KR100454445B1 - Method for providing Music-On-Demand Service and system for the same - Google Patents

Abstract

The present invention relates to an on-demand music service over a wireless network.

An on-demand music service system according to the present invention comprises: a sound source server for processing music orders from a plurality of wireless terminals accessible through a wireless network, and storing and managing a plurality of sound source data; A purchase list database for storing previously purchased song data for each customer; A wireless communication server supporting interconnection with a wireless data communication system; Receives the music selection command from the customer's wireless terminal, charges the selected song, sends it to the customer's terminal, adds it to the customer's purchase list database, and requests that the customer's terminal retransmit the purchased song without additional charge processing. And a service management server which extracts sound source data from the sound source server and transmits the sound source data to the requested mobile communication terminal.

Description

Method for providing music-on-demand service and system for the same

The present invention relates to a communication service system via a network, and more particularly to an on-demand music service system and a service method thereof through a wireless network.

There is a music present service in the music service through the wireless network. This is a service that calls the mobile phone of the person of his choice and demodulates the music of his choice by voice based on a database server that stores a lot of sound data.

There is also an on-demand music service that lets you listen to music on your phone. This service also demodulates and transmits music selected by customers based on a sound source database.

However, the on-demand music service according to the prior art is a one-time service because the individual database management for the ordered music is not made, and the selection process is complicated, resulting in a lot of inconvenience in the selection.

Another prior art is a patent application 1998-012499 filed by April 9, 1998, Park Yong Bae. This technology receives music from customers through a website on the Internet based on sound recording data storing music lists of each genre, and makes selected songs into CDs and sends them to customers by mail. However, such a service is expensive and very inconvenient in that it requires a separate player and manages its music with many CDs.

The present invention is to solve such a problem, to provide a custom music service system and a service method that can be listened to a large amount of music purchased at a convenient and low cost anywhere anytime, even through a wireless terminal of limited memory capacity The purpose.

Furthermore, an object of the present invention is to provide an on-demand music service system and a service method thereof.

In addition, an object of the present invention is to provide an on-demand music service system and a service method thereof, which can be serviced at low cost by using a time zone having good network bandwidth.

1 is a view schematically showing the overall configuration of a wireless mobile communication service system to which the music service system on demand is applied according to the present invention.

2 is a flowchart illustrating a method of on-demand music service according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a flow of a reservation transmission service and a music gift service according to an embodiment of the present invention.

4 is a flowchart illustrating a processing flow of a sound source retransmission service according to an embodiment of the present invention.

5 is a flowchart illustrating an embodiment of a music selection method according to another aspect of the present invention.

<Description of the symbols for the main parts of the drawings>

100, 101, 102: wireless data communication terminal

110: base station 120: mobile communication switching center

130: service management server 140: sound source server

150: internet 160: swap gateway

170: system management server 180: swap server

190: sound source encoding server

On demand music service method according to an aspect of the present invention for achieving the above object is executable by a service server accessible by a plurality of mobile communication terminal over a wireless network,

Transmitting a music list to a mobile communication terminal; A selection step of receiving a selection input from the mobile communication terminal; Billing the selected song and adding it to a customer-specific purchase list; Extracting the sound source data from the sound source server and transmitting the sound data to the requested mobile communication terminal without additional purchase charge processing upon request for retransmission of the purchased song; Characterized in that it comprises a.

According to the on-demand music service method according to the present invention according to the advantageous aspect of the present invention it is possible to manage a large amount of music cheaply and easily for each individual even through a wireless terminal with limited memory capacity by managing previously purchased songs for each individual Do.

Furthermore, the on-demand music service method according to another aspect of the present invention comprises the steps of: the step of transmitting the announcement for the selection by voice recognition; Receiving voice data corresponding to a selection command; Speech recognition of the received voice data; Searching sound source data with at least one keyword included in the recognized data; And adopting a song found as a result of the search as the song selected by the user's confirmation.

According to this advantageous aspect of the present invention, according to the music service method according to the present invention, it is possible to conveniently and quickly search a large amount of sound sources by voice recognition without adding additional functions to the terminal.

An on-demand music service method according to an additional aspect of the present invention comprises the steps of: sending a question asking a transmission method to a customer terminal; If the customer selects a reservation transmission, receiving a reservation time to transmit therefrom; And checking music time and transmitting music data in case of a reservation time for the customer.

