KR20030020195A - Voicedata execution system that have decoder and player within - Google Patents

Abstract

PURPOSE: A real-time compressed voice data reproduction system including a decoder is provided to reduce load of a main service provider and to allow a receiving part to download voice data to the receiving part's terminal within a short period of time. CONSTITUTION: A real-time compressed audio data reproduction system includes an encoding unit(41), a storage(42), a decoding unit, a sound quality tester, and an execution file generator(44). The encoding unit divides input voice data into predetermined units using an encoder and compresses each divided voice data, to generate encoded voice data. The storage stores the encoded voice data. The decoding unit decompresses the encoded voice data using a decoder. The sound quality tester tests sound quality of the voice data using a reproduction device. The execution file generator generates the encoded voice data, the reproduction device and the decoder as an execution file.

Description

Compressed voice data real time playback system with built-in decoder {Voicedata execution system that have decoder and player within}

The present invention relates to the real-time reproduction of compressed voice data, and in particular, since the player and decoder are loaded together with the voice data and transmitted so that the voice data can be heard in real time, the receiver can perform voice mail without an execution program capable of listening to the compressed voice data. The present invention relates to a compressed voice data real-time reproducing system with a built-in decoder that can check the load, reduce the load on a server of a mail service provider, and provide a long recording time to a user of a voice mail or an image mail.

In general, voicemail is used on the Internet, and when a caller logs in to a voicemail service provider and records and transmits voice data using a device such as a microphone, the receiver uses voice software to execute voice data. Check the contents of the voice data through the speaker.

On the other hand, when sending and receiving voice mail, the sender records and transmits the voice data within a limited time according to the method provided by the mail service provider, and the voice data is stored in the sender's mail service provider server. The mail is sent to the recipient so that the voice data stored in the server can be checked.

When the receiver selects voice mail to listen to the voice data, the voice data is transmitted to the receiver in the form of a series of voice data from the sender's mail service provider server, not the receiver's mail service provider's server. In order to listen to the data, the caller's mail service provider must be connected to the server, and even if the user wants to store the voice data, the caller's mail service provider server can store the voice data on the receiver's computer at a slow rate.

In addition, to check the voice mail, the receiver downloads a decoder capable of executing the voice data from the sender's mail service provider to check the voice data after installation, or the voice data execution software stored in the server of the sender's mail service provider. Is activated to confirm the voice data.

The image mail combined with the image and the voice data also uses the voice data in the same manner as the voice mail.

Therefore, the receiver must be connected to the server of the sender's mail service provider in order to play the voice data received by mail, and the receiver must be connected to the server of the sender's mail service provider to store the voice data in his terminal. There is a problem that takes a long time to save.

If the receiver does not store the voice data in the terminal, the mail service provider deletes the voice data from the server after a certain period of time. This is because the size of the voice data is large, causing a large load due to the storage capacity of the mail service provider server.

This disadvantage increases the load on the server of the mail service provider as the number of users increases, so in order to provide a voice mail or video mail service, the storage time of the stored voice mail and the recording time of the voice mail are shortened. I'm using a reduction method.

1 is a schematic configuration diagram that can transmit and receive voice mail through the Internet as follows.

The configuration is used to send and receive voice data by connecting the microphone 11 and the speaker 13 to the terminals (10, 12), mail service providers 1 to n (14, 17) and a mail server 15, 18, a voice mail server 16, etc., which are connected to the mail service provider 1 14 and provide a service to a user.

When the sender of the voice mail records the desired voice and transmits the mail in the order provided by the voice mail server 16 of the mail service provider 1 14 using the microphone 11 connected to the terminal 10, the mail service provider The voicemail server 16 of 1 (14) stores the recorded voice data in the voicemail server 16 of its own mail service provider 1 (14).

The mail server 18 of the recipient's mail service provider n (17) transmits only the indication that the voice mail has been transmitted. That is, the voice data recorded and transmitted by the sender is stored in the voice mail server 16 of the sender's mail service provider 1 14 without being transmitted to the receiver, and informs the receiver that the voice mail has been received.

