The University of Aizu
The Graduate School (Curriculum)
The Academic Calendar
ITC02A: Intro. to Sound & Audio; 音と音声入門
(formerly #129: “Acoustic Modeling” and “Audio Interfaces”)
Tuesdays & Fridays 1 & 2
|Meeting Places; 場所
- M11 [3rd floor of Research Quadrangle, at the end of the
red yellow or cream gray blue wing; nearest Chuo Hospital and Bandai-san, a.k.a. Room 364]
- Lab Exercise
- Std6 (Computer Exercise Room 6 [Room 106], Research Quadrangle)
- Syllabus in Course Catalog
- Description; 授業内容
- It is important to exploit sound as a full partner in computer-human
and developing this potential motivates exploring analogs to visual
modes of expression and also developing expressive models unique to
This course simultaneously explores issues in sound as well as tools
available to manipulate audio.
- Course Themes; 日程及びテーマ
We survey the physics and nature of sound waves and audio,
considered from the perspective of frequency, intensity, and time.
Topics include compression & rarefaction, propagation, transmission, diffusion, diffraction, refraction,
spreading loss, absorption, boundary effects, non-point sources,
reflection, reverberation, superposition, beats & standing waves),
description and representation of sound (analog/digital, complex
analysis, waveforms, pulse code modulation, Fourier analysis);
measurements of sound and audio (sampling, aliasing, decibels,
pressure, power, intensity, level, loudness);
synthesis (additive, AM, FM, envelopes, filtering, equalizers,
psychophysics (loudness, masking, critical bands),
coding and compression (SNR, A-law, u-law, MP3, AAC, parametric stereo),
display and multichannel (“discrete”) systems (transducers, 5.1, speaker arrays, WFS),
and user interfaces (conferencing, virtual concerts, mixed and virtual reality).
- Course Objectives; 目的
The university's exercise rooms feature multimedia workstations,
at which students can work individually or in teams
to explore concepts regarding sound and audio.
Demonstration-rich formal lectures interleaved with laboratory sessions
provide a rigorous, theoretical background
as well as practical experience regarding basic audio operations.
Interactive exercises, based on workstations and tablets, provide realtime "hands-on" multimedia
educational opportunities that are stimulating and creative, as
students enjoy intuitive, experiential learning.
Utilized resources include
audio synthesis and multimedia data-flow visual programming (Pure Data, [Japanese language site]),
audio editing and analysis software (Audacity [Japanese language site]),
interactive physics visualization and auralization physics applets (illustrating wave behavior, DSP, filtering, etc.),
advanced computational and plotting utilities (Mathematica [Japanese language site]),
effects processing (GarageBand [Japanese language site]),
and our own web-based multimedia courseware.
This course is intended to be useful to audio engineers and researchers, as well as musicians.
In other words, this course is about theory, simulation and practice:
playing with sound, learning by doing, and about saying (instead of “see you”) “hear you!”
Students who complete this course will be empowered with basic knowledge of sound and audio
and the confidence to apply those principals to generally encountered
situations in sound and audio engineering.
- Overview: Course organization, assessment, tablets & courseware, hearing anatomy and physiology, analog vs. digital
- Hearing: auditory pathway, pinna, psychoacoustics & perception
- Waves: waveforms, phase, complex numbers, logarithms, FFT & Spectrogram
- Waves: pressure (compression & rarefaction), propagation, transmission, diffusion, diffraction, refraction, spreading loss
- Waves: absorption, boundary effects, non-point sources, reflection, reverberation, superposition, beats & standing waves
- Frequency: tone, register, harmony
- Harmonic content: harmonics, overtones, Fourier analysis, sampling theorem, aliasing, AM & FM
- Musical Frequency: tone, semi-tone, pitch, octaves, scales
- Intensity: volume, loudness, PCM
- Intensity: pressure, power, envelope, RMS, decibels, level, masking
- Multichannel: stereo, speaker arrays, spatialization
- Applications; coding & compression, digital recording and audio editing, filtering, equalizers, speech synthesis
- Time: duration, tempo, repetition, reversal, duty cycle, rhythm & cadence
- Music: DTM composition, audio effects
- Evaluation (assessment): 評価方法
- Homework problem sets (25%), lab exercises (25%), midterm exam (25%) and final exam (25%).
- Facilities; 使用場所
- Exercize Room iMacs (digital audio workstations)
- Materials and Texts; 教科書
- Supplemental Equipment; 補充装置
- iPad tablet (lent to each student) for courseware, homework, and in-class, hands-on demonstrations; iPadをコースウェアー、宿題、および授業でのデモンストレーションに使う
- Supplemental Material
- Prerequisites; 必修科目
Basic math and physics; 数学、物理.
(No specialized knowledge is assumed.)
Note: This course is a prerequisite for ITA10: “Spatial Hearing and Virtual 3-D Sound.”
注: ITA10: 空間聴覚とバーチャル３Ｄサウンドの講義を受ける為の必修クラスです。
- Supplemental links; 参考（授業ホームページ、図書など）
- Class Schedule (First Quarter)
- Lecture notes (on-campus only)
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