CN108848411B - System and method for defining program boundaries and advertisement boundaries based on audio signal waveforms - Google Patents
System and method for defining program boundaries and advertisement boundaries based on audio signal waveforms Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/278—Subtitling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
Abstract
The invention discloses a system and a method for defining program boundaries and advertisement boundaries based on audio signal waveforms, which relate to the field of audio and video editing and comprise an audio signal input module, an audio signal waveform monitoring module, an audio signal judgment module, an audio signal waveform pre-judgment module, an audio signal waveform screening module, an audio signal waveform superposition module, an audio and video fragment pre-processing module, an external audio insertion module, an external subtitle insertion module and a multi-window audio and video playing module. The system is convenient to check and analyze in the later period, and useful information is prevented from being deleted by misoperation of the system.
Description
Technical Field
The invention relates to the field of audio and video editing, in particular to a system and a method for defining program boundaries and advertisement boundaries based on audio signal waveforms.
Background
In the live broadcast of sports events or other live television broadcasts, some commemorative live broadcasts need to be recorded, but because a lot of noises exist in the live broadcast process and a lot of tedious advertisements are added, the late watching can be greatly influenced, and the occupied space of the recorded video data can be increased, so that a pure recorded video can be obtained.
For example, application No. CN01808461.3 discloses a system and method for use in a video signal processor for defining program boundaries and commercial boundaries using audio categories. The system includes an audio classification controller that obtains information about audio classes of audio signal segments. Audio categories include categories such as silence, music, noise, and speech. The audio classification controller determines the rate of change of the audio class. The audio classification controller then compares each rate of change of the audio class to a threshold to define program and commercial boundaries, and the system and method do not disclose how to use audio waveforms to define program and commercial boundaries.
For example, CN200910175186.3 discloses a method for performing electric massage by using a music player and an electric massage device. The method comprises the following steps: an electrode input port and an electrode output port are arranged in the music player; storing the audio signal, the waveform signal or the pulse signal in a music player; collecting human body bioelectricity signals by using a sampling electrode, and sending the collected human body bioelectricity signals to a music player through an electrode input port; after receiving the massage triggering instruction, the music player selects a stored audio signal, a waveform signal or a pulse signal, adjusts the selected signal by utilizing the collected human body bioelectricity signal, converts the adjusted signal into an analog signal, and then outputs the analog signal to the massage electrode from the electrode output port; the device does not disclose how to use audio waveforms to define program boundaries and commercial boundaries by outputting massage waves to the user through the massage electrodes.
Disclosure of Invention
It is an object of the present invention to provide a system and method for defining program boundaries and advertisement boundaries based on audio signal waveforms to solve the above-mentioned drawbacks caused by the prior art.
A system for defining program boundaries and advertisement boundaries based on audio signal waveforms comprises an audio signal recording module, an audio signal waveform monitoring module, an audio signal judging module, an audio signal waveform prejudging module, an audio signal waveform screening module, an audio signal waveform superposing module, an audio and video segment preprocessing module, an external audio inserting module, an external subtitle inserting module and a multi-window audio and video playing module, wherein the audio signal recording module is used for recording audio and forming corresponding waveforms according to different audios; the audio signal waveform monitoring module is used for displaying and monitoring the formed waveform in real time; the audio signal judging module judges the type of the audio according to the strength of the waveform, the amplitude, the frequency and the tone of the audio; the audio signal waveform pre-judging module pre-judges the possible running track of the waveform of the next second according to the forming rule of the waveform; the audio signal waveform screening module filters invalid audio according to the type of the audio, retains the valid audio, judges whether the audio changes according to the accurate value of the pre-judged coincidence degree in the audio signal waveform pre-judging module, and if the accurate value of the coincidence degree changes greatly and returns after a period of time, the period of time is considered as an inserted advertisement; the audio signal waveform superposition module is used for leading in the whole section of audio and superposing the section of audio waveform with the original waveform; the audio and video clip preprocessing module is used for processing the input audio and video in the later period and obtaining the desired video according to self requirements; the multi-window audio and video playing module is used for dividing audio or video into a plurality of windows for playing preprocessing.
Preferably, the types of the audio comprise background music sound, human voice, special effect sound and noise, the background music sound, the human voice and the special effect sound are reserved, and the noise is automatically filtered.
Preferably, the audio signal waveform pre-judging module pre-judges valid audio and ignores invalid audio.
Preferably, the audio signal determination module considers that the program is changed if the waveforms of the respective types are suddenly changed collectively in the determination process.
Preferably, the audio/video segment preprocessing module includes a clip of the audio/video segment or an insertion of the audio/video segment or an overlay of the audio/video segment.
