CN107681993A - A kind of method and mobile terminal for adjusting audio frequency parameter - Google Patents
A kind of method and mobile terminal for adjusting audio frequency parameter Download PDFInfo
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Abstract
The present invention provides a kind of method and mobile terminal for adjusting audio frequency parameter, and this method includes：Detect the dump energy of the mobile terminal；According to the size of the dump energy, the frequency filtering and filtering gain of the audio high pass filter are adjusted, and the gain to the MBDRC modules is adjusted, wherein, frequency filtering after the audio high pass filter adjustment is higher than the frequency filtering before adjustment, the filtering gain of the audio high pass filter is lower than the filtering gain before adjustment, the high gain before the ratio of gains adjustment of the MBDRC modules；Processing is filtered to target audio signal using the audio high pass filter after adjustment, and dynamic range control is carried out to the target audio signal using the MBDRC modules after adjustment.So, mobile terminal can be caused to carry out power saving when audio plays and be not required to reduce volume, so as to reduce the influence of the audio result of broadcast caused by power saving to mobile terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for adjusting an audio parameter and a mobile terminal.
Background
With the rapid development of mobile terminals, mobile terminals have become an indispensable tool in people's lives, and the rich functions of mobile terminals bring great convenience to various aspects of users' lives. The audio playing function is one of the most commonly used functions of a large number of users, and is active in various scenes of life, for example, playing music, watching video, playing games, conducting voice or video chat and other scenes by using a mobile terminal, and the audio playing function is almost required to be utilized. However, the battery capacity of the battery of the conventional mobile terminal is generally small, so that the electric quantity of the battery is difficult to maintain in a long-time audio playing state. Therefore, in order to obtain a longer usage time in the audio playing state, the user only needs to reduce the volume of the mobile terminal to save power, and at this time, the audio playing effect of the mobile terminal is reduced due to the reduction of the volume. Therefore, in order to save power during audio playing, the volume of the conventional mobile terminal needs to be reduced, which results in poor audio playing effect of the mobile terminal.
Disclosure of Invention
The embodiment of the invention provides a method for adjusting audio parameters and a mobile terminal, and aims to solve the problem that the audio playing effect of the mobile terminal is poor due to the fact that the volume needs to be reduced if power needs to be saved during audio playing of the mobile terminal.
In a first aspect, an embodiment of the present invention provides a method for adjusting an audio parameter, including:
detecting the residual electric quantity of the mobile terminal;
according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of a Multi-Band Dynamic Range Control (MBDRC) module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted;
and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
In a second aspect, an embodiment of the present invention further provides a mobile terminal, including:
the detection module is used for detecting the residual electric quantity of the mobile terminal;
the adjusting module is used for adjusting the filtering frequency and the filtering gain of the audio high-pass filter and adjusting the gain of the MBDRC module according to the size of the residual electric quantity, wherein the filtering frequency after the adjustment of the audio high-pass filter is higher than the filtering frequency before the adjustment, the filtering gain of the audio high-pass filter is lower than the filtering gain before the adjustment, and the gain of the MBDRC module is higher than the gain before the adjustment;
and the processing module is used for performing filtering processing on the target audio signal by using the adjusted audio high-pass filter and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
In a third aspect, an embodiment of the present invention further provides a mobile terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method of adjusting audio parameters described above when executing the computer program.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps in the method for adjusting audio parameters.
In the embodiment of the invention, the residual electric quantity of the mobile terminal is detected; according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted; and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module. In this way, the power consumption of the mobile terminal can be reduced by filtering the target audio signal by using the adjusted audio high-pass filter, and the sound pressure level of the audio signal output by the mobile terminal can be improved by controlling the dynamic range of the target audio signal by using the adjusted MBDRC module; therefore, when the mobile terminal plays the audio, the power is saved without reducing the volume, and the influence on the audio playing effect of the mobile terminal caused by the power saving is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of a method for adjusting audio parameters according to an embodiment of the present invention;
FIG. 2 is a graph of the amplitude-frequency characteristic of an audio high-pass filter according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for adjusting audio parameters according to an embodiment of the present invention;
fig. 4 is a graph of the gain characteristics of the MBDRC module provided by an embodiment of the invention;
FIG. 5 is another amplitude-frequency characteristic diagram of an audio high-pass filter provided by an embodiment of the invention;
fig. 6 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 7 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 8 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 9 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 10 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 11 is a block diagram of another mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for adjusting audio parameters according to an embodiment of the present invention, as shown in fig. 1, including the following steps:
step 101, detecting the residual electric quantity of the mobile terminal.
