteria sound pressure level.
To achieve these goals, for receiving from the signal of external device (ED) input, it has following feature the MP3 player of then it being play: when promptly recording under the control of control device, input sound pressure level regulating device is compared the said external signal automatically or by user's operation with the predefined standard sound pressure level in being stored in storer, if the said external input signal is fainter, then source of sound being carried out amplification handles, it is stored in the storer, and the voice data that is stored in the above-mentioned storer is play.
In addition, MP3 player of the present invention also has following feature: promptly above-mentioned input sound pressure level regulating device receives the said external signal, perhaps the built-in FM or the AM broadcast singal sound pressure level that are attached to MP3 are monitored, then it is adjusted to desirable sound pressure level of user or default acoustic pressure standard value.
As another one desirable embodiment of the present invention, can receive external signal and the MP3 player that it is play is made of following components: promptly when the said external signal is recorded, when if its signal is fainter, the instruction inputting device that can set sound pressure level for source of sound being carried out amplification is handled and for the user then; Sound pressure level to current demand signal when the said external signal is recorded shows, perhaps when the user regulates the input sound pressure level by above-mentioned instruction inputting device, to its display device that shows; The said external signal is monitored at regular intervals, little if its sound pressure level is arbitrarily downgraded than default reference sound intensity, then improve its sound pressure level, if the sound pressure level that monitors signal, then reduces the input sound pressure level regulating device of its sound pressure level greater than certain sound pressure level; The user operates by above-mentioned instruction inputting device, perhaps automatically itself and predefined sound pressure level compared, and the control device that above-mentioned input sound pressure level regulating device is controlled.
Another one of the present invention side, for receiving external signal, the control method of the MP3 player of then it being play, it comprises following several stages: behind input said external signal, the said external signal is monitored at regular intervals, according to above-mentioned monitoring result, if its sound pressure level is arbitrarily downgraded little than predefined reference sound intensity, then improve its sound pressure level, if the sound pressure level that monitors signal is greater than certain sound pressure level, then reduce its sound pressure level, and be defined as the input sound pressure level adjusting stage of MP3 scrambler input.
In addition, the sound pressure level control method of MP3 player of the present invention also comprised with the next stage: in above-mentioned input sound pressure level before the adjusting stage, and the manual setting stage that the user sets desirable acoustic pressure rank by instruction inputting device; If the user does not set, the automatic setting stage that system then sets automatically.
In addition, the sound pressure level control method of MP3 player of the present invention also has following feature: promptly in above-mentioned observation process the voltage levvl (A/DC) of storage input end is measured, and judged.
As mentioned above, MP3 player of the present invention and sound pressure level control method thereof can receive from the multiple source of sound of outside input, then the conversion of signals that is received is become the mp3 file form, and when recording, can set sound pressure level according to user's wish, perhaps arbitrarily downgrade and automatically the size of acoustic pressure is regulated, thereby can bring great convenience for the user according to specific reference sound intensity.
That is, the sound pressure level of common broadcast and common music varies.Even when external voice is write down with the mp3 file form, according to the sensitivity of microphone, and the difference of the factors such as distance from the microphone to the source of sound, the difference of acoustic pressure sound pressure level is also very big.Therefore, input sound pressure level regulating device will be monitored every the regular hour from the simulating signal of external device (ED) input.According to the result of monitoring, little if the sound pressure level of external analog signal is arbitrarily downgraded than reference sound intensity, then improve its sound pressure level.If monitor the sound pressure level of the signal signal bigger, then reduce its sound pressure level, then as the input of MP3 scrambler and use than certain standard.Like this, the user just can store external analog signal and play with the mp3 file form of own desirable acoustic pressure sound pressure level, thereby can bring convenience for the user.
Description of drawings
Fig. 1 is the external structure stereographic map of existing MP3 player.
Fig. 2 is the functional block diagram of existing MP3 player.
Fig. 3 is the functional block diagram of the present invention's MP3 player.
