CN101247112A - Audio device - Google Patents
Audio device Download PDFInfo
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- CN101247112A CN101247112A CNA2007100052398A CN200710005239A CN101247112A CN 101247112 A CN101247112 A CN 101247112A CN A2007100052398 A CNA2007100052398 A CN A2007100052398A CN 200710005239 A CN200710005239 A CN 200710005239A CN 101247112 A CN101247112 A CN 101247112A
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- voice signal
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- portable recording
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Abstract
The aim of the invention is to provide an audio device which can appropriately adjust the input level according to the audio frequency source. The audio device comprises the following components: a connecting part which is connected to the portable recording medium and inputs the sound signal of the audio file recorded on the portable recording medium with the analog signal; an amplifier which amplifies the sound signal; and an output unit which outputs the amplified sound signal; the invention also comprises the following components: a reference audio file storing part which is stored with the reference audio file; a control part which transmits the reference audio file to the portable recording medium through the connecting part and outputs the instruction that reproduces the sound signal of the reference audio file transmitted to the portable recording medium; a level checking unit which checks the reproduced electrical level of the sound signal of the audio file; and a level adjusting unit which adjusts the input level of the sound signal of the audio file inputted from the portable recording medium according to the reproduced level.
Description
Technical field
The present invention relates to a kind of audio devices that can carry out revisal to incoming level.Be particularly related to and a kind ofly can make DSP (Digital Signal Processor: the optimized audio devices of incoming level digital signal processor).
Background technology
Now, exist much to be installed in the input installation product that is used to import audio frequency on the portable equipment, thereby simply import different audio-source.
But, (the portable equipment etc. for example because each external equipment, below be example with the portable equipment) the classification difference, when being connected same audio devices on the different portable equipments, can exist different incoming levels poor, therefore need when each switch audio sources, adjust, bring a lot of inconvenience thus incoming level.
Particularly under the situation of the product that is equipped with DSP, the level of input DSP has following characteristic, promptly, if overload (over level), then produce distortion, on the other hand, if level is low excessively,, be very important then so the level of input DSP is set owing to the making property of quantization noise of DSP is made an uproar than (SN) deterioration.
Under above-mentioned prerequisite, some audio devices also has the function that cooperates audio level to carry out the level adjustment automatically, but because the difference of music source has inharmonious sense in various degree.Special today of constantly developing at the needs of copyright protection; in order to prevent abuse to the copyright owner; usually in portable equipment, the audio-frequency information of digital form is converted to the laggard line output of information of analog form, thereby between equipment, carry out the transmitting-receiving of information (for example music data) with analog form.In this case, in afterwards power supply of the digital to analog converter (DAC) of portable equipment, circuit structure, produce the poor of audio level, thereby influence the adjustment of audio devices at the incoming level that former digital audio source carried out.
In the prior art, for the level difference between the abatement apparatus, exist machine is judged, carried out the technology (for example with reference to patent documentation 1) that level is adjusted according to machine again.
In the technology of patent documentation 1, the audio devices basis is from the status signal of the connector of the stube cable that is connected with portable equipment, judge the classification of portable equipment, adjust signal, adjust signal according to this volume/tonequality again and adjust according to this classification output volume/tonequality.
[patent documentation 1] TOHKEMY 2006-311097 communique
But, according to this patent documentation 1 disclosed technology, must know the kind of portable equipment in advance, and, need to set different adjustment modes according to different device classes in advance, after judging device class, select corresponding adjustment mode, therefore, there is following shortcoming, that is, if in same device category but under the situation and device category condition of unknown that equipment room there are differences, then can't carry out the adjustment of level.
Summary of the invention
The present invention finishes in order to address the above problem, and its purpose is to provide a kind of audio devices that can suitably adjust incoming level according to audio-source.
