Belmont Sound Reinforcement questions and answers latest top score.

Belmont Sound Reinforcement questions and answers latest top score. Natural Sound - correct cessed straight from source live sound reinforcement - correct ss of manipulating and amplifying sound for the purpose of allowing a small sound source to be heard and understood over an area that, by itself it couldn't be naturally live sound - correct combination of natural and reinforced sound Personal PA - correct est 1-12 people range 10-20 ft Band PA - correct y scalable 10-2,000 people Point-source speakers point-source speakers - correct comes from a single source rather than surround touring/stadium PA (Line arrays) - correct answers.Biggest PA More control, not necessarily louder takes physics into account Distributed system - correct public announcement like intercom in schools can isolate a certain location to send sound to for short term listening Direct Public Address System - correct answers.Like with a public speaker speakers pointed at the audience For complex messages Performance Systems - correct relaying art like public address system, but includes some processing ability Primary goals of sound reinforcement - correct ligibility fidelity power control secondary requirements for sound systems - correct bility longevity flexibility what you need to get good sound - correct ize gain to feedback - how much you can turn the gain up before creating feedback (optimized by equipment choice and position) max signal/noise ratio ensure headroom minimize distortions types of distortion - correct riven sound harmonic distortion intermodulation overdriven distortion - correct ng equipment to the point where can't handle the peaks and it adds harmonics harmonic distortion - correct es harmonics RELATED to the fundamental that were not present at the input not always bad intermodulation distortion - correct frequencies which are completely unrelated combine to create frequencies which were not present in the first place usually creates a sum and difference of the two frequencies known as dissonant sound - almost always bad what causes feedback - correct ase in phase shift above unity gain at certain frequencies (constructive interference) dependent on the equipment used and the positioning of said equipment crest factor - correct rence between RMS and peak of the signal (maximum amplitude - average amplitude) RMS - correct ge peak level squared, and the mean of those makes it so there's no negatives, to it takes into account the whole waveform what tipe of waves are sound waves - correct tudinal waves flutter echo - correct bouncing back and forth between walls multiple times diffusion - correct surface which is not perfectly flat will diffuse sound - i.e. rock or brick walls this is helpful because it causes the sound to lose energy absorbtion - correct sound goes into a surface and friction from the surface turns the kinetic energy into heat absorbtion coefficient - correct of 0 to 1 with 1 as 100% absorbing different materials absorb different frequencies better than others thicker and spongier things tend to absorb more low end and thicker ones absorb everything better absorbtion coefficient for drywall - correct answers.~.5 concrete absorbtion - correct answers..1 cinderblock absorbtion - correct answers..31 carpet absorbtion - correct answers..5 wood pannel absorbtion - correct answers..14 stage apron - correct answers.The part of the stage extending in front of the curtain line reverb early reflection time - correct answers.<80ms