Therefore, when the receiver of the voice mail selects the voice mail by logging into the mail service provider n (17) to check the mail, the voice mail server 16 of the sender's mail service provider 1 (14) executes a voice data reproducing program. The sender loads the recorded voice data so that the receiver can listen to the contents of the voice mail.

That is, when the receiver checks the voice mail, selects the received mail by logging in to the mail service provider n (17), the actual execution of the voice data is performed by the voice mail server 16 of the sender's mail service provider 1 (14). The recorded voice data in the storage device is listened through the speaker 13 of the terminal 12 via the network to the recipient's mail service provider n 17 in a continuous sequence of bytes. However, the voice data is not stored in the terminal 12 of the receiver because the voice data is provided in a continuous sequence of bytes provided from the sender's mail service provider n (17).

In other cases, when the sender sends a voice mail and the voice data is transmitted to the recipient's mail service provider n (17), the terminal 12 is provided with an executable program incorporating a decoder and a player capable of executing the voice data. To check the data.

In this case, however, the longer the caller recorded voice data, the longer the receiver will download the recorded voicemail.

And as the number of users of voice mail or video mail programs increases, it is difficult to provide a lot of recording time due to the load caused by large voice data of mail service providers 1 to n (14, 17). There is a problem in that a voice mail service is provided in a way of reducing the period for storing voice data in order to reduce the load on the server of (14, 17).

This problem is because the file format of the voice data uses the WAV format, which is a widely used method. In order to solve this problem, it is necessary to reduce the size of the voice data by compressing the voice data, but in this case, a decoder capable of reproducing the compressed voice data in the receiver terminal 12 is required.

In the related art, mail service providers 1 to n (14, 17) provide a limited recording time due to a large load on the server due to the large capacity of the voice data. The sender's mail service providers 1 to n (14, 17) are continuously connected to the server or download the decoder to execute the voice data, there is a problem that the download time is long when stored in the terminal 12 of the receiver.

The present invention is to solve the problems described above, when recording the voice data using a microphone attached to the terminal, separates the voice data by 8000 bytes, and again generates 500 bytes of G.729 encoded voice data It has higher compression rate than general WAV file, and it checks the sound quality of recorded voice data using a player, and if there is no error, it loads the encoded voice data, the player, and the decoder which decompresses the encoded voice data into one executable file. By sending a message to the recipient, the recipient of the voicemail can listen to the received voicemail in real time if the user selects it without having to install another executable program.

In addition, since the voice mail is stored in the recipient's mail service provider n (17) like a normal text mail, the load of a mail service provider that provides voice mail or video mail can be reduced, and the desired time can be recorded. Is a voice data real-time playback device and method with a decoder that can download voice data to a terminal in a short time and improve compression to reduce the load on mail service providers 1 to n (14, 17). Its purpose is to provide.

1 is a schematic configuration diagram capable of transmitting and receiving voice mail over the conventional Internet.

2 is a schematic diagram of an embodiment in which the present invention is applied to a mail service provider.

3 is a schematic diagram of an embodiment of a voice data real time playback system incorporating a player and a decoder of the present invention;

4 illustrates a voice data player according to the present invention;

5 is a diagram showing the configuration of a voicemail transmitted when recording and transmitting a voicemail according to the present invention.

6 is a flowchart illustrating operations of a voicemail server when a caller records voice data according to the present invention.

7 is a flowchart of an operation for the receiver to confirm the voice data of the present invention.

Description of the main parts of the drawing

10, 12, 30, 32: terminal 11, 31: microphone

13, 33: speaker 14, 17: mail service provider 1, n

15, 18, 35, 39: mail server 16, 36: voice mail server

34, 38: Mail service provider 1, 2

37: image mail server 40: information providing server

41: voice data encoder 42: voice data generation and storage

43: voice data playback and editor 44: executable file generator

50: player

A feature of the present invention for achieving the above object is generated by encoding means, encoding means for separating input speech data into a predetermined size with an encoder and compressing each separated speech data to generate encoded speech data. A storage means for storing the encoded speech data, a decoding means for decompressing the encoded speech data using a decoder, a sound quality testing means for testing the sound quality of the speech data using a player, an encoded speech data, a player and a decoder It includes an executable file generating means for generating an executable file.

