CN103841492A - Output method of audio signal and apparatus - Google Patents
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Abstract
The invention discloses an output method of an audio signal, wherein the method is applied to electronic equipment with an audio playing unit. The output method comprises the following steps that: a first audio input signal is obtained; whether the first audio input signal meets a preset condition is determined, wherein the preset condition is one for determining whether at least one attribute of the audio playing unit meets at least one preset value after the audio input signal is inputted into the audio playing unit; when the first audio input signal does not meet the preset condition, the first audio input signal is adjusted and a second audio input signal is obtained, wherein the second audio input signal meets the preset condition; and the second audio input signal is outputted to the audio playing unit.
Description
Technical field
The present invention relates to communication and electronic applications, particularly a kind of output intent of audio signal and device.
Background technology
The terminal equipments such as mobile phone, panel computer, intelligent television, loudspeaker are indispensable, sound size, tonequality quality are all that user pays close attention to, or even can left and right user whether buy this product.Loudspeaker work long hours under relatively high power, and due to the low cause of electro-acoustic conversion efficiency, loudspeaker are very easy to heating, the accumulation of Long Time Thermal can cause the insulating varnish of horn coil to come off, and resistance declines, and heating is sharply risen, thereby cause sound film to melt distortion, occur noise, even noiseless.
Prior art is taked the technical scheme of the anti-distorsion audio frequency power amplifier of automatic gain control, by the magnitude of voltage of a negative feedback unit inspection associated electronic device, in the time that the magnitude of voltage detecting exceedes the maximum voltage that electronic equipment power supply can support, by negative feedback unit, described voltage signal is fed back to audio power amplifier unit, audio power amplifier unit reduces the gain multiple of self, to reduce output voltage, and then can guarantee that output signal is undistorted.
Present inventor is realizing in the process of the embodiment of the present application technical scheme, at least finds to exist in prior art following technical problem:
Because the automatic gain control of prior art only guarantees that exported audio signal is undistorted, but can not guarantee to work under the parameter of the safety that the audio playing unit of electronic equipment can bear at self, therefore, exist in the time that power output is excessive, will cause the sound film amplitude of the audio playing unit of electronic equipment to exceed scope of design, cause sound film to touch the technical problem that protecgulum maybe cannot reset.
Because the control of prior art automatic gain only guarantees that exported audio signal is undistorted, but can not guarantee to work under the parameter of the safety that the audio playing unit of electronic equipment can bear at self, therefore, also exist in the time that audio playing unit works long hours, loudspeaker caloric value rises, cause the insulating varnish of horn coil to come off, resistance declines, the technical problem that heating is sharply risen.
To sum up, there is the audio input signal that can not automatically regulate according to the service condition of audio playing unit electronic equipment in prior art, so that the technical problem in the safe range that the attribute such as amplitude and/or temperature of audio playing unit can bear at audio playing unit.
Summary of the invention
The embodiment of the present application provides a kind of output intent of audio signal, can solve the audio input signal that can not automatically regulate according to the service condition of audio playing unit electronic equipment existing in prior art, so that the technical problem in the safe range that the attribute such as amplitude and/or temperature of audio playing unit can bear at audio playing unit.
In order to address the above problem, the embodiment of the present application provides a kind of output intent of audio signal, is applied to one and has in the electronic equipment of audio playing unit, and described method comprises:
Obtain the first audio input signal;
Judge that whether described the first audio input signal meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value;
Do not meet describedly when pre-conditioned at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, wherein, described the second audio input signal meets described pre-conditioned;
Export described the second audio input signal to described audio playing unit.
Preferably, the concrete steps of described acquisition the first audio input signal comprise:
Obtain the 3rd audio input signal;
Described the 3rd audio input signal is done to amplify through an audio power amplifier unit and process, obtain described the first audio input signal.
Preferably, in the time that described at least one preset value is specially preset temperature value and/or default amplitude, described to judge that whether described the first audio input signal meets one pre-conditioned, specifically comprises:
Based on described the first audio input signal, obtain the first current value of the described audio playing unit corresponding with described the first audio input signal;
Contrast relationship table between current value based on described audio playing unit and temperature value and/or amplitude, obtains the first temperature value and/or first amplitude of the described audio playing unit corresponding with described the first current value;
Judge whether described the first temperature value is greater than described preset temperature value; And/or judge whether described the first amplitude is greater than described default amplitude.
Preferably, in the time that described at least one property value is specially temperature value, describedly do not meet describedly when pre-conditioned at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, specifically comprise:
Obtain first of described audio playing unit and stablize audio input signal, described first to stablize audio input signal be temperature value when described audio playing unit corresponding audio input signal during in described preset temperature value;
Stablize audio input signal based on described first, generate for adjusting second of described the first audio input signal and adjust instruction;
Carry out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described first current value of stablizing the corresponding described audio playing unit of audio input signal.
Preferably, in the time that at least one property value of described audio playing unit is specially amplitude, describedly do not meet describedly when pre-conditioned at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, specifically comprise:
Obtain second of described audio playing unit and stablize audio input signal, described second to stablize audio input signal be amplitude when described audio playing unit corresponding audio input signal during at described default amplitude;
Stablize audio input signal based on described second, generate for adjusting second of described the first audio input signal and adjust instruction;
Carry out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described second current value of stablizing the corresponding described audio playing unit of audio input signal.
