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

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

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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 exist

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

[0047] 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 distance of the recording distance, which will be described in detail below with reference to the accompanying drawings.

[0048] 1. Proximity mode

[0049] The close-talk mode can also be called the dictation mode, that is, the recording distance is relatively close, and the sensitivity of the sound acquisition unit can be set to a lower level, such as recording during interviews or self-reports. 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 spheri...

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Abstract

The invention provides a record control method and a record device therefore, 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 target audio signal strengthcorresponding to the target audio data of each prior frame; when the ratio of two audio signal strengths is higher than a first judgment threshold value as a first setting, storing the target audio data of prior frame collected by each audio collection unit as a record data, while the first judgment threshold value is determined by the recording distance of the record device and the distances among the audio collection units; when the continuous time from the initial frame not satisfying the first 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] With the popularization of digital products, various recording devices are used more and more widely, such as recording pens or other digital products with recording functions, which are used by more and more people. In order to save storage space, recording equipment with voice-activated recording function came into being. The purpose is to control the recording by monitoring whether the target sound exists, start recording when there is a target sound, and pause the recording when there is no target sound, so as to avoid the 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 threshold, the recordi...

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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