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MidtermReview

# MidtermReview - triangle amp(Pn = amp(P1 1/n*2 know which...

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Review for Midterm Factoid type questions that are in the reading are on the midterm weight of atmosphere at Earth's surface speed of sound through Earth's atmosphere range of human hearing in frequency; in amplitude highest and lowest note on the piano sample rate and bps of audio CDs ratios of octave, fourth, fifth and semi-tone/minor second etc. Logarithms Amplitude: dB = 20 log ( Amp(new)/Amp(orig) ) 6dB for double the amp, -6dB for half, 20dB for 10 times, -20dB for 1/10th etc. Pitch: f = 1/p; seconds/milliseconds, Hz/kHz. Harmonic spectrum, overtone series Timbre 1) waveshape/partials - frequency: freq (Pn) = freq (P1) * n - amplitude sine - no partials saw, square - amp (Pn) = amp (P1) * (1/n)
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Unformatted text preview: triangle - amp (Pn ) = amp (P1) * ( 1/n**2) know which ones have no even partials 2) envelope - ADSR 3) onset transient bits and bytes numeric values: converting to and from decimal number of values that can be represented in a certain number of bits binary encoding, ASCII Digital recording and playback of sound sample rate (samples per second) and sample period; quantizing time Nyquist frequency: N = SR/2 aliasing: F’ = | ns - f | bits per sample; quantizing amplitude dynamic range signal to noise ratio Digital recording/playback of sound, use of filters smoothing filter, anti-aliasing filter memory equation: M = LRSC...
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