The 1st technical scheme of the present invention is a kind of audio devices, has: connecting portion, be connected with portable recording medium, and be recorded in the voice signal of the audio file in the above-mentioned portable recording medium with the analog signal input; Amplifier amplifies the tut signal; And output unit, with the voice signal output after amplifying; It is characterized in that, also comprise: the base sound file storage part, store the base sound file, this base sound file is with the voice signal of the record form record reference volume level identical with the audio file of above-mentioned portable recording medium; Control part is sent to above-mentioned portable recording medium via above-mentioned connecting portion with the said reference audio files, and exports the instruction of the voice signal reproduction of the base sound file that will be sent to above-mentioned portable recording medium; Level detection unit detects the reproduction level of the voice signal of said reference audio files; And the level adjustment unit, according to by the detected reproduction level of above-mentioned level detection unit, the incoming level from the voice signal of the audio file of above-mentioned portable recording medium input is adjusted.
According to this technical scheme, audio devices can be adjusted incoming level in advance by reproducing the base sound file, thereby sets best level.Owing to can carry out best setting by equipment, so can not have to listen to music under the state of level difference.
The 2nd technical scheme of the present invention is, in the described audio devices of the 1st technical scheme, also has digital signal processor, and the voice signal that is carried out the audio file after the level adjustment by above-mentioned level adjustment unit is transfused to this digital signal processor.
According to this technical scheme, because when being connected with DSP, the maximum of level that can be by institute's connection device is set, so can realize the optimization of DSP incoming level.
The 3rd technical scheme of the present invention is that in the 1st technical scheme or the described audio devices of the 2nd technical scheme, the voice signal of said reference audio files is that frequency is the voice signal outside the audio-band.
According to this technical scheme, when the voice signal of regeneration base sound file, can the user of audio devices not exerted an influence.
The 4th technical scheme of the present invention is, in the described audio devices of the 1st technical scheme, also comprises the off beat unit, and the voice signal that is carried out the audio file after the level adjustment by above-mentioned level adjustment unit is transfused to this off beat unit.
According to this technical scheme, can obtain the off beat function, thereby make the user obtain better audibility.
Description of drawings
Fig. 1 is the structure key diagram of the audio devices of embodiment of the present invention.
Fig. 2 is the key diagram of the inner concrete structure of portable equipment in the expression embodiments of the present invention.
Fig. 3 is the flow chart that the audio devices of expression embodiment of the present invention carries out level adjustment.
Embodiment
Specify the execution mode of audio devices involved in the present invention below in conjunction with accompanying drawing.
Fig. 1 is the structure key diagram of the audio devices of embodiment of the present invention.State when expressing audio devices of the present invention and being connected with external equipment (portable equipment) 10.
In the present embodiment, audio devices is connected with multiple external equipment, can be with numeral or analog content reproduction and the output that is input to from external equipment this audio devices, as external equipment portable equipment 10 or CD Disc player 40 etc. are arranged, and, also can on audio devices, connect antenna 50, thereby receive the content that needs reproduction from the outside by wireless network.
As shown in Figure 1, audio devices in the present embodiment comprises preposition unit 24, IF/DET (intermediate frequency/wave detector) 25, sound volume regulation unit 33,35, DSP34, off beat circuit 32, amplifier 31, loud speaker 60, driver 22, display 23, microcomputer 20, phase-locked loop 21.
Wherein, preposition unit 24, IF/DET (intermediate frequency/wave detector) 25 and phase-locked loop 21 are the common components in the ordinary audio device, have functions such as frequency-selecting amplification, can be optimized adjusting to signal from the external equipment input, but be not essential function in the present invention, therefore omit detailed description thereof.
33,35 pairs of volume levels of sound volume regulation unit are regulated, and change the volume of output.
DSP is a kind of microprocessor, can handle bulk information with digital signal.In addition, off beat circuit 32 can carry out the off beat processing to the signal of being imported.
The signal file of storage 1kHz0dB in signal file memory 201, this signal file is the file made from compression forms such as MP3 in advance, and described signal file records the voice signal of reference volume level with the record form identical with audio file in the portable equipment 10 that audio devices is connected.In addition, 1kHz0dB is the value that adopts in order to prevent noise effect, and certainly, this signal file might not be 1kHz0dB, also can adopt other value.