Preferably, the external audio insertion module is used for recording external voice-aside tone in real time and forming waveform addition.
Preferably, the external subtitle insertion module is used for adding the subtitle or subtitle introduction to the outside.
Preferably, the system is provided with a recycle bin for storing the filtered noise, invalid audio and deleted audio and video, so that the system is convenient to check and analyze at the later stage, and useful information is prevented from being deleted by misoperation of the system.
Preferably, any of the systems for defining the boundaries of programs and the boundaries of advertisements based on the waveform of an audio signal comprises the following steps:
(1) the system is opened to record the audio signals into the system, the number of corresponding waveforms is generated according to the number of the audio signals, and meanwhile, the waveform monitoring module of the audio signals starts to monitor the waveforms;
(2) the audio signal waveform judging module judges the type of the audio according to the strength, amplitude and frequency of the generated audio signal waveform and the tone of the audio, and the audio signal waveform pre-judging module pre-judges the possible running track of the next second waveform according to the forming rule of the waveform;
(3) the audio signal waveform screening module filters invalid audio according to the type of the audio, the invalid audio is placed in a recycle bin, the valid audio is reserved, and whether the audio changes or not is judged according to the accurate value of the pre-judging contact ratio in the audio signal waveform pre-judging module;
(4) after recording, a multi-window audio/video playing module is used for dividing the audio or video into a plurality of windows for playing preprocessing, and an available audio signal waveform superposition module is used for leading in the whole segment of audio and superposing the segment of audio waveform with the original waveform or clipping, inserting and superposing the audio/video segments;
(5) and checking the content in the recycle bin, and recovering the useful audio information.
The invention has the advantages that: the system is provided with a recycle bin and can temporarily store the noise and the invalid audio, so that the later period can be checked and analyzed, the system can prevent the misoperation of the system from deleting useful information, the video can be subjected to multi-window operation after the recording is finished, the video can be edited, inserted and overlapped, captions and bystander sounds can be added to the video after the completion, and the current mood can be recorded.
Drawings
Fig. 1 is a schematic diagram of module connection according to embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of module connection according to embodiment 2 of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1, a system for defining a program boundary and an advertisement boundary based on an audio signal waveform includes an audio signal recording module, an audio signal waveform monitoring module, an audio signal judging module, an audio signal waveform prejudging module, an audio signal waveform screening module, an audio signal waveform superimposing module, an audio/video segment preprocessing module, an external audio insertion module, an external subtitle insertion module, and a multi-window audio/video playing module, where the audio signal recording module is used for recording audio and forming corresponding waveforms according to different audios; the audio signal waveform monitoring module is used for displaying and monitoring the formed waveform in real time; the audio signal judging module judges the type of the audio according to the strength of the waveform, the amplitude, the frequency and the tone of the audio; the audio signal waveform pre-judging module pre-judges the possible running track of the waveform of the next second according to the forming rule of the waveform; the audio signal waveform screening module filters invalid audio according to the type of the audio, retains the valid audio, judges whether the audio changes according to the accurate value of the pre-judged coincidence degree in the audio signal waveform pre-judging module, if the accurate value of the coincidence degree changes greatly and returns after a period of time, the period of time is considered as an inserted advertisement, and the audio signal waveform superimposing module is used for importing the whole section of audio and superimposing the section of audio waveform with the original waveform; the audio and video clip preprocessing module is used for processing the recorded audio and video in the later period and obtaining the desired video according to self requirements; the multi-window audio and video playing module is used for dividing audio or video into a plurality of windows for playing preprocessing, can segment an audio and video into each window for processing respectively, and can preview the synthesized effect.
It is worth noting that the types of the audio comprise background music sound, human voice, special effect sound and noise, the background music sound, the human voice and the special effect sound are reserved, the noise is automatically filtered, and the filtered sound is put into a recycle bin.
In this embodiment, the audio signal waveform pre-judging module pre-judges valid audio and ignores invalid audio.
In this embodiment, the audio signal determination module considers that the program is changed if the waveforms of the respective types are suddenly changed collectively during the determination, and considers that the time is an inserted advertisement if the exact value of the coincidence degree is changed greatly and returns after a period of time.
In this embodiment, the audio/video segment preprocessing module includes a clip of the audio/video segment, an insertion of the audio/video segment, or an overlay of the audio/video segment.
In this embodiment, the external audio insertion module is configured to record external voice-aside tones in real time and form waveform addition.
In this embodiment, the external subtitle insertion module is configured to add a subtitle or subtitle introduction to the outside.
