Non-cooperative voice communication received data invalid period identification method

A voice receiving and recognition method technology, applied in the field of communication and information, can solve the problems of no research or product results found, zero-crossing rate detection is no longer effective, energy detection can not be used to distinguish voice and noise, etc., to achieve simple calculation and effective Benefits for real-time use

Inactive Publication Date: 2017-12-22
嘉兴开泽电子设备有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing methods for identifying noise and speech signals cannot be used in these cases
At this time, because the noise is not stable, the zero-crossing rate detection is no longer effective, and the noise and s

Method used

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  • Non-cooperative voice communication received data invalid period identification method
  • Non-cooperative voice communication received data invalid period identification method
  • Non-cooperative voice communication received data invalid period identification method

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Embodiment Construction

[0043] A method for identifying useless signal segments of non-cooperative radio voice reception data, comprising the following steps, such as figure 2 Shown:

[0044] Step 1 is to preprocess the data. Filter the data with a bandpass filter with a passband of 100Hz to 8KHz.

[0045] Step 2: Segment the preprocessed data into several non-overlapping data segments at intervals of 3 s, and the discrete value of the total length of the segment is N total .

[0046] Step three, signal amplitude mutation identification and continuous interval identification. For each segment of the signal in step 2, calculate the statistical distribution of the signal amplitude, and identify whether there is a sudden change in amplitude and mark the duration. Include the following sub-steps:

[0047] Calculation method of characteristic parameters of signal amplitude mutation.

[0048] (a) For each signal sample point in this section, set its discrete time number as n 0 , take its neighborho...

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Abstract

The present invention belongs to the communications and information technical field and relates to a method for processing received radio voice communication signals and information, in particular, a method for demodulating radio voice speech communication, and then performing data detection, segmentation and identification on the demodulated radio voice speech communication so as to identify periods of invalid signals such as noise and interference. According to the method, on the basis of the principles of statistical mathematics, statistical clustering analysis and fuzzy signal processing, a unified framework integrated processing method for identifying non-speech segments after receiving and demodulating non-cooperative radio voice communication, a detection method for finding sudden transient disturbance, a detection method for finding co-channel crosstalk disturbance from other radios, a speech signal and noise signal segment detection and identification method that does not depend on signal power strength and zero-crossing rate, a method for finding and identifying radio fault data, and a method for performing integrated identification on analog speech data and other digitally modulated data are provided.

Description

technical field [0001] The invention relates to a method for processing received radio voice communication signals and information, and belongs to the technical field of communication and information. In particular, it relates to a method for detecting, segmenting and identifying voice data after radio voice communication is demodulated, and identifying unnecessary signal time periods such as noise and interference. Background technique [0002] Transmission of voice is a main content of radio communication, and a lot of useful information can be obtained by listening to various radio voices. Non-cooperative voice signal reception means that the receiver is not the agreed information receiver, and does not know the parameters and format of the radio signal in advance. Before receiving, it must first identify and judge, and then demodulate and record data. Non-cooperative reception is often used For purposes such as radio signal monitoring or information collection. In the ...

Claims

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Application Information

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IPC IPC(8): G10L25/87G10L25/78G10L25/84G10L19/26
CPCG10L19/26G10L25/78G10L25/84G10L25/87G10L2025/783
Inventor 詹毅
Owner 嘉兴开泽电子设备有限公司
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