CN1489369A - Karaoke making method and playing method for wireless network and wireless hand-held device - Google Patents
Karaoke making method and playing method for wireless network and wireless hand-held device Download PDFInfo
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- CN1489369A CN1489369A CNA03140121XA CN03140121A CN1489369A CN 1489369 A CN1489369 A CN 1489369A CN A03140121X A CNA03140121X A CN A03140121XA CN 03140121 A CN03140121 A CN 03140121A CN 1489369 A CN1489369 A CN 1489369A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000012634 fragment Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
In the method, parameters of words of a song are obtained by determining starting time and duration of each word in song as well as shown time and position in procedure of playing music file in MIDI format. Parameters of photograph are obtained by determining shown time and position of photograph with relevant image being compressed. Data blocks are built by using the said parameters to create Kara-Ok file suitable to wireless network and hand hold device. File manipulation function opens a Kara-Ok file created, decompressing image, reading out MIDI data blocks and playing music file. Reading out remanent file data block, determining and displaying data block is carried out in sequence till entire music of a song is completed played. The file generated in the invention occupies small space, suitable for wireless network PDA, handset etc to play Kara-Ok file.
Description
Technical field
The present invention relates to a kind of manufacture method and player method of Karaoke, relate in particular to a kind of manufacture method and player method that is applicable to the Karaoke of wireless network and radio hand-held equipment.
Background technology
Karaoke is the entertainment way that a kind of people like and take like a shot.In numerous entertainment way, it is flourishing long time to play Karaoka, and influence power is extremely wide.If Karaoke is transmitted by wireless network, a kind of important form of linking up and getting in touch that people are then many again.Simultaneously, if Karaoke can be incorporated in the radio hand-held equipments such as mobile phone, PDA, then can allow more people experience the enjoyment of Karaoke whenever and wherever possible, easily.
Traditional music will be recorded into disc, audiotape or CD, the recording studio of musician, listener and the audio mixer of the various specialties of needs and musical instrument, radio reception, sound pick-up outfit and the standard of various costlinesses.Earlier melody is become arrangement and accompany, record into master tape at last for the player.Computer is popularized now, available music software comes music, with MIDI replace musical instrument, the musician plays, with the MP3 compressed software tens of head, hundreds of head even thousands of first song are compressed into a slice DVD, write the literal lyrics with audio-visual software for editing, carry out after the Synchronous Processing, can weave into the audio-visual Karaoke that people like, make VCD/DVD with CD writer at last.Be equipped with special a series of audio and video equipments such as VCD/DVD broadcast, this is the configuration mode of the main flow of current Karaoke.Along with development of computer, Kara OK function also can be realized by the form that VCD/DVD plays or video file is play on the multimedia PC simultaneously.
But generally speaking, aforesaid way is to satisfy the professional effect of music-lover, all there is quite high requirement soft, hardware configuration aspect that Karaoke is made and play, therefore traditional Karaoke can only be carried out in some places specific, that relevant configuration is arranged, and present radio hand-held equipment can not reach the requirement of this configuration.Simultaneously, the CPU disposal ability of existing radio hand-held equipment is lower, memory headroom is less, power consumption can not be too high, and wireless bandwidth is limited.And the system memory space running space big, that need that VCD/DVD that makes by this professional effect and video file take is also big, to the requirement height of system configuration, therefore be not suitable in transmitted over wireless networks, and be not suitable for or may on current radio hand-held equipment, do not play.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method and player method of Karaoke, make its Karaoke file data of making the back generation on wireless communication networks, to transmit, and can on radio hand-held equipment, receive and play.
The present invention is achieved by the following technical programs:
A kind of Karaoke that is used for wireless network and radio hand-held equipment provided by the invention, its file comprises:
Be used to define the file header data block of described Karaoke file-related information;
Be used to deposit the image data block of view data;
Be used to define the image displaying block that image shows situation;
Be used to define the captions displaying block that captions show situation;
Be used to define the block of information of music information;
Be used to deposit the MIDI data block of MIDI music data;
Each data block has comprised data type, data length and data field, and each field data all adopts network byte order BIG-ENDIAN storage, so that can be in transmitted over wireless networks.