According to this advantageous aspect of the present invention, the music service method according to the present invention can service the ordered music while requiring only a low cost by utilizing a good time zone of the network band.

On the other hand, the on-demand music service method according to another aspect of the present invention is executable by a service server accessible by a plurality of mobile communication terminals over a wireless network,

Receiving receiving terminal information including a receiver's telephone number from a mobile communication terminal; Transmitting a music list to a mobile communication terminal; A selection step of receiving a selection command from the mobile communication terminal; Adding the selected song to the recipient's purchase list; A retransmission step in which the receiver extracts sound source data from a sound source server and transmits it to the requested mobile communication terminal without additional purchase charge processing when a request for retransmission of the previously purchased music is performed; Characterized in that it comprises a.

According to this aspect of the present invention, the on-demand music service method according to the present invention can transmit the music selected by the third party as a gift, and additionally charge anytime and anywhere by adding this song to the purchase list of the receiver. It is possible to download and enjoy to your terminal without processing.

According to an advantageous aspect of the present invention, the above-described aspect of music selection or reservation transmission using voice recognition may also be applied to the music gift service method.

In addition, the music service method implemented on the wireless terminal according to the present invention is:

Receiving a list of music from a service server; A selection step of transmitting a selection input from the user to the mobile communication terminal; Receiving sound source data for the selected song from the service server, decoding the same, and outputting the music; Receiving a request for retransmission of pre-purchased songs from a user and transmitting the retransmission request to the service server and retransmitting the re-transmission after checking the list of pre-purchased songs from the service server; Characterized in that it comprises a.

In addition, according to an additional aspect of the present invention implemented on the terminal side, the selection step comprises the steps of: outputting a guide message for selection by voice recognition; Receiving a voice command corresponding to a music selection command and performing voice recognition processing to transmit the voice command to a service server; Receiving and outputting a corresponding song list message from a service server, receiving a final selection command from the service server, and transmitting the received song selection message to the service server; It may be characterized in that it comprises a.

On the other hand, the on-demand music service system according to an aspect of the present invention for achieving the above object processes music orders from a plurality of wireless terminals through a wireless network,

A sound source server for storing and managing a plurality of sound source data; A purchase list database for storing previously purchased song data for each customer; A wireless communication server supporting interconnection with a wireless data communication system; Receives the music selection command from the customer's wireless terminal, charges the selected song, sends it to the customer's terminal, adds it to the customer's purchase list database, and requests that the customer's terminal retransmit the purchased song without additional charge processing. And a service management server which extracts sound source data from the sound source server and transmits the sound source data to the requested mobile communication terminal.

On-demand music service system according to an additional aspect of the present invention further comprises a digital encoding server for compressing the original sound source to a digital sound source suitable for wireless communication to store in the sound source server.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

1 is a diagram schematically showing an example of the overall configuration of a wireless mobile communication service system to which an on-demand music service system according to the present invention is applied.

As shown, the on-demand music service system according to the present invention includes a swap server 180, a sound source server 140 and a service management server 130, and may further include a sound source encoding server 190.

Wireless data communication terminals (100, 101, 102) used by users using the on-demand music service system according to the present invention may include a mobile phone, a personal digital assistant, etc. Further, it is possible to receive data services through a mobile communication network It encompasses any portable wireless data communication terminal with computer computing capability.

These terminals download files according to one or more of known music compression algorithms such as MP3, WMA, AAC, etc. through a wireless network and store them in an internal memory. In addition, the terminal includes a decoder and a voice output circuit for decoding them to reproduce them as music and output them through a music output device such as a speaker.

According to an advantageous aspect of the present invention, these terminals are capable of reproducing in real time the sound source data streamed through the wireless network. Under the IMT-2000 environment, the extended bandwidth enables streaming transmission and real-time playback of digital sound sources. In addition, these terminals are designed to store these transmission state information when transmission is interrupted due to an error during transmission, so that they can be inherited using this connection state information when the network is restored later or when reconnecting.

A keyboard for inputting music selection data and operation commands; And a display device for displaying an operation state or selected data, for example, an organic EL or LCD display device. On the other hand, it includes a microphone related circuit for voice input according to an advantageous aspect of the invention.

A mobile communication terminal having a microphone, a speaker and a display device, and a decoder and a memory for storing and playing music are known before the filing date, and the technology for downloading data from a server through the mobile communication terminal is also before the filing date. Known in

In addition, since various functions according to the present invention are based on a message transmitted to a terminal by a server, no special hardware or software on the terminal side is required. Therefore, those skilled in the art will be able to easily manufacture a wireless mobile communication terminal and software therefor that can be serviced by the present invention, and thus detailed description thereof will be omitted.

