Overpressure Overpressure Overpressure (or blast overpressure) is the pressure caused by a shock wave over and above normal atmospheric pressure. The shock wave may be caused by sonic boom or by explosion, and the resulting overpressure receives particular attention when measuring the effects of nuclear weapons or thermobaric bombs. According to an article in the journal Toxicological Sciences, "Blast overpressure (BOP), also known as high energy impulse noise, is a damaging outcome of explosive detonations and firing of weapons. Exposure to BOP shock waves alone results in injury predominantly to the hollow organ systems such as auditory, respiratory, and gastrointestinal systems."
Acoustic shock Acoustic shock Acoustic shock is the symptoms a person may experience after hearing an unexpected, loud sound. The loud sound, called an Acoustic Incident, can be caused by feedback oscillation, fax tones, or signalling tones. Telemarketers and call centre employees are thought to be most at risk. During the exposure, most people will experience discomfort and pain. After the exposure, some people might report shock, nausea and anxiety or depression. Headache, fatigue, hypersensitivity to loud noise and tinnitus may continue for days, weeks or indefinitely. It has not been established how such unrelated symptoms might be caused by an acoustic