Vibration distortion-based voice frequency objective quality evaluating method and system

A technology of objective quality and evaluation method, applied in speech analysis, instruments, etc., can solve problems such as low bit rate, unstable mobile communication network, and low computational complexity

Inactive Publication Date: 2013-04-17
WUHAN UNIV
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AI Technical Summary

Problems solved by technology

In mobile communication, speech and audio codecs require the use of speech and audio coding algorithms with low computational complexity, low bit rate and high quality, while traditional speech and audio objective quality evaluation methods are not suitable for testing low bit rate speech and audio sequences
At the same time, the mobile communication network has interference factors such as instability, and...

Method used

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  • Vibration distortion-based voice frequency objective quality evaluating method and system
  • Vibration distortion-based voice frequency objective quality evaluating method and system
  • Vibration distortion-based voice frequency objective quality evaluating method and system

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Embodiment Construction

[0047] See figure 1 A voice and audio objective quality evaluation system based on jitter distortion provided in this embodiment includes a perception module 1 and a cognitive module 6. The perception module 1 includes a time-frequency analysis module 2, a tone color evaluation module 3, and a quality jitter module 4. And energy balance module 5.

[0048] Time-frequency analysis module 2, used to convert the original input signal and the time-domain signal of the test signal into a frequency-domain signal, and the obtained frequency-domain signal is divided into three channels and input to the tone color evaluation module 3, the quality jitter module 4 and the energy equalization Module 5.

[0049] The tone color evaluation module 3 is used to obtain the bottom acoustic characteristic parameters of the original signal and the test signal according to the input frequency domain signal, and obtain the distortion measurement value of the bottom acoustic characteristic parameter of th...

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Abstract

The invention discloses a vibration distortion-based voice frequency objective quality evaluating method and system. The system comprises a sensing model and a cognition module, wherein the sensing module further comprises a time frequency analyzing module, a tone sensing module, a quality vibration module and an energy balancing module; the output of the sensing module is model output parameters and is fitted through the cognition module so as to obtain user experience scores. The invention provides a method and a system for evaluating objective quality of voice frequency, which consider quality vibration influence, the method and the system are applicable to mobile voice frequency of middle-low code rate voice frequency, and the evaluation result is more approximate to real subjective hearing feeling.

Description

Technical field [0001] The invention relates to the field of objective evaluation of speech and audio quality, in particular to a method and system for evaluating objective quality of speech and audio based on jitter distortion. Background technique [0002] With the continuous development and widespread popularity of mobile communication devices, the application of mobile language audio has become more convenient and frequent. In mobile communications, speech and audio codecs require speech and audio coding algorithms with low computational complexity, low bit rate and high quality, while traditional speech and audio objective quality evaluation methods are not suitable for testing medium and low bit rate speech and audio sequences. . At the same time, the mobile communication network has instability and other interference factors. The traditional voice and audio objective quality evaluation method does not consider the influence of communication network parameters on the voice...

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Application Information

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IPC IPC(8): G10L25/60
Inventor 胡瑞敏杨玉红余洪江谢松波董少龙张聪高丽李登实涂卫平王晓晨
Owner WUHAN UNIV
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