CN106101405B - Method and device for editing or modifying audio data on mobile terminal - Google Patents
Method and device for editing or modifying audio data on mobile terminal Download PDFInfo
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Abstract
the invention provides a method for editing or modifying audio data on a mobile terminal, which comprises the following steps: acquiring original audio data with set time length, and displaying the frequency spectrum of the original audio data according to time sequence by taking time as a horizontal axis; judging whether the frequency spectrum has the selected moment or not, if so, executing the next step; otherwise, repeating the step or exiting; judging the adjusting mode and the adjusting quantity of the selected moment, and generating modified audio data of the selected moment according to the adjusting mode and the adjusting quantity; and replacing the audio data at the selected moment in the original audio data with the obtained modified audio data to obtain modified audio data. The invention also relates to a device for realizing the method. The invention has the beneficial effects that: the method has the advantages of simple steps, convenient operation and low cost.
Description
Technical Field
The present invention relates to the field of information data processing, and in particular, to a method and an apparatus for editing or modifying audio data on a mobile terminal.
background
the popularization of computer technology and mobile terminals brings great changes to people's life and work. Taking processing of audio and video signals or data as an example, dedicated devices are generally used before, although the effect may be better, the devices are expensive and need to be placed in special places, and the devices are not available for general people and are generally owned or used by professional companies or personnel. Another common way is to edit the audio/video signals using editing software on the computer, which can be installed on a desktop computer or a mobile notebook computer. Although the cost of the editing software is not high, the editing software is also moved to a certain extent, but a special computer is also needed, so that the moving performance of the editing software is limited, and meanwhile, audio and video signals must be transmitted to the computer, so that certain inconvenience is caused in use. Due to the development of the existing network, the popularization and the performance of the mobile communication terminal are greatly improved, particularly, the quality of the obtained audio and video signals is greatly improved due to the appearance of the intelligent mobile terminal, various novel social media such as media, WeChat and the like are enabled to emerge continuously, and people are used to obtain the audio and video signals by using the intelligent mobile terminal and publish or display the data by using the mobile terminal. In this case, the audio signal editing method in the prior art is complicated, inconvenient and costly.
disclosure of Invention
In order to overcome the defects of inconvenient operation, more steps and higher cost in the prior art, the invention provides the method and the device for editing or modifying the audio data on the mobile terminal, which have the advantages of simple operation, fewer steps and lower cost.
A method for editing or modifying audio data on a mobile terminal is constructed, and the method comprises the following steps:
A) Acquiring original audio data with set time length, and displaying the frequency spectrum of the original audio data according to time sequence by taking time as a horizontal axis;
B) Judging whether the frequency spectrum has the selected moment or not, if so, executing the next step; otherwise, repeating the step or exiting;
C) Judging the adjusting mode and the adjusting quantity of the selected moment, and generating modified audio data of the selected moment according to the adjusting mode and the adjusting quantity;
D) And replacing the audio data at the selected moment in the original audio data with the obtained modified audio data to obtain modified audio data.
Further, in the step B), the selected time includes clicking a point on a horizontal axis of a frequency spectrum of the displayed original audio data or clicking a point on a horizontal axis of a frequency spectrum of the displayed original audio data and maintaining for more than a set time, and an adjustment frame or a movement frame including the clicked point is displayed on a display interface.
furthermore, the adjusting manner includes a pulling direction of the adjusting frame, and the adjusting amount includes a distance that one or both sides of the adjusting frame move along the pulling direction; the direction of pulling the adjustment box comprises stretching or compressing at least one side of the adjustment box along a horizontal or vertical axis of the original audio data spectrum.
Further, decreasing or increasing the frequency of the audio data at the selected mid-point as the adjustment box is stretched or compressed along the horizontal axis of the original audio data spectrum; decreasing or increasing the amplitude of the audio data at the selected mid-point when the adjustment box is stretched or compressed along the longitudinal axis of the original audio data spectrum.
Further, the step C) obtains the modified audio data of the selected midpoint by taking the original audio data at the selected time point and changing the original audio data according to the adjustment manner and the adjustment amount.
