Expanding the hearing threshold:
constructing a more complete sensory world
Please click on the video to hear the subtle sounds that your ears hard to hear in daily life.
In contrast to vision, the results of auditory research are much clearer.
When filmed with a video camera with recording equipment, microphones and remote portable recorders can capture more subtle, overlooked, but actually real sounds, thus creating a more complete sensory world.
In very quiet environments, the smallest sound intensity that a person can just hear at a certain frequency is the hearing threshold, while the sound that causes auditory pain is the pain threshold. In between is the range of loud sounds that a person can hear, which also known as the hearing domain.
In general, the hearing range for teenagers is between 20 and 20 KHz, for middle-aged people it is 30-15 KHz, and for older people it is 100-10 KHz.
However, the use of microphones and headphones helps to widen this range, allowing filmmakers to hear tiny microscopic sounds that they otherwise would not hear.
The ear, for example, is often difficult to hear room tone in a room. As a result, while filmmakers are shooting in an extremely quiet environment, their ears will assume that the environment is completely silent. However, filmmakers' hearing limits are enlarged with the use of microphones and portable recorders, and they can hear the actual room tone, including the sound of air moving through the area and the sound of breathing.