IPA: //ˈstɒp.bænd//
KK: /ˈstɑpˌbænd/
A range of frequencies that an electronic filter blocks, preventing signals from passing through.
The engineer adjusted the stopband of the filter to improve its performance.
Stopband → The word is formed from "stop" (from Old English *stoppian*, meaning to close or block) and "band" (from Old Norse *band*, meaning a binding or a strip). The term "stopband" refers to a range of frequencies that are blocked or attenuated in a filter, effectively 'closing off' that range.
Think of 'stopping' something from passing through ('stop') and a 'binding' or 'strip' that holds it back ('band'). This helps you remember that a stopband is a range of frequencies that are blocked.
No commonly confused words.