Further, the step C) obtains the modified audio data of the selected midpoint by taking the original audio data at the selected time point and changing the original audio data according to the adjustment manner and the adjustment amount.
Furthermore, the adjusting mode also comprises a direction of pulling the moving frame to move along the transverse shaft; the adjustment amount further comprises the distance of pulling the moving frame to move along the transverse axis; and when the audio data at the selected time point are modified, modifying the time of the audio data at the selected time point into the time of a point pointed by the moving frame moving along the transverse axis, and modifying the audio data of the pointed point into the time of the selected midpoint.
The invention also provides a device for realizing the method, which comprises the following steps:
the original audio data display module: the system comprises a time display unit, a time display unit and a time display unit, wherein the time display unit is used for obtaining original audio data with set time length and displaying the frequency spectrum of the original audio data according to a time sequence by taking time as a horizontal axis;
A selection judgment module: the time for judging whether the frequency spectrum is selected or not is used;
An adjusting module: the system is used for judging the adjusting mode and the adjusting quantity of the selected moment and generating modified audio data of the selected moment according to the adjusting mode and the adjusting quantity;
a modified data acquisition module: and the modified audio data is used for replacing the audio data at the selected moment in the original audio data with the obtained modified audio data to obtain the modified audio data.
still further, the selection judgment module further includes an adjustment frame generation unit: and when one point on the horizontal axis of the frequency spectrum of the displayed original audio data is clicked, displaying an adjusting box comprising the clicked point on the display interface.
Furthermore, the adjusting module obtains the modified audio data of the selected midpoint by taking the original audio data at the selected time point and changing the original audio data according to the adjusting mode and the adjusting amount.
the method and the device for editing or modifying the audio data on the mobile terminal have the following advantages that: the obtained original audio signals are displayed according to the time sequence, the audio data on one time point is selected as an adjusting object, and then the selected original audio data is modified or exchanged according to the adjusting direction and the adjusting amount of the adjusting money or the moving frame on the selected point, so that the modified and edited original audio data is realized. In this way, the modification of the audio data on the intelligent mobile terminal is realized, and the data does not need to be transmitted to special editing equipment (usually special equipment or a computer provided with special software) from the collected equipment. Therefore, the method has the advantages of simple steps, convenient operation and low cost.
drawings
FIG. 1 is a flowchart of a method in an embodiment of the method and apparatus for editing or modifying audio data on a mobile terminal of the present invention;
FIG. 2 is a flowchart of the determination of the adjustment manner and the adjustment amount in the embodiment;
Fig. 3 is a schematic view of the structure of the device in the embodiment.
Detailed Description
the present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, in the embodiment of the method and apparatus for editing or modifying audio data on a mobile terminal of the present invention, the method includes the following steps:
Step S11 is to acquire original audio data of a set time length, and display the frequency spectrum of the original audio data in time order with time as the horizontal axis: in this step, the original audio data of a set time length is obtained, and the original audio data is recorded in the time sequence of the occurrence of the audio. After the original audio data is taken out, its spectrum is displayed on the touch screen of the smart mobile communication terminal in the recorded time order (i.e., the time order in which the audio occurs). In the frequency spectrum displayed in this step, the horizontal axis thereof is the time of the audio data, and the vertical axis thereof is the amplitude component of the audio signal at that point in time; it is worth mentioning that the amplitude component of the audio data at the one time point is a waveform representing the actual situation of the audio signal at the time point, which is obtained by superimposing the amplitudes of a plurality of sine waves with different frequencies, and it can be considered that the amplitude component is actually formed by superimposing sine waves with different amplitudes and different frequencies at the time point, from the viewpoint of signal time domain analysis. In this step, the acquisition may be to fetch audio data already stored in the memory, or may be to currently record audio data. In this embodiment, if the length of a piece of audio data is longer than the set time, the audio signals with the set time length can be taken out section by section in time sequence for processing until the audio data is completely processed.
