CN1896987B - Listing play generator and generation - Google Patents

Abstract

A method for generating play-listing includes generating control signal for forming play-listing by utilizing audio play unit to respond user input, initializing multiple weighted value setting table, and sequencing various audio files according to sizes of weighted value to obtain weighted value and multiple field content of audio file in scope of preset number for calculating out weighted value of each sub item in said table then storing them separately in relevant weighted value setting table, carrying out ergodicity on said setting tables and calculating integration weighted value of each audio file for generating a play-listing according to weighted value of each audio file.

Description

Device and method for generating a playlist

【Technical field】

The invention relates to a device and method for generating a media list.

【Background technique】

With the development of digital technology, digital media such as digital audio, digital video, e-books, and electronic pictures are widely used. Digital media can be stored on hard disks, CDs, and network servers, etc. Digital media can also be used in portable devices, such as personal digital assistants (PDA, Personal Digital Assistant), portable audio players, and portable e-book readers (e-Book Reader). At present, a compact disk (CD, Compact Disk) can store 140 MP3 (MPEP layer three) audio files, and a hard disk audio player with 10G storage space can store 2000 MP3 audio files. The capacity of storage devices continues to increase. For example, a personal computer with 80G storage space will be able to store 16,000 audio files. Therefore, it will be difficult for users to organize, classify and maintain such a large amount of digital media. Furthermore, it is more important to be able to quickly and conveniently identify and select media that users like.

Usually, the media player classifies according to the field content in the digital media tag, and builds a list. For example, the classification standard for audio files usually includes audio file name, artist name, album name and genre, and the genre can be pop, classical, rock, jazz and so on. According to the audio file management program, the personal computer enables the user to create and edit playlists, which can be downloaded to the audio player. The audio player can also browse and select audio files according to the above categories. However, when the user needs to play an audio file, he still needs to remember the category and path of the audio file. And when there are many categories of audio files and subcategories, it is still relatively complicated to choose an audio file that wants to play. When playing according to the category, more manual skipping operations will be required when encountering an audio file that you don't like.

The user can also select the audio files of the current preference and merge them into the mobile playlist, but when the playlist needs to be modified or updated, the user still needs to manually carry out. For example, the patent application document US2003/0221541 published by the United States Patent and Trademark Office on December 4, 2003 discloses a method for automatically generating a playlist. The method enables the user to first select a plurality of seed audio files, the audio files include the user's desired audio files and non-desired audio files, and the user can also set weighted values for the audio files to determine the relative importance of each audio file. Each audio file is then compared with the plurality of seed audio files, and audio files that are similar to desired audio files and dissimilar to non-desired audio files are analyzed and identified, thereby determining audio files desired by the user and creating a playlist.

The method disclosed in the above application documents is to manually select a plurality of seed audio files, and according to the plurality of seed audio files as a reference audio file, select an audio file similar to the desired audio file and not similar to the non-desired audio file, thereby generating a playlist. There are following deficiencies in this method: at first the seed audio file needs to be manually selected, and as the pace of life accelerates, people often require that the use of some electronic devices is simple and quick; The path is complex and changeable, which not only takes a long time to select the seed audio file; in addition, this method fails to automatically obtain the audio file preferred by the user based on the historical playback records, so that the selected audio file does not fully reflect the user's preference .

【Content of invention】

In view of the deficiencies in the above-mentioned application documents, an audio playback device in the present invention automatically generates the weighted values of each audio file according to the user's operation in the audio file playback process, and obtains the weighted values of the preset number of audio files and multiple audio files in their labels. Field content, and thereby generate the weighted value of each sub-item in multiple weighted value setting tables; traverse the multiple weighted value setting tables to generate the comprehensive weighted value of each audio file; automatically according to the comprehensive weighted value of each audio file Select multiple audio files to generate a playlist. This makes the audio files in the playlist more in line with the user's actual preference.

The invention provides a method for generating a playlist, which generates a control signal for generating a playlist in response to user input. In response to the control signal, multiple weight value setting tables are initialized, and the multiple weight value setting tables respectively record the corresponding relationship between the field content of the audio file and the weight value. Sort each audio file according to the size of the weighted value. The weighted values and the contents of a plurality of fields of a preset number of audio files are sequentially obtained. In this way, the weighted values of each sub-item in the multiple weighted value setting tables are calculated and stored in corresponding weighted value setting tables. The multiple weighted value setting tables are traversed to calculate the comprehensive weighted value of each audio file. A playlist is generated according to the weighted value of each audio file.

