KR20080019665A - System and method for serving sound source in mobile communication network - Google Patents

Abstract

A system and a method for providing sound sources for a mobile communication supplementary service are provided to lower a sampling rate of a frequency area where reproduction is difficult in consideration of reproduction characteristics of a portable terminal when extracting the sound sources from a general music CD(Compact Disc), thereby reducing a size of compression data as providing the same sound quality level. A system for providing sound sources for a mobile communication supplementary service comprises a computer system(100), a digital sound source system(300), at least one or more servers(400) of a mobile communication provider, and at least one or more portable terminals(500). The computer system comprises the following parts. A digital spectrum sampler(110) variably applies a sampling rate when processing a size of a frequency band of a extracted sound source and a size of the sound source, and compresses the processed sound source in an MP3 or AAC(Advanced Audio Codeing)/AAC+ format. A multimedia contents formatter(120) inputs and stores music metadata about at least one or more sound sources compressed through the digital spectrum sampler. A content storage(130) matches the sound sources, compressed and converted by the digital spectrum sampler, with the music metadata produced in the multimedia content formatter to produce sound source data, and stores the produced sound source data.

Description

System and method for providing sound source for mobile communication additional service {System and Method for Serving Sound Source in Mobile Communication Network}

The present invention relates to a system and method for providing a sound source for a mobile communication additional service, and more particularly, to provide a sound source having an improved sound quality while using minimal memory capacity of a portable terminal and a server for a mobile communication service provider, artists, The present invention relates to a system and method for providing a sound source for a mobile communication additional service suitable for a user searching for music easily and conveniently by standardizing music information such as album information.

Recently, with the development of technology in the mobile communication field, the spread of mobile terminals such as mobile phones, PDAs, DMBs, notebooks, etc. is continuously expanding, attracting new subscribers among mobile communication providers that provide mobile communication services, In order to continuously attract subscribers, various additional services are provided except voice or video call service.

Among the additional services related to the portable terminal, a ringtone service, a ring back tone service, a music reproduction service, and the like through a portable terminal are commercially available.

First, the ring service will be described. The ringtone service provider extracts a sound source from a general music CD in a specific section in MP3 format. Subsequently, the operator converts the extracted sound source into AAC / AAC + or MMF format, which is a format that can be played on the portable terminal, and stores the converted sound source in a ringtone server of the mobile communication service provider. Subsequently, when a user of a specific mobile terminal wants to receive a ringtone service, the user accesses a ringer server of the mobile communication service provider using a wired / wireless internet (or ARS), checks a desired ringtone, and downloads it to his / her portable terminal. . Subsequently, the user operates his portable terminal to set the downloaded ringtone as a ringtone for the call. Therefore, when a call is made to his portable terminal, the preset ringtone is played until the call is answered.

In addition, referring to the ring back tone service, a mobile communication service provider providing a ring back tone service extracts a sound source in MP3 format from a general music CD. Subsequently, the operator converts the extracted sound source into a format such as EVRC, which is a standard compression format of the voice signal of the mobile communication network, and stores the extracted sound source in the call connection tone server of the mobile communication provider. Subsequently, when a user of a specific portable terminal desires to receive a ring back tone service, the user accesses a ring back tone server using a wired / wireless internet, and then sets a ring back tone of his or her desire to store the ring back tone server. Then, when a specific caller calls the user's mobile phone number, the caller can hear the call ring tone of the EVRC format preset by the user until the caller's ring tone server of the mobile operator calls the user's own mobile phone.

In addition, when the music playback service is described, a mobile communication service provider providing a music playback service extracts a sound source from a general music CD, compresses the extracted sound source using the ITU international standard compression format of MPEG, and plays music of the mobile communication service provider. Save it to the server.

Subsequently, when a user of a specific portable terminal wants to receive a music playback service, the user accesses a music playback server using a wired / wireless internet (or ARS), and then manipulates the portable terminal to download desired music. In the case of wired Internet, music downloaded to a computer through the Internet is transferred to a portable terminal using a USB cable. Therefore, the user of the portable terminal plays and listens to all the music downloaded by operating his portable terminal.

