CN108322816B - Method and system for playing background music in broadcast program - Google Patents

Method and system for playing background music in broadcast program Download PDF

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CN108322816B
CN108322816B CN201810060166.0A CN201810060166A CN108322816B CN 108322816 B CN108322816 B CN 108322816B CN 201810060166 A CN201810060166 A CN 201810060166A CN 108322816 B CN108322816 B CN 108322816B
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background music
playing
music
time
beat
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CN108322816A (en
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周南
何炜
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Beijing Infomedia Technology Co ltd
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Beijing Infomedia Technology Co ltd
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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
    • H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • 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
    • H04N21/482—End-user interface for program selection
    • H04N21/4825—End-user interface for program selection using a list of items to be played back in a given order, e.g. playlists
    • 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
    • H04N21/81—Monomedia components thereof
    • H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
    • H04N21/8113—Monomedia components thereof involving special audio data, e.g. different tracks for different languages comprising music, e.g. song in MP3 format

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The invention provides a method and a system for playing background music in a broadcast program, wherein the method comprises the following steps: identifying playing time information, a BPM value and a beat of currently played background music, wherein the playing time information comprises the moment of starting playing and the playing duration; and obtaining the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, wherein the beat of the next background music is consistent with the beat of the currently played background music. The invention obtains the time length of each bar of the audio by identifying the BPM value and the beat of the music. The music playback is started on the tempo using this information. The music is smoothly and continuously connected, and the circular playing is seamless and complete.

Description

Method and system for playing background music in broadcast program
Technical Field
The present invention relates to the technical field of music playing, and in particular, to a method and a system for playing background music in a broadcast program.
Background
In a broadcast program, when broadcasting news or speaking in the program, a host usually needs to play background music with a fixed beat according to the rhythm of the speed of speech. The playing of the background music can prevent the occurrence of the idle playing and prevent the programs from being too monotonous.
In actual operation, the host can choose to play one piece of music in a loop, or play multiple pieces of music randomly or sequentially. If the tempo of the music and the tempo of the speech are in time, the listener will hear it comfortably and pleasantly.
However, the existing way of playing background music is usually paused or switched by the host, depending on experience and feeling, and when the host prepares to stop the current music and play the next music, if the music being played is stopped immediately, it is possible that the music will stop at any position: the program is suddenly stopped, and the two programs are unsmooth to connect, namely, the strong beat, the weak beat and the interval between the two beats are possible. For example, the music played at 3/4 is a jump wipe, a cycle of jump wipes, and if a jump is just sung, a jump to other music breaks the original rhythm.
Disclosure of Invention
The present invention provides a method and system for playing back background music in a broadcast program that overcomes or at least partially solves the above-mentioned problems.
According to an aspect of the present invention, there is provided a method for playing background music in a broadcast program, including:
s1, identifying the playing time information, BPM value and beat of the currently played background music, wherein the playing time information comprises the time of starting playing and the playing duration;
and S2, obtaining the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, wherein the beat of the next background music is consistent with the beat of the currently played background music.
Preferably, the step S1 specifically includes:
identifying the BPM value and the beat of the currently played background music;
setting a starting bar, an ending bar and playing time of the background music according to the total time and the beat of the background music for the currently played background music;
and taking the moment and the playing time length of the current background music as the playing time information.
Preferably, before the step S1, the method further includes:
selecting a certain amount of music in a music library, identifying the BPM value and the beat of each piece of music in the certain amount of music, and adding the music of which the approximation degree with a preset BPM value exceeds a threshold value and is the same as the preset beat into a play list so as to select the next piece of background music from the play list.
Preferably, in the step S2, obtaining a start time of the next background music according to the playing time information of the currently played background music, the BPM value, and the time of selecting the next background music, specifically includes:
s2.1, acquiring the duration of each bar of the currently played background music according to the BPM value and the beat number of each bar of the currently played background music;
s2.2, respectively taking the moment when the current background music starts to be played and the moment when the next background music is selected to be played as a first moment and a second moment;
and S2.3, acquiring the time for starting playing the next background music according to the difference value of the first time and the second time and the time length of each bar of the current background music.
