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When checking signal flow, the first thing you need to confirm is that the signal is _____. ✔✔being generated by the source components What type of connection is pictured below? (wire under sc... rew) ✔✔direct connection What type of chart is displayed below? (activity/year/budget/actual) ✔✔gantt chart This type of audio system reinforces or amplifies a presenter's voice so that they'll be heard over a larger audience. ✔✔Speech Reinforcement System 0 dB SPL describes: ✔✔the threshold of human hearing What is a decibel? ✔✔a logarithmic scale used to describe ratios with a large range of values An audio amplifier outputs 75 watts and then it is decreased to 50 watts. What is the change in decibels? ✔✔Negative -1.8 dB How loud (in decibels) does a 60 Hz sound have to be for it to be audible? ✔✔40 dB According to the equal loudness curve chart below, how loud does a 20 Hz sound have to be before it is audible? ✔✔70 dB "Weighting" a sound pressure level measurement accounts for differences in the way _____. ✔✔humans perceive different frequencies at a given listening level You measure the background noise level in a conference room at 40 dB SPL A-wtd. What is the target sound pressure level of the audio system? ✔✔65 A sound wave must be transduced into _____ before it can be transmitted through the audio signal path ✔✔electrical energy Modern RF wireless microphones allow the user to _____ frequencies to avoid interference. ✔✔change [Show More]

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