The present invention also provides a play list generating device, which includes a memory, an input unit, a control unit and an audio file management unit. The memory stores a plurality of audio files and a plurality of weight value setting tables, and the plurality of weight value setting tables respectively record the corresponding relationship between the field content of each audio file and the weight value. The input unit generates and sends a control signal for generating a play list in response to user input. The audio file management unit receives the control signal under the control of the control unit, initializes the plurality of weighted value setting tables; sorts each audio file according to the size of the weighted value; obtains the weighted value of a preset number of audio files in sequence and a plurality of field contents; thereby calculating the weighted value of each sub-item in the plurality of weighted value setting tables; traversing the multiple weighted value setting tables to calculate the comprehensive weighted value of each audio file; according to the weighted value of each audio file The value generates a playlist.

The invention automatically generates the weighted value of each audio file according to the user's preference, and then generates a playlist according to the weighted values of multiple audio files, so that the audio files in the playlist are more in line with the user's preference. Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

【Description of drawings】

FIG. 1 is a block diagram of an audio playback device of the present invention.

Fig. 2 is a block diagram of the audio file management unit of the audio playback device of the present invention.

Fig. 3 is the main flow chart of generating a playlist in the present invention.

Fig. 4 is a flow chart of generating the weighted value of each sub-item of the weighted value setting table according to the present invention.

Fig. 5 is a flow chart of adjusting the weighting value of each audio file in the present invention.

Fig. 6 is a flowchart of generating weighted values of each audio file in the present invention.

FIG. 7 is a table of correspondence between volume adjustment ranges and weighted values in the present invention.

8 to 10 are schematic diagrams of a plurality of weighted value setting tables of the present invention.

【Detailed ways】

As shown in FIG. 1 is a block diagram of an audio playback device 10 of the present invention. The audio playback device 10 includes a memory 11 , an input unit 12 , a control unit 13 , an audio file management unit 14 , a decoder 15 , a D/A converter 16 and an audio output unit 17 . This memory 11 stores a plurality of audio files and a plurality of weighted value setting tables; a weighted value field is set in the label of each audio file, and records the comprehensive weighted value of the audio file; the multiple weighted value setting tables record audio frequency respectively The corresponding relationship between the content of a field of the file and the weighted value, the content of this field includes singer, genre and rhythm, etc. The input unit 12 generates and sends corresponding control signals in response to user input. The control unit 13 recognizes the control signal sent by the input unit 12 , and controls the memory 11 and the audio file management unit 14 in response to the control signal. The audio file management unit 14, under the control of the control unit 13, obtains the weighted value and a plurality of field contents of a preset number of audio files; thereby calculates the weighted value of each sub-item in the plurality of weighted value setting tables; Traverse the multiple weighted value setting tables, calculate the comprehensive weighted value of each audio file; generate a play list according to the comprehensive weighted value of each audio file. The decoder 15 is used to decode an audio file. The D/A converter 16 is used to convert the digital signal of the audio file into an analog signal. The audio output unit 17 enables the user to connect the audio playing device 10 to a sound system or earphones, amplify the analog signal and provide it to the sound system or earphones for playback.

FIG. 2 is a block diagram of the audio file management unit of the audio playback device 10 of the present invention. The audio file management unit 14 includes a weight generating module 140 , a sorting module 141 , a weight setting table updating module 142 , a weight adjusting module 143 and a playlist generating module 144 . The weighted value generation module 140 automatically generates the weighted value of the audio file according to the user's operation on the audio file; , to generate weighted values for the audio file. The sorting module 141 sorts the audio files according to the weighted value. The weighted value setting table update module 142 sequentially obtains the weighted values and multiple field contents of a preset number of audio files, for example, can be obtained in order of the weighted values of the audio files; and thereby calculates the multiple weighted value settings The weighted value of each subitem in the table. The weight adjustment module 143 traverses the plurality of weight setting tables to calculate the comprehensive weight of each audio file in the audio playback device 10 . The playlist generation module 144 generates a playlist according to the comprehensive weighted value of each audio file.