Accordingly, the embodiment of the present application also provides a kind of electronic equipment corresponding with said method, the same audio input signal that can not automatically regulate according to the service condition of audio playing unit electronic equipment existing for solving prior art, so that the technical problem in the safe range that the attribute such as amplitude and/or temperature of audio playing unit can bear at audio playing unit.Described electronic equipment has an audio playing unit, and this electronic equipment specifically comprises:
Obtain unit, for obtaining the first audio input signal;
Judging unit, be connected with described acquisition unit, be used for judging that whether described the first audio input signal meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value;
Adjustment unit, be connected with described judging unit, described acquisition unit respectively, described when pre-conditioned for not meeting at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, wherein, described the second audio input signal meets described pre-conditioned;
Output unit, is connected with described acquisition unit, judging unit respectively, for exporting described the second audio input signal to described audio playing unit.
Preferably, described acquisition unit specifically comprises:
First obtains unit, for obtaining the 3rd audio input signal;
Audio power amplifier unit, is connected with described the first acquisition unit, processes for described the 3rd audio input signal is done to amplify through an audio power amplifier unit, obtains described the first audio input signal.
Preferably, in the time that described at least one preset value is specially preset temperature value and/or default amplitude, described judging unit specifically comprises:
Second obtains unit, for based on described the first audio input signal, obtains the first current value of the described audio playing unit corresponding with described the first audio input signal;
The 3rd obtains unit, be connected with described the second acquisition unit, for the contrast relationship table between current value and temperature value and/or amplitude based on described audio playing unit, obtain the first temperature value and/or first amplitude of the described audio playing unit corresponding with described the first current value;
The first judging unit, is connected with described the 3rd acquisition unit, for judging whether described the first temperature value is greater than described preset temperature value; And/or judge whether described the first amplitude is greater than described default amplitude.
Preferably, in the time that described at least one property value is specially temperature value, described adjustment unit specifically comprises:
The 4th obtains unit, stablizes audio input signal for obtaining first of described audio playing unit, and described first to stablize audio input signal be temperature value when described audio playing unit corresponding audio input signal during in described preset temperature value;
The first instruction generation unit, obtains unit and is connected with the described the 4th, for stablize audio input signal based on described first, generates the second adjustment instruction that is used for adjusting described the first audio input signal;
The first instruction execution unit, be connected with described the first instruction generation unit, be used for carrying out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described first current value of stablizing the corresponding described audio playing unit of audio input signal.
Preferably, in the time that at least one property value of described audio playing unit is specially amplitude, described adjustment unit specifically comprises:
The 5th obtains unit, stablizes audio input signal for obtaining second of described audio playing unit, and described second to stablize audio input signal be amplitude when described audio playing unit corresponding audio input signal during at described default amplitude;
The second instruction generation unit, obtains unit and is connected with the described the 5th, for stablize audio input signal based on described second, generates the second adjustment instruction that is used for adjusting described the first audio input signal;
The second instruction execution unit, be connected with described the second instruction generation unit, be used for carrying out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described second current value of stablizing the corresponding described audio playing unit of audio input signal.
The technique scheme that the embodiment of the present application provides, at least has following technique effect or advantage:
Owing to having adopted the service condition of the audio playing unit obtaining according to electronic equipment automatically to regulate the audio input signal of electronic equipment, regulate the property value such as amplitude and/or temperature of audio playing unit to the technological means within the scope of the security attribute value of audio playing unit to reach, solve the audio input signal that can not automatically regulate according to the service condition of audio playing unit electronic equipment existing in prior art, so that the technical problem in the safe range that the property value such as amplitude and/or temperature of audio playing unit can bear at audio playing unit.Thereby; there is the audio input signal that can automatically regulate according to the service condition of audio playing unit electronic equipment; so that the attribute such as amplitude and/or temperature of audio playing unit is in the safe range of audio playing unit, to protect the not impaired technique effect of described audio playing unit.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of output intent of audio signal in the embodiment of the present application;
Fig. 2 be in the embodiment of the present application in the time that at least one preset value is specially preset temperature value and/or default amplitude, judge that whether described the first audio input signal meets the flow chart of pre-conditioned concrete steps;
Fig. 3 is when in the embodiment of the present application, at least one property value when described audio playing unit is specially temperature value, the specific implementation flow chart of step 103;
Fig. 4 is when in the embodiment of the present application, at least one property value when described audio playing unit is specially amplitude, the specific implementation flow chart of step 103;
Fig. 5 is the concrete structure figure of a kind of electronic equipment in the embodiment of the present application;
Fig. 6 be in the embodiment of the present application in the time that described at least one preset value is specially preset temperature value and/or default amplitude, the concrete structure figure of described judging unit 502;
Fig. 7 be in the embodiment of the present application in the time that described at least one property value is specially temperature value, the concrete structure figure of described adjustment unit 503;
Fig. 8 be in the embodiment of the present application in the time that described at least one property value is specially amplitude, the concrete structure figure of described adjustment unit 503.
Embodiment
The embodiment of the present application is by providing a kind of output intent of audio signal, solve the audio input signal that can not automatically regulate according to the service condition of audio playing unit electronic equipment in prior art, so that the technical problem in the safe range that the attribute such as amplitude and/or temperature of audio playing unit can bear at audio playing unit.
