KR20020090264A - Apparatus for mixing audio signals - Google Patents

Abstract

PURPOSE: An audio signal mixing system is provided to mix an audio signal from a reproducing medium with an audio signal from a microphone using a digital mixer and record the mixed signal in a recordable medium. CONSTITUTION: An audio signal mixing system includes the first and second signal detectors, a signal processor, and a data recording processor. The first signal detector receives a signal from a digital signal source. The second signal detector converts a signal received from an analog signal source into a digital signal. The signal processor mixes the digital signals output from the first and second signal detectors. The data recording processor is integrated with the digital signal source but operates independently in response to the mixed signal output from the signal processor.

Description

Apparatus for mixing audio signals

The present invention relates to an audio signal mixing apparatus for mixing an audio signal from a reproducible medium and an audio signal from a microphone and recording the same on a recordable medium.

First, FIG. 1 shows a configuration of a general double disk device, in which the first disk device 1 for reproducing or recording a recordable medium such as a CR-RW or the like, and a CD. A second disc device 2 for reproducing a reproducing medium such as a ROM or the like is integrally formed so that audio data read and reproduced from a reproducing medium such as the CD-ROM can be recorded. You will be able to copy and write to.

On the other hand, the first disk device (1) includes: an optical pickup (11) for reading or recording data recorded on the optical disk (10); A recording / reproducing signal processor (12) for processing the read data by reproducing the signal or converting the input signal into a signal suitable for recording; A control unit 13 for controlling the operation of the constituent means; A digital / analog (D / A) converter (15) for converting and outputting audio data processed by the recording / reproducing signal processor or signal converter into an analog audio signal (A_OUT1); An analog mixer 19 for mixing an analog audio signal MIC_IN input from a microphone and an analog audio signal A_OUT2 output from the second disk device 2; A switch 18 for selecting one of an analog audio signal A_IN input from the outside in response to the switching signal SW1 and a signal output from the analog mixer 19; An analog / digital (hereinafter, A / D) converter 17 for converting an analog audio signal input through the switch 18 into a digital audio signal; And a switch 16 for selecting one of the digital audio signal output from the A / D converter 17 and the digital audio signal reproduced and output from the second disk device 2 in response to the switching signal SW0. ) May be configured to include.

The second disk apparatus 2 includes an optical pickup 21 for reading data recorded on the optical disk 20; A reproduction signal processing unit (22) for processing a reproduction signal of the read data; A control unit (23) for controlling operation of the configuration means according to a user key input requested through a key input unit (24); And a D / A converter 25 for converting and outputting audio data processed by the reproduction signal processing unit into an analog audio signal A_OUT2, wherein the control unit of the first disk apparatus 1 includes: 13) and the control unit 23 of the second disk device are linked to each other to simultaneously perform a playback and recording operation at the request of the user, or to each optical disk inserted and seated in the first and second disk devices. Control playback independently.

Therefore, a user having a double disk device configured as described above may have an optical disk 10 such as a CD-RW or the like in the first disk device 1 and the second disk device 2, such as a CD-ROM or the like. After each of the optical disks 20 is inserted and seated, the first disk device 1 is set to a recording mode, and the second disk device 2 is set to a playback mode, such that the optical disk such as the CD-ROM or the like. Audio data recorded at 20 can be copied and recorded on the optical disc 10 such as the CD-RW or the like. At this time, the controller 13 outputs a switching signal SW0 such that the node a1 of the switch 16 is connected to the node a3.

In addition, the first disk device 1 is set to the recording mode, the second disk device 2 is set to the playback mode, respectively, and a microphone is connected to the optical disk 20 such as the CD-ROM. The audio data and the analog audio signal input from the microphone can be mixed and recorded on the optical disc 10 such as the CD-RW. In this case, the controller 13 outputs a switching signal SW0 such that the node a1 of the switch 16 is connected to the node a2, and the node b1 of the switch 18 is connected to the node b3. The switching signal SW1 is output to be connected.

