CN106708463B - Method and device for adjusting volume of shot video file - Google Patents
Method and device for adjusting volume of shot video file Download PDFInfo
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- CN106708463B CN106708463B CN201611127373.0A CN201611127373A CN106708463B CN 106708463 B CN106708463 B CN 106708463B CN 201611127373 A CN201611127373 A CN 201611127373A CN 106708463 B CN106708463 B CN 106708463B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
Abstract
A method and apparatus for adjusting a volume of a photographed video file are provided. The method comprises the following steps: (A) recording sound by using a microphone of the electronic terminal when shooting a video file; (B) the volume of the audio part of the recorded sound having a volume above a first predetermined threshold is decreased and/or the volume of the audio part of the recorded sound having a volume below a second predetermined threshold is increased. According to the method and the device, the sound of the shot video file can be automatically adjusted, so that the sound volume of the sound of the shooting person and the sound of the shot person in the video file are close to each other, and the abrupt feeling caused by the overlarge sound volume difference is reduced.
Description
Technical Field
The present invention relates generally to the field of multimedia, and more particularly, to a method and apparatus for adjusting the volume of a photographed video file.
Background
Users often use electronic terminals (e.g., mobile communication terminals, tablet computers, etc.) to capture videos, and when capturing videos, a photographer holding the electronic terminal is closest to the electronic terminal, so that the sound of the photographer is often loud and the sound of the photographer is quiet in captured video files. If the volume of the playing video file is turned up, the sound of the photographer is too large, and if the playing volume is turned down, the sound of the photographed person is too small.
Disclosure of Invention
An exemplary embodiment of the present invention is to provide a method and apparatus for adjusting a volume of a photographed video file to solve a problem in the related art that a difference in volume between a photographer's voice and a photographer's voice is excessively large in a photographed video file.
According to an exemplary embodiment of the present invention, there is provided a method of adjusting a volume of a photographed video file, including: (A) recording sound by using a microphone of the electronic terminal when shooting a video file; (B) the volume of the audio part of the recorded sound having a volume above a first predetermined threshold is decreased and/or the volume of the audio part of the recorded sound having a volume below a second predetermined threshold is increased.
Optionally, step (a) comprises: when an instruction for shooting a video file is received, detecting whether the electronic terminal is connected with an earphone or not; when the connection between the electronic terminal and the earphone is detected, recording sound by using a microphone of the electronic terminal and a microphone of the earphone at the same time, wherein the step (B) comprises the following steps: performing inverse processing on sound recorded by a microphone of the earphone; and performing superposition processing on the sound after the phase inversion processing and the sound recorded by the microphone of the electronic terminal, so as to reduce the volume of the audio part with the volume higher than the first preset threshold value in the sound recorded by the microphone of the electronic terminal.
Optionally, step (B) comprises: detecting a first audio portion of the recorded sound having a volume above a first predetermined threshold and/or a second audio portion having a volume below a second predetermined threshold; the volume of the first audio portion is decreased by X% and/or the volume of the second audio portion is increased by Y%, where X and Y are constants greater than 0.
Optionally, step (B) further comprises: and detecting an audio part including the voice of the photographer from among the first audio parts and/or detecting an audio part including the voice of the subject from among the second audio parts, wherein the volume of the audio part including the voice of the photographer is reduced by X% and/or the volume of the audio part including the voice of the subject is increased by Y%.
Optionally, step (B) further comprises: detecting a first audio part with the volume higher than a first preset threshold value in the sound recorded by a microphone of the electronic terminal, wherein the audio part corresponding to the first audio part in the sound recorded by the microphone of the earphone is subjected to phase reversal processing; and performing superposition processing on the audio part subjected to the phase inversion processing and a first audio part in the sound recorded by a microphone of the electronic terminal.
Optionally, step (B) further comprises: detecting an audio part including a photographer's voice among the first audio parts, wherein an audio part corresponding to the audio part including the photographer's voice among sounds recorded with a microphone of an earphone is subjected to an inversion process; and performing superposition processing on the audio part subjected to the phase inversion processing and the audio part including the sound of the photographer in the sound recorded by the microphone of the electronic terminal.
