A system may include a wearable camera configured to capture images and a microphone configured to capture sounds. The system may also include a processor programmed to receive the images; identify a representation of one or more individuals in the images; receive from the microphone a first audio signal associated with a voice; determine, based on analysis of the images, that the first audio signal is not associated with a voice of any of the one or more individuals; receive from the microphone a second audio signal associated with a voice; determine, based on analysis of the images, that the second audio signal is associated with a voice of one of the one or more individuals; and cause a first amplification of the first audio signal and a second amplification of the second audio signal. The first amplification may differ from the second amplification in one aspect.