If the selected time is not the time of step S12, if yes, executing the next step; otherwise, go to step S16; in this step, it is determined whether there is a selected time in the frequency spectrum, and generally speaking, in this embodiment, since the display screen of the smart mobile communication terminal is a touch screen, it is only necessary to touch the horizontal axis corresponding to the selected time or the frequency spectrum corresponding to the selected time. If the selected time is determined, the next step is executed, otherwise, step S16 is executed, and in this embodiment, different selection effects are generated due to different time lengths of touching the selected time, which will be described in more detail later.
Step S13 determines the adjustment method and the adjustment amount for the selected time: in the step, judging the adjusting mode and the adjusting quantity of the selected moment; in the present embodiment, the two types of movement and adjustment are divided according to the length of time for touching the selected midpoint. Basically, if the touch time exceeds a certain time threshold, for example, a certain point on the frequency spectrum is touched for more than 1 second, then a moving frame is displayed on the display screen, and the following adjustment is actually to exchange data at different time points of the audio data; if the touch time does not exceed the set time threshold, an adjustment box is displayed on the display screen, and the subsequent adjustment is actually to adjust the parameter of the audio data at the selected midpoint. In other words, the selected time includes clicking (the touch time does not exceed a set time threshold) a point on a horizontal axis of a frequency spectrum of the displayed original audio data, and displaying an adjustment box including the clicked point on the display interface. The audio data on the selected point can be adjusted by adjusting the adjusting frame, so that the method is more intuitive and convenient to operate.
In this case, the adjustment manner includes a direction in which the adjustment frame is pulled, and the adjustment amount includes a distance in which one or both sides of the adjustment frame move in the direction of the pulling. The direction of pulling the adjustment box comprises stretching or compressing at least one side of the adjustment box along a horizontal or vertical axis of the original audio data spectrum. When the adjusting frame is stretched or compressed along the horizontal axis of the original audio data frequency spectrum, reducing or increasing the frequency of the audio data at the selected middle point, in other words, reducing or increasing the frequency of all audio components corresponding to the time point at the time point; when the adjusting frame is stretched or compressed along the longitudinal axis of the original audio data frequency spectrum, the amplitude of the audio data on the selected midpoint is reduced or increased, the audio frequency can be adjusted, the amplitude can be adjusted, and the application range is wider. In this embodiment, when the audio data at the selected time point is modified, the adjustment amount of the audio data parameter is proportional to the ratio of the position of the edge corresponding to the adjustment frame after being moved to the original position. It is worth mentioning that the adjustment of the frequency of a selected mid-point may also be performed according to the scale of the original audio data, for example. When the adjusting frame is stretched by a unit length (or a set length) along the vertical axis line of defense, the audio data corresponding to the point can be promoted by one or a half scale; and when the adjusting frame is compressed by a unit length (or a set length) along the vertical axis, the scale is reduced by one or a half scale. The adjusting method can save a large amount of adjusting time and adjust accurately in certain use occasions such as song editing. It should be noted that when the audio data at a time is adjusted, only one of the components is not adjusted, for example, only the fundamental component or some harmonic overtone component in the audio data is not adjusted, but all of the components are adjusted together according to a set ratio; for example, in adjusting the frequency, if the fundamental wave decreases a scale or a frequency corresponding to a scale, all the overtones at that time also decrease a scale or a frequency corresponding to a scale at the same time; similarly, when the amplitude of the audio data at a time is adjusted, the amplitudes of the fundamental wave and the harmonic overtone components at the time are simultaneously amplified or reduced. The advantage of such an adjustment is that the characteristics of the original audio data can be maintained to the maximum extent, so that the original singer can still be easily distinguished after the adjustment. Whereas adjusting only one component causes the original audio data to lose its particular sound quality.
In another case, that is, when the time for touching a certain point of the frequency spectrum exceeds a set time threshold at the time of selection, the mobile mode is entered. At this point, on the selected center point on the display screen, a moving frame is displayed. The adjustment mode is to move the audio data at the selected moment, and the adjustment quantity is the moving direction and the moving distance of the finger or other objects on the display screen when the user touches the display screen again. In this case, the audio parameter of the selected audio data does not need to be modified, but the audio data at the selected time may be replaced with the audio data at the position pointed by the touch again.