The remaining capacity is understood to mean the ratio of the available capacity in the battery to the nominal capacity.
Step 102, according to the size of the remaining power, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the adjustment of the audio high-pass filter is higher than the filtering frequency before the adjustment, the filtering gain of the audio high-pass filter is lower than the filtering gain before the adjustment, and the gain of the MBDRC module is higher than the gain before the adjustment.
It should be noted that, firstly, the audio high-pass filter may be understood as one of a plurality of filters constituting an (EQ) equalizer, where the filtering frequency may also refer to a filtering frequency point, as shown in fig. 2, after the filtering frequency, that is, the filtering frequency point and the filtering gain, are set, signals corresponding to a frequency point before the point are attenuated, that is, signals smaller than the filtering frequency are attenuated, only signals with a frequency higher than the frequency point can pass through, that is, signals larger than the filtering frequency are not affected; the filter gain is understood to be the maximum value attenuated by the signal below the above-mentioned filter frequency; it should be noted that the higher the filtering frequency, the greater the filtering gain, and the higher the degree of signal attenuation for frequencies less than the filtering frequency.
It should be noted that the signal having a frequency lower than the filtering frequency is a low-frequency signal, and the low-frequency signal generally has a small influence on the sound pressure level of the target audio signal and a large influence on the audibility of the target audio signal, and when the low-frequency signal is attenuated by the audio high-pass filter, the influence on the sound pressure level is small, so that only a part of the sound pressure level is reduced, and the audibility of the output audio signal is mainly reduced, but the power consumption required for a large amount of low-frequency signals can be reduced; since attenuating low frequency signals is accompanied by a drop in sound pressure level, the dropped sound pressure level needs to be boosted back again; by increasing the gain of the MBDRC module, the sound pressure level can be correspondingly increased, as long as the increased sound pressure level is ensured to be the same as the sound pressure level reduced by attenuating the low-frequency signal, and the power consumption required for increasing the gain of the MBDRC module is ensured to be smaller than the power consumption reduced by attenuating the low-frequency signal.
Step 103, filtering the target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
It should be noted that, the filtering process mainly refers to performing attenuation processing on the target audio signal; it should be further noted that the dynamic range may be understood as a ratio of a large signal to a small signal in an audio signal, where the large signal refers to an audio signal larger than a certain amplitude, the small signal refers to an audio signal smaller than the certain amplitude, and the dynamic range control refers to performing corresponding adjustment processing on the amplitude of the large signal or the small signal. It should be noted that in this example, the process of filtering the target audio signal by using the adjusted audio high-pass filter is performed first, and then the process of performing dynamic range control on the target audio signal by using the adjusted MBDRC module is performed. It should be added that, in addition to being applied to a scene in which a speaker is driven to play, the present embodiment may also drive an audio output device such as an earphone, a bluetooth earphone, a stereo, and a bluetooth stereo to output an audio signal.
In the embodiment of the present invention, the Mobile terminal may be a Mobile phone, a Tablet personal Computer (Tablet personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.
In the embodiment of the invention, the residual electric quantity of the mobile terminal is detected; according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted; and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module. In this way, the power consumption of the mobile terminal can be reduced by filtering the target audio signal by using the adjusted audio high-pass filter, and the sound pressure level of the audio signal output by the mobile terminal can be improved by controlling the dynamic range of the target audio signal by using the adjusted MBDRC module; therefore, when the mobile terminal plays the audio, the power is saved without reducing the volume, and the influence on the audio playing effect of the mobile terminal caused by the power saving is reduced.
Referring to fig. 3, fig. 3 is a flowchart of another method for adjusting audio parameters according to an embodiment of the present invention. The main difference between this embodiment and the previous embodiment is that the method adds a charging state determination mechanism after the adjusted audio high-pass filter is used to perform filtering processing on the target audio signal and the adjusted MBDRC module is used to perform dynamic range control on the target audio signal. As shown in fig. 3, the method comprises the following steps:
step 301, detecting the residual electric quantity of the mobile terminal;
the remaining capacity is understood to mean the ratio of the available capacity in the battery to the nominal capacity.
Step 302, according to the size of the remaining power, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the adjustment of the audio high-pass filter is higher than the filtering frequency before the adjustment, the filtering gain of the audio high-pass filter is lower than the filtering gain before the adjustment, and the gain of the MBDRC module is higher than the gain before the adjustment.
