4. The method according to claim 1 , further comprising: inputting, into an audio signal processor, an audio signal of a voice and background noise; performing, using the audio signal processor, speech recognition to retrieve speech content of the voice, the speech content containing a plurality of portions, each of the plurality of portions of the speech content including the one or more words; and performing, using the audio signal processor, background noise detection to detect the background noise.
4. The method according to claim 1 , further comprising: inputting, into an audio signal processor, an audio signal of a voice and background noise; performing, using the audio signal processor, speech recognition to retrieve speech content of the voice, the speech content containing a plurality of portions, each of the plurality of portions of the speech content including the one or more words; and performing, using the audio signal processor, background noise detection to detect the background noise. 6. The method according to claim 4 , wherein the audio signal is input to the electronic device in response to outputting, on the electronic device, a query to provide an audio signal.