Mobile communication equipment such as base station 110 and mobile communication switching center 120; Wireless communication servers supporting the interconnection of the wireless data communication system and the computer system, for example, in the present embodiment, the swap gateway 160 and the swap server 180 are conventional, and thus detailed description thereof will be omitted.

The sound source server 140 stores and manages a plurality of sound source data. In a preferred embodiment of the present invention, the sound source server 140 includes a sound source management server managing a sound source to be serviced; It consists of a digital sound source storage server that stores sound sources to be serviced.

The sound source management server manages an index for searching for a sound source. The sound source may be managed by fields such as song name, singer, genre, preferred age group, and lyrics text.

The digital sound source storage server is a server that stores a large amount of digital sound sources compressed with digital compression algorithms such as MP3, WMA, AAC, and the like. The memory hierarchy of the digital sound storage server can be appropriately designed in consideration of the number of times of access to a specific song for a certain period of time.

When the service management server 130 transmits a search command including a keyword and field name for sound source search to the sound source server 140, the sound source management server of the sound source server 140 searches for the corresponding field with a given keyword and extracts a sound source index. do. Thereafter, the digital sound source storage server extracts the sound source corresponding to the sound source index and transmits the digital sound source data via the service management server 130 or directly to the terminal. In this case, the transmission may be a stream method based on real time transmission or a general data download method.

The service management server 130 receives a selection command from the wireless terminal (100, 101, 102) of the customer, charges the selected song, transmits it to the customer terminal (100, 101, 102), and sends it to the purchase list database of the customer. In addition, when the customer terminal requests to retransmit the previously purchased music, the sound source data is extracted from the sound source server and transmitted to the requested mobile communication terminal without additional purchase charge processing.

In this embodiment, the service management server 130 includes a user management server that manages a purchase list database for each user and processes and manages the progress of customer service; It consists of a billing server that handles billing according to service usage. The user management server has a user database and a purchase list database. The user database manages usage information such as personal information of customers and usage history by period. The purchase list database maintains a list of songs purchased by each customer.

The user management server sends various guide messages as voice or data through the mobile communication terminal, and processes various commands or input data of the user from the terminal. The details of the processing of the user management server will be described in detail in the following description of the music service method on demand according to the present invention.

The billing server may calculate monthly charges by accumulating monthly usage history for each user. In this case, the mobile carrier can process the billing in a batch. However, such charging is not essential, and charging may be made on a case-by-case basis through a separate wireless payment gateway. In this case, the mobile communication terminal may include a module such as an electronic wallet for user authentication or authentication for payment, for example, fingerprint recognition and password authentication. In this case, the billing server may request approval for payment to a separate wireless billing gateway, and determine the continuation / stop of the service according to the result and notify the user management server.

The system management server 170 manages various systems such as the service management server 130, the sound source server 140, and the swap gateway 160 installed on the mobile carrier, and controls the operation environment of the server according to the network load and the processing load. Perform surveillance and so on. Furthermore, according to an advantageous aspect of the present invention, the number of downloads or streaming counts are statistically processed for each sound source so that the data can be used for reconfiguring the system environment.

The swap server 180 and the sound source encoding server 190 are illustrated as being installed remotely via the Internet 150. This is illustrated, but not necessarily, as these devices are preferably installed on the content provider's side providing the content rather than being connected to the carrier's internal LAN. For example, these devices may be directly installed in the internal LAN of the mobile carrier side together with the swap gateway 160, the service management server 130, and the sound source server 140.

The sound source encoding server 190 converts a new song or a song to be added into the digital sound source to add to the sound source server 140, and may go through a process of compressing the above-described compression algorithm through a digital sampling from an analog sound source, The compression format may be converted from the sound source to an intermediate format by the aforementioned compression algorithm, or may be configured to support both of them. Meanwhile, the sound source encoding server 190 may access the sound source management server and the digital sound source storage server of the sound source server 140 through the Internet 150. The communication between them may be based on the TCP / IP protocol or may utilize other file transfer protocols such as FTP.

In addition, a web page development tool may be added to facilitate adding new content or changing existing content. This tool automatically updates the developed swap page to the service management server (130).

