Amazon Echo IV and Echo Dot smart speakers, now ultrasonic detection technology for detecting objects in the surrounding environment to determine whether to turn on other household devices such as electric lights at home.
The speaker has two high-frequency unit, an upward low-frequency unit, ultrasonic waves can be emitted through the front of the high-frequency unit, after the microphone can detect the return sound waves. Users can use the Alexa App to enable the feature and set the action to be performed when someone is detected nearby.
Currently, other brands of smart cameras already support dynamic object detection function but rely on vision to achieve. Amazon's technology is similar to ultrasonic radar, which can roughly determine whether there are objects nearby. In addition, Google also uses ultrasound to detect the distance between people and products in the Nest smart display and the Nest mini speaker.
The speaker has two high-frequency unit, an upward low-frequency unit, ultrasonic waves can be emitted through the front of the high-frequency unit, after the microphone can detect the return sound waves. Users can use the Alexa App to enable the feature and set the action to be performed when someone is detected nearby.
Currently, other brands of smart cameras already support dynamic object detection function but rely on vision to achieve. Amazon's technology is similar to ultrasonic radar, which can roughly determine whether there are objects nearby. In addition, Google also uses ultrasound to detect the distance between people and products in the Nest smart display and the Nest mini speaker.
