AAERT Equipment Exam Questions & Answers (Graded A+)

sound - ANSWER-is defined as vibrations that can be perceived microphone - ANSWER-converts the acoustical energy that is sound into an electrical signal that can be delivered to either an analog or a digital device analog and digital - ANSWER-recordings start the same way; with sound digital mixer or A/D converter - ANSWER-to change the analog signal to a digital signal it will need to pass through an analog to digital converter, commonly referred to as a sample rate (44.1 khz, 48 khz,etc.) bit rate (usually 16 or 24 bits) - ANSWER-the two most important factors in the quality of the new digital audio are low sampling rate - ANSWER-approximation high sampling rate - ANSWER-smooth the bit rate - ANSWER-represents the amount of information, or detail that is stored per unit of time of a recording digital court reporting programs - ANSWER-sample at a rate fast enough, thousands of times a second, so speech sounds are smooth and correctly represented when selecting the microphones that you will use there are several variables: these variables include - ANSWER-Microphone type (dynamic or condenser) microphone pick-up pattern microphone size and stands microphone cost for the purpose of digital reporting, AAERT recommends that you slect - ANSWER-dynamic, condenser, or a combination of dynamic and condenser microphones. Both of these microphone types work in a unique way but can generate a high quality audio reproduction dynamic microphones - ANSWER-(also called "moving coil" microphones) are made up of a diaphragm, a coil, and a magnet. As acoustical energy hits against the diaphragm, which is a flat plate at the front of the microphone, it causes the coil that is attached to it to move back and forth over top of the magnet . they are bulky condenser microphone - ANSWER-consists of a front plate (diaphragm), back plate, and a 48 volt power source. The front and back plate together create a capacitor. wider assortm