In the above embodiment, the music service system according to the present invention has been described as being implemented in a plurality of servers, but as will be apparent to those skilled in the art, this is not necessarily necessary. For example, the service management server 130 and the sound source server 140 may be two processes or threads implemented on the same server, and the system management server 170 may also be implemented on the same server. Furthermore, the swap server 180 and the sound source encoding server 190 may also be implemented on the same physical server. The question of whether to implement it on one server or to distribute it to several servers can be appropriately selected in consideration of load, security, and processing convenience.

Hereinafter, the on-demand music service method according to the present invention will be described in detail through a preferred embodiment described with reference to the accompanying flowchart.

2 is a flowchart illustrating a method of on-demand music service according to an exemplary embodiment of the present invention. The service may be in various forms according to the type of music provided. For example, the service shown in FIG. 2 is a popular song service that provides 10 songs of the week's most popular songs and 10 songs of high popularity for a certain period for each genre. The guide screen for the menu is displayed on the LCD of the terminal (step 201). A guide message for the submenu is output to the screen and a selection command is received therefrom (steps 202 and 203). The selection can be made using the indicating means, for example, by using a cursor key or mouse, or by selecting an appropriate number, for example, '1', to select the "Top 10 of the week" menu.

If you select "Top 10 of the Week", the corresponding song list message is displayed on the screen (step 206). If you select "Top 10 by genre," the list of genres, eg ballads, dance music, pop songs, etc., is displayed. It is presented (step 204), after which the genre selection input is received (step 205), and the song list message corresponding to the genre is output to the screen (step 206). If one piece of music is selected from the list of songs, step 207, a command list for the piece of music is transmitted and displayed on the terminal screen (step 208).

Such a list of commands may include, for example, "singing information," which is to send song lyrics or surrounding stories related to the song as messages. You can also hear parts of a song before downloading through a menu labeled "Taste." The "Real-Time Listening" menu transmits a digital sound source as a stream to be reproduced through a terminal in real time. Since only one viewing is performed, billing will be estimated at a lower cost than downloading. "Music video viewing" transmits a digital sound source as a stream, while synchronizing playback by transmitting a moving video video stream or a sequence of still images frames synchronized thereto.

In step 208, the "download" menu is a menu for selecting a digital sound source to be downloaded to their own terminal to continue listening repeatedly. Since this menu is actually a purchase of the music, a copy protection algorithm should be applied to prevent copying out of the terminal. According to a preferred aspect of the present invention, once purchased music is managed in a purchase list for each customer.

Therefore, when the terminal memory is full and can no longer download a new song, you can delete the existing song and receive a new song, and if you want to hear the deleted song later, you can request it again by requesting the service server. In this case, since the music is already purchased, there is no need to pay for the purchase cost, only the communication fee for downloading and the low amount of retransmission service fee. The billing process at the time of downloading may be processed at every download using a wireless payment gateway, or the billing data including the number of downloads for each terminal may be accumulated in a predetermined period, for example, monthly, and collectively billed.

If a selection command for a "reservation request" menu provided according to an additional aspect of the present invention is received (step 209), a message for inputting a reservation time, i. The data input to the terminal is received and processing for reservation transmission is executed. This process adds a new reservation record to the reservation transmission database including information on the receiving terminal, reservation time information, and an index of the sound source data file to be transmitted. The reservation transfer processing process searches the reservation record every time and executes the reservation transfer service when the reservation is found. The reservation record is preferably sorted and stored based on the reservation time.

3 is a flowchart showing an embodiment of the processing flow of such a reservation transmission service. If the reservation is found, the receiver terminal is called (step 301). Thereafter, when the user answers the call and the call path is established, a guide message for the reservation transmission service is output (step 302).

However, the present invention is not limited to the establishment of a call by such a call. For example, when the reservation time is similar to the existing text message transmission method, the service management server 130 controls the user without any manipulation. The sound source data can be downloaded from the sound source server 140 directly to the user's terminal via the base station equipment 110 and 120. That is, the base station unilaterally calls the terminal and pushes data. At this time, the user confirms this through a special indication on the terminal, for example, an alarm icon indicating that there is newly downloaded data and an arrival alarm sound, and is currently downloaded and stored on a predetermined menu on his terminal, for example, the terminal. You can check this through the menu for checking the music list or the check for new songs. After that, the user can freely listen to the music stored in his terminal.