As shown in FIG. 3 is the main flow chart of the present invention for generating a playlist. The input unit 12 generates and sends a control signal for generating a playlist in response to the user's input (step S20). Please refer to FIG. 8 to FIG. 10 together. In response to the control signal, initialize the multiple weight value setting tables, and initialize the weight values corresponding to each sub-item in the multiple weight value setting tables to zero (step S21 ). Then sort the audio files according to the size of the weighted value (step S22). The weighted values and the contents of a plurality of fields of the preset number P of audio files are sequentially acquired (step S23). Calculate the weighted value of each sub-item in the multiple weighted value setting table according to the weighted value of the obtained audio file and a plurality of field contents, the field contents include singer, genre and rhythm, etc. (step S24). Store the weighted value of each sub-item in the corresponding weighted value setting table (step S25). The multiple weighted value setting tables are traversed to calculate the comprehensive weighted value of each audio file (step S26). Select audio files according to the comprehensive weighted value of each audio file to generate a playlist; the method for generating a playlist can be: select a specific number of audio files with a larger weighted value to generate a playlist; or call a random function to select audio A playlist is generated from the file, and the weighted value of the audio file will be used as a parameter in the random function (step S27). The playlist allows manual editing by the user.

FIG. 4 is a flow chart of the present invention for generating the weighted values of each sub-item of the multiple weighted value setting tables. First, the audio file management unit 14 obtains the weighted value of an audio file (step S30). It is judged whether the weighting value of the audio file is greater than a default value K (step S31). If the weighted value of the audio file is not greater than a default value K, the process ends, and now the weighted value of each sub-item in the multiple weighted value setting tables is the final value; if the weighted value of the audio file is greater than a default value K , then add up the number N of audio files acquired once (step S32). Then obtain a field content of the audio file (step S33). Find the weighted value setting table corresponding to the content of the field (step S34). The weighted value of the audio file is added to the weighted value of the sub-item with the same content as the field (step S35). Judging whether the audio file still has unacquired field content (step S36). If this audio file also has the field content that is not obtained, flow process returns to step S33; If the field content of this audio file is all obtained, then judge whether the number N of the audio file that obtains is less than a preset number P (step S37) . If the number N of the acquired audio files is less than a preset number P, the process returns to step S30; if the number N of the acquired audio files is not less than a preset number P, the process ends. After the process ends, the weighted value corresponding to each sub-item in each weighted value setting table is the final value. Certainly, when obtaining the weighted value of the audio file and the contents of multiple fields, it is not necessary to judge whether the weighted value is greater than a default value K, that is, it is only necessary to obtain the weighted value and the multiple fields of the audio files of the preset number P in sequence. Can.

As shown in FIG. 5 , it is a flow chart of adjusting the weighted value of each audio file in the present invention. First read an audio file in the audio playback device 10 (step S40). A plurality of field contents of the audio file are obtained, and the field contents include singer, genre, rhythm, etc. (step S41). Please refer to FIG. 8 to FIG. 10 together, traverse the multiple weight value setting tables, and obtain the weight value of the sub-item corresponding to each field content of the audio file (step S42). According to the weighted value of the sub-item corresponding to each field content of the audio file, an algorithm is used to calculate the comprehensive weighted value of the audio file; for example, the weighted value corresponding to each field content can be summed to calculate the audio file The comprehensive weighted value of the audio file; the weighted value corresponding to each field content can also be multiplied by a weight percentage first and then summed up to calculate the comprehensive weighted value of the audio file, where the weight percentage represents the importance of each field content , the sum of each weight percentage is 1 (step S43). It is judged whether the comprehensive weighted values of all audio files have been calculated (step S44). If the comprehensive weighted values of audio files have not been calculated, the process returns to step S40; if the comprehensive weighted values of all audio files have been calculated, the process ends.

