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Sound recording control method and sound recording device

A technology of recording equipment and a control method, which is applied in the field of signals, can solve problems such as low reliability of sound control functions, and achieve the effects of improving recording accuracy and good judgment accuracy

Active Publication Date: 2009-06-17
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors of the present application found that the characteristics of the target sound are different according to the distance of the recording distance, but the existing technology does not provide a corresponding voice control mechanism for target sounds at different distances, resulting in low reliability of the sound control function

Method used

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  • Sound recording control method and sound recording device
  • Sound recording control method and sound recording device
  • Sound recording control method and sound recording device

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Embodiment Construction

[0031] The embodiment of the present invention fully considers the influence of the recording distance on the target sound characteristics, and proposes two different recording control technologies according to the recording distance, which will be described in detail below with reference to the accompanying drawings.

[0032] 1. Proximity mode

[0033] The proximity mode can also be called the dictation mode, that is, the recording distance is relatively short, and the sensitivity of the sound collection unit can be set to be low, such as recording during an interview or a self-report. At this time, when the sound wave reaches the sound collection unit of the recording device, it is a spherical wave, and the sound wave intensity of the spherical wave is inversely proportional to the square of the distance. Generally, the recording device has two or more sound collection units. If the intensity ratio of the sound collected by the unit satisfies the characteristics of the spher...

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Abstract

The invention relates to a signal technique, in particular to a record control technique. The invention discloses a record control method and a record device, for improving the reliability of sound control recording. The record device is provided with at least two audio collection units. The record control method for the record device comprises: obtaining target audio data of prior frame collected by each audio collection unit, and determining the average signal noise ratio of prior frame signals according to the target audio signal of each prior frame; when the average signal noise ratio is higher than a second judgment threshold value of a second setting, storing the target audio data of prior frame collected by each audio collection unit as a record data, while the second judgment threshold value is higher than 1; when the continuous time from the initial frame not satisfying the second setting to prior frame reaches a default time length, stopping storing the target audio data of prior frame collected by each audio collection unit as record data.

Description

technical field [0001] The invention relates to signal technology, in particular to a recording control technology. Background technique [0002] Along with the popularization of digital products, the application of various recording devices is more and more extensive, such as recording pens or other digital products with recording functions, etc., are more and more used by people. In order to save storage space, a recording device with voice-activated recording function came into being. The purpose is to control the recording by monitoring the existence of the target sound, start recording when the target sound exists, and pause the recording when there is no target sound, so as to avoid storage space. In addition, it can make the recording data more compact and save playback time. [0003] The existing solution for voice-activated recording is to set a fixed threshold, and then detect the energy of the collected signal frame by frame. If the energy is greater than the thr...

Claims

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Application Information

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IPC IPC(8): G11B19/02G11B20/10
Inventor 张晨冯宇红
Owner WUXI ZGMICRO ELECTRONICS CO LTD
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