Step S14 generates modified audio data at the selected time according to the above adjustment mode and adjustment amount: in this step, whichever of the above two cases occurs, modified audio data is generated in accordance with the above-described, corresponding adjustment manner and adjustment amount. The modified audio data of the selected midpoint is obtained by obtaining the original audio data at the selected time point and changing the original audio data according to the adjusting mode and the adjusting quantity.
step S15 obtains modified audio data: in this step, the modified audio data is used to replace the audio data at the selected time in the original audio data, so as to obtain the modified audio data.
step S16 exits the modification when the set time is exceeded; if the time does not exceed the set time, continuing to judge that in the step, the time for executing the step S12 is firstly judged, and if the selected time is not found after the step S12 is executed for a set time, the audio data editing is quitted; if the set time has not been reached, the process returns to repeat step S12 to wait for the user' S selection.
Fig. 2 shows a specific judgment flow for the adjustment mode and the adjustment amount in this embodiment, which includes the following steps:
the selected midpoint in step S21 is no, if yes, step S22 is performed, if no, step S24 is performed: as for how to judge whether the frame is adjusted or moved, because the definition of the frame and the frame is completely different, the characteristics of the window body are different, and whether the frame is adjusted or not can be easily judged as long as the characteristics or the structure of the window body are known. The obvious difference is that four sides of the window body of the adjusting frame can be dragged, but the whole window body cannot move; and the four sides of the frame of the moving frame cannot be moved, but the whole frame can be moved. Therefore, the two housings can be easily identified by their different characteristics.
Step S22 judges the adjustment manner and adjustment amount of the adjustment frame in this step, it is the adjustment frame that appears on the selected center point on the display screen that has been known through the above steps, and therefore, in this step, it is determined how to adjust the audio parameter of the selected center point by judging the specific manner and adjustment amount by which the adjustment frame is adjusted. As described above, in this step, it is determined whether the adjustment frame is compressed or pulled up, stretched or compressed in the direction of the horizontal axis, or stretched or compressed in the direction of the vertical axis. When the audio data is stretched or compressed in the direction of the horizontal axis, modifying the frequency of the audio data at the point to reduce or increase the frequency, wherein the specific value of the reduction or increase is determined by the adjustment amount and the preset frequency adjustment step length; when the audio data is stretched or compressed in the direction of the vertical axis, the amplitude of the audio data at the point is modified to be increased or decreased, and the specific value of the increase or decrease is determined by the adjustment amount and the preset amplitude adjustment step size. For example, if the adjustment amount is 2, i.e., 2 unit lengths are stretched in the longitudinal axis direction, and the previously set amplitude adjustment step size is 0.5V (voltage), the adjustment increases the amplitude by 1V; likewise, so does the adjustment of the frequency. The unit length is also set, and may be displayed on the display screen or not. The adjustment can be conveniently realized by the arrangement, and the adjustment amount of the sequential adjustment is consistent.
Step S23 adjusts the selected audio data according to the adjustment method and adjustment amount obtained in the previous step: in this step, the selected audio data is modified to obtain modified or edited audio data.
Step S24 waits for a movement action representing the direction and distance of movement, and moves the selected audio data in its direction of movement after it occurs: in this step, a moving frame appears on the display screen, and therefore, the direction and distance of the movement need to be input, and in this embodiment, the moving frame is dragged on the touch screen by using a finger or other tool. It should be noted that this step cannot wait indefinitely, and a time range is usually set up in which the dragging or moving action is not found, and the operator is considered to have abandoned the movement. At this time, the current movement or the current audio data modification is exited.
the invention also provides a device for realizing the method, as shown in fig. 3, the device comprises an original audio data display module 1, a selection judgment module 2, an adjustment module 3 and a modified data acquisition module 4; the original audio data display module 1 is configured to obtain original audio data with a set time length, and display a frequency spectrum of the original audio data according to a time sequence by using time as a horizontal axis; the selection judgment module 2 is used for judging whether the frequency spectrum has the selected moment; the adjusting module 3 is used for judging the adjusting mode and the adjusting quantity of the selected moment and generating modified audio data of the selected moment according to the adjusting mode and the adjusting quantity; the modified data obtaining module 4 is configured to replace the audio data at the selected time in the original audio data with the obtained modified audio data to obtain modified audio data.