The compressed sound source used in the ring service and the ring tone service provided in the related art includes all the frequency components of the entire range of 20 Hz to 20 KHz, which are human audible frequencies.

However, in practice, the amplifier or speaker of the portable terminal has been developed to reproduce well near the human voice frequency of 100Hz to 3KHz. Therefore, when the compressed music is reproduced through an amplifier or a speaker of the portable terminal, there is a problem that the sound quality is relatively low compared to the original sound of the CD, because a phenomenon such as sound deterioration and distortion occurs.

In addition, when the sound source provided in the ringtone service for 60 seconds in the AAC format, since the required memory capacity is about 500K bytes or more, there was a problem that occupies a considerable memory capacity compared to the total capacity of the memory of the portable terminal.

In addition, when a music playback service is provided in the related art, a sound source is stored and used in the MPEC standard compression format.

However, since MPEG technology has evolved in the direction of compressing the original sound without loss, optimal compression considering the characteristics of a portable terminal as a playback device is not considered. On the other hand, data transmission technologies and portable terminals in mobile communication networks have been developed to compress and reproduce human voices most efficiently.

In other words, general CD music contains all the frequency components in the entire range of 20Hz to 20KHz, which is the human audible frequency, but in practice, the amplifier or speaker of a portable terminal can play well around 100Hz to 3KHz, which is a human voice frequency. Frequency components below 3KHz and below are sections in which the actual sound quality is not significantly affected even when compressed. As a result, it is very inefficient to store a sound source compressed in the MPEG format in a server or a portable terminal of a mobile communication service provider.

An object of the present invention has been made in view of the above-described problems of the prior art, and the variable sampling that is difficult to reproduce in a portable terminal when compressing a sound source reduces the sampling rate as much as possible, and increases the sampling degree in a well reproduced region. To provide a sound source providing system and method for a mobile communication additional service applying the method.

Another object of the present invention is to provide a standardized metadata (Metadata) including the lyrics, composition / song, singer, album information and consumption distribution information for the ringtone, call connection sound, music playback service source added to the mobile communication An object of the present invention is to provide a sound source providing system and method for a mobile communication additional service.

In order to achieve the above object, a sound source providing system for a mobile communication supplementary service is applied by processing a sampling rate variably when processing a frequency band and a size of an extracted sound source, and processing the processed sound source as MP3 or AAC / AAC +. A digital spectrum sampler 110 for compressing the data into a format; A multimedia contents formatter 120 for inputting and storing music information about at least one sound source compressed through the digital spectrum sampler 110 and compressed by the digital spectrum sampler 110 The computer system 100 includes a content storage unit 130 for storing the converted sound source and the sound source data generated by matching the music information (Metadata) produced by the multimedia content formatter 120 to the respective sound sources. )and; A digital sound source system connected to the computer system 100 through the Internet 200 and controlling uploading, deleting, or management of the sound source data generated by the computer system 100 under the control of an operator ( 300); It is connected to the computer system 100 through the Internet 200, and stores the sound source data generated by the computer system 100 under the control of the digital sound source system 300, at the request of an authenticated user A server 400 of at least one mobile communication provider for selectively providing stored sound source data; It is connected to the Internet 200 or the mobile communication network 600, characterized in that composed of at least one or more portable terminals 500 to receive a sound source service for mobile communication additional service from the server 300 of the mobile communication provider.

Here, the digital spectrum sampler 110 may reduce the sampling degree as much as possible in the frequency region that is difficult for the portable terminal to reproduce when sampling the sound source, and increase the sampling degree in the well reproduced region.

Here, the digital spectrum sampler 110 samples 128 Kbps at 100 Hz to 1 KHz, 32 Kbps at 50 Hz to 100 Hz, 8 Kbps to 50 Hz or less, 64 Kbps to 1 KHz to 3 KHz, and 32 Kbps to 3 KHz to 5 KHz. 5KHz or more is 8Kbps variably sampling for each frequency band, it is preferable to average the sound pressure of the sound source between 50-70 dB t.

