Keyword detection method and related device

Abstract

The invention discloses a keyword detection method. The method comprises the steps that a reinforcement voice signal of a to-be-detected voice signal is acquired, wherein the reinforcement voice signal corresponds to a target voice speed; the reinforcement voice signal is subjected to speed changing to obtain a first speed-changed voice signal, wherein the first speed-changed voice signal corresponds to a first voice speed; according to the first speed-changed voice signal, a first voice characteristic signal is acquired; through a keyword detection model, a keyword detection result corresponding to the first voice characteristic signal is acquired, wherein the keyword detection result is used for expressing whether or not a target keyword exists in the to-be-detected voice signal; if it is determined through the keyword detection result that the target keyword exists, an operation corresponding to the target keyword is executed. The invention further discloses a keyword detection device. According to the keyword detection method, the reinforced signal can be subjected to speed changing again, and the detection rate for the keyword in high-speed voice or low-speed voice can be increased.

Description

Technical field [0001] The present invention relates to the technical field of audio processing, in particular to a method for detecting keywords and related devices. Background technique [0002] With the promotion of smart voice devices, human-computer interaction with smart devices through voice commands has become an important function. In voice interaction applications, based on product power consumption, interactive experience, and privacy considerations, users need to use voice keywords to wake up smart devices to perform the next step of human-machine voice interaction. [0003] Currently, for smart voice devices, at least one keyword needs to be preset, and when the user wakes up the smart voice device, the corresponding keyword should be pronounced at a normal speaking rate. Normally, for a four-character keyword, it takes about 0.5 seconds to pronounce it at a normal speed. [0004] However, in many cases, it is difficult for users to ensure that the speech rate of the k...

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Problems solved by technology

[0004] However, in many cases, it is difficult for the user to ensure a constant speech rate for the keywords read out. For example, the user only takes 0.2 seconds to read a four-character keyword, or the user spends nearly 1.5 seconds to read a four-character keyword. In this case, it is often difficult for the smart voice device to detect whether the current voice contains keywords, resulting in a low detection rate of keywords

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