In addition, for understanding the present invention better, need the brief description once structure of portable equipment 10 and the processing procedure of audio content.Fig. 2 is the key diagram of the inside concrete structure of the portable equipment 10 in the expression embodiments of the present invention.
In Fig. 2, portable equipment 10 comprises CPU11, memory 12, mp3/wma decoder 13, DAC14, filter 15 and communication I/F circuit 16.
CPU11 is a kind of processor, and control is to the reproduction of audio content.Storage needs the audio content of reproduction in memory 12.This audio content generally with the content stores of compression such as Mp3 form in memory 12.DAC14 is a digital converter, outputs to the audio devices after will being converted to analog signal from the digital signal of mp3/wma decoder 13 input.
Under portable equipment 10 is connected to situation on the audio devices, by carrying out input and output between communication I/F circuit 16 and filter 15 and the audio devices.
When portable equipment 10 needs reproducing audio signal, at first, the CPU11 indication of setting out, the digital compression content that the needs that are stored in the memory 12 are reproduced is sent in the mp3/wma decoder 13, forms digital signal after decoding in mp3/wma decoder 13.Then, the digital signal after the decoding outputed to carry out number conversion among the DAC14, thus the formation analog signal.This analog signal is output to audio devices after filter 15 carries out filtering.On the other hand, audio devices can transmit signal or file etc. to CPU11 by communication I/F circuit 16.
Because portable equipment 10 inside have above structure, therefore the audio content that is stored in the memory 12 can be reproduced back input audio devices, by audio devices audio signal is carried out exporting after the processing and amplifying, and by user's audiovisual.
Below, utilize Fig. 3, the motion flow of audio devices of the present invention is described.Fig. 3 is the flow chart that the audio devices of expression embodiment of the present invention carries out level adjustment.
In signal file memory 201, store the signal file of 1kHz0dB in advance, this signal file is as the sample of the body matter that will reproduce, and the digital record form of the audio file in its digital record form and the portable equipment that audio devices is connected is identical.
Operation (for example key input etc.) by the user, thereby after the level adjustment of the audio devices of the present invention action beginning (step S101), at first, microcomputer 20 checks whether audio devices is connected to portable equipment 10 (step S102), when the result of step S102 is "No", regularly just check connection status once more every regulation, till the result of step S102 is "Yes".When the result of step S102 is "Yes", enter into step S103.
Then, in step S103, judge whether to have carried out the adjusting of volume level, when judged result was "Yes", end setup when judged result is "No", entered step S104.
In step S104, microcomputer 20 takes out signal file from signal file memory 201, and sends the communication I/F circuit 16 of portable equipment to via sound volume regulation unit 35, and this signal file is reproduced in request.The portable equipment 10 that receives signal file utilizes common reproduction mode with the signal file decoding and convert to and return this audio devices after the analog signal and play.Then, the mute (step S105) that the audio devices unlatching is made of off beat circuit 32 is play through the signal file after the off beat processing at step S106, and enters the judgement among the step S108.
In step S108, the broadcast that microcomputer 20 utilizes this signal file comes decision level whether to be suitable for this portable equipment 10.Because the signal file of storage is with the voice signal of the record form record reference volume level identical with the audio file of above-mentioned portable equipment in signal file memory 201, therefore, by comparing this reference volume level and reproducing volume level afterwards (be called later on and reproduce volume level) through portable equipment, can decision level whether suitable, when the reproduction volume level is higher than this reference volume level, be judged as " height ", thereby enter step S110, regulate and reduce after the level, return the judgement that step S108 proceeds level; When the reproduction volume level is lower than this reference volume level, be judged as " low ", thereby enter step S109, regulate after the rising level, return the judgement that step S108 proceeds level; When the reproduction volume level equals this reference volume level, be judged as " suitable ", thereby enter step S111.
Then, in step S111, close mute, and enter step 112, finish this electrical level judging action.
