KR100777893B1 - Mixing control device and method of a car audio system - Google Patents

Abstract

A device and a method of controlling mixing music in a car audio system are provided to increase user convenience by continuously playing songs without delay. A method of controlling mixing music in a car audio system includes the steps of: scanning all songs of a CD for predetermined time when the CD is inserted(S201,S202); extracting and storing BPM(Bears Per Minute) data by calculating and analyzing tempo of the music for one minute of each scanned song(S203,S204); mixing the songs without an interval between the songs by using the BPM data(S205); judging whether the interval between the songs is over '6'(S206); and completing the mixing operation and reproducing the CD, when the interval between the songs is below '6'(S207).

Description

Mixing control device and method of a car audio system

1 is a block diagram schematically showing the internal structure of a vehicle audio system according to an embodiment of the present invention;

2 is a flowchart illustrating a music mixing control process of a vehicle audio system according to an exemplary embodiment of the present invention.

Figure 3 is an exemplary view showing a music mixing method of a vehicle audio system according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling music mixing in a car audio system. In particular, the present invention provides a user with a music mixing function in a compact disc (CD) player in a car audio system. The present invention relates to an apparatus and a method for seamlessly listening to all songs, including between songs in a CD media.

Recently, as a vehicle is recognized as an indispensable means, various devices for providing various conveniences to a vehicle driver, in particular for a vehicle, in addition to devices necessary for driving a vehicle, for example, an engine, etc. Audio systems are being actively researched and developed.

Currently, in a vehicle audio system, when a CD is inserted into a deck, the tracks recorded on the CD inserted into the deck are sequentially and randomly played. However, in the conventional car audio system, when the CD is played, there is a blank time between the song and the song for a predetermined time and no sound is generated. There was a problem that the car audio system was directly manipulated in order to find another music or move quickly to the next song. As a result, the user's convenience of the in-vehicle audio system is reduced, and the risk of accident occurrence during driving of the vehicle increases.

Accordingly, an object of the present invention is to calculate and analyze the speed and beat (Bats per minute) of all songs recorded on a CD in a car audio system, and to enable a seamless connection between songs using a mixing technique. An apparatus and method for controlling music mixing in an audio system are provided.

An apparatus of the present invention for achieving the above objects, the apparatus for controlling music mixing of a vehicle audio system, comprising: a compact disc processing unit for playing a compact disc according to a predetermined control; A BPM data extracting unit which scans all the songs in the compact disc for each predetermined time according to a predetermined control and extracts BPM data including music fast information for 1 minute; A memory unit for storing BPM data for each song of the compact disc according to a predetermined control; The BPM data extracting unit controls the BPM data of each song of the compact disc to be extracted according to the insertion of the compact disc, the memory unit controls the BPM data of each song of the compact disc to be stored, and between the song and the song using the BPM data. The control unit for controlling the mixing so that the connection can be seamlessly.

The method of the present invention for achieving the above objects; A music mixing control method of an in-vehicle audio system, comprising: a first step of scanning all songs in the compact disc for each predetermined time as a compact disc is inserted; A second step of extracting and storing BPM data by calculating and analyzing the speed of music for 1 minute for each song scanned in the first step; A third step of mixing the songs so that the songs can be seamlessly connected using the stored BPM data; A fourth step of determining whether the BPM of the song differs by 6 or more; And as a result of the determination in the fourth step, if the BPM of the song and the song does not differ by more than 6, a fifth step of completing the mixing of all the songs and playing the compact disc.

Hereinafter, with reference to the accompanying drawings in accordance with the present invention will be described in detail. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and other descriptions will be omitted so as not to distract from the gist of the present invention.

The present invention proposes an automatic cue setting apparatus and method for a compact disc (hereinafter referred to as "CD") in a vehicle audio system.

1 is a view schematically showing the internal structure of a vehicle audio system according to an embodiment of the present invention.