The technical scheme of the embodiment of the present application is for solving the problems of the technologies described above, and general thought is as follows:
First, electronic equipment obtains the first audio input signal that is input to electronic equipment audio playing unit; Then, judge that whether described the first audio input signal obtaining meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value, the threshold value of this audio playing unit property value that this preset value normally obtains according to combined factors analyses such as the applied environments of the electronic equipment of the manufacture craft of described audio playing unit, manufactured materials and practical application, i.e. maximum bearing value; Afterwards, do not meet describedly when pre-conditioned judging described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, wherein, described the second audio input signal meets described pre-conditioned; Finally, described electronic equipment is exported described the second audio input signal to described audio playing unit.
By adopting the technical scheme in the embodiment of the present application, electronic equipment can judge that this audio input signal is input to after the audio playing unit of electronic equipment according to the current audio input signal of audio playing unit, can at least one attribute of this audio playing unit meet the condition of at least one preset value, do not meet when pre-conditioned judging this audio input signal, automatically regulate the audio input signal of electronic equipment, so that in the safe range that at least one attribute of audio playing unit can bear at audio playing unit.
In order better to understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail, and this technical scheme is done to optimization process.
The output intent of a kind of audio signal that the embodiment of the present application provides, is applied to one and has in the electronic equipment of audio playing unit, and particularly, this electronic equipment can be computer, mobile phone, intelligent television, IPAD, MP4 etc.The embodiment of the present application does not limit the scope of electronic equipment, and every electronic equipment with audio playing unit all should be in the claimed scope of the application, and particularly, as shown in Figure 1, concrete steps comprise the idiographic flow of the output intent of described audio signal:
Step 101: obtain the first audio input signal;
Particularly, audio signal is regular sound wave frequency, the changes in amplitude information carrier with voice, music and audio.Wherein, frequency is for representing the tone height of sound of audio signal, and the frequency more tone of high sound is higher, and amplitude is for representing the volume of sound of audio signal, and the amplitude more volume of loud noise is also larger.And the size reality of this amplitude is also the current value size of this audio signal, therefore, can obtain the size of current corresponding with this audio signal according to audio signal.In specific implementation process, undistorted in order to guarantee the sound of output, adjusting when audio input signal, be all generally under the constant prerequisite of frequency in audio signal, the amplitude of audio signal to be adjusted guaranteeing.And for audio signal, larger its corresponding electric current of amplitude is also naturally larger, and the amplitude of the audio signal obtaining is the now current value of this audio signal, and this current value is a value constantly changing.
In specific implementation process, the first audio input signal is to be directly inputted on the audio playing unit of electronic equipment, and at computer, mobile phone, intelligent television, IPAD, on the electronic equipments such as MP4, the first audio input signal that is input to audio playing unit is processed the audio signal obtaining for the audio frequency power amplifier through electronic equipment, therefore, in specific implementation process, the detailed process that obtains described the first audio input signal is: corresponding the 3rd audio input signal of audio file that electronic equipment is play needs is input on the audio power amplifier unit of electronic equipment, described audio power amplifier unit is the amplification processing through certain multiple by described the 3rd audio input signal, and then obtain described the first audio input signal.Audio power amplifier unit in the time that described the 3rd audio input signal is amplified, amplification be the amplitude of described the 3rd audio input signal, thereby the current value of the 3rd audio signal is amplified.
After obtaining the first audio input signal, described method just enters step 102: judge that whether described the first audio input signal meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value;
In specific implementation process, the attribute of audio playing unit has a lot, but wherein most important is exactly temperature property and amplitude attribute, in the time of the excess Temperature of audio playing unit, can cause the resistance of audio playing unit to decline, and then its caloric value can sharply rise, thereby damage this audio playing unit; And the amplitude of working as audio playing unit is too high, be that the displacement of sound film vibration of audio playing unit is when too high, can cause the now displacement of audio playing unit sound film to exceed the maximum magnitude of this audio playing unit sound film displacement design, and then the sound film of audio playing unit cannot be resetted, thereby damage audio playing unit.For example, for loudspeaker, in the time that the amplitude of loudspeaker is too high, just likely cause loudspeaker sound film amplitude to exceed scope of design, cause sound film to touch protecgulum and maybe cannot reset, thereby cause loudspeaker to damage; And in the time of the excess Temperature of loudspeaker, the caloric value of loudspeaker can rise, and will cause the insulating varnish of horn coil to come off, its resistance declines, and then makes again the caloric value of loudspeaker sharply increase, and when temperature exceedes after the tolerance range of loudspeaker, loudspeaker will be damaged.
In specific implementation process, in the time that at least one preset value in step 102 is specially preset temperature value and/or default amplitude, the specific implementation process of step 102 as shown in Figure 2, comprising:
Step 201: based on described the first audio input signal, obtain the first current value of the described audio playing unit corresponding with described the first audio input signal;
Because audio signal is regular sound wave frequency, the changes in amplitude information carrier with voice, music and audio, it is a sound wave constantly changing, and the amplitude size of sound wave is the now size of current of audio signal, therefore, obtaining after described the first audio input signal, just can obtain first current value that output to described audio playing unit corresponding with described the first audio input signal.In specific implementation process, in the time that audio playing unit is loudspeaker, can be by a digital signal processor that is connected to current feedback unit between loudspeaker and audio power amplifier unit the first audio input signal obtaining is fed back to electronic equipment, and then acquisition the first current value, and because the first audio input signal is analog signal, the first audio input signal need to be converted to digital signal could be digital signal processor identification later, therefore, in concrete practical application, current feedback unit is specially an ADC change-over circuit, this change-over circuit can convert the first audio input signal to digital signal, then, again this digital signal is sent to the digital signal processor processes of electronic equipment, and then the first current value of acquisition loudspeaker.
