What is another word for peak-down frequency?
Pronunciation: [pˈiːkdˌa͡ʊn fɹˈiːkwənsi] (IPA) 
The term "peak-down frequency" is used to describe the highest frequency at which a filter or amplifier can operate without significant distortion or attenuation. There are several synonyms for this term, including cutoff frequency, corner frequency, and break frequency. The cutoff frequency refers to the point at which a filter begins to reduce the amplitude of a signal, while the corner frequency refers to the point where the response curve begins to change from flat to rolling off. The break frequency is similar to the corner frequency but is typically used in the context of electronic amplifiers. Overall, these terms describe the frequency at which a signal's amplitude starts to decrease or its phase shift begins to occur, indicating a loss of signal quality.