Referring to FIG. 1, the vehicle audio system includes a control unit 100, a memory unit 110, a key input unit 120, a display unit 130, an audio processor 140, and an amplitude modulation (AM). / FM (Frequency Modulation) includes a tuner 150, a TAPE processing unit 160, a CD processing unit 170, and a BPM data extraction unit 180.

First, the controller 100 controls the overall operation of the in-vehicle audio system. In particular, in the embodiment of the present invention, the control unit 100 controls the BPM data extraction unit 180 to extract BPM data for each song in the CD according to the insertion of the CD, and the memory unit 110 of the compact disc. It controls to store the BPM data for each song, and performs the operation of controlling the mixing so that the song and the song can be seamlessly connected using the BPM data, which will be described in detail below, so the detailed description thereof will be provided herein. It will be omitted.

As the CD is inserted into the vehicle audio system, the BPM data extracting unit 180 scans all the songs in the CD for each predetermined time by a predetermined time by a predetermined control of the control unit, and includes the BPM data for one minute. Extract the data.

The memory unit 110 includes a program memory and data memories. The program memory stores respective programs of the in-vehicle audio system, and the data memory temporarily stores various data of the in-vehicle audio system and data generated during operation of the controller 100. In particular, in the embodiment of the present invention, the memory unit 110 stores the BPM data including the music speed information for each minute of each song of the compact disc under the control of the controller 100.

The key input unit 120 includes keys for inputting numbers and function keys for setting various functions. In particular, in the embodiment of the present invention, the key input unit 120 preferably includes a function key for selecting the vehicle audio system to operate in a music mixing mode or releasing a preset music mixing mode.

The display unit 130 displays various data output from the control unit 100, that is, track number, playback time, FAD / BAL, FF / REW, etc. in the CD mode. The display unit 130 may be implemented as a liquid crystal display unit (LCD). In this case, the display unit 130 may include an LCD controller, a memory capable of storing data, an LCD display element, and the like. Can be.

The AM / FM tuner 150 tunes a radio frequency (RF) signal received corresponding to the AM mode and the FM mode and outputs the tuned RF signal to the audio processor 140. The TAPE processing unit 160 reads the TAPE and outputs a sound source signal recorded in the TAPE to the audio processing unit 140 or performs audio processing of the sound source input through the microphone from the audio processing unit 140. Record the signal. Here, the microphone is to convert the input analog signal electrically to output to the audio processor 140. The CD processor 170 reads a CD and outputs a sound source signal recorded on the CD to the audio processor 140 or records a signal obtained by audio processing a sound source input through the microphone from the audio processor 140. (record)

The audio processor 140 inputs signals output from the AM / FM tuner 150, the TAPE processor 160, and the CD processor 170 under digital control to output digital signals under the control of the controller 100. . Here, the audio processor 140 may be implemented as a digital signal processor (DSP). In addition, the audio processor 140 controls a digital signal processing of a sound source signal input from the outside through the microphone and outputs the recorded signal to the TAPE processor 160 and the CD processor 170.

In FIG. 1, an internal structure of a vehicle audio system according to an exemplary embodiment of the present invention has been described. Next, a music mixing control process of the vehicle audio system according to an exemplary embodiment of the present disclosure will be described with reference to FIGS. 2 and 3. Let's do it.

2 is a flowchart illustrating a music mixing control process of an in-vehicle audio system according to an exemplary embodiment of the present invention, and FIG. 3 is an exemplary diagram illustrating a music mixing method of an in-vehicle audio system according to an exemplary embodiment of the present invention.

First, the vehicle audio system operates in the standby mode or the CD play mode, and when a CD is inserted (S201), all the songs in the CD are scanned for 30 seconds for each song (S202).

Subsequently, the vehicle audio system calculates and analyzes the music speed for 1 minute for each song scanned in the first step, extracts BPM data (S203), and stores the extracted BMP data in a separate memory. S204) At this time, the BPM data extracts only the beats corresponding to the "pairing" sound of the drum beat "bump" of one piece of music for each song scanned in the step S202, and multiplies the number of extracted bits by four. It is calculated. For example, if a song has 30 beats of a drum beat "even" for 30 seconds, the overall speed (BPM) of that song is 30 times 4, resulting in 120 BPM. The drum beat " even " can extract its output and frequency as high tones.

