Course Title: PHYSICS OF SOUND AND VOICE PRODUCTION
Course Number: RHS 377
Credit hours: 2+2 = 4
Prerequisite: RHS 247
Course in-charge: Dr. Ravi S Shukla
Course Description: An examination of the basic fundamentals, concepts and theories of acoustics of speech and signal processing. The application of scientific technique methodologies and instrumentation used in quantification, recognition and identification of speech and other acoustic phenomena
1. To develop an understanding of the laws and principles that governs the transmission of sound waves.
2. To develop an understanding of the acoustic properties of voice and speech sounds.
3. To familiarize with the procedures and instruments used in the analysis of speech sounds
WEEK 1 and 2: Introduction to sound, speech, acoustics of speech, and physical quantities like force, energy, velocity acceleration, inertia; properties of sound and ultrasonic sounds
Week 3: Production and propagation of sound, pure tones, simple harmonic motion (SHM) with pendulum analogy, concept of waveform, amplitude, wavelength, velocity, echo, reverberations, beat frequency, decibels, equal loudness contours and free and forced vibration with pure tones and types of wave motion
Week4 and 5: Complex tones: periodic and aperiodic sounds, concept of harmonics, and spectrum of sound, free and forced vibration with complex tones. Introduction to the concept of resonance
Week 6: INCOURSE EXAMINATION 1
Week 7 and 8: Speech mechanism as sound generator: Review of the anatomy and physiology of respiratory mechanism. Respiratory mechanism for voice production, and understanding the following terminologies; vital capacity, total lung volume, tidal volume, residual volume, inspiratory reserve volume and expiratory reserve volume
Week 9 and 10: Review of anatomy of the phonatory mechanism; theories of voice production, introduction to the following concepts; fundamental frequency, habitual frequency, frequency Range, speaking fundamental frequency & range, semitones and the quality of voice
Week 11: INCOURSE EXAMINATION 2
Week 12: Mechanisms involved in frequency and intensity changing process and the relationship between frequency and Pitch, and intensity and loudness.
Week 13: Vocal tract as resonator and the acoustic properties of the vocal tract, theoretical background of format frequencies.
Week 14: Spectrograph and types of spectrograms, acoustic characteristic of vowels and consonant sounds
Week 15and 16: FINAL EXAMINATION:
Practical: Practical aspects of the course include familiarizing the students with the instruments like, Vocal II, Computerized speech Lab, spirometer, Spectrograph etc and the methods of measuring various voice and speech parameters mentioned above using these instruments.