A hearing aid includes an image sensing device, a sound input transducer, a
sound output transducer, and a processor. The image sensing device detects
an image from a selected region of a user of the hearing aid while the
sound input transducer receives sound and produces an audio signal
representative of the sound. The sound output transducer receives the
audio signal and converts the audio signal to a sound wave that is
provided to the user. The processor receives the image, analyzes the image
to determine an existence of human-generated sound, and provides the audio
signal from the sound input transducer to the sound output transducer when
human-generated sound is detected. The audio signal is provided at a first
level when human-generated sound is detected and is provided at a second
level in an absence of human-generated sound.
