Voice stream embedding information method and device, voice stream decoding information method and device

A technology for embedding information and voice streams, applied in speech analysis, instruments, etc., can solve the problems of small hidden information capacity, detected steganography accuracy, etc., achieves good objective evaluation and subjective evaluation effect, small embedded distortion, and steganographic capacity. high effect

Active Publication Date: 2020-12-25
HEFEI UNIV OF TECH
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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method and device for embedding information in a voice stream, and a method and device for decoding information in a voice stream, which solve the problem that the hidden information in the prior art has a small capacity and is easily detected by QIM steganalysis technology out and the defects of low steganographic precision

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  • Voice stream embedding information method and device, voice stream decoding information method and device
  • Voice stream embedding information method and device, voice stream decoding information method and device
  • Voice stream embedding information method and device, voice stream decoding information method and device

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[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0058] An embodiment of the present invention provides a method for embedding information in a voice stream, and the method in this embodiment is an improvement on an iLBC coding method. Specifically, as figure 1 As shown, the method of the present embodiment includes:

[0059] 110. Obtain the information to be embedded, and convert the informat...

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Abstract

The invention provides an audio stream information embedding method and device and an audio stream information decoding method and device. The target gain value is determined according to the voice frame, and then a second target index or a third target index is determined according to the target gain value and a second gain quantization table and bits to be embedded so as to realize embedding ofthe information. The technical scheme has relatively high steganography capacity and can resist general steganography analysis and detection, and the embedding distortion of the synthetic voice is lowand the effect of objective and subjective evaluation of the voice quality is good.

Description

technical field [0001] The invention relates to the field of speech processing, in particular to a method and device for embedding information in a speech stream, and a method and device for decoding information in a speech stream. Background technique [0002] Steganography in the iLBC low-bit-rate voice stream can hide the existence of communication transmission while hiding secret information. The safe transmission in the environment is of great significance to strengthen the information security protection. However, since the iLBC low-bit-rate speech has little redundancy after compression coding, there is little information that can be steganographically written into the iLBC low-bit-rate speech stream. It is easier to detect abnormalities in the voice stream, that is, it is easier to find hidden information hidden in the voice stream. Based on the above reasons, there are relatively few steganographic techniques for iLBC low-bit-rate speech streams. [0003] At pres...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/018G10L19/038
CPCG10L19/018G10L19/038
Inventor 苏兆品李望望张国富岳峰周仙仙
Owner HEFEI UNIV OF TECH
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