In this embodiment, the system is provided with a recycle bin for storing the filtered noise, the filtered invalid audio and the deleted audio and video, so that the later-stage checking and analysis can be facilitated, and the useful information can be prevented from being deleted by misoperation of the system.
In addition, any of the described systems for defining program boundaries and advertisement boundaries based on audio signal waveforms comprises the following steps:
(1) the system is opened to record the audio signals into the system, the number of corresponding waveforms is generated according to the number of the audio signals, and meanwhile, the waveform monitoring module of the audio signals starts to monitor the waveforms;
(2) the audio signal waveform judging module judges the type of the audio according to the strength, amplitude and frequency of the generated audio signal waveform and the tone of the audio, and the audio signal waveform pre-judging module pre-judges the possible running track of the next second waveform according to the forming rule of the waveform;
(3) the audio signal waveform screening module filters invalid audio according to the type of the audio, the invalid audio is placed in a recycle bin, the valid audio is reserved, and whether the audio changes or not is judged according to the accurate value of the pre-judging contact ratio in the audio signal waveform pre-judging module;
(4) after recording, a multi-window audio/video playing module is used for dividing the audio or video into a plurality of windows for playing preprocessing, and an available audio signal waveform superposition module is used for leading in the whole segment of audio and superposing the segment of audio waveform with the original waveform or clipping, inserting and superposing the audio/video segments;
(5) and checking the content in the recycle bin, and recovering the useful audio information.
Example 2
As shown in fig. 2, a system for defining a program boundary and an advertisement boundary based on an audio signal waveform includes an audio signal recording module, an audio signal waveform monitoring module, an audio signal judging module, an audio signal waveform prejudging module, an audio signal waveform screening module, an audio signal waveform superimposing module, an audio/video segment preprocessing module, an external audio insertion module, an external subtitle insertion module, and a multi-window audio/video playing module, where the audio signal recording module is used for recording audio and forming corresponding waveforms according to different audios; the audio signal waveform monitoring module is used for displaying and monitoring the formed waveform in real time; the audio signal judging module judges the type of the audio according to the strength of the waveform, the amplitude, the frequency and the tone of the audio; the audio signal waveform pre-judging module pre-judges the possible running track of the waveform of the next second according to the forming rule of the waveform; the audio signal waveform screening module filters invalid audio according to the type of the audio, retains the valid audio, and judges whether the audio changes according to the accurate value of the pre-judgment coincidence degree in the audio signal waveform pre-judging module; if the accurate value of the contact ratio is changed greatly and returns after a period of time, the period of time is considered as an inserted advertisement, and the audio signal waveform superposition module is used for importing the whole section of audio and superposing the section of audio waveform with the original waveform; the audio and video clip preprocessing module is used for processing the recorded audio and video in the later period and obtaining the desired video according to self requirements; the multi-window audio and video playing module is used for dividing audio or video into a plurality of windows for playing preprocessing, can segment an audio and video into each window for processing respectively, and can preview the synthesized effect.
It is noted that the types of the audio include background music sound, human voice, special effect sound and noise, the background music sound, human voice and special effect sound are reserved, and the noise is automatically filtered.
In this embodiment, the audio signal waveform pre-judging module pre-judges valid audio and ignores invalid audio.
In this embodiment, the audio signal determination module considers that the program is changed if the waveforms of the respective types are suddenly changed collectively during the determination, and considers that the time is an inserted advertisement if the exact value of the coincidence degree is changed greatly and returns after a period of time.
In this embodiment, the audio/video segment preprocessing module includes a clip of the audio/video segment, an insertion of the audio/video segment, or an overlay of the audio/video segment.
In this embodiment, the external audio insertion module is configured to record external voice-aside tones in real time and form waveform addition.
In this embodiment, the external subtitle insertion module is configured to add a subtitle or subtitle introduction to the outside.