According to another aspect of the present invention, there is provided a method of providing a sound source for a mobile communication additional service, comprising: extracting at least one specific sound source by a worker in a computer system; Editing and processing by applying a sampling rate variably when processing the frequency band of the sound source extracted from the computer system and the size of the sound source; Averaging the sound pressure of the sound source to a predetermined level in the computer system; Compressing the processed sound source in MP3 or AAC / AAC + format in the computer system; Creating and storing respective music information about the sound source in the computer system; And generating and storing at least one sound source data in which the respective sound sources and music information related thereto are combined together in the computer system.

The method may further include storing the one or more sound source data generated by the computer system in at least one server of any mobile communication service provider using a digital sound source system; Requesting a sound source service for a mobile communication supplementary service by accessing a server of the mobile communication provider by an authenticated portable terminal user; The method may further include selectively providing the stored sound source data to the portable terminal according to the request of the portable terminal user.

Here, it is preferable that the sound source service for the mobile communication additional service includes a ringtone, a call connection sound, and a music reproduction service.

According to the above-described system and method for providing a sound source for a mobile communication additional service, when a sound source is extracted from a music CD for a ring tone, a call connection sound, or a music playback service, the playback is performed in consideration of the playback characteristics of the portable terminal. In the difficult frequency region, the sampling rate can be lowered to reduce the compressed data size to the same sound quality level.

Therefore, a mobile communication service provider can greatly reduce the large storage space for storing ringtones, call connection sounds, and music playback services for hundreds of thousands of pieces of music. The data size of the portable terminal can be used more efficiently, and the sound quality can be improved.

In addition, since the user can download the same sound quality ringtone, call connection sound, and music playback service in a smaller capacity than before, data call charges can be significantly reduced.

In addition, in the case of using a mobile communication additional service source, standardize metadata including lyrics, composition / composition, singer, album information, and consumption distribution information for each ringtone, a ringing tone, and a music playback service. Since it can be provided, the management of each original sound can be more efficient, and in terms of users, mobile communication supplementary services are easier, faster, and faster than before by using a method such as searching or sorting music in various patterns. Make it convenient.

Hereinafter, a configuration of a sound source providing system for a mobile communication additional service according to the present invention and a sound source providing procedure will be described with reference to the accompanying drawings.

1 is a block diagram of a system for providing a sound source for a mobile communication additional service according to the present invention. Referring to FIG. 1, a sound source providing system for a mobile communication additional service according to the present invention applies a processing rate by variably applying a sampling rate when processing a frequency band of an extracted sound source and a size of a sound source, and processes the processed sound source as MP3 or A digital spectrum sampler 110 for compressing in the AAC / AAC + format; The multimedia contents formatter 120 for inputting and storing music information about at least one sound source compressed through the digital spectrum sampler 110 and the digital spectrum sampler 110 compressed and converted. A computer system (100) comprising a sound source and a content storage unit (130) for storing sound source data generated by matching music information (Metadata) produced by the multimedia content formatter 120 to each sound source; A digital sound source system 300 connected to the computer system 100 through the Internet 200 and controlling uploading, deleting, or management of sound source data generated by the computer system 100 under the control of an operator; Connected to the computer system 100 through the Internet 200, the sound source data generated in the computer system 100 is stored under the control of the digital sound source system 300, and stored at the request of the authenticated portable terminal 500. A server 400 of a mobile communication provider for selectively providing sound source data; It is connected to the Internet 200 or the mobile communication network 600, and consists of at least one or more portable terminals 500 to receive a sound source service for mobile communication additional service from the server 300 of the mobile communication provider.

Here, the digital spectrum sampler 110 of the computer system 100 extracts a sound source stored in a storage medium (eg, CD, USB) by using a built-in sound source editing program (eg, Sound Forge). Cut into sections Subsequently, the frequency characteristics and the size of the sound source are edited and processed by variably applying a sampling rate to suit the purpose of the present invention and the needs of the operator. In other words, in the frequency region in which the portable terminal is difficult to reproduce the sound source, the sampling degree is lowered as much as possible, and the variable sampling method is used to increase the sampling degree in the well reproduced region. In addition, the processed sound source is converted into a compression method in the MP3 or AAC / AAC + format to be reproduced in the portable terminal 500.

