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Voice record controlling method and voice recording device

A technology of a recording device and a control method, applied in the signal field, can solve the problems of low reliability of the sound control function, and achieve the effect of good judgment accuracy

Active Publication Date: 2012-09-05
NANJING ZGMICRO 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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  • Voice record controlling method and voice recording device
  • Voice record controlling method and voice recording device
  • Voice record controlling method and voice recording device

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Embodiment Construction

[0026] 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.

[0027] 1. Proximity mode

[0028] 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 voice record controlling method and a voice recording device which are used for improving the reliability of sound-control voice record. The voice record controlling method of the voice recording device includes a close-talking mode and a remote-talking mode. According to the close-talking mode, the sound intensity ratio among target sounds collected by at least two sound collection units is taken as a judgment evidence for voice record; and according to the remote-talking mode, the signal to noise ratio among the target sounds collected by the at least two sound collection units is taken as the judgment evidence for the voice record; and therefore, a voice record controlling technique has relatively great judgment accuracy.

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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Patent Type & Authority Applications(China)
IPC IPC(8): G11B19/02
Inventor 张晨冯宇红
Owner NANJING ZGMICRO CO LTD
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