In addition, any of the described systems for defining program boundaries and advertisement boundaries based on audio signal waveforms comprises the following steps:
(1) the system is opened to record the audio signals into the system, the number of corresponding waveforms is generated according to the number of the audio signals, and meanwhile, the waveform monitoring module of the audio signals starts to monitor the waveforms;
(2) the audio signal waveform judging module judges the type of the audio according to the strength, amplitude and frequency of the generated audio signal waveform and the tone of the audio, and the audio signal waveform pre-judging module pre-judges the possible running track of the next second waveform according to the forming rule of the waveform;
(3) the audio signal waveform screening module filters invalid audio according to the type of the audio, retains the valid audio, and judges whether the audio changes according to the accurate value of the pre-judgment coincidence degree in the audio signal waveform pre-judging module;
(4) after recording, a multi-window audio/video playing module is used for dividing the audio or video into a plurality of windows for playing preprocessing, and an available audio signal waveform superposition module is used for leading in the whole segment of audio and superposing the segment of audio waveform with the original waveform or clipping, inserting and superposing the audio/video segments;
based on the above, the system and the method for defining the program boundary and the advertisement boundary based on the audio signal waveform automatically filter out the noise which does not meet the requirement and the invalid audio by monitoring the waveform of the audio signal in the video, pre-judge the waveform, compare the waveforms before and after, judge the program change if the overlap ratio is greatly different, the system is provided with a recycle bin which can temporarily store the noise and the invalid audio, so that the later period can be conveniently checked and analyzed, the system can prevent the misoperation from deleting the useful information, can perform multi-window operation on the video after the recording is completed, clip, insert and stack the video, can add subtitles and bystander sound to the video after the completion, and can record the mood at that time.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (9)
1. A system for defining program boundaries and advertisement boundaries based on audio signal waveforms comprises an audio signal recording module, an audio signal waveform monitoring module, an audio signal judging module, an audio signal waveform prejudging module, an audio signal waveform screening module, an audio signal waveform superposing module, an audio and video segment preprocessing module, an external audio inserting module, an external subtitle inserting module and a multi-window audio and video playing module, and is characterized in that the audio signal recording module is used for recording audio and forming corresponding waveforms according to different audios; the audio signal waveform monitoring module is used for displaying and monitoring the formed waveform in real time; the audio signal judging module judges the type of the audio according to the strength of the waveform, the amplitude, the frequency and the tone of the audio; the audio signal waveform pre-judging module pre-judges the possible running track of the waveform of the next second according to the forming rule of the waveform; the audio signal waveform screening module filters invalid audio according to the type of the audio, retains the valid audio, judges whether the audio changes according to the accurate value of the pre-judged coincidence degree in the audio signal waveform pre-judging module, and if the accurate value of the coincidence degree changes greatly and returns after a period of time, the period of time is considered as an inserted advertisement; the audio signal waveform superposition module is used for leading in the whole section of audio and superposing the section of audio waveform with the original waveform; the audio and video clip preprocessing module is used for processing the input audio and video in the later period and obtaining the desired video according to self requirements; the multi-window audio and video playing module is used for dividing audio or video into a plurality of windows for playing preprocessing.
2. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: the types of the audio comprise background music sound, human voice, special effect sound and noise, the background music sound, the human voice and the special effect sound are reserved, and the noise is automatically filtered.
3. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: the audio signal waveform pre-judging module pre-judges effective audio and ignores invalid audio.
4. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: and the audio signal judging module considers that the program changes if the waveforms of the types are suddenly changed in a collective mode in the judging process.
5. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: the audio and video clip preprocessing module is used for clipping the audio and video clips or inserting the audio and video clips or superposing the audio and video clips.
6. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: the external audio insertion module is used for recording external voice-aside in real time and forming waveform addition.
7. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: and the external subtitle inserting module is used for adding the subtitle or subtitle introduction to the outside.
8. The system of claim 1, wherein the audio signal waveform is used to define program boundaries and advertisement boundaries, and wherein: the system is provided with a recycle bin and is used for storing the filtered noise, invalid audio and deleted audio and video, so that the later-stage checking and analysis are facilitated, and the system is prevented from being operated by mistake to delete useful information.
9. A system for defining program boundaries and commercial boundaries based on audio signal waveforms as claimed in any one of claims 1 to 8, wherein: the method comprises the following steps:
(1) the system is opened to record the audio signals into the system, the number of corresponding waveforms is generated according to the number of the audio signals, and meanwhile, the waveform monitoring module of the audio signals starts to monitor the waveforms;
(2) the audio signal waveform judging module judges the type of the audio according to the strength, amplitude and frequency of the generated audio signal waveform and the tone of the audio, and the audio signal waveform pre-judging module pre-judges the possible running track of the next second waveform according to the forming rule of the waveform;
(3) the audio signal waveform screening module filters invalid audio according to the type of the audio, the invalid audio is placed in a recycle bin, the valid audio is reserved, and whether the audio changes or not is judged according to the accurate value of the pre-judging contact ratio in the audio signal waveform pre-judging module;
(4) after recording, a multi-window audio/video playing module is used for dividing the audio or video into a plurality of windows for playing preprocessing, and an available audio signal waveform superposition module is used for leading in the whole segment of audio and superposing the segment of audio waveform with the original waveform or clipping, inserting and superposing the audio/video segments;
(5) and checking the content in the recycle bin, and recovering the useful audio information.
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| CN113810766B (en) * | 2021-11-17 | 2022-02-08 | 深圳市速点网络科技有限公司 | Video clip combination processing method and system |
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