Voice enhancement method and apparatus of smart device and smart device

A voice enhancement apparatus of a smart device, comprising:

• a voice signal collecting unit for monitoring and collecting a voice signal sent by a user in real time;
• a user direction determining unit for determining a direction of the user according to the voice signal;
• a depth image collecting unit for collecting a depth image in the direction of the user;
• a sound source direction determining unit for determining a sound source direction of the user according to the depth image;
• and
• an enhancement processing unit for adjusting a beamforming direction of a microphone array on the smart device according to the sound source direction of the user, and performing enhancement processing on the voice signal.

A smart device, comprising a memory and a processor which are communicatively connected by an internal bus, wherein the smart device further comprises a voice collector and a depth camera that are connected to the processor respectively;

• the voice collector monitors and collects in real time a voice signal sent by a user, and sends the voice signal to the processor;
• the depth camera collects a depth image in the direction of the user, and sends the depth image to the processor;
• the memory stores program instructions executable by the processor, and when executed by the processor, the program instructions is able to implement the steps of:
• determining a direction of the user according to the voice signal received;
• receiving a depth image in the direction of the user, and determining a sound source direction of the user according to the depth image;
• and
• adjusting a beamforming direction of a microphone array on the smart device according to the sound source direction of the user, and performing enhancement processing on the voice signal.