Test method, device and test equipment for echo cancellation

A technology of echo cancellation and testing method, which is applied in speech analysis, speech recognition, instruments, etc., can solve the problems of low flexibility, achieve high flexibility, improve accuracy, and improve test results
CN107910014BActive Publication Date: 2021-11-09SUZHOU KEDA TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU KEDA TECH
Publication Date
2021-11-09

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Abstract

The invention discloses a test method, device and test equipment for echo cancellation, wherein the method includes: acquiring an audio signal to be tested; performing voice recognition on the audio signal to be tested to acquire voice information in the audio signal to be tested; extracting the voice The characteristics of the information; compare the characteristics of the voice information with the voice features of the reference audio signal; determine the voice score of the audio signal to be tested according to the comparison result; use the voice score to calculate the echo cancellation quality score of the device under test. This method evaluates the quality of echo cancellation based on the characteristics of the voice information in the audio to be tested, which can avoid the influence of different contexts on the audio signal to be tested in multiple scenarios, and has high flexibility. Environmental interference is irrelevant, and only depends on the performance of the equipment under test itself, which can improve the test effect of echo cancellation, and the reliability makes the objective evaluation result more in line with human subjective evaluation.
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Description

technical field

[0001] The invention relates to the technical field of echo processing, in particular to a test method, device and test equipment for echo cancellation. Background technique

[0002] Acoustic echo refers to the sound played by the speaker of the far-end device (or near-end device), which is picked up by the microphone of the far-end device (or near-end device), and then transmitted to the near-end device (or far-end device). The sound played from the speaker of the device (or remote device). Whether the echo can be heard by the near-end user depends on two factors: one is the energy of the echo, and the other is the delay from when the near-end speaks to when the near-end plays the far-end voice. Generally, when the delay from speaking at the near end to hearing the echo reaches more than 30 milliseconds and the echo has a certain amount of energy, you will feel the existence of the echo, which will affect the call effect in severe cases.

[0003] In the pr...

Claims

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