FIG. 6 is a flow chart of the present invention for generating weighted values of each audio file in the audio playback device 10 . For example, in this embodiment, the audio playback device 10 generates the weighted value of an audio file according to the user's adjustment of the volume during playback of the audio file. The input unit 12 generates and sends a control signal for playing an audio file in response to the user's input (step S50). In response to the control signal, an audio file is played (step S51). Acquire the volume when the audio file is finished playing, and use the volume as a standard volume, which is the most comfortable volume for the user to listen to music under normal circumstances (step S52). Read and decode the next audio file (step S53). The audio file is output (step S54). The control unit 13 detects a control signal for adjusting volume in real time (step S55). If the control unit 13 does not detect a control signal for adjusting the volume, the flow returns to step S54; if the control unit 13 detects a control signal for adjusting the audio file, the audio file management unit 14 obtains the adjusted volume (step S56). The adjusted volume is subtracted from the standard volume to calculate the volume adjustment range (step S57). Please also refer to FIG. 7 , read the corresponding relationship table between the volume adjustment range and the weighted value, and obtain the weighted value corresponding to the volume adjustment range (step S58 ). The audio file management unit 14 judges whether the weighted value is equal to the original weighted value of the audio file (step S59). If the weighted value is equal to the original weighted value of the audio file, the process jumps to step S61; if the weighted value is not equal to the original weighted value of the audio file, update the weighted value of the audio file (step S60). The audio file management unit 14 judges whether the audio file has been played (step S61). If the audio file is played completely, the flow returns to step S53; if the audio file has not been played completely, the flow returns to step S54. During playing, if the audio playing device 10 receives a pause or stop signal sent by the input unit 12, it will pause or stop playing the audio file.

As shown in FIG. 7 is a table of the correspondence relationship between the volume adjustment range and the weighted value in the present invention. The relationship diagram records the corresponding relationship between the volume adjustment range and the weighted value, for example, when the volume adjustment range is between 7 and 9, the corresponding weighted value is 3. The size of the weighted value represents the user's preference for the audio file. Under normal circumstances, the user will turn up the volume when listening to a favorite audio file; while the user will keep the original volume or turn down the volume when listening to a common audio file.

FIG. 8 to FIG. 10 are schematic diagrams of a plurality of weighted value setting tables of the present invention. The plurality of weighted value setting tables respectively record the corresponding relationship between the subitems of the singer, genre and rhythm of the audio file and the weighted values. The singer's sub-item includes multiple singer's names; the singer's sub-item may also include multiple singer's index numbers, and each index number corresponds to a singer's name. Subitems for genre include rock, pop, jazz, and so on. The sub-items of rhythm include rapid, moderate, soothing and so on.

Claims (15)