In addition, the music information produced by the multimedia content formatter 120 of the computer system 100 is preferably configured with items and formats as shown in Table 1 below, but the format and items are not limited.

Table 1 below shows the song title, composition, song writer, arranger, composition intent / description of the song, song length, song lyrics, album name, album producer / author, year / year of album release, year of album production, album production It consists of intent / description, album jacket image, digital original sound name, digital original sound sampling information, digital original sound length, digital original sound distribution path, and digital original sound information usage fee items, but it can be composed of these optional combinations as necessary.

TABLE 1

In addition, the sound source data generated by the content storage unit 130 of the computer system 100 does not limit or limit the types of sound source data provided to a ring tone, a call connection sound, and a music reproduction service, or the types of the sound source data.

Hereinafter, a procedure of providing a ringtone service in a sound source for a mobile communication additional service will be described in detail with reference to FIGS. 1 to 3.

Generally, music CDs contain music data sampled at 44.1KHz. The operator of the computer system 100 extracts specific music from a general music CD using a sound source editing program (S101), and cuts the extracted music into appropriate sections if necessary. At this time, in the embodiment of the present invention, if a ringtone service is described as an example, it is preferable that an operator extracts a music section most suitable as a ringtone based on a length of about 60 seconds.

Subsequently, the extracted music is edited and processed at a variable sampling rate that is optimal for the reproduction characteristics of the portable terminal 500 such as a mobile phone, a PDA phone, a DMB phone, a notebook computer, and the like (S102).

Here, the portable terminal 500 is designed to reproduce the voice of the person best, and reproduces the band of 100Hz to 1KHz which is the frequency of the voice of the universal person. However, general music is composed of not only songs that are human voices, but also various musical instruments, which are composed of frequency components of 20Hz to 10KHz or more.

Accordingly, as shown in FIG. 3, the operator can reduce the sampling rate of the frequency region where music can not be played well by the portable terminal and increase the sampling degree in the well-played region. For example, it is desirable to process the original sound of better sound quality in a portable terminal with data of less size than the AAC / AAC + format.

For example, when a general sound source is extracted and edited and processed into a ringtone service sound source, conventionally, in AAC, which is a ringtone format, a specific music is sampled at 64 Kbps in all frequency bands and processed into a ringtone. At 100Hz to 1KHz, it is desirable to sample at 128Kbps, 50Hz to 100Hz at 32Kbps, 50Hz and below at 8Kbps, 1KHz to 3KHz at 64Kbps, 3K to 5KHz at 32Kbps, and 5KHz and above at 8Kbps.

In the case of applying such a variable sampling method, in the case of popular music of about 60 seconds, it has a capacity of about 500K bytes or more when sampling in the AAC format, but in the case of variable sampling, it is about 200K bytes in size less than half of the conventional method. It has a capacity, and when played on a portable terminal, the sound quality is better than that of the AAC format.

Subsequently, although the sound pressure of general music has a band of 30 to 100 dB, it is normalized to 50 to 70 dB t, which is the size of the playable sound of the portable terminal (S103). Therefore, the size of the sound source in the portable terminal is so large that the degradation and distortion of the sound that occurred in the past is prevented.

Subsequently, the operator inputs and stores the standardized music information of the song, record, digital sound source, etc. of the format standard as shown in Table 1 above (S104), together with each sound source and the corresponding music information. The combined sound source data is compressed into a format such as AAC / AAC + that can be reproduced by the portable terminal (S105).

Subsequently, the operator controls the digital sound source system 300 to store the compressed sound source data in the server 400 of the mobile communication operator (S106). Here, the music information as shown in Table 1 is coded by the online music provider code and the wired / wireless Internet (or ARS), and the corresponding information is automatically automatically sold at the time of sale of the mobile communication supplementary service product on the server 300 of the mobile communication provider. It provides to the portable terminal 500.

Subsequently, when the user of the portable terminal 500 wants to receive a ringtone service, after the user accesses the server 400 of the mobile communication provider provided by the mobile communication provider using wired / wireless internet or ARS (S107), The user selects a desired ringtone and downloads it to his portable terminal from the server 400 (S108).