Obtain after the first current value, just enter step 202: the contrast relationship table between the current value based on described audio playing unit and temperature value and/or amplitude, obtains the first temperature value and/or first amplitude of the described audio playing unit corresponding with described the first current value;
In specific implementation process; contrast relationship table between the current value of audio playing unit and temperature value and/or amplitude can be provided by the manufacturer of audio playing unit; also can obtain in laboratory by experiment; because the acquisition pattern of this contrast relationship table is not in the claimed scope of the application; therefore, be not described in detail for the acquisition of this table.
In the time that audio playing unit is loudspeaker, the contrast relationship table between the current value of loudspeaker and temperature value and/or amplitude is as shown in table 1 below:
| Current value | Temperature value | Amplitude |
| 12 | 24 | 6 |
| 13 | 26 | 7 |
| 14 | 28 | 8 |
| 15 | 30 | 9 |
| 16 | 31 | 10 |
The data of above table a kind be only a kind of simple hypothetical for example, technical scheme in the embodiment that this simplification processing is the application for convenience of description, its real contrast relationship table than table 1 complexity many, in specific implementation process, contrast relationship between current value and temperature value and/or amplitude is not the linear relationship of reacting as table 1, but a kind of relation of approximately linear, so, herein the data in table 1 only represent its relative size value of corresponding parameter, do not represent real parametric loudspeaker value, to accurately obtain the parameter contrast relationship in this table, need to be data operation through certain data processing in conjunction with mathematical tool, and could accurately draw according to the characteristic of loudspeaker self, because the acquisition of this parameter value is not in the scope of protection of present invention, therefore, it will not go into details in the acquisition of the application's parameter table of comparisons to these loudspeaker at this.As can be drawn from Table 1, such as, in the time that the first current value obtaining is 12, the first temperature value being obtained by the first current value is 24, and the first amplitude of acquisition is 6; In the time that the first current value obtaining is 13, the first temperature value being obtained by the first current value is 26, and the first amplitude of acquisition is 7; In the time that the first current value obtaining is 14, the first temperature value being obtained by the first current value is 28, and the first amplitude of acquisition is 8; In the time that the first current value obtaining is 15, the first temperature value being obtained by the first current value is 30, and the first amplitude of acquisition is 9; In the time that the first current value obtaining is 16, the first temperature value being obtained by the first current value is 31, and the first amplitude of acquisition is 10.
Obtaining after first temperature value and/or the first amplitude of the corresponding described audio playing unit of the first current value, just enter step 203: judge whether described the first temperature value is greater than described preset temperature value; And/or judge whether described the first amplitude is greater than described default amplitude.
In specific implementation process, described preset temperature value and default amplitude, it should be the threshold value of audio playing unit, and in real practical application, this threshold value is not maximum temperature values and the peak swing value that this audio playing unit can bear, because, if threshold value is directly got the maximum that this audio playing unit can bear, in the time that the temperature value of audio playing unit reaches threshold value, it is maximum, electronic equipment is adjusted audio input signal and is also had an information process with the temperature value that reduces audio playing unit, can expend certain hour, at this moment, if audio playing unit continues to work in maximum to cause the damage of audio playing unit, therefore, threshold value should be to be less than the maximum that audio playing unit can bear.In specific implementation process, generally get that audio playing unit can bear peaked 80% as threshold value, for example, suppose that the maximum temperature values can bear when loudspeaker is 35, desirable 28 is threshold value, i.e. preset temperature value herein; And the peak swing value that loudspeaker can bear is 10, desirable 8 is threshold value, i.e. default amplitude herein.Such as, when the first temperature value obtaining is that 24, the first amplitudes are, because temperature value and amplitude are all in threshold range, can judge that the first temperature value and the first amplitude are not more than described preset value at 6 o'clock; When the first temperature value obtaining is that 26, the first amplitudes are, can judge that the first temperature value and the first amplitude are not more than described preset value at 7 o'clock; Be 8 o'clock when the first temperature value obtaining is 28, the first amplitudes, still can judge that the first temperature value and the first amplitude are not more than described preset value; Be 30 and work as the first temperature value obtaining, the first amplitude is 9, judge the first temperature value and the first amplitude is greater than described preset value, just need to regulate audio input signal in such cases, so that the temperature value of loudspeaker and amplitude are in threshold range; When the first temperature value obtaining is 31, the first amplitude is 10 o'clock, judge the first temperature value and the first amplitude is greater than described preset value, just need to regulate audio input signal in such cases, so that the temperature value of loudspeaker and amplitude are in threshold range.
