Abstract: A tone detection device for detecting whether an input signal having a tone. The device includes a volume gain calculation unit performing a volume gain treatment on frame data and outputting the volume-gain-treated frame data and energy in time domain thereof, a threshold calculation unit calculating a threshold value on the basis of the energy of the volume-gain-treated frame data, a filter transforming the volume-gain-treated frame data by an algorithm and outputting a characteristic value in a first period, and a comparator comparing the first characteristic value and the threshold value to generate a result and determining the frame data of the input signal has the tone on the basis of the result.

Abstract: A tone detection device for detecting whether an input signal having a tone. The device includes a volume gain calculation unit performing a volume gain treatment on frame data and outputting the volume-gain-treated frame data and energy in time domain thereof, a threshold calculation unit calculating a threshold value on the basis of the energy of the volume-gain-treated frame data, a filter transforming the volume-gain-treated frame data by an algorithm and outputting a characteristic value in a first period, and a comparator comparing the first characteristic value and the threshold value to generate a result and determining the frame data of the input signal has the tone on the basis of the result.

Abstract: An embodiment of the present invention provides a robot suitable for receiving an input signal to generate a response. The input signal includes a tone provided with a command and having a first frequency. The robot includes a receiver, a signal processor, a driver and a response device. The receiver receives the tone of the input signal. The signal processor acquires a command by determining whether the first frequency satisfies a predetermined relationship. The driver generates an operation signal according to the command. The response device receives the operation signal and generates the response according to the operation signal.