These noise - cancelling headphones are designed to give their owner sound that's free of external interference from jet engines, trains or other sorts of noise. (pocket-lint.com)
The implementation also was generally poor, with a weak antenna that let the station cut out with minimal external interference. (cnet.com)
Where there's mastery, there's passion, intensity, and commitment to the exclusion of external interference. (gapingvoid.com)