Alternatively, an audio part including the photographer's voice among the first audio parts is detected according to the voice feature of the photographer.
Alternatively, the voice characteristics of the photographer are extracted by a pre-stored media file about the photographer.
According to another exemplary embodiment of the present invention, there is provided an apparatus for adjusting a volume of a photographed video file, including: the sound recording unit is used for recording sound by using a microphone of the electronic terminal when the video file is shot; and the sound adjusting unit is used for reducing the volume of the audio part with the volume higher than the first preset threshold value in the recorded sound and/or increasing the volume of the audio part with the volume lower than the second preset threshold value in the recorded sound.
Optionally, the sound recording unit comprises: the earphone connection detection unit is used for detecting whether the electronic terminal is connected with the earphone or not when receiving an instruction of shooting a video file; a recording unit for recording sound by using a microphone of the electronic terminal and a microphone of the earphone when detecting that the electronic terminal is connected to the earphone, wherein the sound adjusting unit comprises: an inverting processing unit that performs inverting processing on a sound recorded by a microphone of the earphone; and a superposition processing unit which performs superposition processing on the sound after the phase inversion processing and the sound recorded by the microphone of the electronic terminal, so as to reduce the volume of the audio part with the volume higher than the first preset threshold value in the sound recorded by the microphone of the electronic terminal.
Optionally, the sound adjusting unit comprises: a detection unit which detects a first audio part with the volume higher than a first preset threshold value and/or a second audio part with the volume lower than a second preset threshold value in the recorded sound; an adjusting unit to decrease the volume of the first audio portion by X% and/or increase the volume of the second audio portion by Y%, wherein X and Y are constants greater than 0.
Optionally, the detecting unit further detects an audio portion including the photographer's voice among the first audio portions and/or detects an audio portion including the subject's voice among the second audio portions, wherein the adjusting unit decreases the volume of the audio portion including the photographer's voice by X% and/or increases the volume of the audio portion including the subject's voice by Y%.
Optionally, the sound adjusting unit further comprises: the electronic terminal comprises a detection unit, a phase inversion processing unit and a control unit, wherein the detection unit detects a first audio part with the volume higher than a first preset threshold value in sound recorded by a microphone of the electronic terminal, and the phase inversion processing unit performs phase inversion processing on an audio part corresponding to the first audio part in sound recorded by a microphone of an earphone; the superimposition processing unit superimposes the audio portion subjected to the phase inversion processing on a first audio portion among sounds recorded by a microphone of the electronic terminal.
Optionally, the detection unit further detects an audio portion including the photographer's voice among the first audio portions, wherein the inversion processing unit performs inversion processing on an audio portion corresponding to the audio portion including the photographer's voice among the voices recorded with a microphone of the headphone; the superimposition processing unit superimposes the audio portion subjected to the phase inversion processing on the audio portion including the photographer's voice among the voices recorded with the microphone of the electronic terminal.
Alternatively, the detection unit detects an audio part including the photographer's voice among the first audio parts according to the voice feature of the photographer.
Alternatively, the voice characteristics of the photographer are extracted by a pre-stored media file about the photographer.
In the method and the device for adjusting the volume of the shot video file according to the exemplary embodiment of the invention, the volume of the audio part with too high volume and/or the volume of the audio part with too low volume in the shot video file can be automatically adjusted, so that the volume of the sound of the photographer and the sound of the person to be photographed in the shot video file are close to each other, and the abrupt feeling caused by too large volume difference is reduced, thereby optimizing the effect of the sound of the shot video file and improving the user experience.
Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.
Drawings
The above and other objects and features of exemplary embodiments of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate exemplary embodiments, wherein:
fig. 1 illustrates a flowchart of a method of adjusting a volume of a photographed video file according to an exemplary embodiment of the present invention;
fig. 2 illustrates a flowchart of a method of adjusting a volume of a photographed video file according to another exemplary embodiment of the present invention;
fig. 3 illustrates a block diagram of an apparatus for adjusting a volume of a photographed video file according to an exemplary embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.