Whether described the first audio input signal is met one pre-conditioned judge after, the method of the embodiment of the present application enters step 103: do not meet described when pre-conditioned at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, wherein, described the second audio input signal meets described pre-conditioned;
And in specific implementation process, in the time that described at least one property value is specially temperature value, the specific implementation process of step 103 as shown in Figure 3, comprising:
Step 301: obtain first of described audio playing unit and stablize audio input signal, described first to stablize audio input signal be temperature value when described audio playing unit corresponding audio input signal during in described preset temperature value;
In specific implementation process, in the time that audio playing unit is loudspeaker, contrast relationship table between the current value of loudspeaker and temperature value and/or amplitude is as shown in table 1, the preset temperature value of loudspeaker is 28, default amplitude is 8, therefore, be 30 and work as the first temperature value obtaining, the first amplitude is 9 o'clock, judge that the first temperature value and the first amplitude are greater than described preset value, now, just show that described the first audio input signal does not meet described pre-conditioned, in such cases, just need to regulate the first audio input signal, from table 1, can learn, what now obtain first stablizes audio input signal to be current value is 18 o'clock corresponding audio input signals, be 31 and work as the first temperature value obtaining, the first amplitude is 10 o'clock, judge that the first temperature value and the first amplitude are greater than described preset value, now, just show that described the first audio input signal does not meet described pre-conditioned, in such cases, also need the first audio input signal to regulate, and now obtain first stablize input signal still for current value is 18 o'clock corresponding audio input signals.
Obtain first stablize audio input signal after, just enter step 302: stablize audio input signal based on described first, generate the second adjustment instruction that is used for adjusting described the first audio input signal.
Stablize after audio input signal obtaining first, electronic equipment can generate the second adjustment instruction, and this instruction is used for adjusting the first audio input signal, so that the temperature value of audio playing unit is within the scope of temperature threshold
Generating after the second adjustment instruction, enter step 303: carry out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described first current value of stablizing the corresponding described audio playing unit of audio input signal.Electronic equipment is carried out second and is adjusted after instruction, the first audio input signal can become the second audio input signal, and the current value of the corresponding audio playing unit of flowing through of this second audio input signal can be less than the first current value of stablizing the corresponding audio playing unit of flowing through of audio input signal, such as, in the time that audio playing unit is loudspeaker, as can be drawn from Table 1, the current value of second audio input signal corresponding the flow through loudspeaker of loudspeaker after adjusting should be below 18.
In specific implementation process, the second audio signal through electronic equipment adjustment remains the audio signal being input on audio playing unit, this audio signal is in theory after electronic equipment audio power amplifier unit amplifies, therefore, in real practical application, in the time adjusting the first audio input signal to the second audio input signal, need to pass through certain computing, the second audio input signal is reduced into the audio input signal before audio power amplifier unit amplifies.
In specific implementation process, in the time that at least one property value of described audio playing unit is specially amplitude, the specific implementation process of step 103 as shown in Figure 4, comprising:
Step 401: obtain second of described audio playing unit and stablize audio input signal, described second to stablize audio input signal be amplitude when described audio playing unit corresponding audio input signal during at described default amplitude;
In specific implementation process, in the time that audio playing unit is loudspeaker, contrast relationship table between the current value of loudspeaker and temperature value and/or amplitude is as shown in table 1, the preset temperature value of loudspeaker is 28, default amplitude is 8, therefore, be 30 and work as the first temperature value obtaining, the first amplitude is 9 o'clock, judge that the first temperature value and the first amplitude are greater than described preset value, now, just show that described the first audio input signal does not meet described pre-conditioned, in such cases, just need to regulate the first audio input signal, from table 1, can learn, what now obtain second stablizes audio input signal to be current value is 18 o'clock corresponding audio input signals, be 31 and work as the first temperature value obtaining, the first amplitude is 10 o'clock, judge that the first temperature value and the first amplitude are greater than described preset value, now, just show that described the first audio input signal does not meet described pre-conditioned, in such cases, also need the first audio input signal to regulate, and now obtain second stablize input signal still for current value is 18 o'clock corresponding audio input signals.
Obtain second stablize audio input signal after, enter step 402: stablize audio input signal based on described second, generate the second adjustment instruction that is used for adjusting described the first audio input signal;
Stablize after audio input signal obtaining second, electronic equipment can generate the second adjustment instruction, and this instruction is used for adjusting the first audio input signal, so that the amplitude of audio playing unit is within the scope of amplitude threshold.
Generating after the second adjustment instruction, enter step 403: carry out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described second current value of stablizing the corresponding described audio playing unit of audio input signal.Electronic equipment is carried out second and is adjusted after instruction, the first audio input signal can become the second audio input signal, and the current value of the corresponding audio playing unit of flowing through of this second audio input signal can be less than the second current value of stablizing the corresponding audio playing unit of flowing through of audio input signal, such as, in the time that audio playing unit is loudspeaker, as can be drawn from Table 1, the current value of second audio input signal corresponding the flow through loudspeaker of loudspeaker after adjusting should be below 18.
In specific implementation process, the second audio signal through electronic equipment adjustment remains the audio signal being input on audio playing unit, this audio signal is in theory after electronic equipment audio power amplifier unit amplifies, therefore, in real practical application, in the time adjusting the first audio input signal to the second audio input signal, need to pass through certain computing, the second audio input signal is reduced into the audio input signal before audio power amplifier unit amplifies.
