Assertion: acoustic megaphone | /r/HasProperty | replaced by electric megaphone
Facets:
value: since the 1960s
type: TEMPORAL
value: over the years
type: TEMPORAL
Source sentences:
text: Since the 1960s the voice-powered acoustic megaphone described above has been replaced by the electric megaphone, which uses a microphone, an electrically-powered amplifier and a folded horn loudspeaker to amplify the voice.
text: Since the 1960s the voice-powered acoustic megaphone described above has been replaced by the electric megaphone, which uses electric power to amplify the voice.
text: Since the 1960s the voice-powered acoustic megaphone described above has been replaced by the electric megaphone, which uses electric power and a folded horn to amplify the voice.
text: Since the 1960s the voice-powered acoustic megaphone described above has been replaced by the electric megaphone, which uses electric power and a folded horn to amplify the voice.
text: Over the years, the acoustic megaphone has been replaced by the electric megaphone, but you can still see it in spaces where there is a lot of moisture.