After the user answers the call and the call path is opened and the guide message is issued, the guide message for the approximate transmission time in the current channel state is outputted along with the guide for the file size (step 304). Then, it transmits a question message asking whether to download now (step 305), and if accepted, transmits the sound source file from the sound source server (step 306). At this time, the downloaded song is added to the purchase list of the receiver so that it can be retransmitted later. If it refuses to download now, it sends a message asking whether to re-enter a new scheduled transmission time (step 307), and if so, modifies the reservation record in the reservation transmission database (step 308). If the reservation is canceled, the reservation transfer is not executed and the service is terminated (step 309).

In Fig. 2, when a selection command for the “Gift to a Friend” menu, which is menu 7, is received (step 209), a message for inputting the recipient's telephone number, reservation time, i.e., date and time of reservation transmission, is sent to the terminal and the user The data input from the terminal to the terminal is received and processing for the music present is executed. This process adds a new reservation record to the reservation transmission database, which includes information about the receiving terminal, reservation time information, an index of the sound source data file to be transmitted, preferably a message to be transmitted along with the sender's nickname or music. The reservation transfer processing process searches the reservation record every time and executes the reservation transfer service when the reservation is found. The reservation record is preferably sorted and stored based on the reservation time.

According to an auxiliary aspect of the present invention, a text message may be transmitted with this music gift. At this time, the step of receiving a text message is optionally added (step 212).

The text message is transmitted along with the sound packet and processed by the terminal. Since a technique of transmitting and receiving such multiple types of data through a wireless network through the same channel is well known in the wireless communication field, a detailed description thereof will be omitted.

Fig. 3 is a flowchart showing an embodiment of the processing flow when the transmission time is reached according to the "gift from a friend" menu. The reservation record is checked and the receiver terminal is called when the reservation transmission time arrives (step 301). Thereafter, when the user answers the call and a call path is opened, a guidance message for a music gift service such as "This is a music gift from Hong Gil Dong" is output (step 302).

However, as in the "reservation request" menu above, the present invention is not limited to the establishment of a call by such a call. For example, similar to the existing text message transmission method, any operation of the user when the reservation time arrives The sound source data may be downloaded directly from the sound source server 140 via the base station equipment 110 and 120 to the user's terminal under the control of the service management server 130 without going through the same. That is, the base station unilaterally calls the terminal and pushes data. At this time, the user confirms this by using a special mark on the terminal, for example, an alarm icon indicating that there is newly downloaded data and an arrival alarm sound, and is currently downloaded and stored on a predetermined menu on his terminal, for example, You can check this through the menu for checking the music list or the check for new songs. After that, the user can freely listen to the music stored in his terminal.

When the channel is opened and the guidance for the music present is completed, a guidance message for the approximate transmission time in the current channel state is output with the guidance for the file size later (step 304). Then, a question message asking whether to download now is transmitted (step 305), and if it is accepted, the sound source file is transmitted from the sound source server (step 306). If it refuses to download now, it sends a message asking whether to re-enter a new scheduled transmission time (step 307), and if so, modifies the reservation record in the reservation transmission database (step 308). If the reservation is canceled, the reservation transfer is not executed and the service is terminated (step 309).

In the case of a music gift, as an example of the billing system, it is possible for the user receiving the gift to charge the user who sent the gift at the moment of completing the download. As another example, when a gift sender sends a gift, he or she can add the song to the gifted user's list of purchases, finish charging the user who sent the gift, and then allow the gift recipient to download it. .

On the other hand, since music is added to the list of purchasers of the gift recipient, the gift sender must purchase once more for himself to freely enjoy the song.

4 is a flowchart illustrating a processing flow of a sound source retransmission service according to an embodiment of the present invention. Once downloaded by yourself or others through menus such as downloads, music gifts, and reservation transfers, the files are maintained in the purchase list for each customer and later resent when requested by the customer. If there is a retransmission request, the service management server 130 checks the purchase list for the purchased song in FIG. 1 (step 401). Step 402 is a step of outputting a message for selecting a format for displaying a plurality of purchased songs included in the purchase list. The order of the song titles can be downloaded in the order of date or alphabetical order. When the format is selected, a message list of purchased songs is sent to the terminal. If one of the songs is selected, the song detailed information is presented to confirm whether the song intended by the user is correct (step 405). Subsequently, a guide message about the file size and the expected download time is sent (step 406), and once again confirmed whether to download now (step 407), the download is executed (step 408).