In table 1, it is the identical current value of having supposed the temperature threshold of audio playing unit and amplitude threshold correspondence, and in specific implementation process, both corresponding current values generally can be not identical, therefore, in order to guarantee the safety of audio playing unit, as long as when a parameter value in temperature value or amplitude exceeds threshold range, the audio input signal of all tackling audio playing unit regulates.
After obtaining described the second audio input signal, the method for the embodiment of the present application enters step 104: export described the second audio input signal to described audio playing unit.The temperature value and/or the amplitude that pass through the corresponding audio playing unit of current value of the second audio input signal of adjusting and being input to audio playing unit all should be in the safe rangies that this audio playing unit can bear.
Accordingly, based on same inventive concept, the embodiment of the present application provides output intent a kind of and described audio signal corresponding electronic equipment, and this electronic equipment has an audio playing unit, and the concrete structure figure of described electronic equipment as shown in Figure 5, comprising:
Obtain unit 501, for obtaining the first audio input signal;
Judging unit 502, be connected with described acquisition unit 501, be used for judging that whether described the first audio input signal meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value;
In specific implementation process, the course of work of described electronic equipment is specially: the first audio input signal that acquisition unit 501 obtains can output on audio playing unit by output unit 504, between acquisition unit 501 and output unit 504, there is a judging unit 502, this judging unit 502 is input to the first audio input signal of audio playing unit for Real-Time Monitoring, judging unit 502 can obtain first current value corresponding with the first audio input signal based on the first audio input signal, judge again whether the temperature value of the corresponding audio playing unit of this first current value and/or amplitude exceed the maximum tolerance range of audio playing unit, when exceeding after maximum tolerance range, judged result is sent to adjustment unit 503, adjustment unit 503 can send adjustment instruction, make to be input to the first audio input signal obtaining on unit 501 and become the second audio input signal, the parameter such as temperature and/or amplitude of the corresponding audio playing unit of this second audio input signal is in the safe tolerance range of audio playing unit.After adjustment completes, output unit 504 outputs to the second audio input signal after adjusting on audio playing unit again.
In specific implementation process, the first audio input signal is generally audio signal after treatment, and therefore, the acquisition unit 501 that obtains described the first audio input signal specifically comprises again:
First obtains unit, for obtaining the 3rd audio input signal;
Audio power amplifier unit, is connected with described the first acquisition unit, processes for described the 3rd audio input signal is done to amplify through an audio power amplifier unit, obtains described the first audio input signal.
In concrete practical application; the first acquisition unit can be an audio decoder; the audio signal that needs are play obtains the 3rd audio input signal after decoding; the embodiment of the present application does not limit the scope of the first acquisition unit, and every device that can obtain audio signal all should be in the claimed scope of the application.And for the 3rd audio signal can be play on audio playing unit, need to be according to the drive current size of audio playing unit, the 3rd audio signal is amplified to processing, so that the audio signal after amplifying can reach the drive current of audio playing unit, and then drive audio playing unit sounding.
In specific implementation process, in the time that described at least one preset value is specially preset temperature value and/or default amplitude, described judging unit 502 as shown in Figure 6, specifically comprises:
Second obtains unit 5021, for based on described the first audio input signal, obtains the first current value of the described audio playing unit corresponding with described the first audio input signal;
In specific implementation process, the second acquisition unit can, for having the computing chip of data processing function, can be also a current feedback unit, can from the first audio input signal, obtain corresponding the first current value of the first audio input signal.Equally, the embodiment of the present application does not limit the second acquisition unit yet, as long as the device that can obtain the current value corresponding with this audio signal from audio signal all should be in the claimed scope of the application.
The 3rd obtains unit 5022, be connected with described the second acquisition unit 5021, for the contrast relationship table between current value and temperature value and/or amplitude based on described audio playing unit, obtain the first temperature value and/or first amplitude of the described audio playing unit corresponding with described the first current value;
The first judging unit 5023, is connected with described the 3rd acquisition unit 5022, for judging whether described the first temperature value is greater than described preset temperature value; And/or judge whether described the first amplitude is greater than described default amplitude.
In specific implementation process, the 3rd acquisition unit 5022 and the first judging unit 5023 can be a DSP digital signal processor jointly, in this digital signal processor, store the contrast relationship table between current value and temperature value and/or the amplitude of described audio playing unit, as the threshold value of the temperature value of table 1 and audio playing unit and amplitude is stored in this digital signal processor, obtaining after the first current value of the described audio playing unit that the second acquisition unit 5021 obtains, digital signal processor can compare the data in the contrast relationship table between the current value of this first current value and audio playing unit and temperature value and/or amplitude, obtain first temperature value and/or first amplitude corresponding with the first current value, again the temperature value of this audio playing unit of this first temperature value and/or the first amplitude and storage and the threshold value of amplitude are compared, and then judge the first temperature value and whether be greater than described preset temperature value, and/or judge whether described the first amplitude is greater than described default amplitude.For example, when audio playing unit is loudspeaker, contrast relationship table between the current value of these loudspeaker and temperature value and/or amplitude is as shown in table 1, and the threshold value of this loudspeaker temperature value is 28, the threshold value of amplitude is 8, and the first temperature value obtaining when digital signal processor is that 24, the first amplitudes are 6 o'clock, because temperature value and amplitude are all in threshold range, digital signal processor judges that the first temperature value and the first amplitude are not more than described preset value; The first temperature value obtaining when digital signal processor is that 26, the first amplitudes are 7 o'clock, and digital signal processor judges that the first temperature value and the first amplitude are not more than described preset value; Be 8 o'clock when the first temperature value of digital signal processor acquisition is 28, the first amplitudes, digital signal processor still can judge that the first temperature value and the first amplitude are not more than described preset value; And the first temperature value obtaining when digital signal processor is 30, the first amplitude is 9, digital signal processor is judged the first temperature value and the first amplitude is greater than described preset value, just need to regulate audio input signal in such cases, so that the temperature value of loudspeaker and amplitude are in threshold range; The first temperature value obtaining when digital signal processor is 31, the first amplitude is 10 o'clock, digital signal processor judges that the first temperature value and the first amplitude are greater than described preset value, also need in such cases audio input signal to regulate, so that the temperature value of loudspeaker and amplitude are in threshold range.