Fig. 1 illustrates a flowchart of a method of adjusting a volume of a photographed video file according to an exemplary embodiment of the present invention. The method may be performed by an electronic terminal or may be implemented by a computer program. For example, the method may be performed by an application installed in the electronic terminal or by a functional program implemented in an operating system of the electronic terminal. Here, the electronic terminal may be, for example, a mobile communication terminal, a personal computer, a tablet computer, a game machine, a digital multimedia player, or the like, which is capable of photographing a video file.
Referring to fig. 1, in step S10, sound is recorded using a microphone of an electronic terminal when a video file is photographed.
In step S20, the volume of the audio portion of the recorded sound having a volume above the first predetermined threshold is decreased, and/or the volume of the audio portion of the recorded sound having a volume below the second predetermined threshold is increased.
As an example, the first predetermined threshold may be set based on a volume of the recorded sound, e.g. the first predetermined threshold may be set based on a volume average of the recorded sound, e.g. the first predetermined threshold may be set as volume average a (a being a constant greater than 1). Furthermore, the first predetermined threshold may be an empirical value, or may be set according to other suitable manners, for example, the first predetermined threshold may be set by a user according to requirements.
Accordingly, as an example, the second predetermined threshold may be set based on a volume of the recorded sound, for example, the second predetermined threshold may be set based on a volume average of the recorded sound, for example, the second predetermined threshold may be set as a volume average B (B is a constant greater than 0 and less than 1). Furthermore, the second predetermined threshold may be an empirical value, or may be set according to other suitable manners, for example, the second predetermined threshold may be set by a user according to requirements.
As an example, a first audio portion of the recorded sound having a volume above a first predetermined threshold and/or a second audio portion having a volume below a second predetermined threshold may be detected; the volume of the first audio portion may be decreased by X% and/or the volume of the second audio portion may be increased by Y%, where X and Y are constants greater than 0. That is, the volume of all audio portions of the recorded sound having a volume above a first predetermined threshold is decreased, and/or the volume of all audio portions of the recorded sound having a volume below a second predetermined threshold is increased.
As an example, the values of X and Y may be empirical values, may be set based on the volume of the recorded sound, may be set by the user as desired, and may be set in other suitable manners.
As an example, an audio portion including the photographer's voice among the first audio portion and/or an audio portion including the photographer's voice among the second audio portion may be further detected, the volume of the detected audio portion including the photographer's voice may be decreased by X%, and/or the volume of the detected audio portion including the photographer's voice may be increased by Y%. That is, the volume of a part of the recorded sound having a volume higher than a first predetermined threshold (i.e., an audio part including the photographer's sound among the first audio part) is decreased, and/or the volume of a part of the recorded sound having a volume lower than a second predetermined threshold (i.e., an audio part including the photographer's sound among the second audio part) is increased.
As an example, an audio part including the photographer's voice among the first audio parts may be detected according to the voice characteristics of the photographer. Accordingly, an audio portion including the voice of the photographer, from among the second audio portions, can be detected based on the voice feature of the photographer.
As an example, the voice characteristics of the photographer may be extracted through a pre-stored media file about the photographer. Accordingly, the voice characteristics of the photographer can be extracted by pre-storing a media file about the photographer. It should be appreciated that the voice characteristics of the photographer and/or subject can be extracted according to various suitable techniques. For example, the extracted sound features may be speech features such as cepstral parameters, mel-frequency cepstral parameters, and the like.
Fig. 2 illustrates a flowchart of a method of adjusting a volume of a photographed video file according to another exemplary embodiment of the present invention.
As shown in fig. 2, when an instruction to photograph a video file is received, it is detected whether an electronic terminal is connected to a headset in step S101.
In step S102, when it is detected that the electronic terminal is connected to the headset, sound is recorded using both the microphone of the electronic terminal and the microphone of the headset.