The Karaoke that is used for wireless network and radio hand-held equipment of the present invention, each data block is as follows in its file:
(1) file header data block
Data type: `AHDR`
Data length: 33
Data field:
Fileversion number 3 bytes
Playing duration (second) 2 bytes
Image size 2 bytes
Width 2 bytes
Height 2 bytes
(2) image data block
Data type: `IMAG`
Data length: n+2
Data field:
Image identification number 2 bytes
View data n byte
(3) image displaying block
Data type: `DISI`
Data length: 10
Data field:
Image identification number 2 bytes
Demonstration time (millisecond) 4 bytes
Displaing coordinate X 2 bytes
Displaing coordinate Y 2 bytes
(4) captions displaying block
Data type: `DIST`
Data length: n*4+16
Data field:
Captions identification number 2 bytes
Begin demonstration time (millisecond) 4 bytes
Play zero-time (millisecond) 4 bytes
Displaing coordinate X 2 bytes
Displaing coordinate Y 2 bytes
Number of words 2 bytes
Caption content n*2 byte (unicode)
Literal time-delay (millisecond) n*2 byte (delay duration of each word)
(5) block of information
Data type: `INFO`
Data length: 188
Data field:
Title 8*2 byte
Singer 18*2 byte
Author 18*2 byte
Copyright information 18*2 byte
Other information 32*2 byte
(6) MIDI data block
Data type: `MIDI`
Data length: the size of MIDI file
Data field: from the MIDI file.
The described manufacture method that is used for the Karaoke of wireless network and radio hand-held equipment provided by the invention may further comprise the steps:
A. based on selected reference format MIDI music notation file, obtain zero-time and the duration of each word in playing process in every lyrics successively according to the beat number of music score and the unit interval of each beat; Add up duration of every each word of the lyrics draws the playing duration time of the whole sentence lyrics; The demonstration time of the whole sentence lyrics then adds that by the playing duration time of the whole sentence lyrics empirical value tries to achieve;
B. according to music artistic conception or producer's needs, select the background image file sequence of a picture group sheet as the Karaoke music, determine DISPLAY ORDER, displaing coordinate and the want corresponding lyrics content of each picture in playing process, according to step a obtain demonstration time of the corresponding lyrics, determine the demonstration time of picture in playing process, to reach the effect of picture and synchronous lyrics;
C. the lyrics among the step a are determined its display position in corresponding picture;
D. repeating step a～c finishes until the operation of the whole music of song, and the demonstration time of every the lyrics that add up is determined the reproduction time of the whole music of song;
E. the described picture of step b is carried out image compression;
F. generate the described file that is used for the Karaoke of wireless network and radio hand-held equipment, that is:
Parameter among parameter that obtains with steps d and the step b in the selected image file essential information makes up the file header data block;
With picture construction video data block compressed among the step e;
With the parameter design of graphics determined among the step b as displaying block;
Make up the captions displaying block with the parameter of determining among step a and the step c;
Basic document and content with the MIDI file make up block of information and MIDI data block.
In the manufacture method of the present invention, the image file among the described step b can be BMP, JPG or PNG image file format; Can adopt the zlib compression to image among the described step f; Empirical value among the described step b can be 0.3～0.6.
The player method that is used for the Karaoke of wireless network and radio hand-held equipment of the present invention may further comprise the steps:
A. open a described file that is used for the Karaoke of wireless network and radio hand-held equipment by the file operation function;
B. the view data of " video data block " in the extraction document, and to this " view data " decompress(ion);
C. extract MIDI data field in " MIDI data block " as the MIDI file, and play this MIDI file;
D. read the remaining file data blocks after step b and step c processing successively, and data block is judged:, then show this image if this data block is the image displaying block; Otherwise, show captions by the data field requirement of captions displaying block, wait for the fixed time, and begin to play next word, finish up to these lyrics.