In the general double disk device as described above, the digital audio data recorded on the optical disk 20 such as a CD-ROM is converted into an analog signal in the D / A converter 25 and input from the microphone in the analog mixer 19. After mixing with the audio signal MIC_IN, the A / D converter 17 converts the digital audio data back. As such, the sound quality is degraded in the process of converting the digital audio data recorded on the optical disk 20 such as a CD-ROM into an analog audio signal. Moreover, the analog mixer 19 has a problem of increasing the production cost because the circuit is more complicated than the digital mixer.

Accordingly, the present invention has been proposed to solve the above-described problems, and an audio signal mixing apparatus for mixing audio signals from a reproducible medium and audio signals from a microphone using a digital mixer and then recording them on a recordable medium. The purpose is to provide.

1 shows a configuration of a general double disk apparatus; And

2 is a diagram showing the configuration of a double disk device according to a preferred embodiment of the present invention.

※ Explanation of code for main part of drawing

100: first disk device 110, 210: optical disk

111, 211, optical 112: recording and reproducing signal processor

113, 213: control unit 214; Key input section

115, 215: D / A converter 116, 119: switch

117: A / D converter 118: digital mixer

200: second disk device 212: playback signal processor

An audio signal mixing apparatus of the present invention for achieving the above object includes a first signal detector for receiving a signal input from a digital signal source; A second signal detector for converting a signal input from an analog signal source into digital; A signal processor for data mixing the digital signals output from the first and second signal detectors; And a data recording processing unit integrated with the digital signal source but operating independently to operate in response to the mixed output of the signal processing unit.

Hereinafter, a program download system and a download method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram showing the configuration of a double disk device according to a preferred embodiment of the present invention. Referring to FIG. 2, the double disc apparatus includes, for example, a first disc apparatus 100 for reproducing or recording a recordable medium 110 such as a CR-RW, and a read-only medium such as a CD-ROM or the like. A second disc device 200 for reproducing 200 is integrally configured to copy and record audio data read and reproduced from a read-only medium such as the CD-ROM onto a recordable medium such as the CD-RW. Will be.

The first disk apparatus 100 may include an optical pickup 111 for reading or recording data recorded on the optical disk 110; A recording / reproducing signal processing unit 112 for processing the read-out data by reproducing the signal or converting the input signal into a signal suitable for recording; A control unit 113 for overall control of the first disk device 100; A D / A converter (115) for converting and outputting audio data processed by the recording / reproducing signal processor or signal converter into an analog audio signal (A_OUT1); A switch 119 for selecting and outputting one of an analog input signal A_IN and an analog audio signal MIC_IN input from a microphone in response to the switching signal SW3; An A / D converter 117 for converting an analog audio signal output from the switch 119 into digital audio data; A digital mixer (118) for mixing the digital audio data output from the A / D converter (117) and the digital audio data output from the reproduction signal processing unit (212) of the second disk device (20); In response to the switching signal SW2, one of the digital audio data output from the A / D converter 117, the mixer 118, and the reproduction signal processor 212 of the second disk device 200 is selected. A switch 116 may be included.

The second disk apparatus 2 includes: an optical pickup 211 for reading data recorded on the optical disk 20; A reproduction signal processing unit 212 for processing a reproduction signal of the read data; A control unit 213 for controlling operation of the configuration means according to a user key input requested through a key input unit 214; And a D / A converter 215 for converting and outputting audio data processed by the reproduction signal processing unit into an analog audio signal A_OUT2, wherein the control unit of the first disk apparatus 1 includes: 113 and the control unit 213 of the second disk device are linked to each other to simultaneously perform a playback and recording operation in response to a user's request, or to insert them into the first and second disk devices 100 and 200. Each of the seated optical disks 110 and 210 is independently reproduced and controlled.

Subsequently, the analog audio signal input from the outside in the double disk device configured as described above, the digital audio data recorded on the optical disk 210 such as a CD-ROM inserted into the second disk device 200, And a method of synthesizing the digital audio data recorded on the optical disk 210 and the analog audio signal inputted from the microphone and recording them on the optical disk 110 such as a CD-RW mounted on the first disk apparatus 100. Each is explained.