In addition, in this embodiment, the selection judgment module 2 further includes an adjustment frame generation unit 21, where the adjustment frame generation unit 21 is configured to, when a point on a horizontal axis of a frequency spectrum of the displayed original audio data is clicked, display an adjustment frame including the clicked point on a display interface or generate a moving frame when a time length of clicking the point on the horizontal axis of the frequency spectrum of the displayed original audio data exceeds a set time threshold. The adjusting module 3 obtains the modified audio data of the selected midpoint by obtaining the original audio data at the selected time point and changing the original audio data according to the adjusting mode and the adjusting amount.
As a specific example of the present invention, all the above functions can be implemented by a mobile phone terminal, for example, after a user hums or sings a piece of music, an original audio data display module in a mobile phone collects original audio data, and displays a frequency spectrum of the original audio data on a mobile phone screen according to a time sequence, where a horizontal direction is a time parameter and a vertical direction is a frequency spectrum parameter of the audio data, and in a specific example, a time-frequency spectrum waveform curve is generated by displaying the frequency spectrum of the audio data on the screen.
If the user is not satisfied with the tone at any time point, the time point on the screen can be clicked through a gesture touch screen method, the selection judgment module can judge whether the frequency spectrum has the selected moment, and if yes, the next step is executed; otherwise, repeating the step until the time point is selected, or directly exiting the current execution.
If a time point needing to be adjusted is selected, the adjusting module generates an adjusting frame or a moving frame on the screen, the user only needs to pull the direction of the adjusting frame to realize adjustment, for example, if the user feels that the sound amplitude is a little large, the adjusting frame is compressed along the direction of a longitudinal axis, wherein the adjustment amount of the audio data parameter is in direct proportion to the ratio of the position of the edge corresponding to the adjusting frame after being moved to the original position, for example, the original sound amplitude is 30, and the sound amplitude is changed into 20 after being compressed, and then the sound amplitude is 2/3 of the original sound amplitude after being adjusted. Conversely, the amplitude of the audio data at the time point may be increased by stretching. And dragging the moving frame to move the audio data at the time point to the time position pointed by the dragging action.
After adjustment, if the user is satisfied with the new audio data, the new audio data is saved through the modified data acquisition module, wherein the user can select to store the new audio data additionally or alternatively in a mode of replacing the original audio data. If the user is not satisfied with the new audio data, the adjusted curve can be restored to the original audio data curve, and then re-editing or modifying operation is performed.
of course, if the customer is not satisfied with the music at another time point after adjusting one of the points, the adjustment can be made according to the above method.
Of course, the method may also be implemented on other mobile terminals such as a tablet, and may also be operated by an external input device, for example, by an input device such as a keyboard or a mouse, for example, a mouse drags a curve to replace a gesture touch screen operation.
By the method, the user can adjust the music recorded by the user at any time and any place, the operation is simple and convenient, the method is practical and easy to use, and is suitable for people of all ages, and the interest and the operation experience of the user are greatly improved.
The above-described embodiments are intended to be illustrative, and not restrictive, of the invention, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (8)
1. a method for editing or modifying audio data on a mobile terminal, comprising the steps of:
A) Acquiring original audio data with set time length, and displaying the frequency spectrum of the original audio data according to time sequence by taking time as a horizontal axis;
B) Judging whether the frequency spectrum has the selected moment or not, if so, executing the next step; otherwise, repeating the step or exiting;
C) Judging the adjusting mode and the adjusting quantity of the selected moment, and generating modified audio data of the selected moment according to the adjusting mode and the adjusting quantity;
D) Replacing the audio data at the selected moment in the original audio data with the obtained modified audio data to obtain modified audio data;
In the step B), the selected time includes clicking a point on a horizontal axis of a frequency spectrum of the displayed original audio data or clicking a point on a horizontal axis of a frequency spectrum of the displayed original audio data and maintaining for more than a set time, and an adjusting frame or a moving frame including the clicked point is displayed on a display interface; if the click time exceeds the set time, displaying a moving frame, wherein the adjustment mode is to exchange data on different time points of the audio data; and if the touch time does not exceed the set time, displaying an adjusting frame, wherein the adjusting frame is used for adjusting the parameters of the audio data on the selected midpoint.
