Assertion: audible frequency | /r/HasProperty | amplified
Facets:
value: efficiently
type: DEGREE
Source sentences:
text: The idea is to reduce the incoming frequency, which may be, for example 1,500,000 cycles (200 meters), to some suitable super-audible frequency that can be amplified efficiently, then passing this current through an intermediate frequency amplifier, and finally rectifying and carrying on to one or two stages of audio frequency amplification.