E. repeating step d up to each data block of handling successively in the file, plays and finishes.
In the player method of the present invention, can adopt the zlib decompress(ion) to view data among the described step b.
The present invention compared with prior art has significant beneficial effect.Usually traditional Karaoke file based on VCD/DVD etc. all more than the 1M byte, needs other Karaoke or video playback instrument, only is suitable at the karaoke equipment of special use or plays on PC.The Karaoke file of producing with the manufacture method that is used for the Karaoke of wireless network and radio hand-held equipment provided by the invention, can be limited in about 40K～50K byte, be fit to very much, and can send to the other side's mobile phone by the wireless network download or by mobile phone by wireless network transmissions; Can make radio hand-held equipments such as PDA, mobile phone, PDA mobile phone realize the broadcast of Karaoke of the present invention with the player method that is used for the Karaoke of wireless network and radio hand-held equipment provided by the invention.
Description of drawings
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing:
Fig. 1 is the manufacture method flow chart that is used for the Karaoke of wireless network and radio hand-held equipment of the present invention;
Fig. 2 is the player method flow chart that is used for the Karaoke of wireless network and radio hand-held equipment of the present invention;
Fig. 3 is that name is called the picture of " background image 1 " in the embodiment of the invention;
Fig. 4 is the result of broadcast figure of the fragment in the embodiment of the invention.
Embodiment
With song " colorful time " is that embodiment describes manufacture method and the player method that the present invention is used for the Karaoke of wireless network and radio hand-held equipment.
Figure 1 shows that the present invention is used for the manufacture method of the Karaoke of wireless network and radio hand-held equipment, its step is as follows:
A. " thirsting for a smile " with the lyrics in the song " colorful time " is example, according to the reference format MIDI file of song, obtain zero-time and the duration of each word in playing process in these lyrics successively according to the beat number of music score and the unit interval of each beat; Add up duration of each word can obtain the playing duration time of the whole sentence of these lyrics.Because the lyrics normally show broadcast more earlier in the Karaoke, therefore the playing duration time of whole sentence adds that an empirical value of 0.5 second then draws the demonstration time of these lyrics.The demonstration time that begins that draws these lyrics thus is the 710th millisecond, and playing zero-time is the 715th millisecond, and the delay duration of each word is respectively 371,555,185,185,185,740 milliseconds.
B. the picture that selected name shown in Figure 3 is called " background image 1 " is the pairing picture of these lyrics, specify the upper left corner X coordinate and the Y coordinate of this picture display image to be 10, determine that according to the demonstration time of the lyrics among the step a demonstration time of this picture is 5000 milliseconds, this time specifies in the image displaying block;
C. the above-mentioned lyrics being specified its upper left corner X coordinate that shows captions in corresponding picture " background image 1 " is 20, shows that the upper left corner Y coordinate of captions is 90;
D. remaining lyrics repeating step a～c in the song is finished to whole first song operation, the demonstration time of every the lyrics that add up determines that the reproduction time of whole first song is 69 seconds;
E. the described picture of step b is carried out image zlib compression;
F. generate the described file that is used for the Karaoke of wireless network and radio hand-held equipment, that is:
Make up the file header data block with the parameter in the selected image file essential information among the parameter that calculates in the steps d and the step b, its content comprises the file size of reproduction time, each image, the width of image, the height of image;
With picture construction video data block compressed among the step e, its content is compressed view data;
To calculate definite parameter design of graphics among the step b as displaying block, its content comprises the demonstration time and the displaing coordinate of image;
Make up the captions displaying block to calculate the parameter of determining among step a and the step c, its content comprises beginning demonstration and playing zero-time of lyrics content, lyrics displaing coordinate and the lyrics;
Basic document and content with the MIDI file that is written into make up block of information and MIDI data block, and the content of block of information comprises title, singer, author, copyright information; The content of MIDI data block is MIDI music file data.