The power consumption required by a large amount of low-frequency signals can be reduced if the signals are attenuated by the audio high-pass filter; since attenuating low frequency signals is accompanied by a drop in sound pressure level, the dropped sound pressure level needs to be boosted back again; by increasing the gain of the MBDRC module, the sound pressure level can be correspondingly increased, as long as the increased sound pressure level is ensured to be the same as the sound pressure level reduced by attenuating the low-frequency signal, and the power consumption required for increasing the gain of the MBDRC module is ensured to be smaller than the power consumption reduced by attenuating the low-frequency signal. Other required descriptions are detailed in the previous embodiment and are not repeated herein.
Optionally, the step of adjusting the filtering frequency and the filtering gain of the audio high-pass filter and the gain of the MBDRC module according to the size of the remaining power includes:
if the residual electric quantity is smaller than a preset threshold value, adjusting the filtering frequency of an audio high-pass filter to a first preset frequency, adjusting the filtering gain of the audio high-pass filter to a first preset gain, and adjusting the gain of an MBDRC module to a second preset gain, wherein the first preset frequency is higher than the filtering frequency of the audio high-pass filter before adjustment, the first preset gain is lower than the filtering gain of the audio high-pass filter before adjustment, and the second preset gain is higher than the gain of the MBDRC module before adjustment.
It should be noted that, when it is detected that the remaining power is less than the preset threshold, the mobile terminal may automatically adjust the filtering gain, the filtering frequency, and the gain of the MBDRC module, or may also output visual information or voice information to prompt the user to manually adjust the filtering gain, the filtering frequency, and the gain. For example, the preset threshold is set to be 50% by the user, and when the mobile terminal detects that the remaining power is less than 50%, the mobile terminal may automatically adjust the filtering gain, the filtering frequency, and the gain of the MBDRC module to corresponding values, or may prompt the user to manually adjust the related audio parameters, that is, the filtering gain of the audio high-pass filter, the filtering frequency point of the audio high-pass filter, and the gain of the MBDRC module, by outputting a text message on a mobile phone screen.
In addition, the user needs to set a preset threshold in advance, usually in percentage of the remaining power. In addition, in order to improve the power saving efficiency, a plurality of thresholds can be set, so that more effective power saving is realized. For example, the preset threshold may include a first preset threshold, a second preset threshold, a third preset threshold and a fourth preset threshold, where the magnitudes of the first preset threshold, the second preset threshold, the third preset threshold and the fourth preset threshold decrease progressively in sequence, that is, the first preset threshold > the second preset threshold > the third preset threshold > the fourth preset threshold; for example: the first preset threshold value is 60%, the second preset threshold value is 45%, the third preset threshold value is 35%, and the fourth preset threshold value is 20%.
It should be noted that the values of the filter gain, the filter frequency, and the gain of the MBDRC module may be preset and reserved by a manufacturer for storage in the mobile terminal, that is, the values of the first preset frequency, the first preset gain, and the second preset gain may be preset and reserved in advance, for example, the manufacturer sets the first preset frequency as a after debugging, sets the first preset gain as B, sets the second preset gain as C, sets the first preset gain as a first set of power saving parameters for storage in the mobile terminal, and only needs to directly call when the user needs to use, or sets the first preset frequency as D, sets the first preset gain as E, sets the second preset gain as F, and stores the second set of power saving parameters in the mobile terminal, that is, multiple sets of parameters may be stored for flexible call.
Of course, the user can also set relevant audio parameters such as the filter gain, the filter frequency point, the gain of the MBDRC module and the like in advance according to the needs and experience of the user, and the relevant audio parameters can be called when the audio parameters are needed. It should be noted that the manufacturer or the user may also set a set of normal parameters in advance, i.e. audio parameters when the mobile terminal is in the audio playing state and power saving is not needed.
In this way, in this embodiment, the filter frequency, the filter gain, and the gain of the MBDRC module are set in advance by the manufacturer or the user, and power saving can be performed more conveniently.
Optionally, the step of adjusting the filtering frequency and the filtering gain of the audio high-pass filter and the gain of the MBDRC module according to the size of the remaining power includes:
determining a filtering frequency and a filtering gain corresponding to the detected residual electric quantity according to a first preset relation among the residual electric quantity, the filtering frequency of the audio high-pass filter and the filtering gain of the audio high-pass filter;
adjusting the filtering frequency of the audio high-pass filter to be the filtering frequency corresponding to the detected residual electric quantity, and adjusting the filtering gain of the audio high-pass filter to be the filtering frequency corresponding to the detected residual electric quantity, wherein the filtering frequency corresponding to the detected residual electric quantity is higher than the filtering frequency before the audio high-pass filter is adjusted, and the filtering gain corresponding to the detected residual electric quantity is lower than the filtering gain before the audio high-pass filter is adjusted;
determining the gain of the MBDRC module corresponding to the detected residual electric quantity according to a second preset relation between the residual electric quantity and the gain of the MBDRC module;
adjusting the gain of the MBDRC module to the gain of the MBDRC module corresponding to the determined detected residual electric quantity, wherein the gain of the MBDRC module corresponding to the determined detected residual electric quantity is higher than the gain of the MBDRC module before adjustment.
