Audio output device and household appliance

• Main Authors: NIE YUEHUA, CHEN BING
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2022
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SOUND-PRODUCING DEVICES

The utility model provides an audio output device and a household electrical appliance, and the audio output device comprises an acquisition device which is used for acquiring a first sound signal and converting the first sound signal into an electric signal; the processing device is connected with the acquisition device and is used for receiving the electric signal and outputting a first driving signal; and the sound production device is connected with the processing device, faces the working module and is used for outputting a second sound signal under the driving of the first driving signal. Wherein the second sound signal is a sound signal which is equal in amplitude and opposite in phase with the first sound signal. When the audio output device runs, the first sound signal generated when the working module in the household appliance runs can be eliminated, so that the household appliance does not emit noise to the environment in the running process any more, a quiet and comfortable environment is provide