Further, the encoding means includes separating the input speech data into a size of 8000 bytes to generate 500 bytes of encoded speech data, and the decoding means separating the encoded speech data into a size of 500 bytes to convert the speech data into 8000 bytes of speech data. It further includes decompressing.

In addition, when the voice data is input, generating and storing encoded speech data that is separated into a predetermined size and compressed to a predetermined size, testing the sound quality by executing the stored encoded speech data, and when the sound quality is confirmed, the encoded speech And decompressing the data and the encoded voice data and generating one voice executable file that can listen to the voice data.

In addition, in a computer-readable recording medium, receiving the voice data, separating the voice data into a predetermined size and generating compressed voice data compressed to a predetermined size, and storing the encoded voice data. And separating the encoded voice data into a predetermined size and restoring it into a wave shape having a predetermined size, checking a recording state of the stored encoded voice data, and encoding the voice so that the receiver can listen in real time when the receiver selects the voice mail. Mounting a decoder on the data to generate one executable file.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating an example in which a method of reproducing voice data incorporating a player and a decoder of the present invention is applied to an Internet mail service.

The configuration is composed of the terminals 30 and 32, the microphones 31 and the speakers 33 attached to the terminals 30 and 32, and the mail service providers 1 and 2 (34 and 38) that provide various services through the Internet. Server 35, 39, voice mail server 36, image mail server 37, information providing server 40, and the like.

When the caller connects to the Internet and logs in to the mail service provider 1 (34) and selects the transmission of the voice mail, the voice mail is executed in the voice mail server 36 or the image mail server 37 of the mail service provider 1 (34). The program is loaded and the caller records the voice data using the microphones 31 attached to the terminals 30 and 32. When the recording of the voice data is completed and transmitted, the caller records the encoded voice data and encodes the voice data. A player for executing the encoded voice data and a decoder for decoding the encoded voice data are built in and delivered to the receiver's mail server.

In other words, when voice data is selected at the time of transmission, the player and the decoder are loaded and transmitted to the receiver's mail server so that the voice mail can be immediately heard.

On the other hand, when the sender of the voice mail records the voice data through the microphone 31 of the terminals 30 and 32, the voice data is first divided into 8000 bytes, and then the encoder is encoded using G.729 encoding. Create and save as voice data. And the voice data stored as G.729 encoded voice data can be checked by using a player, and a player, decoder and voice data capable of executing G.729 voice data are generated as one executable file to receive voice mail. Is sent to the mail service provider 2 38, which is the address of.

In addition, if the recipient of the voice mail checks the voice mail, the user simply selects the voice mail by simply logging in to the mail service provider 2 38 and using a text mail that is normally used, and the player operates in real time. Decode the voice data to check the voice mail with the speaker 33 or earphone of the terminal (30, 32). Therefore, there is no need for an execution program to execute voice data separately, and the storage of voice data is also stored in the recipient's mail server 39, which has a large capacity in the conventional sender's voice mail server 36 or image mail server 37. The load of storing all the voice data can be reduced, and the voice data can be compressed about 16 times as compared to the voice data of the conventional WAV file.

On the other hand, the player, the encoder and the decoder are conventionally stored in the form of ACM driver in the case of the Windows operating system so that the ACM driver can be read and played back through the ACM driver when the player is played back. However, the player, the encoder and the decoder of the present invention are separate. Save it as a file, then refer to it for playback and recording.

On the other hand, the voice data reproducing system incorporating the player and decoder of the present invention is encoded to compress the sender's voice data, and the size of the compressed voice data is reduced by about 16 times compared to WAV. Is sent to the mail server 39, and the receiver receives the compressed voice data from the mail server 39 of the mail service provider 2 38 as it is, in order to reproduce the voice data, without converting it into a WAV format. Play it as it is.

In order to listen to voice data, a receiver is generally required in the receiver's terminal. When the voice data is transmitted, the receiver and decoder are loaded together in the compressed voice data. Voice data can be played back.

The size of the voice data is about 16 times smaller than the WAV format and can be stored directly in the receiver's terminal. ITU-T's G.729 method was used to develop a combination standard of communication equipment and systems to compress about 16 times. G.729 is an uncommon speech codec method, and the encoder and decoder are not currently in the Microsoft Windows environment.

