Device control method and electric device

Abstract

A method is provided for controlling an operation of a target device using a plurality of input devices, including a speech input device. The method includes acquiring, from the speech input device, speech information, including i) environmental sound around the speech input device, and ii) a speech instruction indicating an operation to be performed on the target device. The method also includes calculating a level of noise included in the speech information, and recognizing the operation. The method further includes informing a user of a second input device as a recommended input device based on the calculated noise level and the recognized operation instruction, wherein the second input device does not include a speech input device.

What is claimed is: 
     
         1 . A method for controlling an operation of a target device using a plurality of input devices including a speech input device, the method comprising:
 acquiring, from the speech input device, speech information including i) environmental sound around the speech input device, and ii) a speech instruction indicating an operation to be performed on the target device;   calculating a level of noise included in the speech information;   recognizing the operation; and   informing a user of a second input device as a recommended input device based on the calculated noise level and the recognized operation instruction,   wherein the second input device does not include a speech input device.   
     
     
         2 . The method according to  claim 1 ,
 wherein the recommendation for the second input device is determined based on i) the calculated noise level, ii) the recognized operation, and iii) recommended input device information, and   wherein the recommended input device information indicates an input device suitable to each operation to be performed on the target device.   
     
     
         3 . The method according to  claim 1 ,
 wherein if the noise level is higher than or equal to a predetermined value, the user is informed of the second input device as the recommended input device.