5 is a flowchart illustrating an embodiment of a music selection method according to another aspect of the present invention. Since a large number of songs are stored in the digital sound source database, it is usually very inconvenient and difficult to search through a wireless terminal having a limited size. On demand music service method and apparatus according to the present invention to solve this by supporting music selection using voice recognition.

First, a guide message about a search method is output (step 501). Such a message may be transmitted as a text message but may be transmitted as a compressed voice and demodulated and reproduced by the terminal. The guidance message presented later can all be serviced in the form of a text message or a voice message. The search method can be a variety of data related to the song, such as the song name, singer name, song lyrics. In this regard, the sound source management server of the sound source server 140 of FIG. 1 prepares an index file for searching and associates various fields including a song name, a singer name, lyrics data, and a genre with the sound source data file index.

When a selection command is input through the terminal, for example, a voice input or a corresponding numeric key (step 502), it is transmitted to the service management server 130. Subsequently, a guidance message for voice input is output, whereby the user inputs a voice command for selection of music (step 503). The user management server 130 performs voice recognition on the input voice data.

Various algorithms such as speaker-dependent or speaker-independent are known in the speech recognition algorithm, and it may be advantageous to select speaker-independent for the sound source service according to the present invention, but other algorithms such as speaker-dependent may be used.

Hereinafter, an embodiment of speech recognition processing that can be advantageously applied to the present invention will be described. First, the received voice data is preprocessed to remove noise and to remove portions other than voice. After that, the speech data is extracted in a phoneme unit through feature extraction. This process can be implemented, for example, by the method of contiuous hidden Markov Model (HMM). Subsequently, a stochastic calculation process is performed to probabilistically compare and calculate a result obtained through feature extraction in a speech database that has been developed through learning from a large number of speech samples of general words. From this the maximum approximate word is selected. The word index is the data representing the recognized voice as text data.

If the data for retrieval is extracted by the voice recognition process, the singer name can be a keyword in itself, but in the case of song name or lyrics data, keyword extraction or further text mining processing is required. As a result, the sound source management server searches the index file to find a corresponding song (step 504).

In this case, since a plurality of songs are generally searched for, a list of a plurality of songs including a singer's song or a corresponding keyword is presented to the user as a result (step 505). If a command for selecting one is inputted through the user's confirmation (step 506) with respect to the search result (step 507), the music selection is determined (step 508). Such selection using voice recognition may be provided in combination with various aspects of the present invention, including the music download service, the reservation transmission service, and the music gift service shown in FIG.

By using the voice recognition selection technology, the on-demand music service method and apparatus according to the present invention can be freed from the inconvenience of inputting letters with a small keyboard of the terminal and can be searched as a part of song lyrics. If you don't know, you can easily find a song. In addition to music searching, voice recognition can also handle download commands and movement between screens.

Although the speech recognition process associated with Fig. 5 has been described as being executed by the service management server, this aspect is not necessarily essential. Rather, considering the performance of the signal processing processor and the load of the service server embedded in the current wireless terminal, it may be more efficient for the terminal side to process the speech recognition and transmit the result to the service server by embedding the speech recognition process on the terminal side. have.

The invention is clearly defined in the appended claims to cover such various alternative embodiments.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (22)

