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Voiceprint data transmission, identification method, identification device and storage medium

A transmission method and voiceprint technology, applied in speech analysis, instruments, etc., can solve the problems of string length overflow and long transmission time, and achieve the effect of stable voiceprint recognition.

Active Publication Date: 2021-05-14
ALLWINNER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the existence of RS encoding, the actual output string length may overflow to a certain extent, and the transmission will take longer

Method used

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  • Voiceprint data transmission, identification method, identification device and storage medium
  • Voiceprint data transmission, identification method, identification device and storage medium
  • Voiceprint data transmission, identification method, identification device and storage medium

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Embodiment Construction

[0047] refer to figure 1 , first execute step S1, receive the voiceprint data (PCM data), cut the PCM data, and divide it into N equal parts in the time domain into {PCM i}| 1≤i≤N , in this embodiment, the data is divided into three parts, that is, the voiceprint data is divided into a plurality of segmented time domain data in the time domain, and the first segmented time domain data PCM1, the second segmented time domain data PCM2 and the second segmented time domain data are obtained. Segmented time domain data PCM3.

[0048] Then step S2 is executed, and the W frequency domain range is also divided into N equal parts {W i}| 1≤i≤N , in this embodiment, the frequency domain range is divided into three parts, taking frequency response W=(0, 22Khz), N=3 as an example.

[0049] W is split into W 1 = (0Khz, 7.5Khz), W 2 =(7.5khz,15khz),W 3 =(15khz,22khz).

[0050] From figure 2 The frequency-semi-symbol index mapping table in i The frequency point information I i Con...

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Abstract

The present invention provides a voiceprint data transmission, identification method, identification device and storage medium. The transmission method includes: dividing the voiceprint data into a plurality of segmented time domain data in the time domain; extracting each segmented time domain data at the target frequency Segmented frequency domain data on the domain; each segmented frequency domain data is transmitted on different transmission frequency domains respectively. Since the frequency point information of the voiceprint data is mainly concentrated in the target frequency domain, only the data in the target frequency domain needs to be transmitted, and the data in the non-target frequency domain is not transmitted, and the frequency domain of the non-target frequency domain is used For the transmission of other segmented frequency domain data, the voiceprint data is first divided into multiple segmented time domain data in the time domain, and then each segmented time domain data is extracted into the segmented frequency domain data of the target frequency domain, and finally the Segmented frequency domain data is transmitted in different transmission frequency domains, and multiplexed in each frequency band, so that the character string is divided into multiple segments and output in parallel in the full frequency domain, so as to reduce the data transmission time.

Description

technical field [0001] The invention relates to the field of voiceprint recognition, in particular to a voiceprint data transmission method, a voiceprint data recognition method, a voiceprint data recognition device and a readable storage medium. Background technique [0002] The frequency range of sound that can be recognized by the human ear is approximately 20 Hz to 20000 Hz. The low frequency part is 20Hz to 200Hz, the mid frequency part is 500Hz to 2kHz, and the high frequency part is 2kHz to 20kHz. [0003] Noise refers to the continuous irregular sound caused by objects colliding, compressing, etc. spontaneously or interactively in real life. Noise occurs in every frequency band, which is roughly divided into low-frequency and high-frequency noise. Due to the wavelength, low-frequency noise has a long wavelength, which exists in a large number in reality, and has strong penetration. There will be a lot of irregular energy in the low frequency part. On the contrary,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L17/00G10L21/0224G10L21/0232G10L19/16
CPCG10L17/00G10L19/167G10L21/0224G10L21/0232
Inventor 程衎
Owner ALLWINNER TECH CO LTD