In specific implementation process, in the time that described at least one property value is specially temperature value, described adjustment unit 503 as shown in Figure 7, specifically comprises:
The 4th obtains unit 5031, stablizes audio input signal for obtaining first of described audio playing unit, and described first to stablize audio input signal be temperature value when described audio playing unit corresponding audio input signal during in described preset temperature value;
The first instruction generation unit 5032, obtains unit 5031 and is connected with the described the 4th, for stablize audio input signal based on described first, generates the second adjustment instruction for adjusting described the first audio input signal;
The first instruction execution unit 5033, be connected with described the first instruction generation unit 5032, be used for carrying out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described first current value of stablizing the corresponding described audio playing unit of audio input signal.
In specific implementation process, in the time that at least one property value of described audio playing unit is specially amplitude, described adjustment unit 503 as shown in Figure 8, specifically comprises:
The 5th obtains unit 5031-, stablizes audio input signal for obtaining second of described audio playing unit, and described second to stablize audio input signal be amplitude when described audio playing unit corresponding audio input signal during at described default amplitude;
The second instruction generation unit 5032-, obtains unit and is connected with the described the 5th, for stablize audio input signal based on described second, generates the second adjustment instruction that is used for adjusting described the first audio input signal;
The second instruction execution unit 5033-, be connected with described the second instruction generation unit, be used for carrying out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described second current value of stablizing the corresponding described audio playing unit of audio input signal.
In specific implementation process, the actual same device that can be of Fig. 7 and Fig. 8, in the 4th contrast relationship table obtaining between current value and temperature value and/or the amplitude of unit 5031 and the 5th audio playing unit that can store from above-mentioned digital signal processor of acquisition unit 5031-, obtaining first stablizes audio input signal and second and stablizes audio input signal, for example, when audio playing unit is loudspeaker, contrast relationship table between the current value of loudspeaker and temperature value and/or amplitude is as shown in table 1, the temperature threshold of loudspeaker is 28, amplitude threshold is 8 o'clock, what obtain first stablizes audio input signal and second to stablize audio input signal is that current value is 18 o'clock corresponding audio input signals.And the first instruction generation unit 5032, the second instruction generation unit 5032-can be same apparatus, everyly can stablize audio input signal and second according to first and stablize audio input signal and generate device for adjusting the first audio input signal all in the scope of the application's protection.The first instruction execution unit 5033, the second instruction execution unit 5033-, both can be same apparatus equally, and every can execution adjusted instruction, and the device that the first audio input signal is adjusted to the second audio input signal is all in the scope of the application's protection.
Above for the scope that is not limited to for example this device of device, every can substitute lifted device and can complete the device of the function that this device has all should be in the claimed scope of the application.
By the one or more technical schemes in the embodiment of the present application, can be achieved as follows technique effect:
Owing to having adopted the service condition of the audio playing unit obtaining according to electronic equipment automatically to regulate the audio input signal of electronic equipment, regulate the property value such as amplitude and/or temperature of audio playing unit to the technological means within the scope of the security attribute value of audio playing unit to reach, solve the audio input signal that can not automatically regulate according to the service condition of audio playing unit electronic equipment existing in prior art, so that the technical problem in the safe range that the property value such as amplitude and/or temperature of audio playing unit can bear at audio playing unit.Thereby; there is the audio input signal that can automatically regulate according to the service condition of audio playing unit electronic equipment; so that the attribute such as amplitude and/or temperature of audio playing unit is in the safe range of audio playing unit, to protect the not impaired technique effect of described audio playing unit.
Method of the present invention is not limited to the embodiment described in embodiment, and those skilled in the art's technical scheme according to the present invention draws other execution mode, belongs to equally technological innovation scope of the present invention.Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. an output intent for audio signal, is applied to one and has in the electronic equipment of audio playing unit, it is characterized in that, described method comprises:
Obtain the first audio input signal;
Judge that whether described the first audio input signal meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value;
Do not meet describedly when pre-conditioned at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, wherein, described the second audio input signal meets described pre-conditioned;
Export described the second audio input signal to described audio playing unit.
2. the method for claim 1, is characterized in that, the concrete steps of described acquisition the first audio input signal comprise:
Obtain the 3rd audio input signal;
Described the 3rd audio input signal is done to amplify through an audio power amplifier unit and process, obtain described the first audio input signal.