Subsequently, the user operates his portable terminal to set the downloaded ringtone as a ringtone for receiving (S109). Therefore, when a call is made to the portable terminal of the user, a preset bell ring tone is reproduced until the user receives the portable terminal 500 (S109).

In the above-described embodiments of the present invention, a procedure for providing a ringtone service has been described, but a ring back tone service or a music playback service will also be described in the same category.

1 is a block diagram of a system for providing a sound source for a mobile communication additional service according to the present invention;

2 is a flowchart illustrating a sound source providing procedure for a mobile communication additional service according to the present invention;

3 is a view comparing frequency activation regions of hearing, music, and voice.

* Description of Symbols for Important Parts of Drawings *

100: computer system 110: digital spectrum sampler

120: multimedia content formatter 130: content storage unit

200: Internet 300: digital sound source system

400: server of the mobile communication provider 500: portable terminal

600: mobile communication network

Claims (7)

A digital spectrum sampler 110 for processing by applying a sampling rate variably when processing the frequency band of the extracted sound source and the size of the sound source, and compressing the processed sound source in MP3 or AAC / AAC + format; A multimedia contents formatter 120 for inputting and storing music information about at least one sound source compressed through the digital spectrum sampler 110 and compressed by the digital spectrum sampler 110 The computer system 100 includes a content storage unit 130 for storing the converted sound source and the sound source data generated by matching the music information (Metadata) produced by the multimedia content formatter 120 to the respective sound sources. )and; A digital sound source system connected to the computer system 100 through the Internet 200 and controlling uploading, deleting, or management of the sound source data generated by the computer system 100 under the control of an operator ( 300); The portable terminal 500 is connected to the computer system 100 through the Internet 200 to store the sound source data generated by the computer system 100 under the control of the digital sound source system 300. A server 400 of at least one mobile communication provider for selectively providing stored sound source data according to a request of the mobile terminal; A mobile device comprising at least one portable terminal 500 connected to the Internet 200 or a mobile communication network 600 and receiving a sound source service for a mobile communication additional service from a server 300 of a mobile communication service provider. Sound source providing system for communication additional service. The sound source service system of claim 1, wherein the sound source service for the mobile communication additional service includes a ring tone, a call connection sound, and a music reproduction service. According to claim 1, The digital spectrum sampler 110, when sampling the sound source, the frequency region that is difficult to reproduce the portable terminal to reduce the sampling degree as possible, characterized in that to increase the sampling degree in the well reproduced region Sound source providing system for a mobile communication additional service. 4. The digital spectrum sampler 110, when sampling the sound source, 128 Kbps at 100 Hz to 1 KHz, 32 Kbps at 50 Hz to 100 Hz, and 50 KHz or less at 8 KHz, and 64 Kbps to 3 KHz to 1 KHz to 3 KHz. 5KHz is 32Kbps, 5KHz or more 8Kbps sampling variable by frequency band, the sound source providing system for mobile communication additional service, characterized in that the sound pressure of the sound source is averaged between 50-70 dB t. Extracting at least one specific sound source by a worker in a computer system; Editing and processing by applying a sampling rate variably when processing the frequency band of the sound source extracted from the computer system and the size of the sound source; Averaging the sound pressure of the sound source to a predetermined level in the computer system; Compressing the processed sound source in MP3 or AAC / AAC + format in the computer system; Creating and storing respective music information about the sound source in the computer system; And generating and storing at least one sound source data in which the respective sound sources and music information related thereto are combined together in the computer system. The method of claim 5, Storing the one or more sound source data generated by the computer system in at least one server of any mobile communication service provider using a digital sound source system; Requesting a sound source service for a mobile communication supplementary service by accessing a server of the mobile communication service provider by using an authenticated portable terminal user using the Internet or a mobile communication network; And selectively providing stored sound source data to the portable terminal through the internet or a mobile communication network in response to a request of the portable terminal user. 7. The method of claim 6, wherein the sound source service for the mobile communication supplementary service comprises a ring tone, a call connection sound, and a music reproduction service.

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