According to the song that is used for wireless network and radio hand-held equipment " colorful time " the Karaoke file that above-mentioned manufacture method generates, wherein two lyrics are " thirsting for a smile " and the file fragment of " expecting a burst of spring breeze " following (wherein the part behind " ∥ " symbol is the note of one's own profession first half):
(1) file header data block
AHDR ∥ data type identifier represents that following content is the file header data block
33 ∥ data lengths
1 ∥ fileversion number
69 ∥ reproduction times are unit with the second
The file size of 17038 each image of ∥ is a unit with the byte
The width of 120 ∥ images is a unit with the number of pixels
The height of 133 ∥ images is a unit with the number of pixels
(2) video data block
Content below the IMAG ∥ data type identifier, expression is a video data block
The data length of 17040 ∥ whole data block
1 ∥ image identification number is represented the 1st width of cloth image
The view data of the background image 1 that { view data of image 1 } ∥ is selected is compressed through zlib
(3) image displaying block
Content below the DISI ∥ data type identifier, expression is the image displaying block
10 ∥ data lengths
1 ∥ image identification number shows and selects the 1st video data block
The demonstration time (millisecond) of 5000 ∥ images
The upper left corner X coordinate of 10 ∥ display images
The upper left corner Y coordinate of 10 ∥ display images
(4) captions displaying block ()
Content below the DIST ∥ data type identifier, expression is the captions displaying block
40 ∥ data lengths
1 ∥ captions identification number is indicated as the 1st captions
The demonstration time that begins (millisecond) of 710 ∥ captions
Zero-time (millisecond) play in 715 ∥ captions
20 ∥ show the upper left corner X coordinate of captions
90 ∥ show the upper left corner Y coordinate of captions
6 ∥ show the number of words of captions
Thirst for a smile ∥ caption content
The delay duration (millisecond) of 371,555,185,185,185,740 each word of ∥ captions
(5) captions displaying block (two)
Content below the DIST ∥ data type identifier, expression is the captions displaying block
40 ∥ data lengths
2 ∥ captions identification numbers are indicated as the 1st captions
The demonstration time that begins (millisecond) of 710 ∥ captions
Zero-time (millisecond) play in 2940 ∥ captions
60 ∥ show the upper left corner X coordinate of captions
100 ∥ show the upper left corner Y coordinate of captions
6 ∥ show the number of words of captions
Expect a burst of spring breeze ∥ caption content
The delay duration (millisecond) of 371,555,185,185,185,371 each word of ∥ captions
(6) block of information
Content below the INFO ∥ data type identifier, expression is a block of information
188 ∥ data lengths
Colorful time ∥ music title
Beam is towards big ∥ singer
Chen Shan girl ∥ author
Anyka Inc. ∥ copyright information
These works are only done demonstration and are used other information of ∥
(7) MIDI data block
Content below the MIDI ∥ data type identifier, expression is the MIDI data block
The size of 16150 ∥ MIDI files
The MIDI music file data of { MIDI file data } ∥ " colorful time "
Figure 2 shows that the present invention is used for the player method of the Karaoke of wireless network and radio hand-held equipment, with above-mentioned two lyrics in song " colorful time " the Karaoke file is that " thirsting for a smile " and the fragment of " expecting a burst of spring breeze " are example, and its step is as follows:
A. open an above-mentioned file that is used for song " colorful time " Karaoke of wireless network and radio hand-held equipment by the file operation function;
B. the view data of " video data block " in the extraction document, and to this " view data " decompress(ion);
C. extract MIDI data field in " MIDI data block " as the MIDI file, and play this MIDI file;
D. read the remaining file data blocks after step b and step c handle successively, and data block is judged: the data block that reads is the image displaying block in the fragment, then by the image of its data field requirement demonstration as shown in Figure 3; Then the data field requirement by captions displaying block () shows captions, waits for the fixed time, and begins to play next word, finishes up to these lyrics.