In step S201, the sound recorded with the microphone of the headphone is subjected to the inverse phase processing.
In step S202, the sound after the phase inversion processing and the sound recorded by the microphone of the electronic terminal are subjected to a superposition processing, so that the volume of the audio part with the volume higher than the first predetermined threshold value in the sound recorded by the microphone of the electronic terminal is reduced.
It should be understood that the volume of the sound after the phase inversion processing may be appropriately adjusted (e.g., reduced by Z%) before the superimposition processing is performed, so that the superimposed sound recorded by the microphone of the electronic terminal is within a suitable volume range.
As an example, the superimposition processing may be implemented in various suitable manners, for example, the superimposition processing may be implemented by a manner of simultaneous playback.
As an example, step S201 may include: detecting a first audio portion with a volume higher than a first predetermined threshold value among sounds recorded by a microphone of the electronic terminal, and performing an inverse phase process on an audio portion corresponding to the first audio portion among the sounds recorded by the microphone of the headset, wherein in step S202, the audio portion after the inverse phase process and the first audio portion among the sounds recorded by the microphone of the electronic terminal may be subjected to a superposition process. So that the superimposition processing is performed only for the first audio part of the sounds recorded by the microphone of the electronic terminal, the volume of which is higher than the first predetermined threshold.
As an example, step S201 may further include: detecting an audio part including a photographer ' S voice among the first audio parts, and then performing an inversion process on an audio part corresponding to the audio part including the photographer ' S voice among sounds recorded using a microphone of the headset, wherein the audio part after the inversion process is subjected to a superimposition process on the audio part including the photographer ' S voice among sounds recorded using a microphone of the electronic terminal in step S202. So that the superimposition processing is performed only for an audio portion including the photographer's voice among the first audio portions recorded by the microphone of the electronic terminal.
Fig. 3 illustrates a block diagram of an apparatus for adjusting a volume of a photographed video file according to an exemplary embodiment of the present invention.
As shown in fig. 3, an apparatus for adjusting a volume of a photographed video file according to an exemplary embodiment of the present invention includes: a sound recording unit 10 and a sound festival unit 20. These units may be implemented by a dedicated device, for example, by a general-purpose hardware processor such as a digital signal processor, a field programmable gate array, an application processor, a CPU, or the like, or by a dedicated hardware processor such as a dedicated chip, or entirely by a computer program, for example, as a module in an application installed in an electronic terminal, or as a functional program implemented in an operating system of the electronic terminal.
The sound recording unit 10 is used to record sound using a microphone of an electronic terminal when a video file is photographed.
The sound adjustment unit 20 is configured to decrease the volume of the audio portion of the recorded sound having a volume above a first predetermined threshold and/or increase the volume of the audio portion of the recorded sound having a volume below a second predetermined threshold.
As an example, the first predetermined threshold may be set based on a volume of the recorded sound, e.g. the first predetermined threshold may be set based on a volume average of the recorded sound, e.g. the first predetermined threshold may be set as volume average a (a being a constant greater than 1). Furthermore, the first predetermined threshold may also be set according to other suitable manners, for example, the first predetermined threshold may be set by a user according to requirements.
Accordingly, as an example, the second predetermined threshold may be set based on a volume of the recorded sound, for example, the second predetermined threshold may be set based on a volume average of the recorded sound, for example, the second predetermined threshold may be set as a volume average B (B is a constant greater than 0 and less than 1). Furthermore, the second predetermined threshold may also be set according to other suitable manners, for example, the second predetermined threshold may be set by a user according to requirements.
As an example, the sound adjusting unit 20 may include: a detection unit (not shown) and an adjustment unit (not shown).
The detection unit is used for detecting a first audio part with the volume higher than a first preset threshold value and/or a second audio part with the volume lower than a second preset threshold value in the recorded sound.
The adjusting unit is used for reducing the volume of the first audio part by X% and/or increasing the volume of the second audio part by Y%, wherein X and Y are constants larger than 0.