Fig. 4 carries out the adjustment process workflow diagram that sound pressure level is regulated automatically to MP3 player of the present invention when carrying out the MP3 recording.
Accompanying drawing major part symbol description
100,200:MP3 player 110,210: storer
115,215: instruction inputting device 120,220: display device
125,225: power supplier 130,230: control device
135,235: demoder 140,240:D/A converting means
145,245: audio output device 150,250: earphone jack
155,255: scrambler 260: input sound pressure level regulating device
Embodiment
Below, with reference to the accompanying drawings desirable embodiment of the present invention is elaborated.
Fig. 3 is the functional block diagram of expression MP3 player of the present invention.
As shown in Figure 3, MP3 player 200 of the present invention is by constituting with the lower part: storer 210; Instruction inputting device 215; Display device 220; Power supplier 225; Control device 230; Input sound pressure level regulating device 260; Scrambler 255; Demoder 235; D/A conversion equipment 240; Audio output device 245; Earphone jack 250.
Here, under the control of control device 230, when people's simulating signals such as voice signal are recorded, input sound pressure level regulating device 260 automatically or under user's operation the said external signal is compared with the predefined sound pressure level in being stored in storer 210, according to comparative result, if above-mentioned input signal is fainter, then source of sound being carried out amplification handles, and be stored in the storer 210, the voice data (for example: song, language learning data, music etc.) that will be stored in then in the above-mentioned storer 210 is play by earphone jack 250.
In addition, the voltage levels of 260 pairs of storages of input sound pressure level regulating device input end are measured (A/D monitoring), then with the result that measured be stored in storer in the sound pressure level that configured compare.According to comparative result, if above-mentioned signal is fainter, then source of sound is carried out amplification and handle, then the input sound pressure level is carried out conversion.
In addition, input 260 pairs of external signals of sound pressure level regulating device (simulation external signal) receive, perhaps the built-in FM of MP3 or AM broadcasting receiver signal sound level are monitored, then it is adjusted to desirable sound pressure level of user or default standard sound pressure level, is stored in the MP3 player.
In addition, the common broadcasting and the sound pressure level of common music vary, even when external voice (voice) write down with the mp3 file form, according to the sensitivity of microphone, and the difference of the factors such as distance from the microphone to the source of sound, the difference of sound pressure level is also very big.Therefore, input sound pressure level regulating device 260 will be monitored every the regular hour from the simulating signal of external device (ED) input, according to the result of monitoring, if the sound pressure level of signal then improves its sound pressure level than little with the sound pressure level of standard setting.If the sound pressure level that monitors signal then reduces its sound pressure level greater than certain sound pressure level.Then with it as the input of MP3 scrambler and use.Like this, user's mp3 file form that just external analog signal can be changed into own desirable acoustic pressure standard is stored.
Therefore, by above-mentioned processing procedure, just the mp3 file form that external signal is arbitrarily downgraded according to predefined reference sound intensity can be stored.Simultaneously, when the broadcasting receiver signal that MP3 equipment is built-in was stored with the mp3 file form, its sound pressure level also can change.
In addition, 260 pairs of external voices by the microphone input of input sound pressure level regulating device are monitored at regular intervals, and can according to circumstances change sound pressure level, then, itself and the sound pressure level that is stored in the basic storage are compared.If result relatively be the sound pressure level of external voice than being stored under the little or big situation of sound pressure level in the basic storage, then automatically sound pressure level is regulated.
In addition, instruction inputting device 215 includes input sound pressure level adjusting button.Like this, even when speaker's etc. speech is recorded,, then the user can be set to sound pressure level for source of sound being carried out amplification handle if its signal is more weak.Certainly, it can also comprise broadcast button, menu button, pause button, song selector button, and keeps (HOLD) switch.
In addition, when external analog signal was recorded, display device 220 can show current signal sound level, perhaps when the user imports sound pressure level and regulates by instruction inputting device 215, relevant adjustment information shown.Certainly, above-mentioned display device 220 can show the situations such as voice data information in the identifying information in the storer 210, the broadcast, thereby the information of MP3 player is notified to the user.
