Recent content by cowboy3

  1. C

    Frequency and Voltage relation

    No they are independent. The way they separate different frequencies in radio for instance is using a tuned circuit like a narrow band filter. Tuning that to different frequencies separates out each one.
  2. C

    Acoustic radar project for students

    I think the term acoustic radar and sodar are commonly used for sonar in air though sonar is correct also.
  3. C

    Acoustic radar project for students

    I came across an article in American Journal of Physics recently that describes how to build an acoustic radar by transmitting a carrier modulated with pseudo-noise code through a speaker and simultaneously receiving the reflection with a directional microphone. One then does some signal...
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