E. repeating step d, the data block that reads is captions displaying block (two), then shows captions by its data field requirement.
The result of broadcast of above-mentioned file fragment as shown in Figure 4.
Claims (8)
1, a kind of Karaoke that is used for wireless network and radio hand-held equipment is characterized in that, the file of described Karaoke comprises:
Be used to define the file header data block of described Karaoke file-related information;
Be used to deposit the image data block of view data;
Be used to define the image displaying block that image shows situation;
Be used to define the captions displaying block that captions show situation;
Be used to define the block of information of music information;
Be used to deposit the MIDI data block of MIDI music data;
Each data block has comprised data type, data length and data field, and each field data all adopts network byte order BIG-ENDIAN storage.
2, the Karaoke that is used for wireless network and radio hand-held equipment according to claim 1 is characterized in that, described each data block is as follows:
(1) file header data block
Data type: `AHDR`
Data length: 33
Data field:
Fileversion number 3 bytes
Playing duration (second) 2 bytes
Image size 2 bytes
Width 2 bytes
Height 2 bytes
(2) image data block
Data type: `IMAG`
Data length: n+2
Data field:
Image identification number 2 bytes
View data n byte
(3) image displaying block
Data type: `DISI`
Data length: 10
Data field:
Image identification number 2 bytes
Demonstration time (millisecond) 4 bytes
Displaing coordinate X 2 bytes
Displaing coordinate Y 2 bytes
(4) captions displaying block
Data type: `DIST`
Data length: n*4+16
Data field:
Captions identification number 2 bytes
Begin demonstration time (millisecond) 4 bytes
Play zero-time (millisecond) 4 bytes
Displaing coordinate X 2 bytes
Displaing coordinate Y 2 bytes
Number of words 2 bytes
Caption content n*2 byte (unicode)
Literal time-delay (millisecond) n*2 byte (delay duration of each word)
(5) block of information
Data type: `INFO`
Data length: 188
Data field:
Title 8*2 byte
Singer 18*2 byte
Author 18*2 byte
Copyright information 18*2 byte
Other information 32*2 byte
(6) MIDI data block
Data type: `MIDI`
Data length: the size of MIDI file
Data field: from the MIDI file.
3, the described manufacture method that is used for the Karaoke of wireless network and radio hand-held equipment of claim 1 is characterized in that, may further comprise the steps:
A. based on selected reference format MIDI music notation file, obtain zero-time and the duration of each word in playing process in every lyrics successively according to the beat number of music score and the unit interval of each beat; Add up duration of every each word of the lyrics draws the playing duration time of the whole sentence lyrics; The demonstration time of the whole sentence lyrics then adds that by the playing duration time of the whole sentence lyrics empirical value tries to achieve;
B. select the background image file sequence of a picture group sheet as the Karaoke music, determine DISPLAY ORDER, displaing coordinate and the want corresponding lyrics content of each picture in playing process, according to step a obtain demonstration time of the corresponding lyrics, determine the demonstration time of picture in playing process;
C. the lyrics among the step a are determined its display position in corresponding picture;
D. repeating step a～c finishes until the operation of the whole music of song, and the demonstration time of every the lyrics that add up is determined the reproduction time of the whole music of song;
E. the described picture of step b is carried out image compression;
F. generate the described file that is used for the Karaoke of wireless network and radio hand-held equipment, that is:
Make up the file header data block with the parameter in the selected image file essential information among the parameter that calculates in the steps d and the step b;
With picture construction video data block compressed among the step e;
To calculate definite parameter design of graphics among the step b as displaying block;
Make up the captions displaying block to calculate the parameter of determining among step a and the step c;
Basic document and content with the MIDI file make up block of information and MIDI data block.
4, the manufacture method that is used for the Karaoke of wireless network and radio hand-held equipment according to claim 3 is characterized in that, the image file among the described step b is BMP, JPG or PNG image file format.