In addition, power supplier 225 is in order to make the MP3 player 200 can operate as normal and provide the device of required power supply to it.
For power supplier 225, for example: it can be such as portable supply units such as rechargeable battery, dry cells, also can be the power supply adaptor coupling arrangement etc. that connects the external power source feedway.
In addition, when external analog signal is recorded, 230 pairs of control device input sound pressure level regulating device 260 is controlled, and by the user instruction inputting device 215 is operated then or automatically the sound pressure level and the predefined standard sound pressure level of said external simulating signal is carried out comparison, according to comparative result, if the sound pressure level of above-mentioned signal is more weak, then source of sound is carried out amplification and handle, change the input sound pressure level, then, it being carried out encoding process is the mp3 file form.
In addition, control device 230 is in order to change through above-mentioned input sound pressure level, open the voice data that is stored in the storer 210 with the mp3 file form and export, and instruction inputting device 215, display device 120, power supplier 125, input sound pressure level regulating device 260, demoder 135 etc. are controlled by earphone jack.
In addition, demoder 235 is under the control of control device 230, reads the mp3 file information that is stored in the storer 210, and to its decode (decoding), thereby generate the digital audio data.
In addition, D/A conversion equipment 240 is that the digital audio data-switching that will generate by demoder 235 becomes simulating signal, and generates the device of audio frequency simulation data.
In addition, audio output device 245 will carry out amplification and waveform regularization processing from the audio frequency simulation data that D/A conversion equipment 240 receives, then the above-mentioned audio frequency simulation data of handling through amplification are exported by the earphone that is connected with earphone jack 250, thereby the user can be listened to voice data in optimum condition.
Fig. 4 is that MP3 player of the present invention carries out the workflow diagram that sound pressure level is regulated automatically when carrying out the MP3 recording.
As shown in Figure 4, when attending a lecture, when wanting the people's that gives lessons sound recorded, the user just can be with simulating signal to MP3 player input (S11).
Then, when the user set sound pressure level, input sound pressure level regulating device will be judged the sound pressure level height (S12) whether the sound pressure level of external analog signal sets than the user by A/DC, (S13).
Here, if input sound pressure level regulating device judges that the sound pressure level of external analog signal is lower than the sound pressure level that the user sets, then its sound pressure level is carried out amplification and handle (S14), otherwise just reduce the sound pressure level of external analog signal, by scrambler it is carried out encoding process then and become mp3 file form (S17).
But when the user did not set the rank sound pressure level by instruction inputting device, whether the sound pressure level that the input reference pilot is judged external analog signal by A/DC was than the standard sound pressure level high (S15) of automatic setting, (S16).
Here, when input sound pressure level regulating device is hanged down than the sound pressure level of control device automatic setting when the sound pressure level of external analog signal, then its sound pressure level is carried out amplification (S16), otherwise just reduce the sound pressure level of external analog signal, by scrambler it being carried out encoding process then is mp3 file form (S17).
Then, will store into through the mp3 file of encoding process (S18) in the storer, and will be stored in the storer mp3 file through the decoding, the D/A transfer process, play (S19) then, so far, this process just is all over.
That is, input sound pressure level regulating device is just monitored the simulating signal of importing from the outside at regular intervals, and itself and the sound pressure level of setting according to normal condition are compared.According to comparative result,, then its sound pressure level is improved if the sound pressure level of external analog signal is littler than predefined sound pressure level.If monitor its sound pressure level signal bigger, then reduce its sound pressure level, then as the input of MP3 scrambler and use than certain sound pressure level.Like this, the user can store external analog signal with the mp3 file form of own desirable sound pressure level.
In the present embodiment the voice data type-restriction that can play is described at the mp3 file form.But in addition, the present invention is applicable to WMA multiple voice datas such as (MicrosoftWindows Media Audio File) too.Be that MP3 player of the present invention also can be play the sound data file of other type, this point also is fully possible.
By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.