In this embodiment, it should be noted that, if the audio parameter is adjusted as long as the audio parameter is lower than the preset threshold, the audio parameter may be suddenly changed, and therefore, the sound heard by the user may also be suddenly changed, so that it is difficult for the user to adapt to the change. For example, the first preset relationship may be established as shown in fig. 5, wherein the lower the remaining power is, the higher the filtering frequency of the audio high-pass filter is, and the higher the filtering gain is, and the filtering frequency corresponding to 110% of the remaining power is recommended to be set to be 200 hz. In addition, in the second preset relationship, the MBDRC gain corresponding to 110% of the remaining power is recommended to be set to 0dB, that is, the MBDRC module is not effective at this time, and the amplitude of the small signal is not increased, and the current remaining power is decreased, the gain of the corresponding MBDRC module is gradually increased, and the amplitude of the small signal is also gradually increased, that is, the lower the remaining power is, the more the amplitude of the small signal is increased.
Thus, the embodiment establishes the mapping relationship between the remaining power and the power saving parameters, i.e. the filtering frequency, the filtering gain and the gain of the MBDRC module, and adopts a natural transition mode of dynamic adjustment, so that the sound does not suddenly change any more, but slowly and gradually changes, and the user cannot feel the change.
Step 303, performing filtering processing on the target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
It should be noted that, the filtering process mainly refers to performing attenuation processing on the target audio signal; it should be further noted that the dynamic range may be understood as a ratio of a large signal to a small signal in an audio signal, where the large signal refers to an audio signal larger than a certain amplitude, the small signal refers to an audio signal smaller than the certain amplitude, and the dynamic range control refers to performing corresponding adjustment processing on the amplitude of the large signal or the small signal. It should be noted that in this example, the process of filtering the target audio signal by using the adjusted audio high-pass filter is performed first, and then the process of performing dynamic range control on the target audio signal by using the adjusted MBDRC module is performed.
Optionally, the step of performing filtering processing on the target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module includes:
performing attenuation processing on a signal which is smaller than the first preset frequency in the target audio signal by using the adjusted audio high-pass filter;
and amplifying the signals smaller than the preset amplitude in the target audio signal by using the adjusted MBDRC module.
In this embodiment, it should be noted that the filtering frequency may be set to 0, and the first preset frequency is generally referred to as a low frequency and may be understood as a signal below 2 khz; the signal with the preset amplitude mainly refers to a signal with a small amplitude in a dynamic range, namely a small signal generally referred to, and due to the fact that the electroacoustic conversion efficiency of the small signal is high, more sound pressure can be obtained with less electric quantity by improving the amplitude of the small signal; when the signal is large, the electro-acoustic conversion efficiency of the speaker, the earphone or other audio output device is reduced. Therefore, after the amplitude of the small signal is increased through the MBDRC module, more sound pressure increment can be obtained. Therefore, as shown in fig. 4, the amplitude of the small signal is mainly increased, and the amplitude of the large signal is maintained to reduce the dynamic range of the audio signal.
In this way, in this embodiment, after the amplitude of the small signal is increased by the MBDRC module, a larger sound pressure increase can be obtained, and thus a larger sound pressure can be obtained with a smaller amount of power.
It should be noted that step 304 is optional.
Step 304, if it is detected that the mobile terminal is in a charging state, adjusting the filtering frequency of the audio high-pass filter to a second preset frequency, adjusting the filtering gain of the audio high-pass filter to a third preset gain, and adjusting the gain of the MBDRC module to a fourth preset gain.
It should be noted that, when the mobile terminal is in the charging state, it usually means that power saving is no longer needed, so the audio parameters can be restored to default parameters, that is, the second preset frequency, the third preset gain, and the fourth preset gain can be understood as normal audio parameters reserved in advance by a manufacturer or a user. Therefore, unnecessary power consumption of the mobile terminal can be reduced, and a better audio playing effect can be recovered.
