Noise reduction method, noise reduction device and electronic device

A noise reduction device, comprising:

• one or more noise reduction equipments, wherein each noise reduction equipment comprises a sound receiving equipment, a sound transmitting equipment, a sampling equipment and a control equipment, the control equipment communicates with the sound receiving equipment, the sound transmitting equipment, and the sampling equipment, the sound receiving equipment is configurated to receive environment sound of a location where the noise reduction device is placed, the sampling equipment is configured to capture facial images of a population within a preset range of the location, the control equipment is configured to analyze the facial images of the population to determine whether the one or more persons of the population are in a negative mood, the control equipment is configured to determine whether the noise is present in the environment sound in respond that the one or more persons of the population are detected in the negative mood using an image processing algorithm, the control equipment is configurated to process data of the noise to obtain a noise signal and noise orientations in respond that to the noise is determined in the environment sound, and generate a noise reduction signal having an amplitude same as the noise signal, and an opposite phase to the noise signal, the sound transmitting equipment is configured to play the noise reduction signal towards the noise orientation.

An electronic device comprising:

• at least one processor;
• and
• a data storage storing one or more programs which when executed by the at least one processor, cause the at least one processor to:
• obtain environment data of a location where the noise reduction device is placed, wherein the environment data comprises environment sound and facial images of a population within a preset range of the location;
• analyze the facial images of the population to determine whether one or more persons of the population are in a negative mood;
• determine whether noise is present in the environment sound in respond that the one or more persons of the population are determined to be in the negative mood using an image processing algorithm;
• process data of the noise to obtain a noise signal and noise orientations in respond that to the noise is determined to be in the environment sound;
• generate a noise reduction signal having an amplitude same as the noise signal, and an opposite phase to the noise signal;
• and
• play the noise reduction signal towards the noise orientations.