Audio devices is finished level adjustment, thereby can be regulated the volume level of broadcast easily automatically through each above action.And,, can take the time of user's audiovisual hardly owing to utilize the less signal file of document size to carry out level detection.And, utilize signal file with the voice signal of the record form record reference volume level identical with the audio file of portable equipment, the very accurately variation of decision level, thus be adjusted to only level.
Variation
Below at length introduced the flow process of concrete structure of the present invention and action, but scope of the present invention is not limited to above embodiment, also can carries out various distortion.
For example, in order to make audio frequency apparatus reach best audio frequency amplification effect, added the function of some optimizations in the above-described embodiment, for example off beat circuit, DSP etc. still, also can implement the present invention in the audio devices that does not have these additional functions, equally also can reach the effect of level detection of the present invention, at this moment, do not have step S105 and step S111 in the flow chart in Fig. 3, other steps are identical with the described flow chart of Fig. 3.
Determine that the user audio devices has been connected under the situation on the portable equipment 10, can not carry out the whether judgement of connection device, and directly enter the judgement of whether finishing setting.And then, also can whether not finish the judgement of setting, and directly transmit file, carry out the detection of level.Under situation about having set, can prolong the time of level detection although it is so, still, under the last current situation far away of setting-up time distance once,, can more accurately set level by setting once more to same portable equipment 10.
In addition, the voice signal of said reference audio files also can be that frequency is the voice signal outside the audio-band.Like this, when carrying out level detection, can not bother the user owing to sending sub-audible sound yet.
To sum up, according to this technical scheme, audio devices can be adjusted incoming level in advance by reproducing the base sound file, thereby sets best level.Owing to can carry out best setting by equipment, so can not have to listen to music under the state of level difference.
Claims (4)
1. audio devices has: connecting portion, be connected with portable recording medium, and be recorded in the voice signal of the audio file in the above-mentioned portable recording medium with the analog signal input; Amplifier amplifies the tut signal; And output unit, with the voice signal output after amplifying; It is characterized in that, also comprise:
The base sound file storage part stores the base sound file, and this base sound file is with the voice signal of the record form record reference volume level identical with the audio file of above-mentioned portable recording medium;
Control part is sent to above-mentioned portable recording medium via above-mentioned connecting portion with the said reference audio files, and exports the instruction of the voice signal reproduction of the base sound file that will be sent to above-mentioned portable recording medium;
Level detection unit detects the reproduction level of the voice signal of said reference audio files; And
The level adjustment unit according to by the detected reproduction level of above-mentioned level detection unit, is adjusted the incoming level from the voice signal of the audio file of above-mentioned portable recording medium input.
2. audio devices as claimed in claim 1 is characterized in that, also has digital signal processor, and the voice signal that is carried out level adjustment audio file afterwards by above-mentioned level adjustment unit is transfused to this digital signal processor.
3. audio devices as claimed in claim 1 or 2 is characterized in that, the voice signal of said reference audio files is that frequency is the voice signal outside the audio-band.
4. audio devices as claimed in claim 1 is characterized in that, also comprises the off beat unit, and the voice signal that is carried out level adjustment audio file afterwards by above-mentioned level adjustment unit is transfused to this off beat unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100052398A CN101247112A (en) | 2007-02-12 | 2007-02-12 | Audio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100052398A CN101247112A (en) | 2007-02-12 | 2007-02-12 | Audio device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101247112A true CN101247112A (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100052398A Pending CN101247112A (en) | 2007-02-12 | 2007-02-12 | Audio device |
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| CN (1) | CN101247112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031030A (en) * | 2014-02-27 | 2016-10-12 | 索尼公司 | Gain optimized equalizer |
-
2007
- 2007-02-12 CN CNA2007100052398A patent/CN101247112A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031030A (en) * | 2014-02-27 | 2016-10-12 | 索尼公司 | Gain optimized equalizer |
| CN106031030B (en) * | 2014-02-27 | 2018-11-16 | 索尼公司 | The balanced device of gain optimization |
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Open date: 20080820 |