First, a method for recording an analog audio signal input from the outside to an optical disc 110 such as a CD-RW mounted on the first disc device 100 is as follows. A user inserts and seats an optical disk 110 such as a CD-RW in the first disk device 100 and sets the first disk device 100 to a recording mode. The control unit 113 outputs the switching signal SW3 so that the node d1 of the switch 119 is connected to the node d2 which is an external analog audio signal A_IN input terminal, and the node c1 of the switch 116. Outputs a switching signal SW2 such that is connected to the output terminal c2 of the A / D converter 117. Therefore, the analog audio signal A_IN input from the outside is converted into digital audio data by the A / D converter 117 via the switch 119, and the digital audio data is recorded and reproduced through the switch 116. 112 is recorded to the optical disc 210.

An optical disk 110 such as a CD-RW or the like, which is inserted into the first disk device 100, and digital audio data recorded on the optical disk 210, such as a CD-ROM inserted and seated in the second disk device 200. ) Is as follows. The user inserts and seats the optical disk 110 such as a CD-RW or the like, and the optical disk 210 such as a CD-ROM to the first disk device 100 and the second disk device 200, respectively. One disk device 100 is set to a recording mode, and the second disk device 200 is set to a playback mode. The controller 113 outputs a switching signal SW3 such that the node d1 of the switch 119 is not connected to any of the nodes d2 and d3, and the node C1 of the switch 116 is connected to the node C4. The switching signal SW2 is outputted so as to be connected to the control unit. Therefore, the digital audio data recorded on the optical disc 210 such as the CD-ROM can be copied and recorded on the optical disc 110 such as the CD-RW.

The digital audio data recorded on the optical disk 210 such as a CD-ROM inserted into the second disk device 200 and the analog audio signal input from the microphone are synthesized and inserted into the first disk device 100. The recording method on the optical disc 110 such as a CD-RW is as follows. The user inserts and seats the optical disk 110 such as a CD-RW or the like, and the optical disk 210 such as a CD-ROM to the first disk device 100 and the second disk device 200, respectively. The disk device 1 is set in the recording mode, the second disk device 2 is set in the playback mode, and a microphone is connected to the second disk device 200. The controller 113 outputs a switching signal SW3 such that the node d1 of the switch 119 is connected to the node d3, which is a microphone input terminal, and the node C1 of the switch 116 is connected to the mixer 118. The switching signal SW2 is output to be connected to the node C3 which is an output terminal of the. Therefore, the analog audio signal MIC_IN input from the microphone is converted into digital audio data by the A / D converter 117 through the switch 119, and the digital audio output from the reproduction signal processor 212 by the mixer 118. It is mixed with the data. The digital audio data mixed in the mixer 118 is transferred to the recording / playback signal processing unit 112 through the switch 116 to be recorded on the optical disc 10 such as the CD-RW.

As mentioned above, preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art can improve and change various other embodiments within the technical spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The audio signal mixing apparatus according to the present invention constructed and constructed as described above mixes analog audio signals input from a microphone with digital audio data stored in a reproduction-only medium such as a CD-ROM, and stores them in a recordable medium such as a CD-RW. If desired, the analog audio signal input from the microphone is converted into digital audio data, and mixed with digital audio data stored in a reproduction-only medium such as a CD-ROM reproduced by a reproduction signal processing unit using a digital mixer. Therefore, digital audio data recorded on an optical disc such as a CD-ROM or the like can be converted into an analog audio signal and prevented from degrading sound quality while being analog mixed. Moreover, the audio signal mixing device of the present invention is a very useful invention that can reduce the production cost by using a digital mixer instead of an analog mixer.

Claims (1)

A first signal detector which receives a signal input from a digital signal source; A second signal detector for converting a signal input from an analog signal source into digital; A signal processor for data mixing the digital signals output from the first and second signal detectors; And And a data recording processing unit integrated with the digital signal source, the data recording processing unit operating in response to the mixed output of the signal processing unit.