KR19980030839U - Audio mixer luther - Google Patents

Abstract

The audio mixer router according to the present invention is provided at an input of a mixer of a computer audio card, and is provided at one side of the main processor for multiplexing and receiving a voice signal from an external sound source, and is provided from the external sound source. And an input unit for receiving a voice signal, and an output unit provided at the other side of the main processor and outputting a voice signal processed by the main processor to the mixer.

According to the audio mixer router of the present invention, since the input signal from the sound source is multiplexed by the main processor and input to the audio codec of the mixer, the audio signal from the sound source can be independently controlled.

Description

Audio mixer luther

The present invention relates to an audio mixer employed in an audio card for a computer, and more particularly, to independently perform input / output and mute control of an audio signal according to a video signal input from a VCR or a TV. It's about an audio mixer router.

In general, an audio mixer used for an audio card for a computer is a device for outputting a combination of various audio signals input from various sound sources into a single signal.

1 is a schematic configuration diagram of a conventional audio mixer.

Referring to FIG. 1, a conventional audio mixer 11 receives audio signals from a microphone 12, a CD 13, a MIDI / FM 14, and an input line 15, and combines them into one signal. After output through the output line 16 or the speaker 17. However, such a conventional audio mixer 11 does not have a channel for receiving audio signals such as VCR 18, TV 19, LDP, etc., which are input through an overlay B / D in a multimedia environment. There is a problem that can not independently control the voice signal according to. In FIG. 1, reference numeral 20 denotes a power amplifier.

The present invention has been made in view of the above problems, and an object thereof is to provide an audio mixer router capable of independently performing input / output and mute control of an audio signal according to an image signal.

1 is a schematic configuration diagram of a conventional audio mixer.

2 is a schematic configuration diagram of an audio mixer router according to the present invention.

Figure 3 is a state of use of the audio mixer router according to the present invention.

Figure 4 is a flow chart showing the processing in the main processor of the audio mixer router according to the present invention.

Explanation of symbols for the main parts of the drawings

11,11 '... Codec / Mixer 12,12' ... Microphone (Input Line)

13,13 '... CD (input line) 14,14' ... MIDI / FM (input line)

15,15 '... Input line 16,16' ... Output line

17,17 '... Speaker 18,18' ... VCR

19,19 '... TV20,20' ... power amplifier

21a ... main processing unit 21b ... input unit

21c ... output 31 ... modem

In order to achieve the above object, an audio mixer router according to the present invention is installed at an input of a mixer of a computer audio card, and receives a voice signal from an external sound source and performs multiplexing processing, and the main processor. And an input unit provided at one side of the input unit for receiving a voice signal from the external sound source, and an output unit provided at the other side of the main processor and outputting the voice signal processed by the main processor to the mixer. There is a characteristic.

According to the audio mixer router of the present invention, since the input signal from the sound source is multiplexed by the main processor and input to the audio codec (CODEC: abbreviation of coder-decoder) on the mixer side, the audio signal from the sound source is independently controlled. There is an advantage to this.

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

2 is a schematic configuration diagram of an audio mixer router according to the present invention, and FIG. 3 is a state diagram of the audio mixer router according to the present invention.

2 and 3, the audio mixer router 21 according to the present invention is installed at an input of a mixer 11 'of an audio card for a computer, and an external sound source such as a VCR 18', a TV 19 '), A main processor 21a for receiving a multiplexed voice signal from the MODEM 31, and an input unit 21b provided at one side of the main processor 21a for receiving a voice signal from the external sound source. And an output section 21c provided on the other side of the main processor 21a and outputting the audio signal processed by the main processor 21a to the mixer 11 '.

Here, the main processor 21a is used as a multiplexer for transmitting messages of multiple channels to a single transmission medium, and the input unit 21b selects inputs and mutes of audio outputs such as TV, VCR, and MODEM. A plurality of input terminals 1L1R to 5L5R are provided for the purpose. The output unit 21c is provided with two output terminals OUTL and OUTR for signal transmission to the audio codec on the mixer side.

Then, the operation of the audio mixer router of the present invention having the above configuration will be described with reference to FIGS. 2, 3, and 4.

4 is a flow chart showing a processing procedure in the main processor of the audio mixer router according to the present invention.

First, when a voice signal is input from an external device, the main processor 21a selects a sound source (step 41). For example, if the sound source of the audio signal is three, such as VCR 18 ', TV 19', MODEM 31, the sound source can be selected using two data bits as shown in Table 1 below.

TABLE 1

Sound source selection table according to the data bits

Sound source selection / function Bit 1 (d1) Bit 0 (d0) TV audio output 0 0 VCR audio output 0 One MODEM voice output One 0 MUTE One One

That is, the input of each bit can also be used as a data bit of a programmable chip in a B / D configuration, and can also output latched data by making an I / O port using programmable array logic (PAL). At this time, mute is grounded to eliminate the output. This corresponds to the sound off function.

On the other hand, if the sound source is selected in this way, it is determined whether or not the TV audio output (step 42). In this step 42, if it is a TV audio output, it inputs the '0 0' data of the router (step 43) and is connected to the output of the router (50), thus inputting the mixer (step 51). If it is not the TV audio output in step 42, it is determined whether it is the audio output of the VCR (step 44). If the voice output of the VCR is inputted in this step 44, '0 1' data of the router is inputted (45). If it is not the voice output of the VCR in step 44, it is determined whether it is the voice output of the modem (step 46). In this case, if the voice output of the modem is inputted in step 46, the data of '1 0' of the router is input (47), and the subsequent process is the same as the program proceeding after the step 43. In step 46, it is determined whether mute is selected if not the voice output of the modem (step 48). If mute is selected in step 48, '1 1' data of the luther is input (49), and the subsequent process is the same as the program progress after step 43. If the mute is not selected in step 48, the process returns to step 42.

As described above, in the audio mixer router according to the present invention, since the input signal from the sound source is multiplexed by the main processor and input to the audio codec of the mixer, it is possible to independently control the audio signal and the mute from the sound source. have. In the present specification, the audio mixer router of the present invention is installed as an example between the line in and the audio mixer / codec. However, the present invention may be similarly applied to MIDI in, CD in line, and the like.

Claims (3)

A main processor installed at an input of a mixer of a computer audio card and receiving a voice signal from an external sound source, and being provided at one side of the main processor and receiving a voice signal from the external sound source And an output unit provided at the other side of the main processor and outputting a voice signal processed by the main processor to the mixer. The audio mixer router according to claim 1, wherein the main processor comprises a multiplexer. The audio mixer router according to claim 1, wherein the input unit is provided with a plurality of input terminals to receive various voice signals from an external sound source.