Optionally, after the steps of performing filtering processing on the target audio signal by using the adjusted audio high-pass filter and performing dynamic range control on the target audio signal by using the adjusted MBDRC module, the method further includes:
if the detected residual electric quantity is larger than a preset threshold value, adjusting the filtering frequency of the audio high-pass filter to be a second preset frequency, adjusting the filtering gain of the audio high-pass filter to be a third preset gain, and adjusting the gain of the MBDRC module to be a fourth preset gain.
When the remaining power is restored to be higher than the preset threshold, the audio parameters may also be restored to default parameters, that is, the second preset frequency, the third preset gain, and the fourth preset gain may be understood as normal audio parameters reserved in advance by a manufacturer or a user. Therefore, whether the user needs to save power or not can be intelligently judged, and a better audio playing effect can be recovered.
In the embodiment of the invention, the residual electric quantity of the mobile terminal is detected; if the residual electric quantity is smaller than a preset threshold value, adjusting the filtering frequency of an audio high-pass filter to a first preset frequency, adjusting the filtering gain of the audio high-pass filter to a first preset gain, and adjusting the gain of an MBDRC module to a second preset gain, wherein the first preset frequency is higher than the filtering frequency of the audio high-pass filter before adjustment, the first preset gain is lower than the filtering gain of the audio high-pass filter before adjustment, and the second preset gain is higher than the gain of the MBDRC module before adjustment; and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module. Therefore, the mobile terminal can save power during audio playing without reducing volume, thereby reducing the influence of power saving on the audio playing effect of the mobile terminal.
Referring to fig. 6, fig. 6 is a structural diagram of a mobile terminal according to an embodiment of the present invention, which can implement details of a method for adjusting audio parameters according to the foregoing embodiment and achieve the same effects. As shown in fig. 6, the mobile terminal 600 includes a detection module 601, an adjustment module 602, and a processing module 603, where the detection module 601 is connected to the adjustment module 602, and the adjustment module 602 is connected to the processing module 603, where:
a detection module 601, configured to detect a remaining power of the mobile terminal;
an adjusting module 602, configured to adjust a filtering frequency and a filtering gain of the audio high-pass filter according to the remaining power, and adjust a gain of the MBDRC module, where the filtering frequency after the adjustment of the audio high-pass filter is higher than the filtering frequency before the adjustment, the filtering gain of the audio high-pass filter is lower than the filtering gain before the adjustment, and the gain of the MBDRC module is higher than the gain before the adjustment;
a processing module 603, configured to perform filtering processing on the target audio signal by using the adjusted audio high-pass filter, and perform dynamic range control on the target audio signal by using the adjusted MBDRC module.
Optionally, the adjusting module 602 is configured to, if the remaining power is less than a preset threshold, adjust a filtering frequency of an audio high-pass filter to a first preset frequency, adjust a filtering gain of the audio high-pass filter to a first preset gain, and adjust a gain of the MBDRC module to a second preset gain, where the first preset frequency is higher than the filtering frequency of the audio high-pass filter before adjustment, the first preset gain is lower than the filtering gain of the audio high-pass filter before adjustment, and the second preset gain is higher than the gain of the MBDRC module before adjustment.
Optionally, as shown in fig. 7, the processing module 603 includes:
a first processing unit 6031, configured to perform attenuation processing on a signal smaller than the first preset frequency in the target audio signal by using the adjusted audio high-pass filter;
a second processing unit 6032, configured to perform amplification processing on a signal smaller than a preset amplitude in the target audio signal using the adjusted MBDRC module.
Optionally, as shown in fig. 8, the adjusting module 602 includes:
a first determining unit 6021, configured to determine a filtering frequency and a filtering gain corresponding to the detected remaining power according to a first preset relationship among the remaining power, the filtering frequency of the audio high-pass filter, and the filtering gain of the audio high-pass filter;
a first adjusting unit 6022, configured to adjust a filtering frequency of the audio high-pass filter to a filtering frequency corresponding to the detected remaining power amount, and adjust a filtering gain of the audio high-pass filter to a filtering frequency corresponding to the detected remaining power amount, where the filtering frequency corresponding to the detected remaining power amount is higher than the filtering frequency before adjustment of the audio high-pass filter, and the filtering gain corresponding to the detected remaining power amount is lower than the filtering gain before adjustment of the audio high-pass filter;
a second determining unit 6023, configured to determine, according to a second preset relationship between the remaining power amount and a gain of the MBDRC module, a gain of the MBDRC module corresponding to the detected remaining power amount;
a second adjusting unit 6024, configured to adjust a gain of the MBDRC module to a gain of the MBDRC module corresponding to the determined detected remaining power, where the gain of the MBDRC module corresponding to the determined detected remaining power is higher than the gain of the MBDRC module before adjustment.
