Method and apparatus for performing speech recognition with wake on voice (WoV)

A speech recognition apparatus comprising:

• a receiver configured to receive a first multi-channel audio signal;
• at least one processor configured to:
• receive a first multi-channel audio signal;
• obtain at least one of a speech signal characteristic or a noise signal characteristic for at least one frequency band of frequency bands corresponding to channel audio signals included in the first multi-channel audio signal;
• generate a signal with an enhanced speech component by performing beamforming on the first multi-channel audio signal based on the speech signal characteristic, a speech signal characteristic obtained for a first frame that was obtained within a certain time period prior to a time that a second frame was obtained, and the noise signal characteristic;
• determine whether the enhanced speech component includes a wake word;
• and
• based on determining that the enhanced speech component includes the wake word:
• determine to wake up;
• and
• activate a speech recognition operation based on the signal with the
• enhanced speech component.