	US 12,219,481 B2
	Method and apparatus for waking up smart device, smart device and medium
Runyu Shi, Beijing (CN); Lin Zhang, Beijing (CN); Yuqing Hua, Beijing (CN); Song Mei, Beijing (CN); Wei Lu, Beijing (CN); Naichao Guo, Beijing (CN); and Kai Wang, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Mar. 17, 2021, as Appl. No. 17/203,849.
Claims priority of application No. 202010589348.4 (CN), filed on Jun. 24, 2020.
Prior Publication US 2021/0410065 A1, Dec. 30, 2021
Int. Cl. H04B 11/00 (2006.01); H04W 52/02 (2009.01)

CPC H04W 52/0229 (2013.01) [H04B 11/00 (2013.01)]

8 Claims

1. A method for waking up a smart device, applicable to a receiving end smart device, the method comprising:

receiving sound information;

determining whether the sound information includes a multi-frequency tone, comprising: determining whether the sound information includes feature audio information based on first preset information; and determining that the sound information includes the multi-frequency tone when the sound information includes the feature audio information, wherein the feature audio information includes a plurality of single-frequency tones, the first preset information includes a plurality of reference single-frequency tone features, and the plurality of single-frequency tones correspond to the plurality of reference single-frequency tone features;

determining whether the sound information includes feature base frequency information based on second preset information, wherein the second preset information includes a reference base frequency feature, and the feature base frequency information corresponds to the reference base frequency feature; and

waking up a preset function of the smart device based on the multi-frequency tone when the sound information includes the feature base frequency information,

wherein the waking up the preset function of the smart device based on the multi-frequency tone comprises:

determining whether the multi-frequency tone is wake up information based on energy information of the plurality of single-frequency tones, and

waking up the preset function of the smart device when the multi-frequency tone is the wake up information; and

wherein the determining whether the multi-frequency tone is the wake up information based on the energy information of the plurality of single-frequency tones comprises:

performing framing on each single-frequency tone,

determining frame energy information of each frame of data of each single-frequency tone, and

determining whether the multi-frequency tone is the wake up information based on the frame energy information of each single-frequency tone, wherein the frame energy information of the single-frequency tone is a ratio of point energy information of a frequency point of the single frequency tone to frequency band energy information of a frequency band corresponding to the frequency point.