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Week 2b - Physics 1240 Today Digital sound resonance Next...

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Physics 1240 1/24/06 Today: Digital sound, resonance Next time: Pressure and sound, harmonic series Last time Audible Range: 20 Hz – 20,000 Hz Sample Rate – How many samples are taken per second (Hz) Bit Depth – Sets the range of integers for the actual value of the sample CD Quality: Stereo – 2 channels, 16-bit (2 16 integer values), 44,100 Hz
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Outline Sampling rate and bit depth (review) Dynamic range Estimates of size of digital sound files Resonance
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CQ 2.8 Your Aunt is Chief Financial Officer at steel company in Pittsburg. She has hired you part-time to post the audio of their quarterly announcement of earnings on the company web site. This is a recording of a teleconference. What might be an appropriate bit depth? A) 8-bit B) 16-bit C) 24-bit D) 32-bit
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What will we see when we zoom in on the unwound guitar string waveform? A) a complex periodic waveform B) a waveform that is not periodic C) a frequency modulated waveform D) none of the above
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Week 2b - Physics 1240 Today Digital sound resonance Next...

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