# Intro. to Sound and Audio Assignments

Due Date Heller: WYHWYH (Why You Hear What You Hear) Speaks (English) Hartmann: PMA (Principles of Musical Acoustics) Hyperphysics (online or iOS stand-alone) Other
Friday, April 14 2-2.2 (Loc 889-991) Chap. 1: "Properties of the Transmitting Medium" through "Derived Physical Quantities" (E: p. 3-24, J: 1-22 Exercises 2.1, 2.2, 2.3, 2.4 (questions from Loc 728, with answers at Loc 6020) Sound & Hearing > Sound Propagation: left branch
Monday, April 17 Sound & Hearing > Hearing: Ear and Hearing, The Outer Ear, The Tympanic Membrane
Friday, April 21 3.8 Power Spectra (Loc 1777) - 3.9 Periodic Functions (Loc 1808) Chap. 5: Complex Waves (E: p. 153-181, J: p. 145-170) Read 8.1-8.2: Standing Waves in Pipes (Loc 1844-1894). Do Problems 2.8: telephone bandwidth (Loc 743, answer @ Loc 6026), 3.3: e vs. 60 dB (Loc 910, answer @ Loc 6037), 3.9: "1+1.5" (Loc 930, answer @ Loc 6041), using Wolfram|Alpha (stand-alone or web-based) to help ("Plot sin(x), sin(1.5 x), sin(x) + sin(1.5 x) for x = 0 to 4 pi"), 8.1 (Loc 1928, answer @ Loc 6200) Standing Waves:
Monday, 24 April
• Read Pd help browser chapters 01-52 (Help > Pd Help Browser ... > Pure Data/ > manuals/ (not "1.manual/"!) > 0.Intro/ > )
• videos
Monday, 8 May
Friday, 12 May
• Fourier Sequence Caution: Browser-particular. Might not work perfectly on all browsers.
Monday, 15 May Study for midterm exam (open book, open notes, tablets and electronic dictionaries, etc. ok). Midterm will be on everything we've done so far, including
Friday, 19 May
Monday, 22 May 4.1 Obtaining Autocorrelation Functions (Loc 1911) - 4.2 Autocorrelation and Power for a Sum of Sinusoids (Loc 1916): Getting the Autocorrelation (Loc 1923), Computing the Power Spectrum (Loc 1945) Chap. 4: Sound Intensity and Sound Pressure: The Decibel— Absolute and Relative Measures of Acoustic Power, Sound Intensity, the Decibel (p. 121-132; J: p. 111-122), Frequently Misunderstood Concepts (p. 150-152; J: p. 141-143)
• Chap. 5
• Read Chap. 5 (Loc 1139-1355). (Note that 'ν' [Greek lowercase nu] is used in this reading as a symbol for the speed of sound instead of the 'C' that we normally see.)
• Chap. 6
• Read Chap. 6 (Loc 1413-1627). (Note that an extra figure is mistakenly included, so that the illustration for Fig. 6.8 is really for Fig. 6.7, the illustration for Fig. 6.9 really for Fig. 6.8, etc.).
Friday, 26 May
• iOS
• djay
• vjay
• Music > Music Video > Kocchi Muite Baby - Hatsune Miku Project DIVA Edition
• iCircuit (RMS, etc.)
• & Wolfram|Alpha (stand-alone or web-based): confirm analytically and experimentally the RMS of an offset signal (with a DC component)
• other
• McGurk Effect
• Shepard Tones
• Tell a story or a joke or relate a conversational exchange, compiling TTS segments into a "spoken word" scenario.
• OS X OS X `say` [English]
• Use at least two synthesized voices.
• Use at least one of `[[emph +]]`..`[[emph -]]` (to emphasize a word or phrase) and `[[rate 200 (or whatever)]]` (to change speaking rate).
• Export several voice segments with something like `say -f input1 -v Alex -o output1.WAV`
• Compile those files into Audacity, which can be used to sequence, arrange (adjust gain and timing), and filter them.
• Use at least one sampled source (your own voice, your cat, a sound effect, etc.) as a conversant, narrator, voice-over, etc.
• Use Left-Right panning (in Audacity) to give each channel its own location in a stereo soundscape.
• Send instructor both the combined dialog (text) and the resultant audio file (as WAV, AIFF, or MP3) file with the subject "S&A Lab.: TTS".
Monday, 29 May 5.1 Complex Waves>Fourier's Theorem - 5.5.3 Triangle Wave Chap. 1.3-1.4: Sound Source Acting on a Medium, Fundamental Physical Properties (p. 10-24; J: 9-14), 3.1-3.3: Logarithms and Antilogarithms: The Concept of Logarithms and Antilogarithms, Scales of Measurement, More on Exponents (p. 95-104; J: 85-93)
• Chap. 5
• Do problems 5.4 (Loc 1367, answer @ 6100), 5.15 (Loc 1401, answer @ 6141), & 5.16 (Loc 1407, answer @ 6142).
• Chap. 10
• Chap. 10: Sound Intensity (Loc 2245-2424)
Sound & Hearing > Standing Waves, Musical Instruments
Tuesday, June 6 Final Exam

Michael Cohen