Preferably, the step S2.1 specifically obtains the length of each bar of the currently played background music through the following formula:
T＝(60/b)*n
wherein, T represents the length of each section of the background music played currently; b represents the BPM value of the currently played background music; n denotes the number of beats per bar of the background music currently played.
Preferably, the step S2.3 specifically obtains the time when the next background music starts to be played according to the following formula:
Ts＝{[(T2–T1)mod T]+1}×T+T1
wherein, TsIndicating the moment when the next background music starts to be played; t is1Representing a first time instant; t is2Representing a second time instant; mod represents the modulo operation.
Preferably, the step S2 is followed by:
and inquiring the preset playing mode of the background music, and when the playing mode of the background music is the first mode, fading out and stopping the previous background music after the next background music is played.
Preferably, the step S2 is followed by:
and inquiring the preset playing mode of the background music, and keeping the volume of the previous background music unchanged when the playing mode of the background music is the second mode.
According to another aspect of the present invention, there is also provided a system for playing back background music in a broadcast program, including:
the identification module is used for identifying the playing time information, BPM value and beat of the currently played background music, wherein the playing time information comprises the time for starting playing and the playing duration;
and the playing module is used for obtaining the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, wherein the beat of the next background music is consistent with the beat of the currently played background music.
Preferably, the playing method further includes:
the music processing device comprises a list module and a music processing module, wherein the list module is used for selecting a certain amount of music in a music library, identifying the BPM value and the beat of each piece of music in the certain amount of music, and adding the music of which the approximation degree with a preset BPM value exceeds a threshold value and is the same as the preset beat into a play list so as to select the next piece of background music from the play list.
The method and the system for playing the background music in the broadcast program provided by the invention obtain the time length of each bar of the audio by identifying the BPM value and the beat of the music. The music playback is started on the tempo using this information. The music is smoothly and continuously connected, and the circular playing is seamless and complete.
Drawings
Fig. 1 is a flowchart illustrating a method for playing background music according to an embodiment of the present invention;
fig. 2 is a functional block diagram of a background music playing system according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In order to overcome the above problems in the prior art, an embodiment of the present invention provides a method for playing background music in a broadcast program, which, with reference to fig. 1, includes:
s1, identifying the playing time information, BPM value and beat of the currently played background music, wherein the playing time information comprises the time of starting playing and the playing duration;
and S2, obtaining the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, wherein the beat of the next background music is consistent with the beat of the currently played background music.
It should be noted that background music played in a broadcast program is generally music with a fixed beat, and the music is composed of a certain number of notes, and the notes form bars according to the beat. For example, 4/4 beats, representing 4 beats per bar at 1/4 notes. The duration of each bar is determined by the note duration and the number of beats, and in a piece of music, the duration of each bar is fixed and contains the complete beats.
The BPM value (full name of Beat Per Minute) of music is the total number of song beats in one Minute, i.e., the drum sounds several times in one Minute, and the unit of this number is the BPM value. For example, if a House dance music drum beats 124 times in one minute, the music will have 124 BPM. In the embodiment of the invention, the BPM value can be identified by using a watch or a stopwatch for timing and slowly counting drum sounds in a manual mode; it can also be calculated by some machine or mixer for calculating BPM value, such as the mixer of Pioneer DJM-500, i.e. with built-in BPM value counter, etc.
The embodiment of the invention identifies the BPM value and the beat of the music, combines the moment when the current music starts to play, and determines the playing time of the next music, so that the music is always in the beat, the connection between the music is smooth and continuous, and the circular playing is seamless and complete.
On the basis of the foregoing embodiments, step S1 specifically includes:
identifying the BPM value and the beat of the currently played background music;
setting a starting bar, an ending bar and playing time of the background music according to the total time and the beat of the background music for the currently played background music;
and taking the moment and the playing time length of the current background music as playing time information.
It should be noted that by analyzing the waveform diagram of music (the abscissa is time, and the ordinate is amplitude), the duration of each beat of music and the start time and the end time of each beat can be obtained, and further the start bar and the end bar of background music can be obtained.
