Keyword voice wakeup system and method and mobile terminal

Abstract

The invention relates to the technical field of voice signal processing, in particular to a keyboard voice wakeup system and method and a mobile terminal. The keyword voice wakeup system comprises an acquisition unit, a judgment unit and a wakeup unit, wherein the acquisition unit is used for forming an acquisition signal to be output; the judgment unit is connected with the acquisition unit; and the wakeup unit is connected with the judgment unit. A keyword wakeup command is preset and can be set automatically according to the preference of a user, and the mobile terminal can only be activated by a specific keyword and is in a standby mode in an inactivated state, so that the power consumption is relatively low; the activation accuracy of the mobile terminal is increased effectively; and the error operation rate is lowered greatly. Furthermore, a microphone can be taken as the acquisition unit. Furthermore, the microphone can be an MEMS (Micro Electro Mechanical System) microphone. The microphone is taken as the acquisition unit, and is simple in structure, easy to assemble and relatively low in cost at the same time.

Description

technical field [0001] The invention relates to the technical field of voice signal processing, in particular to a keyword voice wake-up system, a wake-up method and a mobile terminal. Background technique [0002] The words used in the process of human speech communication are usually formed by the combination of the vowel produced by the vibration of the vocal cords and the consonant formed by the airflow in the throat, tongue, lips, jaw and oral cavity. That is, the vowel produces energy, and the consonant only Most of the words with substantive meaning start with a consonant, and most of the words that start with a vowel are modal particles, such as "ah", "oh", "um", etc., all start with a vowel word. [0003] In the existing mobile terminals, the wake-up system mainly includes the manual wake-up system, that is, the mobile terminal is usually activated by starting the start button; this method, long-term use, is likely to cause the failure of the button, and at the sam...

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Problems solved by technology

[0003] In the existing mobile terminals, the wake-up system mainly includes the manual wake-up system, that is, the mobile terminal is usually activated by starting the start button; this method, long-term use, is likely to cause the failure of the button, and at the same time consumes a lot of power; the action wake-up system, that is, An acceleration sensor is installed in the mobile terminal. The acceleration sensor detects whether there is an acceleration (for example, there is an acceleration when the mobile terminal is moved flat). When the acceleration meets the predetermined conditions, the mobile terminal is activated. This method needs to be equipped with an acceleration Sensors, the cost is high, and the acceleration sensor consumes a lot of power; for example, the mobile terminal can be activated by waving the mobile terminal; the voice wake-up system, the voice wake-up system detects the activity of human voice, that is, as long as any vowel or consonant is detected, it can be activated The mobile terminal in the standby state adopts the voice wake-up system, which has low power consumption and low cost. However, this voice wake-up system can only be activated when it hears human voice information, and it is prone to misoperation. Anyone can activate the mobile terminal. Terminals, in the case of a large number of people, the mobile terminal is always in the working state, the power consumption is large, and the activation accuracy is low

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