Abstract: An electronic apparatus and control method are disclosed. An electronic apparatus includes a memory including at least one instruction, and a processor configured to be connected to the memory and control the electronic apparatus, wherein the processor is configured to receive an audio signal including voice, separate the received audio signal to acquire a plurality of signal frames, convert the plurality of signal frames into a plurality of feature data, normalize the plurality of feature data to acquire a plurality of normalized data, and input the plurality of normalized data into a neural network model learned to identify whether a trigger voice is included in the audio signal.

Abstract: An electronic apparatus includes a storage configured to store a liquid-state machine (LSM) model and a recurrent neural networks (RNN) model, and a processor configured to input and process a feature data acquired from an input data using the LSM model, to input and process an output value output by the LSM model using the RNN model, and to identify whether a preset object is included in the input data based on an output value output by the RNN model. The RNN model is trained by a sample data related to the preset object. The LSM model includes a plurality of interlinked neurons. A weight applied to a link between the plurality of interlinked neurons is identified based on a spike at which a neuron value is greater than or equal to a preset threshold in a preset unit time.

Abstract: An electronic device, an echo signal cancelling method thereof and a non-transitory computer readable recording medium is provided. The electronic device according to an exemplary embodiment includes a speaker configured to output a sound corresponding to a reference signal, a microphone configured to generate a microphone signal by obtaining a received sound, and a filter configured to cancel an echo signal of the reference signal from the microphone signal. In addition, the filter includes a first filter configured to estimate an echo signal of the reference signal and cancel the estimated echo signal from the microphone signal, and a second filter configured to generate an adaptive gain to cancel a residual echo from the microphone signal in which the estimated echo signal is canceled, and generate an output signal by using the generated adaptive gain and the microphone signal in which the estimated echo signal is canceled.

Abstract: An electronic device, an echo signal cancelling method thereof and a non-transitory computer readable recording medium is provided. The electronic device according to an exemplary embodiment includes a speaker configured to output a sound corresponding to a reference signal, a microphone configured to generate a microphone signal by obtaining a received sound, and a filter configured to cancel an echo signal of the reference signal from the microphone signal. In addition, the filter includes a first filter configured to estimate an echo signal of the reference signal and cancel the estimated echo signal from the microphone signal, and a second filter configured to generate an adaptive gain to cancel a residual echo from the microphone signal in which the estimated echo signal is canceled, and generate an output signal by using the generated adaptive gain and the microphone signal in which the estimated echo signal is canceled.

Abstract: An electronic device, a method of cancelling an echo signal thereof, and a non-transitory computer readable recording medium are provided. The electronic device includes a speaker configured to output a sound corresponding to a first audio signal, a microphone configured to acquire a surrounding sound of the electronic device to generate a second audio signal; a double-talk detector (DTD) configured to determine whether a double-talk state, in which an echo signal and a noise signal of the first audio signal are included in the second audio signal, occurs; and an acoustic echo canceller (AEC) configured to generate an estimated echo signal corresponding to the echo signal of the first audio signal based on an adaptive filter (AF) in response to the DTD determining that the double-talk state does not occur and cancel the generated estimated echo signal from the second audio signal to detect an error signal.

Abstract: An electronic device, a method of cancelling an echo signal thereof, and a non-transitory computer readable recording medium are provided. The electronic device includes a speaker configured to output a sound corresponding to a first audio signal, a microphone configured to acquire a surrounding sound of the electronic device to generate a second audio signal; a double-talk detector (DTD) configured to determine whether a double-talk state, in which an echo signal and a noise signal of the first audio signal are included in the second audio signal, occurs; and an acoustic echo canceller (AEC) configured to generate an estimated echo signal corresponding to the echo signal of the first audio signal based on an adaptive filter (AF) in response to the DTD determining that the double-talk state does not occur and cancel the generated estimated echo signal from the second audio signal to detect an error signal.