5, the manufacture method that is used for the Karaoke of wireless network and radio hand-held equipment according to claim 3 is characterized in that, among the described step e image is adopted the zlib compression.
6, the manufacture method that is used for the Karaoke of wireless network and radio hand-held equipment according to claim 3 is characterized in that, the empirical value of described step a is 0.3～0.6 second.
7, the described player method that is used for the Karaoke of wireless network and radio hand-held equipment of claim 1 is characterized in that, may further comprise the steps:
A. open a described file that is used for the Karaoke of wireless network and radio hand-held equipment by the file operation function;
B. the view data of " video data block " in the extraction document, and to this " view data " decompress(ion);
C. extract MIDI data field in " MIDI data block " as the MIDI file, and play this MIDI file;
D. read the remaining file data blocks after step b and step c processing successively, and data block is judged:, then show this image if this data block is the image displaying block; Otherwise, show captions by the data field requirement of captions displaying block, wait for the fixed time, and begin to play next word, finish up to these lyrics.
E. repeating step d up to each data block of handling successively in the file, plays and finishes.
8, the player method that is used for the Karaoke of wireless network and radio hand-held equipment according to claim 7 is characterized in that, among the described step b view data is adopted the zlib decompress(ion).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03140121XA CN100446531C (en) | 2003-08-11 | 2003-08-11 | Karaoke making method and playing method for wireless network and wireless hand-held device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03140121XA CN100446531C (en) | 2003-08-11 | 2003-08-11 | Karaoke making method and playing method for wireless network and wireless hand-held device |
Publications (2)
| Publication Number | Publication Date |
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| CN1489369A true CN1489369A (en) | 2004-04-14 |
| CN100446531C CN100446531C (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB03140121XA Expired - Lifetime CN100446531C (en) | 2003-08-11 | 2003-08-11 | Karaoke making method and playing method for wireless network and wireless hand-held device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006114021A1 (en) * | 2005-04-27 | 2006-11-02 | Beijing Digital Chaotex Information Technology Ltd. | Synchronous caption generating method and device that can be used in portable device |
| CN101042863B (en) * | 2006-03-24 | 2011-09-28 | 华硕电脑股份有限公司 | Karaoke system |
| CN102231272A (en) * | 2011-01-21 | 2011-11-02 | 辜进荣 | Method and device for synthesizing network videos and audios |
| CN103137167A (en) * | 2013-01-21 | 2013-06-05 | 青岛海信宽带多媒体技术有限公司 | Method for playing music and music player |
| CN103986947A (en) * | 2014-05-04 | 2014-08-13 | 苏州乐聚一堂电子科技有限公司 | Karaoke mobile phone song query system with image special effect |
| CN111859014A (en) * | 2020-06-29 | 2020-10-30 | 维沃移动通信有限公司 | Data labeling method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353353C (en) * | 2000-09-27 | 2007-12-05 | 邹迅 | Internet karaoke real-time playing system |
-
2003
- 2003-08-11 CN CNB03140121XA patent/CN100446531C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006114021A1 (en) * | 2005-04-27 | 2006-11-02 | Beijing Digital Chaotex Information Technology Ltd. | Synchronous caption generating method and device that can be used in portable device |
| CN101042863B (en) * | 2006-03-24 | 2011-09-28 | 华硕电脑股份有限公司 | Karaoke system |
| CN102231272A (en) * | 2011-01-21 | 2011-11-02 | 辜进荣 | Method and device for synthesizing network videos and audios |
| CN103137167A (en) * | 2013-01-21 | 2013-06-05 | 青岛海信宽带多媒体技术有限公司 | Method for playing music and music player |
| CN103986947A (en) * | 2014-05-04 | 2014-08-13 | 苏州乐聚一堂电子科技有限公司 | Karaoke mobile phone song query system with image special effect |
| CN111859014A (en) * | 2020-06-29 | 2020-10-30 | 维沃移动通信有限公司 | Data labeling method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100446531C (en) | 2008-12-24 |
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