Optionally, as shown in fig. 9, the mobile terminal 600 further includes:
a second adjusting module 604, configured to adjust a filtering frequency of the audio high-pass filter to a second preset frequency, adjust a filtering gain of the audio high-pass filter to a third preset gain, and adjust a gain of the MBDRC module to a fourth preset gain if it is detected that the mobile terminal is in a charging state;
optionally, as shown in fig. 11, the mobile terminal 600 further includes:
a third adjusting module 605, configured to adjust the filtering frequency of the audio high-pass filter to a second preset frequency, adjust the filtering gain of the audio high-pass filter to a third preset gain, and adjust the gain of the MBDRC module to a fourth preset gain if the detected remaining power is greater than a preset threshold.
The mobile terminal 600 can implement each process implemented by the mobile terminal in the method embodiments of fig. 1 and fig. 3, and is not described herein again to avoid repetition.
The mobile terminal 600 of the embodiment of the invention detects the residual electric quantity of the mobile terminal; according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted; and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module. In this way, the power consumption of the mobile terminal can be reduced by filtering the target audio signal by using the adjusted audio high-pass filter, and the sound pressure level of the audio signal output by the mobile terminal can be improved by controlling the dynamic range of the target audio signal by using the adjusted MBDRC module; therefore, when the mobile terminal plays the audio, the power is saved without reducing the volume, and the influence on the audio playing effect of the mobile terminal caused by the power saving is reduced.
Referring to fig. 11, fig. 11 is a structural diagram of a mobile terminal according to an embodiment of the present invention, which can implement details of a method for adjusting audio parameters in the foregoing embodiment and achieve the same effects. As shown in fig. 11, the mobile terminal 1100 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and a user interface 1103. Various components in mobile terminal 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.
The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, track ball, touch pad, or touch screen, etc.).
It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration, and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous D RAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous SD RAM (ESDRAM), Synchronous Link D RAM (SLDRAM), and Direct bus RAM (DRRAM). The memory 1102 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.
The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.
In the embodiment of the present invention, by calling the program or instruction stored in the memory 1102, specifically, the program or instruction stored in the application 11022, when the computer program is executed by the processor 1101, the following steps can be implemented: detecting the residual electric quantity of the mobile terminal; according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted; and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
In the embodiment of the present invention, both the audio high-pass filter and the MBDRC module may be software modules.
The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, the adjusting, performed by the processor 1101, of the filtering frequency and the filtering gain of the audio high-pass filter according to the size of the remaining power, and the adjusting of the gain of the MBDRC module include:
if the residual electric quantity is smaller than a preset threshold value, adjusting the filtering frequency of an audio high-pass filter to a first preset frequency, adjusting the filtering gain of the audio high-pass filter to a first preset gain, and adjusting the gain of an MBDRC module to a second preset gain, wherein the first preset frequency is higher than the filtering frequency of the audio high-pass filter before adjustment, the first preset gain is lower than the filtering gain of the audio high-pass filter before adjustment, and the second preset gain is higher than the gain of the MBDRC module before adjustment.
Optionally, the filtering processing of the target audio signal by using the adjusted audio high-pass filter and the dynamic range control of the target audio signal by using the adjusted MBDRC module performed by the processor 1101 include:
performing attenuation processing on a signal which is smaller than the first preset frequency in the target audio signal by using the adjusted audio high-pass filter;
and amplifying the signals smaller than the preset amplitude in the target audio signal by using the adjusted MBDRC module.
Optionally, the adjusting, performed by the processor 1101, the filtering frequency and the filtering gain of the audio high-pass filter according to the size of the remaining power, and the adjusting the gain of the MBDRC module include:
determining a filtering frequency and a filtering gain corresponding to the detected residual electric quantity according to a first preset relation among the residual electric quantity, the filtering frequency of the audio high-pass filter and the filtering gain of the audio high-pass filter;
adjusting the filtering frequency of the audio high-pass filter to be the filtering frequency corresponding to the detected residual electric quantity, and adjusting the filtering gain of the audio high-pass filter to be the filtering frequency corresponding to the detected residual electric quantity, wherein the filtering frequency corresponding to the detected residual electric quantity is higher than the filtering frequency before the audio high-pass filter is adjusted, and the filtering gain corresponding to the detected residual electric quantity is lower than the filtering gain before the audio high-pass filter is adjusted;
determining the gain of the MBDRC module corresponding to the detected residual electric quantity according to a second preset relation between the residual electric quantity and the gain of the MBDRC module;
adjusting the gain of the MBDRC module to the gain of the MBDRC module corresponding to the determined detected residual electric quantity, wherein the gain of the MBDRC module corresponding to the determined detected residual electric quantity is higher than the gain of the MBDRC module before adjustment.
