AVIXA Recognized AV Technologist Test

A gate function automatically mutes all audio signals that _____.

1. Fall within a selected frequency range

2. Exceed a set sound pressure level

3. Exceed a set threshold

4. Fall below a set threshold

The correct answer is: Fall below a set threshold

A gate function is designed to control audio signals by muting them based on their amplitude relative to a specified threshold. When audio signals fall below this set threshold, the gate will engage and mute those signals, effectively preventing background noise or quieter sounds from passing through. This is particularly useful in live sound settings or during recording where unwanted noise can affect audio quality. It allows for a cleaner audio signal by silencing parts of the audio that do not meet the desired amplitude, ensuring that only the more prominent sounds are amplified and captured. The other options involve conditions related to frequency ranges or sound pressure levels, which do not align with the primary function of a gate. Instead, they pertain to other types of processing or filtering that are used for different audio manipulation purposes.