Briefly, G.729 is as follows. G.729 was developed by ITU-U Study Group 15 for use in the Multimedia & Personal Communication Service in 1993 and was standardized in 1995 as the ITU-T Recommendation.

The sound quality of G.729 has been reported to have equal or better quality compared to 32kbps ADPCM (G.726) .Mean Opinion Score (MOS) is a standard published by ITU, which is voiced by CODEC (CODE / DECODE). When digitization is digitized, it is a quantitative quantitative measure of voice quality, and people directly listen to voice and evaluate voice quality.

The value of MOS is classified as 5: best, 4: good, 3: just yes, 2: poor, 1: unsatisfactory, and G.729 has a value of 3.92. G.729 is an algorithm that codes voice signals at 8kbit / s using CS-ACELP based on Code-Excited Linear-Prediction.

Since we code 80 samples (bits) every 10ms, we code 8000 samples per second, which is 8 kbps.

3 is a schematic diagram of an embodiment of a voice data real-time reproducing system incorporating a player and a decoder of the present invention.

Voice data encoder 41 that receives voice data and divides the voice data into 8000 bytes, and voice data generated by 8000 bytes using the encoder to generate and store 500 bytes of G.729 encoded voice data. And the storage unit 42 and the voice data generation and storage unit 42, play and check the stored voice data, and when an abnormality occurs, the voice data playback and editor 43 and the caller to edit the voice data immediately receive the voicemail. An executable file generator 44 for generating a player, a decoder, and the voice data as one executable file in the voice data.

On the other hand, Figure 4 shows a voice data player 50 according to the present invention, when the voice mail is selected by the receiver, the voice data player 50 as shown in the drawing is executed to separately receive the voice data without the execution program voice mail can confirm.

Figure 5 shows the structure of a voice mail transmitted when recording and transmitting a voice message according to the present invention.

Voicemail consists of a player that can execute voice data, a decoder that decodes coded voice data, and voice data, which is the contents of recorded voice, in the form of an executable file and is sent to the recipient. You can hear the contents of the voice.

6 is a flowchart illustrating an operation in which a caller according to the present invention accesses a mail service provider 1 34 to record a voice message.

The voice data is input using the microphone 31 attached to the terminals 30 and 32 in order to log in to the mail service provider 1 34 through the Internet using the terminals 30 and 32 to transmit voice mail. (Step S70).

Voice data is separated into 8000 bytes in the order that the voice data is input, and the separated voice data is generated using the encoder to generate 500 bytes of G.729 encoded voice data and stored in the memory (steps S71 and S72). .

On the other hand, when the caller finishes recording the voice data, the voice mail server checks the voice data with the stored G.729 encoded voice data using the player, and checks whether the sound quality of the voice data can be sent to the voice mail (step S74, S75).

If the sound quality of the voice data is not good, the voice mail sender is returned to step S70 for inputting and storing the voice data again (step S76).

When the sender of the voicemail transmits, the voicemail server uses a voice data player and a decoder to decode the voice data so that the receiver can execute the G.729 encoded voice data stored in the memory. The voice mail is sent to the recipient's mail address in the form of an executable file (steps S77, S78, S79).

7 is a flowchart illustrating an operation of confirming a voice mail by the mail service provider 2 38 by a receiver of the voice mail of the present invention.

When the recipient logs in to the mail service provider 2 38 providing the mail service, an indication indicating that the voicemail has been received is displayed like other text mails, and the receiver can download the voicemail or execute the voicemail to listen to the voice data. will be.

When the receiver presses the play button of the voice mail, the voice data player 50 of FIG. 5 is executed, and the decoder and the voice data are installed in the receiver's terminal. At this time, the installation on the receiver's terminal is automatically progressed to the background process and the receiver cannot detect the installation (steps S80 and S81).

Next, by loading the decoder information for executing the voice data, the decoding information uses G.729, and the processing speed of the voice data can be increased by converting the processing of the bit data of the bit unit into the unit of byte (step). S82).

That is, when the receiver selects the received mail to confirm the voice mail and executes the player 50, the decoder and the voice data are installed in the receiver's terminal, and the decoder information for executing the voice data is loaded.

