Course:

Licenciatura em Tecnologias da Música

Profile(s):

Branch(es):

Contact Hours per Semester:

37.5

Scientific area:

TM

Curricular year:

1

Semesterly/Yearly:

Semestral

Option:

[""]

ECTS:

4

Type (1):

T

Teacher responsible for the Curricular Unit:

Diogo Alarcão

Time allocation for the C.U.:

37.5

Other teachers and time allocation for the C.U:

Learning Outcomes (knowledge, aptitudes and skills to be developed by the students)

To gain the necessary knowledge for the study and understanding of the main phenomena in linear acoustics and of the underlying wave nature of sound, starting from its generation to the propagation and reception of sound waves. Understand the phenomena of transmission, reflection, refraction and interference of acoustic waves. Develop the necessary competencies for the curricular units of Musical Acoustics, Psychoacoustics, Noise and Acoustic Insulation, Room Acoustics and Electroacoustics.

Syllabus:

The harmonic oscillator. Initial conditions. Vibration energy. Damped and forced harmonic vibration. Transient response. Mechanic impedance. Power relations. Resonance and Quality Factor. Introduction to acoustic waves: Types of waves: transversal, longitudinal and mixed. Acoustic pressure, particle velocity, frequency, wave length, velocity of sound, specific impedance, intensity and power. The wave equation: propagating waves and velocity of sound. Plane, spherical and cylindrical waves. Sound levels: pressure, intensity and power. Spectral and total levels. The Doppler Effect. Reflection, transmission and refraction of sound waves. Normal and oblique incidence. Simple sources: the acoustic monopole, dipole, quadripole and piston. Interference phenomena of monochromatic and polychromatic waves. Beats. Beat and Fusion frequencies.

Demonstration of the Articulation of the Programme Contents with the Objectives of the C.U.

Considering the objectives of this curricular unit, any expert in the field can conclude that all the syllabus points aim to give the students the competences and the required knowledge and skills to reach the learning outcomes.

Teaching and Evaluation Methods:

The teaching methodology is based on systematic and organized presentation of information by the teacher, complemented with its study and the approach to the exercises and activities realized in class, as specified in the C.U. objectives. Theoretical-practical lessons having a substantial component of solved exercises being applied to the resolution of real problems practical issues. Students undertake practical work in order to consolidate the knowledge learned during the lessons. Group/Class. The evaluation process is based on observation of the quality of participation in the activities developed during the classes, including classroom works, tests or exams, verifying the level of the acquired knowledge and skills as specified in the C.U. objectives Continuous Assessment: AF= T1x0.7+T2x0.7+TRABx0.2+PARTx0.1 AF - Final evaluation; T1 - 1st test; T2 - 2nd test; TRAB – Practical work; PART – participation in class. Maximum classroom lessons absences: 3 (except student workers). Students who have not completed the Continuous Assessment, or are disapproved by absences, may undertake the Examination in the Normal Season, and If they fail the Normal Season’s exam, they can still do an examination in the Appeal Season. The student who fails the Continuous Assessment may do the examination only during the Appeal Season.

Demonstration of the Articulation of the Teaching Methodologies with the Learning Objectives of the C.U.:

The teaching methodologies are based on the transfer of theoretical and practical concepts through the extensive use of practical exercises and case studies (real), together with classes where the students conduct experimental work. All the concepts and fundamentals presented in the syllabus are widely discussed with the students in the lessons, and, whenever possible, these concepts are applied to real situations that the students know by themselves. This way one can satisfy the objective that the students can learn all concepts related with acoustic waves, in practice. The coherence of the teaching methodologies with curricular unit’s objectives is measured by the performance and progress of students in the lessons, and in the results of the practical works and of the tests or exams.

Bibliography:

Textos de Apoio à UC Ondas Acústicas - Diogo Alarcão. Fundamentals of Acoustics - Lawrence E. Kinsler, Austin R. Frey, Alan B. Coppens, James V. Sanders; Editora: John Wiley & Sons. (2000 – 4.ª edição). Acústica Musical – Luís L. Henrique; Editora: Fundação Calouste Gulbenkian (2011 – 4.ª edição)