The Sweep Enable feature is unique to FREQUIA and allows you to choose whether to hear the equalizer parameters change in real-time as you adjust the controls. When disabled, the audio output will be muted when you adjust a parameter (frequency, gain, or Q) while monitoring the Response signal, then unmuted one second later. This prevents you from hearing the parameters change and forces you to estimate the answer based on your memory.
Sweep Enable / Disable buttons
Sweep Enable only impacts the Response signal. You will only hear the effect of disabling Sweep Enable if you are monitoring the response signal.
Within audio engineering education, there are two conflicting schools of thought concerning how students should learn to use equalizers ('sweep' vs 'don't sweep') and much has been written about the merits of not sweeping throughout the spectrum. However, despite this, there remains no empirical evidence to support either the 'sweep' or 'don't sweep' method, which is why FREQUIA gives you the choice.