On the basis of the foregoing embodiments, before step S1, the playback method further includes:
selecting a certain amount of music in a music library, identifying the BPM value and the beat of each piece of music in the certain amount of music, and adding the music of which the approximation degree with a preset BPM value exceeds a threshold value and is the same as the preset beat into a play list so as to select the next piece of background music from the play list.
As is well known to those skilled in the art, a broadcaster typically prepares a library of songs from which the broadcaster selects background music empirically and perceptually. In order to conveniently select the background music, the embodiment of the invention can select a certain amount of music from the music library in advance to be added into the play list by combining the BPM value and the beat, thereby narrowing the range of selecting the background music by the main player, and the beat of the selectable background music is similar to the BPM value without sharp feeling after switching.
On the basis of the foregoing embodiments, in step S2, obtaining a start time of the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, specifically includes:
s2.1, obtaining the duration of each section of the currently played background music according to the BPM value and the beat number of each section of the currently played background music, and specifically obtaining the duration of each section of the currently played background music through the following formula:
T＝(60/b)*n
wherein, T represents the length of each section of the background music played currently; b represents the BPM value of the currently played background music; n denotes the number of beats per bar of the background music currently played, and 60 denotes 60 seconds.
S2.2, respectively taking the moment when the current background music starts to be played and the moment when the next background music is selected to be played as a first moment and a second moment;
and S2.3, acquiring the time for starting playing the next background music according to the difference value between the first time and the second time and the time length of each bar of the current background music.
Step S2.3 specifically obtains the time when the next background music starts playing through the following formula:
Ts＝{[(T2–T1)mod T]+1}×T+T1
wherein, TsIndicating the moment when the next background music starts to be played; t is1Representing a first time instant; t is2Representing a second time instant; mod represents the modulo operation. T is2And T1The result of the modulo operation of the difference value and T represents that several complete measures are played from the beginning of playing the current background music to the selective playing of the next background music, the time length of integral multiple of the complete time length of the measure nearest to the selective playing of the next background music is obtained by adding 1 to the result and then multiplying the result by the time length of the measure, and the time length is added with the first time to obtain the time of starting playing the next background music.
On the basis of the above embodiments, step S2 is followed by:
and inquiring the preset playing mode of the background music, and when the playing mode of the background music is the first mode, fading out and stopping the previous background music after the next background music is played. It should be noted that the fade-out stopping operation means gradually decreasing the volume of the music until the volume is decreased to 0, and this process can be completed within several seconds, and the play form of the music can be enriched by the fade-out stopping operation, and a complete paragraph feeling is brought.
On the basis of the above embodiments, step S2 is followed by:
and inquiring the preset playing mode of the background music, and keeping the volume of the previous background music unchanged when the playing mode of the background music is the second mode. The situation that the volume of the previous background music is kept unchanged, so that the sound is suitable for the situation that the applause, the laughter and other effect sounds are inserted in the broadcast is adopted.
It should be noted that the playing mode of the present invention further includes single-track loop playing, that is, the next background music is the same as the previous background music, in practical operation, the beginning bar and the ending bar of the background music can be preset to form a loop music segment, so that the loop playing is seamlessly connected immediately after the previous music segment is ended.
According to another aspect of the present invention, there is also provided a system for playing back background music in a broadcast program, referring to fig. 2, including:
the identification module 201 is configured to identify playing time information, a BPM value, and a beat of currently played background music, where the playing time information includes a time when playing starts and a playing duration;
the playing module 202 is configured to obtain a starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and a time of selecting the time of playing the next background music, where a beat of the next background music is consistent with a beat of the currently played background music.
The playing system of the embodiment of the invention determines the playing time of the next piece of music by identifying the BPM value and the beat of the music and combining the moment when the current piece of music starts to be played, so that the music is always in the beat, the connection between the pieces of music is smooth and continuous, and the circular playing is seamless and complete.