Next, the player 50 must recognize the start and end points of the decoder constituting the voice mail and the position information of the start and end points of the voice data to install the decoder and execute the voice data.

The player 50 makes it possible to read the file at the start position of the audio data (step S83).

In order to reproduce the voice data in real time, it moves to the start position of the voice data, loads 500 bytes of voice data, and decodes the 500 bytes of voice data into 8000 bytes of wave (Wav) data in the decoder, then reproduces the 8000. The audio data of bytes is destroyed. Next, the voice data is repeated by decoding the 500-byte voice data into the 8000-byte wave data by the decoder to execute the voice data (steps S84, S85, S86, S87).

In addition, the generation and transmission of the voice data, the decoder and the executor according to the present invention as one executable file can be applied not only to the G.729 method but also to a general use method, so that voice data is separately received at the time of receiving the voice mail. No program is needed to run it.

As described above, the receiver confirms the voice mail in real time, and in executing the voice data, the receiver does not access the sender's mail service provider 1 34 to verify the voice mail, thereby providing the voice mail. The load on the mail service provider 1 (34) server can be reduced, and there is no need to install a program for executing voicemail. In addition, the recording time of the voice mail can be recorded as much as the user wants. In addition, the recipient's mail service provider 2 (38) can also check voice mail in real time by selecting it as a text mail without installing a program for executing voice data to check voice mail. It will also be used to identify the orderer correctly by speaking the order.

As described above, in the present invention, in transmitting a voice mail, an executor and a decoder are loaded into a voice file in which a message is recorded and transmitted as one executable file, so that the recipient of the voice mail does not need any other executable program, but in real time. You can check your voicemail.

As described above, the present invention loads the decoder together with the decoder and transmits the voice data so that the load of the sender's mail service provider's mail server can be reduced, so that the sender can record the voice for a desired time. Since the data is transferred to the receiver's mail service provider's mail server, the data load on the sender's mail service provider's mail server can be greatly reduced, thereby reducing the load. It does not need to be constantly connected to the mail server of the server, it can considerably reduce the download time when stored in the receiver's terminal, extend the duration of voice mail stored in the mail server of the mail service provider, and execute voice data. You can listen without the program It is effective to record the request of goods in a transaction by voice and use it for orders.

Claims (7)

Encoding means for separating the input speech data into a predetermined size with an encoder and compressing each of the separated speech data to generate encoded speech data; Storage means for storing the encoded speech data generated by the encoding means; Decoding means for decompressing the encoded speech data using a decoder; Sound quality testing means for testing the sound quality of the voice data using a player; And Executable file generating means for generating the encoded speech data, the player and the decoder into one executable file; Compressed voice data real-time playback device with a built-in decoder comprising a. The method of claim 1, wherein the encoding means, And separating the input voice data into a size of a predetermined byte to generate coded voice data of a predetermined byte. The method of claim 1, wherein the decoding means, And decompressing the encoded speech data into a predetermined byte size and decompressing the encoded speech data into the speech data of the predetermined byte. Generating and storing encoded speech data compressed to a predetermined size and separated into a predetermined size when the voice data is input; Testing sound quality by executing the stored encoded speech data; And If the sound quality is confirmed, decompressing the encoded voice data and the encoded voice data and generating one voice executable file to listen to the voice data; Compressed voice data real-time playback method with a built-in decoder comprising a. The method of claim 4, wherein When the voice executable file is sent to the receiver, Executing the player embedded in the voice executable file when the receiver selects the voice executable file; Loading the decoder for decompressing the encoded speech data; And The player playing the decompressed voice data to receive a voice mail through a speaker or the like; Compressed voice data real-time playback method with a decoder further comprising a. The method of claim 5, The player 50 further includes a play button and a stop button for executing the voice data. In the recording medium readable by the terminal, Receiving the voice data, separating the voice data into a predetermined size and generating compressed speech data compressed to a predetermined size again; Storing the encoded speech data; Dividing the encoded speech data into a predetermined size and restoring a waveform having a predetermined size; Confirming a recording state of the stored encoded voice data; And Generating an executable file by mounting an encoder and a decoder on the encoded voice data so that the receiver can listen to the voice mail in real time; Recording medium, characterized in that for generating and executing compressed voice data.