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What beat frequencies will be present: (a) If the musical notes A and C are played together (frequencies of 220 and 264 Hz)? (b) If D and F are played together (frequencies of 297 and 352 Hz)? (c) If all four are played together?
$\Delta _ { f } = 0.7 \mathrm { Hz }$
Physics 101 Mechanics
Chapter 17
Physics of Hearing
Sound and Hearing
Rutgers, The State University of New Jersey
University of Michigan - Ann Arbor
Hope College
University of Sheffield
Lectures
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in this volume for a you know that these two frequencies are being produced together. Anyone find out what the beat frequency will be? The beat frequency is simply the difference between them. So that's 2 64 minus 2 20 which is 44 hurts in the second case. Again, it's simply the difference between them. 3 52 minus 27 is 55 hearts, so we have beat frequent. It's got this morning to despair on despair now, for Part C is responding in part. See, all four frequencies are being played means not only will there be these two pairs, but these two frequencies will produce. A big note on these two frequencies will produce a beat note. Let's make it green. So the green beat note frequency will be to 97 minus 2 64 which is 33 hearts and the blue frequency. Responding to 3 52 minus 2 20 will be 132 words. These will be the four beat frequencies one toe 34 When are four of them are played? Seamless that
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