2. The method of claim 1, wherein the adjustment manner includes a direction in which the adjustment frame is pulled, and the adjustment amount includes a distance in which one or both sides of the adjustment frame move along the direction of pulling; the direction of pulling the adjustment box comprises stretching or compressing at least one side of the adjustment box along a horizontal or vertical axis of the original audio data spectrum.
3. the method of claim 2, wherein the frequency of the audio data at the selected mid-point is lowered or raised when the adjustment box is stretched or compressed along the horizontal axis of the original audio data spectrum; decreasing or increasing the amplitude of the audio data at the selected mid-point when the adjustment box is stretched or compressed along the longitudinal axis of the original audio data spectrum.
4. The method according to claim 3, wherein the audio data at the selected time point is modified by an amount of adjustment of the audio data parameter proportional to a ratio of the moved position of the edge of the adjustment frame to the original position.
5. The method as claimed in claim 4, wherein in step C), the modified audio data of the selected midpoint is obtained by obtaining the original audio data at the selected time point and changing the original audio data according to the adjustment manner and the adjustment amount.
6. The method of claim 5, wherein the adjusting manner further comprises a direction of pulling the moving frame to move along the horizontal axis; the adjustment amount further comprises the distance of pulling the moving frame to move along the transverse axis; and when the audio data at the selected time point are modified, modifying the time of the audio data at the selected time point into the time of a point pointed by the moving frame moving along the transverse axis, and modifying the audio data of the pointed point into the time of the selected midpoint.
7. An apparatus for implementing the method of claim 1, comprising:
the original audio data display module: the system comprises a time display unit, a time display unit and a time display unit, wherein the time display unit is used for obtaining original audio data with set time length and displaying the frequency spectrum of the original audio data according to a time sequence by taking time as a horizontal axis;
A selection judgment module: the time for judging whether the frequency spectrum is selected or not is used;
an adjusting module: the system is used for judging the adjusting mode and the adjusting quantity of the selected moment and generating modified audio data of the selected moment according to the adjusting mode and the adjusting quantity;
A modified data acquisition module: the modified audio data is used for replacing the audio data at the selected moment in the original audio data with the obtained modified audio data to obtain modified audio data;
the selection judgment module further comprises:
An adjustment frame generation unit: the method comprises the steps that a point on a frequency spectrum horizontal axis of original audio data displayed in a clicking mode or a point on a frequency spectrum horizontal axis of the original audio data displayed in a clicking mode is maintained for more than set time, and an adjusting frame or a moving frame comprising the clicked point is displayed on a display interface; if the click time exceeds the set time, displaying a moving frame, wherein the adjustment mode is to exchange data on different time points of the audio data; and if the touch time does not exceed the set time, displaying an adjusting frame, wherein the adjusting frame is used for adjusting the parameters of the audio data on the selected midpoint.
8. The apparatus of claim 7, wherein the adjusting module obtains the modified audio data of the selected midpoint by taking the original audio data at the selected time point and changing the original audio data according to the adjusting manner and the adjusting amount.
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| CN201610398095.6A CN106101405B (en) | 2016-06-07 | 2016-06-07 | Method and device for editing or modifying audio data on mobile terminal |
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| CN102098606A (en) * | 2009-12-10 | 2011-06-15 | 腾讯科技（深圳）有限公司 | Method and device for dynamically adjusting volume |
| US20130069957A1 (en) * | 2010-06-02 | 2013-03-21 | Tencent Technology (Shenzhen) Company Limited | Method and Device for Playing Animation and Method and System for Displaying Animation Background |
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