Patent Document ID: 9799335
Application ID: 15122392

Base Claim:
1. A method for speech recognition implemented by a speech recognition device comprising: receiving a first speech signal issued by multiple users; performing analog to digital conversion on the first speech signal to generate a first digital signal after the analog to digital conversion; extracting a first speech parameter from the first digital signal, the first speech parameter describing a speech feature of the first speech signal; if the first speech parameter coincides with a first prestored speech parameter in a sample library, executing control signaling instructed by the first digital signal, the sample library prestoring prestored speech parameters of N users, N≧1; wherein extracting the first speech parameter from the first digital signal comprises: performing signal filtering on the first digital signal so as to obtain at least a first sub signal corresponding to a first user and a second sub signal corresponding to a second user from the filtered first digital signal; extracting, from the first sub signal, a second speech parameter that describes a speech feature of the first sub signal, and extracting, from the second sub signal, a third speech parameter that describes a speech feature of the second sub signal; wherein the first speech parameter comprises the second speech parameter and the third speech parameter.

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Claim 6:
6. The method according to claim 1 , wherein a speech parameter comprises at least one of fundamental frequency information, sound pressure information and spectrum information of a speech signal.