As an example, the values of X and Y may be empirical values, may be set based on the volume of the recorded sound, may be set by the user as desired, and may be set in other suitable manners.
As an example, the detection unit may further detect an audio portion including the photographer's voice among the first audio portions and/or detect an audio portion including the photographer's voice among the second audio portions, wherein the adjustment unit decreases the volume of the audio portion including the photographer's voice by X% and/or increases the volume of the audio portion including the photographer's voice by Y%.
As an example, the detection unit may detect an audio part including the photographer's voice among the first audio parts according to a voice feature of the photographer. Accordingly, an audio portion including the voice of the photographer, from among the second audio portions, can be detected based on the voice feature of the photographer.
As an example, the voice characteristics of the photographer may be extracted through a pre-stored media file about the photographer. Accordingly, the voice characteristics of the photographer can be extracted by pre-storing a media file about the photographer. It should be understood that the detection unit may extract the voice characteristics of the photographer and/or subject according to various suitable techniques. For example, the extracted sound features may be speech features such as cepstral parameters, mel-frequency cepstral parameters, and the like.
As another example, the sound recording unit 10 may include: a headset connection detection unit (not shown) and a recording unit (not shown).
The earphone connection detection unit is used for detecting whether the electronic terminal is connected with the earphone or not when receiving an instruction of shooting the video file.
The recording unit is used for recording sound by using a microphone of the electronic terminal and a microphone of the earphone when the earphone connection detection unit detects that the electronic terminal is connected with the earphone.
The sound adjusting unit 20 may include: an inversion processing unit (not shown) and a superposition processing unit (not shown).
The reverse processing unit is used for performing reverse processing on the sound recorded by the microphone of the earphone.
The superposition processing unit is used for carrying out superposition processing on the sound after the phase inversion processing and the sound recorded by the microphone of the electronic terminal, so that the volume of the audio part with the volume higher than the first preset threshold value in the sound recorded by the microphone of the electronic terminal is reduced.
It should be understood that the superimposition processing unit may appropriately adjust (e.g., reduce by Z%) the volume of the sound after the phase inversion processing before the superimposition processing is performed, so that the superimposed sound recorded with the microphone of the electronic terminal is within an appropriate volume range.
As an example, the superimposition processing unit may implement the superimposition processing in various suitable manners, for example, the superimposition processing may be implemented by a manner of simultaneous playback.
As an example, the sound adjusting unit 20 may further include: a detection unit. The detection unit detects a first audio part with the volume higher than a first preset threshold value in the sound recorded by the microphone of the electronic terminal, wherein the anti-phase processing unit can perform anti-phase processing on the audio part corresponding to the first audio part in the sound recorded by the microphone of the earphone; the superimposition processing unit may superimpose the audio portion after the phase inversion processing with a first audio portion among sounds recorded with a microphone of the electronic terminal. So that the superimposition processing is performed only for the first audio part of the sounds recorded by the microphone of the electronic terminal, the volume of which is higher than the first predetermined threshold.
As an example, the detection unit may further detect an audio part including the photographer's voice among the first audio parts, wherein the inversion processing unit may invert an audio part corresponding to the audio part including the photographer's voice among the voices recorded with a microphone of the headset; the superimposition processing unit may perform superimposition processing on the audio portion after the phase inversion processing and the audio portion including the photographer's voice among the voices recorded with the microphone of the electronic terminal. So that the superimposition processing is performed only for an audio portion including the photographer's voice among the first audio portions recorded by the microphone of the electronic terminal.
According to the method and the device for adjusting the volume of the shot video file, which are disclosed by the exemplary embodiment of the invention, the volume of the audio part with the too high volume and/or the volume of the audio part with the too low volume in the shot video file can be automatically adjusted, so that the volume of the sound of a photographer and the volume of the sound of a photographed person in the shot video file are close to each other, and the abrupt feeling caused by the too large volume difference is reduced, thereby optimizing the effect of the sound of the shot video file and improving the user experience.
