The result of excess reverberation is distorted speech.Īny one of these conditions (distance, noise, or reverberation) can create listening problems. This creates sound reflections and echoes, called ‘reverberation’ (consider how churches, large gyms, community halls, and some classrooms can be more difficult to hear). Sound waves bounce off hard surfaces like windows, walls and hard floors. If there are poor room acoustics with reverberation, sometimes in a community hallĪ room’s acoustics represent the quality of sound maintained in the room, and they can affect your ability to hear effectively. This is called the signal-to-noise ratio, or S/N ratio.
Speech should be at least 20–25 decibels (dB) louder than any competing noise for optimum hearing. Examples of background noise include ventilation systems, others talking, paper shuffling, computers, radios, TVs, outside traffic or construction and activities in adjacent rooms.īackground noise can make hearing very challenging. Most rooms have background noise that competes with the spoken message or sound we want to hear. If you are in a listening environment with competing noise in the background, like a restaurant You may have no difficulty hearing with someone in close range however, you may have considerable difficulty hearing the same person across a large room. The intensity, or loudness, of a sound, fades rapidly as it travels over distance. The farther away you are from a speaker, the harder it is to hear them.
If there is a distance between the listener and the sound source in a classroom environment
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