Optionally, the computer program when executed by the processor 1101 may further implement the steps of:
if the mobile terminal is detected to be in a charging state, adjusting the filtering frequency of the audio high-pass filter to a second preset frequency, adjusting the filtering gain of the audio high-pass filter to a third preset gain, and adjusting the gain of the MBDRC module to a fourth preset gain; or,
if the detected residual electric quantity is larger than a preset threshold value, adjusting the filtering frequency of the audio high-pass filter to be a second preset frequency, adjusting the filtering gain of the audio high-pass filter to be a third preset gain, and adjusting the gain of the MBDRC module to be a fourth preset gain.
The mobile terminal 1100 is capable of implementing each process implemented by the mobile terminal in the foregoing embodiments, and details are not repeated here to avoid repetition.
The mobile terminal 1100 of the embodiment of the present invention detects the remaining power of the mobile terminal; according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted; and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module. In this way, the power consumption of the mobile terminal can be reduced by filtering the target audio signal by using the adjusted audio high-pass filter, and the sound pressure level of the audio signal output by the mobile terminal can be improved by controlling the dynamic range of the target audio signal by using the adjusted MBDRC module; therefore, when the mobile terminal plays the audio, the power is saved without reducing the volume, and the influence on the audio playing effect of the mobile terminal caused by the power saving is reduced.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A method for adjusting audio parameters for a mobile terminal comprising an audio high-pass filter and a multi-segment dynamic range control, MBDRC, module, comprising:
detecting the residual electric quantity of the mobile terminal;
according to the size of the residual electric quantity, adjusting the filtering frequency and the filtering gain of the audio high-pass filter, and adjusting the gain of the MBDRC module, wherein the filtering frequency after the audio high-pass filter is adjusted is higher than the filtering frequency before the audio high-pass filter is adjusted, the filtering gain of the audio high-pass filter is lower than the filtering gain before the audio high-pass filter is adjusted, and the gain of the MBDRC module is higher than the gain before the audio high-pass filter is adjusted;
and performing filtering processing on a target audio signal by using the adjusted audio high-pass filter, and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
2. The method according to claim 1, wherein the step of adjusting the filtering frequency and the filtering gain of the audio high-pass filter and the gain of the MBDRC module according to the remaining power level comprises:
if the remaining power is less than a preset threshold, adjusting the filtering frequency of the audio high-pass filter to a first preset frequency, adjusting the filtering gain of the audio high-pass filter to a first preset gain, and adjusting the gain of the MBDRC module to a second preset gain, wherein the first preset frequency is higher than the filtering frequency of the audio high-pass filter before adjustment, the first preset gain is lower than the filtering gain of the audio high-pass filter before adjustment, and the second preset gain is higher than the gain of the MBDRC module before adjustment.
3. The method according to claim 2, wherein the step of filtering the target audio signal using the adjusted audio high-pass filter and performing dynamic range control on the target audio signal using the adjusted MBDRC module comprises:
performing attenuation processing on a signal which is smaller than the first preset frequency in the target audio signal by using the adjusted audio high-pass filter;
and amplifying the signals smaller than the preset amplitude in the target audio signal by using the adjusted MBDRC module.
4. The method according to claim 1, wherein the step of adjusting the filtering frequency and the filtering gain of the audio high-pass filter and the gain of the MBDRC module according to the remaining power level comprises:
determining a filtering frequency and a filtering gain corresponding to the detected residual electric quantity according to a first preset relation among the residual electric quantity, the filtering frequency of the audio high-pass filter and the filtering gain of the audio high-pass filter;
adjusting the filtering frequency of the audio high-pass filter to be the filtering frequency corresponding to the detected residual electric quantity, and adjusting the filtering gain of the audio high-pass filter to be the filtering frequency corresponding to the detected residual electric quantity, wherein the filtering frequency corresponding to the detected residual electric quantity is higher than the filtering frequency before the audio high-pass filter is adjusted, and the filtering gain corresponding to the detected residual electric quantity is lower than the filtering gain before the audio high-pass filter is adjusted;
determining the gain of the MBDRC module corresponding to the detected residual electric quantity according to a second preset relation between the residual electric quantity and the gain of the MBDRC module;
adjusting the gain of the MBDRC module to the gain of the MBDRC module corresponding to the detected residual electric quantity, wherein the gain of the MBDRC module corresponding to the detected residual electric quantity is higher than the gain of the MBDRC module before adjustment.
