Method for penetrating vocoder

A vocoder and carrier frequency technology, applied in the field of voice communication, can solve problems such as VAD detection or noise detection, and achieve the effect of improving the information transmission rate

Inactive Publication Date: 2019-02-15
蒋全珍
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the technical problem in the prior art that the digital signal cannot pass the VAD detection or noise detection of the vocoder after being simulated

Method used

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  • Method for penetrating vocoder

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Embodiment 1

[0034] This embodiment provides a method for penetrating the vocoder, such as Figure 13 , the method includes:

[0035] Step 1, the input voice data is sampled, and the sampled digital voice data is compressed;

[0036] Step 1, selecting the characteristic frequency of the speech signal as the carrier frequency;

[0037] Step 2, performing carrier modulation on the digital signal to obtain a modulated signal;

[0038] Step 3: Perform D / A conversion on the modulated signal and send it to the vocoder.

[0039] Specifically, the carrier frequency selected in Step 1 includes a base frequency and a multiple frequency, wherein the base frequency is 50 Hz-500 Hz, and the multiple frequency is an integer multiple of the base frequency.

[0040] Specifically, the multiplier range is 300Hz-3400Hz.

[0041] Specifically, the carrier modulation includes phase modulation and amplitude modulation.

[0042] Specifically, the phase modulation includes PSK modulation, QPSK modulation, DP...

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Abstract

The invention relates to a method for penetrating a vocoder and solves a technical problem that a signal can not penetrates through a vocoder in the prior art. The method comprises steps that S1, thecharacteristic frequency of a speech signal is selected as the carrier frequency; S2, carrier modulation of a digital signal is performed to obtain a modulated signal; and S3, the modulated signal issubjected to D/A conversion and then sent to the vocoder. The method is advantaged in that the various signal vocoder penetration problems are better solved, and the method is applicable to the speechcommunication technology.

Description

technical field [0001] The invention relates to the technical field of voice communication, in particular to a method for penetrating a vocoder. Background technique [0002] Vocoder (vocoder) Speech analysis and synthesis system of a certain model of speech signal. A speech signal codec that only uses model parameters in transmission, and uses model parameter estimation and speech synthesis technology in encoding and decoding, a coder and decoder that analyzes and synthesizes speech, also known as speech analysis and synthesis system or speech Band compression system. It is a powerful tool for compressing the communication frequency band and conducting secure communication. [0003] Due to the existence of VAD detection and noise detection, the general digital signal cannot pass the VAD detection or noise detection of the vocoder after being simulated. Accordingly, the present invention provides a method capable of passing through a penetrating vocoder. Contents of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00G10L19/16G10L25/18
CPCG10L19/16G10L25/18G10L19/00
Inventor 王秉玉王睿崔爱东
Owner 蒋全珍
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