sound detection using RF receiver?
时间：04-10
整理：3721RD
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i have a problem here for my final year year project.
i was assigned to detect a sound origin in a closed room. i have to develop a device, which is able to detect the sound origin outside that closed room. the sound source (mono-tone) is from a normal sound generator, with a known frequency, may be is 1000hz, 10khz or 20khz. the wall is a thick masonry wall.(see the picture).
so, is it possible for me to use RF receiver to detect that sound origin outside the closed room? what type of antenna i have to use? what kind of problem i would face?
[/url]../imgqa/eboard/Antenna/rf-koony5nj5rv.jpg
i was assigned to detect a sound origin in a closed room. i have to develop a device, which is able to detect the sound origin outside that closed room. the sound source (mono-tone) is from a normal sound generator, with a known frequency, may be is 1000hz, 10khz or 20khz. the wall is a thick masonry wall.(see the picture).
so, is it possible for me to use RF receiver to detect that sound origin outside the closed room? what type of antenna i have to use? what kind of problem i would face?
[/url]../imgqa/eboard/Antenna/rf-koony5nj5rv.jpg
What has RF (Radio Frequency) receiver to do with acoustic waves? Use directional microphones.
that correct RF receiver is needed for receiving RF signals not sound signals of low frequency