Although a few exemplary embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. A method of adjusting the volume of a captured video file, comprising:
(A) recording sound by using a microphone of the electronic terminal when shooting a video file;
(B) detecting a first audio portion of the recorded sound having a volume above a first predetermined threshold and/or a second audio portion having a volume below a second predetermined threshold;
(C) detecting an audio portion including the voice of the photographer from among the first audio portions according to the voice feature of the photographer and/or detecting an audio portion including the voice of the subject from among the second audio portions according to the voice feature of the subject;
(D) the volume of an audio portion including the photographer's voice among the first audio portion is decreased, and/or the volume of an audio portion including the photographer's voice among the second audio portion is increased.
2. The method of claim 1, wherein step (a) comprises:
when an instruction for shooting a video file is received, detecting whether the electronic terminal is connected with an earphone or not;
when the connection between the electronic terminal and the earphone is detected, recording sound by using a microphone of the electronic terminal and a microphone of the earphone at the same time;
wherein step (B) comprises: detecting a first audio portion of sounds recorded by a microphone of the electronic terminal, the first audio portion having an audio volume above a first predetermined threshold;
the step (C) comprises: detecting an audio part including the photographer's voice among the first audio parts according to the voice characteristics of the photographer;
the step (D) includes: performing an inversion process on an audio part corresponding to the audio part including the photographer's voice among the voices recorded by the microphone of the earphone;
and performing superposition processing on the audio part subjected to the phase inversion processing and the audio part including the sound of the photographer in the sound recorded by the microphone of the electronic terminal.
3. The method of claim 1, wherein step (D) comprises:
reducing the volume of the audio portion including the photographer's voice by X%, and/or increasing the volume of the audio portion including the photographer's voice by Y%, wherein X and Y are constants greater than 0.
4. The method of claim 1, wherein the voice characteristics of the photographer are extracted by a pre-stored media file about the photographer.
5. The method of claim 1, wherein the voice characteristics of the photographer are extracted by a pre-stored media file about the photographer.
6. An apparatus for adjusting a volume of a photographed video file, comprising:
the sound recording unit is used for recording sound by using a microphone of the electronic terminal when the video file is shot;
a detection unit that detects a first audio part of the recorded sound having a volume higher than a first predetermined threshold and/or a second audio part of the recorded sound having a volume lower than a second predetermined threshold, and detects an audio part including the photographer's sound among the first audio parts according to the photographer's sound characteristics and/or an audio part including the photographer's sound among the second audio parts according to the photographer's sound characteristics;
and a sound adjusting unit which reduces a volume of an audio portion including the photographer's sound among the first audio portions and/or increases a volume of an audio portion including the photographer's sound among the second audio portions.
7. The apparatus of claim 6, wherein the sound recording unit comprises:
the earphone connection detection unit is used for detecting whether the electronic terminal is connected with the earphone or not when receiving an instruction of shooting a video file;
the recording unit is used for recording sound by utilizing a microphone of the electronic terminal and a microphone of the earphone when the connection of the electronic terminal and the earphone is detected;
the detection unit detects a first audio part with the sound volume higher than a first preset threshold value in the sound recorded by a microphone of the electronic terminal, and detects an audio part comprising the sound of a photographer in the first audio part according to the sound characteristics of the photographer;
wherein the sound adjusting unit includes:
an inversion processing unit that performs inversion processing on an audio portion corresponding to the audio portion including the photographer's voice among the voices recorded with a microphone of the headphone;
and a superimposition processing unit that superimposes the audio portion subjected to the phase inversion processing on the audio portion including the photographer's voice among the voices recorded with a microphone of the electronic terminal.
8. The apparatus of claim 6, wherein,
the sound adjusting unit decreases the volume of the audio portion including the photographer's sound by X%, and/or increases the volume of the audio portion including the photographer's sound by Y%, where X and Y are constants greater than 0.
9. The apparatus of claim 6, wherein the voice characteristics of the photographer are extracted by a pre-stored media file about the photographer.
10. The apparatus of claim 6, wherein the voice characteristics of the photographer are extracted by a pre-stored media file about the photographer.
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