Subsequently, the on-vehicle audio system mixes the songs so that the songs can be seamlessly connected using the stored BPM data. (S205) At this time, the beginning part of the music drum until the singer's voice comes out from the music. The number of beats ("kung" of "kung") is calculated, and the beats used in the beginning of the current music has three beats of 8 beats, 16 beats, and 24 beats. According to the music mixing, the chorus part of the first played song (which also has the structure of 8 beats, 16 beats and 24 beats like the opening part) and the BPM data of the first part of the song played later are mixed together. Done. For example, a total of 10 songs from 1 to 10 songs are stored in one CD media, and the beat of the last part of the first song (the chorus) is 8 beats, and the beat of the beginning of the second song (the beginning) is recorded. Suppose that is 8 beats, as shown in Figure 3, when mixing the eight beats of the last part of the first song and the eight beats of the beginning of the second song is mixed, without the blank time between the songs, that is, Music can be connected seamlessly between songs.

Subsequently, the in-vehicle audio system determines whether the BPM of the song and the song under mixing differ by 6 or more (S206), and as a result of the determination in step S206, if the BPM of the song and the song differs by 6 or more, If it does not appear, the mixing of all the songs is completed and the compact disc is reproduced (S207). Accordingly, the user can seamlessly listen to all the songs including the songs in the CD media.

However, as a result of the determination in step S206, if the BPM of the song differs by 6 or more, the next song is SKIPed and returned to the step 205 to mix.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

The present invention as described above has the advantage of increasing the user convenience of the in-vehicle audio system by additionally providing a music mixing function of the compact disc in the in-vehicle audio system.

Claims (6)

In the music mixing control method of a car audio system, A first step of scanning all the songs in the compact disc for each predetermined time by inserting the compact disc; A second step of extracting and storing BPM data by calculating and analyzing the speed of music for 1 minute for each song scanned in the first step; A third step of mixing the songs so that the songs can be seamlessly connected using the stored BPM data; A fourth step of determining whether the BPM of the song differs by 6 or more; And a fifth step of completing the mixing of all the songs and reproducing the compact disc if the BPM of the song does not differ by more than 6 as a result of the determination in the fourth step. How to control music mixing. The method of claim 1, As a result of the determination in the fourth step, if the BPM of the song and the difference is more than 6, the vehicle audio system further comprises the step of SKIP to the next song and returning to the third step and mixing How to control music mixing. The method of claim 1, wherein the first step is The music mixing control method of the audio system for a vehicle, characterized in that for scanning every 30 seconds for each song for each song in the compact disc in accordance with the insertion of a compact disc. The method of claim 1, wherein the second step is And calculating the BPM data of the corresponding song by extracting only the “pair” (high beat) bits of the drum beat “kung-chak” of the music for each of the songs scanned in the first step. The method of claim 1, wherein the third step is The mixing method of music is a music mixing control method of an in-vehicle audio system, characterized in that mixing is performed by matching the BPM data of the first part of the song played later and the first part of the song played later. An apparatus for controlling music mixing of an in-vehicle audio system, the apparatus comprising: a compact disc processing unit for playing a compact disc according to a predetermined control; A BPM data extracting unit which scans all the songs in the compact disc for each predetermined time according to a predetermined control and extracts BPM data including music fast information for 1 minute; A memory unit for storing BPM data for each song of the compact disc according to a predetermined control; The BPM data extracting unit controls the BPM data of each song of the compact disc to be extracted according to the insertion of the compact disc, and the memory unit controls the BPM data of each song of the compact disc to be stored. Control unit for controlling the mixing so that the connection can be seamlessly between the music mixing control device of a vehicle audio system comprising a.

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