1. A method for generating a playlist, characterized in that, comprising steps: Responding to user input, generating a control signal for generating a playlist; In response to the control signal, multiple weighted value setting tables are initialized, and the multiple weighted value setting tables respectively record the corresponding relationship between the field content of the audio file and the weighted value; Obtain weighted values and multiple field contents of multiple audio files; Thereby calculating the weighted value of each sub-item corresponding to each field content in the plurality of weighted value setting tables, and storing them in the corresponding weighted value setting table; Traverse the plurality of weighted value setting tables, and calculate the comprehensive weighted value of each audio file according to the weighted value of the sub-item corresponding to each field content of each audio file; and A play list is generated according to the comprehensive weighted value of each audio file. 2. A kind of playlist generation method as claimed in claim 1, is characterized in that, the weighted value of each audio file is to generate automatically according to the operation of user to each audio file. 3. a kind of playlist generating method as claimed in claim 1, is characterized in that, the method for obtaining the weighted value of these multiple audio files and a plurality of field contents is a kind of in following method: Sorting each audio file according to the size of the weighted value, and sequentially obtaining the weighted value and a plurality of field contents of a preset number of audio files with larger weighted values; and Obtain the weighted values and the contents of multiple fields of multiple audio files whose weighted values are greater than a default value. 4. A kind of play list generating method as claimed in claim 1, it is characterized in that, in this step " thereby calculate the weighted value of each sub-item corresponding to each field content in this multiple weighted value setting table ", calculate A method for setting the weighted value of a sub-item in the weighted value table is as follows: adding up the weighted values of the audio files containing the sub-item among the plurality of audio files to calculate the weighted value of the sub-item. 5. a kind of play list generating method as claimed in claim 1, is characterized in that, this step " calculates the weighted value of each sub-item corresponding to each field content in this multiple weighted value setting table " comprises: Obtain the weighted value and multiple field contents of an audio file; Find a weighted value setting table corresponding to the content of each field; and The weighted value of the audio file is respectively added to the weighted value of the sub-item with the same content as each field. 6. A kind of play list generating method as claimed in claim 1, is characterized in that, this step " traverses this multiple weighted value setting tables, calculates according to the weighted value of the sub-item corresponding to each field content of each audio file Obtain the comprehensive weighted value of each audio file", the method for calculating the comprehensive weighted value of an audio file is specifically: read an audio file; Obtain the contents of multiple fields of the audio file; traverse the plurality of weighted value setting tables, and obtain the weighted value of the sub-item corresponding to each field content of the audio file; and An algorithm is used to calculate the comprehensive weighted value of the audio file. 7. a kind of playlist generation method as claimed in claim 6 is characterized in that, this algorithm is one of following two kinds of algorithm: summing up the weighted values of the subitems corresponding to each field content of the audio file; and The weighted value of the subitem corresponding to each field content of the audio file is first multiplied by a weight percentage and then summed up, wherein the size of the weight percentage represents the importance of each field content, and the sum of each weight percentage is 1. 8. A playlist generating device, characterized in that the device comprises: A component for generating and sending a control signal generating a playlist in response to user input; A component for initializing multiple weighted value setting tables in response to the control signal, and the multiple weighted value setting tables respectively record the corresponding relationship between the field content of the audio file and the weighted value; A component for obtaining weighted values of multiple audio files and multiple field contents; A component for calculating the weighted value of each sub-item corresponding to each field content in the plurality of weighted value setting tables, and storing them in the corresponding weighted value setting table; A component for traversing the plurality of weighted value setting tables and calculating the comprehensive weighted value of each audio file according to the weighted value of the sub-item corresponding to each field content of each audio file; and A component for generating a playlist according to the comprehensive weighted value of each audio file. 9. The device for generating a playlist according to claim 8, further comprising a component for automatically generating a weighted value of an audio file according to a user's operation on the audio file. 10. A kind of play list generation device as claimed in claim 8, is characterized in that, this is used to obtain the weighted value of a plurality of audio files and the component of a plurality of field contents obtains the weighted value of this a plurality of audio files and a plurality of The method of field content is one of the following methods: Sorting each audio file according to the size of the weighted value, and sequentially obtaining the weighted value and a plurality of field contents of a preset number of audio files with larger weighted values; and Obtain the weighted values and the contents of multiple fields of multiple audio files whose weighted values are greater than a default value. 11. A kind of play list generating device as claimed in claim 8, is characterized in that, device also comprises: A component for sorting the plurality of audio files according to the size of the weighted value; A component for obtaining weighted values and multiple field contents of a preset number of audio files in sequence from the audio playback device, thereby calculating the weighted value of each sub-item in the multiple weighted value setting table; and A component for traversing the plurality of weighting value setting tables to calculate the comprehensive weighting value of each audio file. 12. A kind of play list generation device as claimed in claim 8, it is characterized in that, this is used to thereby calculate the weighted value of each sub-item corresponding to each field content in this multiple weighted value setting table, and store respectively For the components in the corresponding weighted value setting table, calculate the weighted value of a sub-item in the weighted value setting table: The weighted values of the audio files containing the sub-item among the plurality of audio files are summed up to calculate the weighted value of the sub-item. 13. A kind of play list generating device as claimed in claim 8, it is characterized in that, the component for calculating the weighted value of each sub-item corresponding to each field content in the multiple weighted value setting table calculates the multiple The weighted value of each sub-item corresponding to each field content in the weighted value setting table is specifically: Obtain the weighted value and multiple field contents of an audio file; Find a weighted value setting table corresponding to the content of each field; and The weighted value of the audio file is respectively added to the weighted value of the sub-item with the same content as each field. 14. A kind of play list generation device as claimed in claim 8, is characterized in that, this is used for traversing the multiple weighted value setting tables, according to the weighted value calculation of the sub-item corresponding to each field content of each audio file Obtain the component of the integrated weight value of each audio file, calculate the integrated weight value of an audio file: read an audio file; Obtain the contents of multiple fields of the audio file; traverse the plurality of weighted value setting tables, and obtain the weighted value of the sub-item corresponding to each field content of the audio file; and An algorithm is used to calculate the comprehensive weighted value of the audio file. 15. A kind of play list generation device as claimed in claim 14, is characterized in that, this algorithm can be a kind of of following two kinds of algorithm: summing up the weighted values of the subitems corresponding to each field content of the audio file; and The weighted value of the subitem corresponding to each field content of the audio file is first multiplied by a weight percentage and then summed up, wherein the size of the weight percentage represents the importance of each field content, and the sum of each weight percentage is 1.

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