Multiple source sound recording module and using method thereof

A technology of audio source and recording port, which is applied in the field of multi-audio recording module, which can solve the problems of increasing product cost and the inability to realize multi-channel audio mixing at the same time, and achieve the effect of saving switch cost and omitting switch components

Active Publication Date: 2011-10-05
WINGTECH COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a design must set a proprietary control switch device to switch the audio source, which increases the product cost and cannot realize the function of simultaneous mixing and recording of multiple audio sources

Method used

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  • Multiple source sound recording module and using method thereof
  • Multiple source sound recording module and using method thereof
  • Multiple source sound recording module and using method thereof

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0021] image 3 Shown is a specific embodiment of this method applied to the recording of two audio sources. The microphone used in this implementation case is connected to the recording port in a double-ended input mode.

[0022] In this embodiment, there are 2 audio sources, and the corresponding audio source devices are two microphones, that is, MIC 1 and MIC 2 , the microphone with the model number 3000-C40150LB40R-108 is selected, the resistance value is 2.2k ohms, the recording device RECODER uses the AK3224 chip, and two audio source control ports are required according to the number of audio sources, because the chip only has one bias voltage output port , here choose one control port to simulate the bias voltage output as another audio source control port, and the two bias voltages are respectively defined as MicBias1 and MicBias2. ...

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Abstract

The invention relates to a multi-sound source recording module and an application method thereof. The recording module utilizes the original output port of a recorder to form sound source control port(s) with the number one-to-one corresponding to that of sound source device(s), and realizes control of operations of different microphones by using different sound source control ports to output bios voltage MicBias through the isolation effect of capacitors, so as to dispense with a special switch component and save switch cost on the premise of ensuring the recording effect. The recording module can also realize the multipath sound mixed recording function which can not be realized in the original design.

Description

technical field [0001] The invention relates to a multi-sound source recording module and a using method thereof. Background technique [0002] For some chips with recording function, most of them have only one recording input port due to pin restrictions or other reasons. Usually, the design of the two-way audio recording module is as follows: figure 1 As shown, the sound source of the recording device RECODER comes from one of MIC1 and MIC2. When the recording starts, the RECODER selects one of the audio sources through the control signal control switch, and turns on the bias voltage MicBias of the MIC, so that the audio receiver mic of this channel starts to work. The audio signal received by the mic is sent to one end of the capacitors C1 and C2, and the DC signal is filtered out after the value of the capacitor is separated, and the audio signal is directly entered into the recording pin of the RECODER for recording. In such a design, a proprietary control switch devi...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G11C7/16G11B20/00
Inventor马琼英
OwnerWINGTECH COMM