Search results
Results from the WOW.Com Content Network
Room modes. Room modes are the collection of resonances that exist in a room when the room is excited by an acoustic source such as a loudspeaker. Most rooms have their fundamental resonances in the 20 Hz to 200 Hz region, each frequency being related to one or more of the room's dimensions or a divisor thereof.
Room acoustics is a subfield of acoustics dealing with the behaviour of sound in enclosed or partially-enclosed spaces. The architectural details of a room influences the behaviour of sound waves within it, with the effects varying by frequency. Acoustic reflection, diffraction, and diffusion can combine to create audible phenomena such as room ...
Air changes per hour, abbreviated ACPH or ACH, or air change rate is the number of times that the total air volume in a room or space is completely removed and replaced in an hour. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced each ...
The calculation of the critical distance for a diffuse approximation of the reverberant field: =, where is the degree of directivity of the source (= for an omnidirectional source), the equivalent absorption surface, the room volume in m 3 and the reverberation time of room in seconds.
Negative room pressure is an isolation technique used in hospitals and medical centers to prevent cross-contamination from room to room. [1][2] It includes a ventilation that generates negative pressure (pressure lower than that of the surroundings) to allow air to flow into the isolation room but not escape from the room, as air will naturally ...
Mixing systems generally supply air such that the supply air mixes with the room air so that the mixed air is at the room design temperature and humidity. In cooling mode, the cool supply air, typically around 55 °F (13 °C) (saturated) at design conditions, exits an outlet at high velocity.
Digital room correction may involve minimum phase algorithms, to maintain wavefront coherence over the intended frequency range. The use of analog filters, such as equalizers, to normalize the frequency response of a playback system has a long history; however, analog filters are very limited in their ability to correct the distortion found in many rooms.
Reverberation (commonly shortened to reverb), in acoustics, is a persistence of sound after it is produced. [1] Reverberation is created when a sound or signal is reflected. This causes numerous reflections to build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and ...