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A pistonphone is an acoustical calibrator (sound source) that uses a closed coupling volume to generate a precise sound pressure for the calibration of measurement microphones. The principle relies on a piston mechanically driven to move at a specified cyclic rate, pushing on a fixed volume of air to which the microphone under test is coupled.
Minimum inhibitory concentration. In microbiology, the minimum inhibitory concentration ( MIC) is the lowest concentration of a chemical, usually a drug, which prevents visible in vitro growth of bacteria or fungi. [ 1][ 2] MIC testing is performed in both diagnostic [ 1][ 2] and drug discovery laboratories. [ 3][ 4] The MIC is determined by ...
A boundary microphone (or pressure zone microphone) is one or more small omnidirectional or cardioid condenser mic capsule (s) positioned near or flush with a boundary (surface) such as a floor, table, or wall. The capsule (s) are typically mounted in a flat plate or housing. The arrangement provides a directional half-space pickup pattern ...
A new type of laser microphone is a device that uses a laser beam and smoke or vapor to detect sound vibrations in free air. On August 25, 2009, U.S. patent 7,580,533 issued for a Particulate Flow Detection Microphone based on a laser-photocell pair with a moving stream of smoke or vapor in the laser beam's path.
If the player answered that they can speak, the game begins with a Stroop test; if the player cannot use the microphone, the game picks a random puzzle from the following: Calculations X 20, Word Memory, Connect Maze, and Number Cruncher. During the Stroop Test, the game will display one of four words and colors: blue, black, yellow, and red ...
The minimum bactericidal concentration (MBC) is the lowest concentration of an antibacterial agent required to kill a particular bacterium. [1] It can be determined from broth dilution minimum inhibitory concentration (MIC) tests by subculturing to agar plates that do not contain the test agent. The MBC is identified by determining the lowest ...
Game testing, also called quality assurance ( QA) testing within the video game industry, is a software testing process for quality control of video games. [ 1][ 2][ 3] The primary function of game testing is the discovery and documentation of software defects. Interactive entertainment software testing is a highly technical field requiring ...
ORTF setup. The ORTF stereo technique, also known as side-other-side, is a microphone technique used to record stereo sound. It was devised around 1960 at the now-defunct Office de Radiodiffusion Télévision Française (ORTF). This technique combines both the volume difference and the timing difference as sound arrives on- and off-axis at two ...