5. The method according to any of claims 1-4, wherein after the steps of filtering the target audio signal using the adjusted audio high-pass filter and performing dynamic range control on the target audio signal using the adjusted MBDRC module, the method further comprises:
if the mobile terminal is detected to be in a charging state, adjusting the filtering frequency of the audio high-pass filter to a second preset frequency, adjusting the filtering gain of the audio high-pass filter to a third preset gain, and adjusting the gain of the MBDRC module to a fourth preset gain; or,
if the detected residual electric quantity is larger than a preset threshold value, adjusting the filtering frequency of the audio high-pass filter to be a second preset frequency, adjusting the filtering gain of the audio high-pass filter to be a third preset gain, and adjusting the gain of the MBDRC module to be a fourth preset gain.
6. A mobile terminal, comprising:
the detection module is used for detecting the residual electric quantity of the mobile terminal;
the adjusting module is used for adjusting the filtering frequency and the filtering gain of the audio high-pass filter and adjusting the gain of the MBDRC module according to the size of the residual electric quantity, wherein the filtering frequency after the adjustment of the audio high-pass filter is higher than the filtering frequency before the adjustment, the filtering gain of the audio high-pass filter is lower than the filtering gain before the adjustment, and the gain of the MBDRC module is higher than the gain before the adjustment;
and the processing module is used for performing filtering processing on the target audio signal by using the adjusted audio high-pass filter and performing dynamic range control on the target audio signal by using the adjusted MBDRC module.
7. The mobile terminal of claim 6, wherein the adjusting module is configured to adjust a filtering frequency of the audio high-pass filter to a first preset frequency, adjust a filtering gain of the audio high-pass filter to a first preset gain, and adjust a gain of the MBDRC module to a second preset gain if the remaining power is less than a preset threshold, wherein the first preset frequency is higher than the filtering frequency of the audio high-pass filter before adjustment, the first preset gain is lower than the filtering gain of the audio high-pass filter before adjustment, and the second preset gain is higher than the gain of the MBDRC module before adjustment.
8. The mobile terminal of claim 7, wherein the processing module comprises:
the first processing unit is used for performing attenuation processing on the signals, smaller than the first preset frequency, in the target audio signal by using the adjusted audio high-pass filter;
and the second processing unit is used for amplifying the signals smaller than the preset amplitude in the target audio signal by using the adjusted MBDRC module.
9. The mobile terminal of claim 6, wherein the adjusting module comprises:
the first determining unit is used for determining the filtering frequency and the filtering gain corresponding to the detected residual electric quantity according to a first preset relation among the residual electric quantity, the filtering frequency of the audio high-pass filter and the filtering gain of the audio high-pass filter;
a first adjusting unit, configured to adjust a filtering frequency of the audio high-pass filter to a filtering frequency corresponding to the detected remaining power, and adjust a filtering gain of the audio high-pass filter to a filtering frequency corresponding to the detected remaining power, where the filtering frequency corresponding to the detected remaining power is higher than the filtering frequency before the audio high-pass filter is adjusted, and the filtering gain corresponding to the detected remaining power is lower than the filtering gain before the audio high-pass filter is adjusted;
a second determining unit, configured to determine, according to a second preset relationship between the remaining power and a gain of the MBDRC module, a gain of the MBDRC module corresponding to the detected remaining power;
a second adjusting unit, configured to adjust a gain of the MBDRC module to a gain of the MBDRC module corresponding to the detected remaining power amount, where the gain of the MBDRC module corresponding to the detected remaining power amount is higher than a gain of the MBDRC module before adjustment.
10. The mobile terminal according to any of claims 1-4, wherein the mobile terminal further comprises:
a second adjusting module, configured to adjust a filtering frequency of the audio high-pass filter to a second preset frequency, adjust a filtering gain of the audio high-pass filter to a third preset gain, and adjust a gain of the MBDRC module to a fourth preset gain if the mobile terminal is detected to be in the charging state; or,
and the third adjusting module is used for adjusting the filtering frequency of the audio high-pass filter to a second preset frequency, adjusting the filtering gain of the audio high-pass filter to a third preset gain and adjusting the gain of the MBDRC module to a fourth preset gain if the detected residual electric quantity is greater than a preset threshold.
11. A mobile terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the steps in the method of adjusting audio parameters according to any of claims 1-5 when executing the computer program.
12. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of adjusting audio parameters according to any one of claims 1-5.
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