Patent ID: 11961522
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method of recognizing a user voice, the method comprising:
obtaining an audio signal segmented into a plurality of frame units;
determining an energy component for each filter bank by applying a filter bank distributed according to a preset scale to a frequency spectrum of the audio signal segmented into the plurality of frame units;
smoothing the determined energy component for each filter bank;
extracting a feature vector of the audio signal based on the smoothed energy component for each filter bank; and
recognizing the user voice in the audio signal by inputting the extracted feature vector to a voice recognition model,
wherein the obtaining of the audio signal comprises determining a window length of a window to segment into the plurality of frame units, and
wherein the window length of a window used when a vocal tract length perturbation (VTLP) is applied to the frequency spectrum of a training signal is different from the window length of a window used when a room impulse (RIR) filter is adopted and the window length of a window used when actually obtained user voice in the audio signal is recognized.