What are key phrases related to acoustics in office environments?
Cocktail Party Effect -Sound in a noisy crowded room generated mostly by conversation. Levels rise and fall as people compete with one another to be heard. Masking -The process by which the threshold of hearing of one sound is raised due to the presence of another. -Adding acceptable sounds to an environment to cover unwanted sound and reduce annoyance. Noise Criteria (NC) Noise criteria curves used to evaluate existing listening conditions at ear level by measuring sound levels at the loudest locations in a room. NC criteria can be referred to equivalent dBA levels. Sound Level Meter -Device that converts sound pressure variations in air into corresponding electronic signals. The signals are filtered to exclude signals outside frequencies desired. Speech Privacy -Degree to which speech is unintelligible between offices. Three ratings are used: Confidential, Normal (Non Obtrusive) and Minimal. White Noise -Sound characterized by having an equal amount of energy in each linear frequency