On the basis of the above embodiment, the playing system further includes:
the music processing device comprises a list module and a music processing module, wherein the list module is used for selecting a certain amount of music in a music library, identifying the BPM value and the beat of each piece of music in the certain amount of music, and adding the music of which the approximation degree with a preset BPM value exceeds a threshold value and is the same as the preset beat into a play list so as to select the next piece of background music from the play list.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods of the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. A method for playing background music in a broadcast program is characterized by comprising the following steps:
s1, identifying the playing time information, BPM value and beat of the currently played background music, wherein the playing time information comprises the time of starting playing and the playing duration;
s2, obtaining the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, wherein the beat of the next background music is consistent with the beat of the currently played background music;
in step S2, the method for obtaining the starting time of the next background music according to the playing time information of the currently played background music, the BPM value, and the time of selecting the next background music includes the following steps:
s2.1, acquiring the duration of each bar of the currently played background music according to the BPM value and the beat number of each bar of the currently played background music;
s2.2, respectively taking the moment when the current background music starts to be played and the moment when the next background music is selected to be played as a first moment and a second moment;
s2.3, acquiring the time for starting playing the next background music according to the difference value between the first time and the second time and the time length of each bar of the current background music;
in step S2.1, the length of each bar of the background music currently played is obtained by the following formula:
T＝(60/b)*n
wherein, T represents the length of each section of the background music played currently; b represents the BPM value of the currently played background music; n represents the number of beats per section of background music currently played;
step S2.3 specifically obtains the time when the next background music starts to be played by the following formula:
Ts＝{[(T2–T1)mod T]+1}×T+T1
wherein, TsIndicating the moment when the next background music starts to be played; t is1Representing a first time instant; t is2Representing a second time instant; mod represents the modulo operation.
2. The playback method according to claim 1, wherein the step S1 specifically includes:
identifying the BPM value and the beat of the currently played background music;
setting a starting bar, an ending bar and playing time of the background music according to the total time and the beat of the background music for the currently played background music;
and taking the moment and the playing time length of the current background music as the playing time information.
3. The playback method as claimed in claim 1, wherein before the step S1, the method further comprises:
selecting a certain amount of music in a music library, identifying the BPM value and the beat of each piece of music in the certain amount of music, and adding the music of which the approximation degree with a preset BPM value exceeds a threshold value and is the same as the preset beat into a play list so as to select the next piece of background music from the play list.
4. The playback method as claimed in claim 1, wherein the step S2 is followed by further comprising:
and inquiring the preset playing mode of the background music, and when the playing mode of the background music is the first mode, fading out and stopping the previous background music after the next background music is played.
5. The playback method as claimed in claim 1, wherein the step S2 is followed by further comprising:
and inquiring the preset playing mode of the background music, and keeping the volume of the previous background music unchanged when the playing mode of the background music is the second mode.
6. A system for playing back background music in a broadcast program, comprising:
the identification module is used for identifying the playing time information, BPM value and beat of the currently played background music, wherein the playing time information comprises the time for starting playing and the playing duration;
the playing module is used for obtaining the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, wherein the beat of the next background music is consistent with the beat of the currently played background music;
the playing module obtains the starting time of playing the next background music according to the playing time information and the BPM value of the currently played background music and the time of selecting the next background music, and the playing method specifically comprises the following steps:
s2.1, acquiring the duration of each bar of the currently played background music according to the BPM value and the beat number of each bar of the currently played background music;
s2.2, respectively taking the moment when the current background music starts to be played and the moment when the next background music is selected to be played as a first moment and a second moment;
s2.3, acquiring the time for starting playing the next background music according to the difference value between the first time and the second time and the time length of each bar of the current background music;
in step S2.1, the length of each bar of the background music currently played is obtained by the following formula:
T＝(60/b)*n
wherein, T represents the length of each section of the background music played currently; b represents the BPM value of the currently played background music; n represents the number of beats per section of background music currently played;
step S2.3 specifically obtains the time when the next background music starts to be played by the following formula:
Ts＝{[(T2–T1)mod T]+1}×T+T1
wherein, TsIndicating the moment when the next background music starts to be played; t is1Representing a first time instant; t is2Representing a second time instant; mod represents the modulo operation.
7. The playback system of claim 6, further comprising:
the music processing device comprises a list module and a music processing module, wherein the list module is used for selecting a certain amount of music in a music library, identifying the BPM value and the beat of each piece of music in the certain amount of music, and adding the music of which the approximation degree with a preset BPM value exceeds a threshold value and is the same as the preset beat into a play list so as to select the next piece of background music from the play list.
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