delete delete A music service method executable by a service server accessible by a plurality of mobile communication terminals via a wireless network, the method comprising: Transmitting a music list to a mobile communication terminal; Transmitting the announcement of the song selection through voice recognition to the mobile communication terminal; Receiving voice data corresponding to a music selection command from a mobile communication terminal; A preprocessing step of removing noise and non-voice signals from the received voice data, a feature extraction step of the voice signal, and a word extraction step of searching for the most similar words by comparing the extracted result with statistical feature extraction values stored in a database And performing voice recognition on the received voice data, the method comprising: outputting a recognition result corresponding to the searched word; Searching sound source data with at least one keyword included in the recognized data; Adopting the tune found as a result of the search as the tune selected by the user; Billing for the selected songs and adding them to a customer-specific purchase list; Extracting the sound source data from the sound source server and transmitting the sound data to the requested mobile communication terminal without additional purchase charge processing when a request for retransmission of the purchased song is performed; Music service method executable in the computer comprising a. The method of claim 3, wherein the method is: Transmitting a question asking a transmission method to a customer terminal; If the customer selects a reservation transmission, receiving a reservation time to transmit therefrom; A reservation transmission step of checking a time and transmitting music data in the case of a reservation time for the customer; Music service method executable in the computer, characterized in that it further comprises. The method according to claim 4, wherein the reservation transfer step is: Checking whether it is a reservation time for the customer; Calling the terminal of the customer at a reservation time; Checking whether or not to download the call path with the terminal of the customer; Downloading sound source data when acquiring; Music service method executable in the computer comprising a. The method according to claim 4, wherein the reservation transfer step is: Checking whether it is a reservation time for the customer; Automatically opening a data call path and downloading sound source data to the terminal of the customer at a reservation time; Music service method executable in the computer comprising a. delete delete A music service method executable by a service server accessible by a plurality of mobile communication terminals via a wireless network, the method comprising: Receiving receiving terminal information including a receiver's telephone number from a mobile communication terminal; Transmitting a music list to a mobile communication terminal; Transmitting the announcement of the song selection through voice recognition to the mobile communication terminal; Receiving voice data corresponding to a music selection command from a mobile communication terminal; A preprocessing step of removing noise and non-voice signals from the received voice data, a feature extraction step of the voice signal, and a word extraction step of searching for the most similar words by comparing the extracted result with statistical feature extraction values stored in a database And a voice recognition process of the received voice data including the step of outputting a recognition result as an index corresponding to the searched word. Searching sound source data with at least one keyword included in the recognized data; Adopting the tune found as a result of the search as the tune selected by the user; Adding the selected song to the recipient's purchase list; A retransmission step in which the receiver extracts sound source data from a sound source server and transmits it to the requested mobile communication terminal without additional purchase charge processing when a request for retransmission of the previously purchased music is performed; Music service method executable in the computer comprising a. The method of claim 9, wherein the method is: Transmitting a question asking a transmission method to a customer terminal; If the customer selects a reservation transmission, receiving a reservation time to transmit therefrom; A reservation transmission step of checking a time and transmitting music data in the case of a reservation time for the customer; Music service method executable in the computer, characterized in that it further comprises. 11. The method of claim 10, wherein the step of sending reservation is: Checking whether it is a reservation time for the recipient; Calling the terminal of the customer at a reservation time; Checking whether or not to download the call path with the terminal of the customer; Downloading sound source data when acquiring; Music service method executable in the computer comprising a. 11. The method of claim 10, wherein the step of sending reservation is: Checking whether it is a reservation time for the customer; Automatically opening a data channel and downloading sound source data to the terminal of the customer at a reservation time; Music service method executable in the computer comprising a. delete delete delete A music service method executable by a wireless terminal connectable to a service server via a wireless network, Receiving a list of music from a service server; Outputting a guide message for selecting a song through voice recognition; Receiving a voice command corresponding to a selection command; A preprocessing step of removing noise and non-voice signals from voice data, a feature extraction step of the voice signal, a word extraction step of searching the most similar words by comparing the extracted result with stored statistical feature extraction values, and a searched word A voice recognition step of outputting a recognition result corresponding to the voice recognition step; Transmitting the speech recognition processed recognition result to a service server; Receiving and outputting a corresponding song list message from a service server, receiving a final selection command from the service server, and transmitting the received song selection message to the service server; A receiving step of receiving sound source data for the selected song from a service server; A listening step of presenting a music list stored in the terminal to the user and decoding and playing the selected music; A retransmission step of receiving a retransmission request for previously purchased songs from the user and transmitting them to the service server and receiving the retransmission after checking the list of previously purchased songs from the service server; Music service method executable in a wireless terminal comprising a. A computer-readable recording medium having recorded thereon a program for realizing a music service method according to claim 16. delete An on-demand music service system for processing music orders from a plurality of wireless terminals accessible through a wireless network, A sound source server for storing and managing a plurality of sound source data; A purchase list database for storing previously purchased song data for each customer; A wireless communication server supporting interconnection with a wireless data communication system; Receives the music selection command from the customer's wireless terminal, removes noise and non-voice signals from the received voice data, preprocesses the voice signal, extracts the feature of the voice signal, and compares the extracted result with statistical feature extraction values stored in the database. Search for the most similar words, select a song from the recognition result corresponding to the searched word, charge the selected song, send it to the customer's terminal, add it to the customer's purchase list database, and the customer's terminal A service management server for extracting sound source data from the sound source server and transmitting the extracted sound source data to the requested mobile communication terminal without additional purchase charge processing; A digital encoding server for compressing an original sound source into a digital sound source suitable for wireless communication and storing the original sound source in the sound source server; Music service system comprising a. delete delete delete