3. method as claimed in claim 2, is characterized in that, in the time that described at least one preset value is specially preset temperature value and/or default amplitude, described to judge that whether described the first audio input signal meets one pre-conditioned, specifically comprises:
Based on described the first audio input signal, obtain the first current value of the described audio playing unit corresponding with described the first audio input signal;
Contrast relationship table between current value based on described audio playing unit and temperature value and/or amplitude, obtains the first temperature value and/or first amplitude of the described audio playing unit corresponding with described the first current value;
Judge whether described the first temperature value is greater than described preset temperature value; And/or judge whether described the first amplitude is greater than described default amplitude.
4. method as claimed in claim 3, is characterized in that, in the time that described at least one property value is specially temperature value, described do not meet at described the first audio input signal described when pre-conditioned, adjust described the first audio input signal, obtain the second audio input signal, specifically comprise:
Obtain first of described audio playing unit and stablize audio input signal, described first to stablize audio input signal be temperature value when described audio playing unit corresponding audio input signal during in described preset temperature value;
Stablize audio input signal based on described first, generate for adjusting second of described the first audio input signal and adjust instruction;
Carry out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described first current value of stablizing the corresponding described audio playing unit of audio input signal.
5. method as claimed in claim 3, it is characterized in that, in the time that at least one property value of described audio playing unit is specially amplitude, described do not meet at described the first audio input signal described when pre-conditioned, adjust described the first audio input signal, obtain the second audio input signal, specifically comprise:
Obtain second of described audio playing unit and stablize audio input signal, described second to stablize audio input signal be amplitude when described audio playing unit corresponding audio input signal during at described default amplitude;
Stablize audio input signal based on described second, generate for adjusting second of described the first audio input signal and adjust instruction;
Carry out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described second current value of stablizing the corresponding described audio playing unit of audio input signal.
6. an electronic equipment, described electronic equipment has an audio playing unit, it is characterized in that, and described electronic equipment comprises:
Obtain unit, for obtaining the first audio input signal;
Judging unit, be connected with described acquisition unit, be used for judging that whether described the first audio input signal meets one pre-conditioned, wherein, described pre-conditioned for for judging that audio input signal is input to after described audio playing unit, can at least one attribute of described audio playing unit meet the condition of at least one preset value;
Adjustment unit, be connected with described judging unit, described acquisition unit respectively, described when pre-conditioned for not meeting at described the first audio input signal, adjust described the first audio input signal, obtain the second audio input signal, wherein, described the second audio input signal meets described pre-conditioned;
Output unit, is connected with described acquisition unit, for exporting described the second audio input signal to described audio playing unit.
7. electronic equipment as claimed in claim 6, is characterized in that, described acquisition unit specifically comprises:
First obtains unit, for obtaining the 3rd audio input signal;
Audio power amplifier unit, is connected with described the first acquisition unit, processes for described the 3rd audio input signal is done to amplify through an audio power amplifier unit, obtains described the first audio input signal.
8. electronic equipment as claimed in claim 7, is characterized in that, in the time that described at least one preset value is specially preset temperature value and/or default amplitude, described judging unit specifically comprises:
Second obtains unit, for based on described the first audio input signal, obtains the first current value of the described audio playing unit corresponding with described the first audio input signal;
The 3rd obtains unit, be connected with described the second acquisition unit, for the contrast relationship table between current value and temperature value and/or amplitude based on described audio playing unit, obtain the first temperature value and/or first amplitude of the described audio playing unit corresponding with described the first current value;
The first judging unit, is connected with described the 3rd acquisition unit, for judging whether described the first temperature value is greater than described preset temperature value; And/or judge whether described the first amplitude is greater than described default amplitude.
9. electronic equipment as claimed in claim 8, is characterized in that, in the time that described at least one property value is specially temperature value, described adjustment unit specifically comprises:
The 4th obtains unit, stablizes audio input signal for obtaining first of described audio playing unit, and described first to stablize audio input signal be temperature value when described audio playing unit corresponding audio input signal during in described preset temperature value;
The first instruction generation unit, obtains unit and is connected with the described the 4th, for stablize audio input signal based on described first, generates the second adjustment instruction that is used for adjusting described the first audio input signal;
The first instruction execution unit, be connected with described the first instruction generation unit, be used for carrying out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described first current value of stablizing the corresponding described audio playing unit of audio input signal.
10. electronic equipment as claimed in claim 8, is characterized in that, in the time that at least one property value of described audio playing unit is specially amplitude, described adjustment unit specifically comprises:
The 5th obtains unit, stablizes audio input signal for obtaining second of described audio playing unit, and described second to stablize audio input signal be amplitude when described audio playing unit corresponding audio input signal during at described default amplitude;
The second instruction generation unit, obtains unit and is connected with the described the 5th, for stablize audio input signal based on described second, generates the second adjustment instruction that is used for adjusting described the first audio input signal;
The second instruction execution unit, be connected with described the second instruction generation unit, be used for carrying out described second and adjust instruction, described the first audio input signal is adjusted into described the second audio input signal, wherein, the current value of the corresponding described audio playing unit of described the second audio input signal is lower than the described second current value of stablizing the corresponding described audio playing unit of audio input signal.
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| CN201210472440.8A CN103841492A (en) | 2012-11-20 | 2012-11-20 | Output method of audio signal and apparatus |
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