Therefore, the technical scope of this invention is not limited to the content on the instructions, must determine its technical scope according to interest field.
Claims (6)
1, a kind of MP3 player is used to receive external signal and it is play, and above-mentioned MP3 player feature comprises:
When under the control of control device, recording, input sound pressure level regulating device is compared the said external signal with the sound pressure level that operation automatic or by the user is set in advance in the storer, when the said external input signal is faint, after then source of sound being carried out the amplification processing, it is stored in the above-mentioned storer, and the voice data that is stored in the above-mentioned storer is play.
2, MP3 player according to claim 1 is characterized by:
Above-mentioned input sound pressure level regulating device receives the said external signal, perhaps the sound pressure level of built-in FM of MP3 and AM broadcasting receiver signal is monitored, and it is adjusted into the desirable sound pressure level of user or predefined reference sound intensity is arbitrarily downgraded.
3, a kind of MP3 player, its feature comprises:
When the said external signal is recorded, when its weak output signal, the instruction inputting device of for the user sound pressure level being set for source of sound being carried out amplification handle;
Sound pressure level to current demand signal when the said external signal is recorded shows, perhaps when the user regulates the sound pressure level of input by above-mentioned instruction inputting device, to its display device that shows;
The said external signal timing is monitored, little if the sound pressure level of external signal is arbitrarily downgraded than default reference sound intensity, then improve its sound pressure level, if monitor the sound pressure level overgauge value of signal, then reduce the input sound pressure level regulating device of its sound pressure level;
The user operates by above-mentioned instruction inputting device, perhaps automatically itself and default sound pressure level compared, and the control device that above-mentioned input sound pressure level regulating device is controlled.
4, a kind of sound pressure level control method of MP3 player, its feature comprises:
Behind input said external signal, the said external signal timing is monitored, if the external signal sound pressure level is arbitrarily downgraded little than predefined reference sound intensity, then improve its sound pressure level, if monitor the sound pressure level overgauge value of signal, then reduce its sound pressure level, and the input sound pressure level of using as the input of MP3 scrambler is regulated the stage.
5, MP3 player sound pressure level control method as claimed in claim 4, its feature comprises:
Carrying out above-mentioned input sound pressure level before the adjusting stage, the manual setting stage that the user sets desirable sound pressure level by instruction inputting device;
If the user does not set, the automatic setting stage of system then with regard to setting automatically.
6, MP3 player sound pressure level control method as claimed in claim 4 is characterized by,
In above-mentioned observation process, the voltage levvl (A/DC) of storage input end is measured and judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100326952A CN100409344C (en) | 2005-01-17 | 2005-01-17 | MP3 player and its acoustic pressure level adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100326952A CN100409344C (en) | 2005-01-17 | 2005-01-17 | MP3 player and its acoustic pressure level adjusting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1808600A true CN1808600A (en) | 2006-07-26 |
| CN100409344C CN100409344C (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100326952A Expired - Fee Related CN100409344C (en) | 2005-01-17 | 2005-01-17 | MP3 player and its acoustic pressure level adjusting method |
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| CN (1) | CN100409344C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113450846A (en) * | 2020-03-27 | 2021-09-28 | 上海汽车集团股份有限公司 | Sound pressure level calibration method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7142678B2 (en) * | 2002-11-26 | 2006-11-28 | Microsoft Corporation | Dynamic volume control |
| KR20040066651A (en) * | 2003-01-20 | 2004-07-27 | 엘지전자 주식회사 | Method and apparatus for controling record audio level |
-
2005
- 2005-01-17 CN CNB2005100326952A patent/CN100409344C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113450846A (en) * | 2020-03-27 | 2021-09-28 | 上海汽车集团股份有限公司 | Sound pressure level calibration method and device |
| CN113450846B (en) * | 2020-03-27 | 2024-01-23 | 上海汽车集团股份有限公司 | Sound pressure level calibration method and device |
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| Publication number | Publication date |
|---|---|
| CN100409344C (en) | 2008-08-06 |
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