Artificial intelligence apparatus and method for recognizing plurality of wake-up words

A method for recognizing a plurality of wake-up words, the method comprising:

• acquiring an audio signal through a microphone;
• generating a pre-processed audio signal from the acquired audio signal;
• extracting a voice interval from the generated pre-processed audio signal, wherein the voice interval is associated with a portion of the audio signal corresponding to a voice;
• setting a wake-up word recognition interval comprising the extracted voice interval and a buffer interval corresponding to the extracted voice interval in the generated pre-processed audio signal, wherein the wake-up word recognition interval is an interval used for recognizing wake-up words;
• and
• transmitting the set wake-up word recognition interval in the generated pre-processed audio signal to a first wake-up word recognition engine stored in a memory and a second wake-up word recognition engine stored in an artificial intelligence server.

A non-transitory recoding medium storing one or more programs, which, when executed by one or more processors of a device, cause the device to perform operations comprising:

• acquiring an audio signal through a microphone;
• generating a pre-processed audio signal from the audio signal;
• extracting a voice interval from the pre-processed audio signal;
• setting a wake-up word recognition interval including the voice interval and a buffer interval corresponding to the voice interval in the pre-processed audio signal;
• and
• transmitting the wake-up word recognition interval of the pre-processed audio signal to a first wake-up word recognition engine stored in a memory and a second wake-up word recognition engine stored in an artificial intelligence server.