Method and device for detecting voice encryption error

A detection method and detection device technology, applied in speech analysis, electrical components, wireless communication, etc., can solve problems such as loss of function, achieve the effect of improving the method system and expanding the scope of application

Active Publication Date: 2017-01-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the detection of the sound of running water mainly relies on the detection of some parameters of the speech frame, and when most of the speech data are silent frames, this detection method will lose its effect

Method used

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  • Method and device for detecting voice encryption error
  • Method and device for detecting voice encryption error
  • Method and device for detecting voice encryption error

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] For the specific implementation of step S1:

[0051] The voice frame data received by the radio network controller RNC can judge the coding rate of the voice frame through its corresponding TFCI (Transport Format Combination Indicator) and the initial parameters of the voice service establishment, and then can determine the voice frame correspondingly. Encoding rate number.

[0052] The value of the measured parameter of the silent frame can be obtained by obtaining the coded data of the silent frame from the voice data stream. The coded data of the mute frame includes multiple fields, such as MI (Mode Indication) field, MR (Mode Request) field, FT (Frame Type) field and so on. Each field corresponds to a 3-bit or 4-bit bitcode, and different bitcodes correspond to different field values. Therefore, the above field can be used as the measured parameter of the silence frame, and the MI field is specifically used as the measured parameter of the silence frame below.

...

Embodiment 2

[0067] For the specific implementation of step S1:

[0068] The voice frame data received by the radio network controller RNC can judge the coding rate of the voice frame through its corresponding TFCI (Transport Format Combination Indicator) and the initial parameters of the voice service establishment, and then can determine the voice frame correspondingly. Encoding rate number.

[0069] The value of the measured parameter of the silent frame can be obtained by obtaining the coded data of the silent frame from the voice data stream. The coded data of the mute frame includes multiple fields, such as MI (Mode Indication) field, MR (Mode Request) field, FT (Frame Type) field and so on. Each field corresponds to a 3-bit or 4-bit bitcode, and different bitcodes correspond to different field values. Therefore, the above field can be used as the measured parameter of the silence frame, and the MI field is specifically used as the measured parameter of the silence frame below.

...

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Abstract

The invention discloses a method for detecting an voice encryption error The method of the invention comprises steps of determining whether a value of a detected parameter of a silent frame is legal according to the value of the detected parameter of the silent frame in a voice data stream and a coding rate of a previous voice frame adjacent to the silent frame, determining whether an accumulation number of the values of the detected parameters of the silent frame which are illegal exceeds a set threshold through setting a threshold in a detection window, and if yes, determining that the voice encryption has an error. The invention also discloses a device for detecting the voice encryption error. The method and device of the invention realize detection on sound of running water which is caused by wrong voice encryption through determining the voice encryption error, compensates the defects that some parameter detection method depending on the voice frame cannot fully detect the running water sound under a condition that the silent frames take a major part in the voice data, complete a method system of the running water detection, and further expand an application range for running water sound detection.

Description

technical field [0001] The invention relates to the field of voice communication, in particular to a method and device for detecting voice encryption errors. Background technique [0002] The voice service coding of the Universal Mobile Telecommunications System (UMTS for short) adopts the Adaptive Multi-rate (AMR for short) technology compatible with the Global System for Mobile Communications (GSM for short). The security mechanism of the UMTS system inherits the security mechanism of GSM, which is mainly reflected in the encryption. In UMTS, the encryption function is activated by the core network, and the encryption parameters are sent to the radio network controller (Radio Network Controller, referred to as RNC) and user equipment (User Equipment, referred to as UE), and the RNC and UE jointly complete the encryption between each other. process. [0003] If the encrypted voice data is decrypted with wrong parameters, the recovered voice data will be the sound of runni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/78H04W24/00
CPCG10L19/012H04W24/00
Inventor 孔小玲霍燚
Owner ZTE CORP
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