ECGR4122/5090 Acoustics Fall 2021 Prof. Weldon: EPIC 2228, email@example.com Do NOT contact instructor through canvas, use email only. Office hours: see my home page http://coefs.uncc.edu/tpweldon/ The course website is at http://coefs.uncc.edu/tpweldon/, listed under the "courses" tab at the top of the webpage. Resources for this course are also available in Canvas. Students must access the course website and Canvas modules for class notes, videos, links, and other materials. Textbooks (required): 1) Acoustic Engineering Lecture Notes 2021 Thomas Paul Weldon, ISBN 979-8538016945 available on amazon.com https://www.amazon.com/Acoustic-Engineering-Lecture-Notes-2021/dp/B099JY6ZS5/ 2)Acoustics for Engineers: Troy Lectures, 2nd Ed. by Jens Blauert, Ning Xiang Free campus version (on campus vpn): https://www.springer.com/us/book/9783642033926 Also available as amazon.com rental Other references: - Acoustics. Beranek, L. L. (1954). United Kingdom: McGraw-Hill. - Acoustics: An Introduction to Its Physical Principles and Applications, A.D. Pierce, 1989,Acoustical Society of America Software (required on your personal computer): 1) you must be able to run maatlab and siimulink on your personal computer plus AudioToolbox https://www.mathworks.com/products/audio.html NOTE: SEE COURSE WEBPAGE FOR required maatlab version/release Download website is: https://www.mathworks.com/academia/tah-support-program/eligibility.html Hardware required (purchase for projects/experiments) see http://thomasweldon.com/tpw/courses/eegr4122/e4122p07reflection.html 1) Arctic S111 BT Mobile Bluetooth V4.0 Sound-System approx $10 https://www.amazon.com/gp/product/B00KS3XCTU 2) Microphone connected to computer (possibly from earbuds with mic) Course Format This course is intended to be delivered in a in-person format,but may go fully online as needed or as directed by the university. Various course components may be delivered online (through Canvas and the course website), and other parts should be conducted in the classroom, with social distancing guidelines applied. The components of this course are meant to provide students with some flexibility in their learning. The course is designed to engage students in a process of pre-class activities, in-class activities, and post-class activities, including projects and supplemental videos. In the event of all-online classes, it is likely that weekly or topical videos will be made available, and class-meeting time zoom/etc sessions will be used for questions, quizzes, projects, etc. Any online, or face-to-face class may be recorded, with copyright by Thomas P. Weldon, all rights reserved. Internet requirement: you will need reliable high-speed access. Exams may be open book and on canvas. Quizzes may or may not be announced. Grading: Exam1 30%, Exam2 30%, Homework/Quizzes/Projects/etc 40%. NOTE: instructor may change weights. Scale: 90-100 A, 80-89 B, 70-79 C, 60-69 D, with "curve," if any, entirely at the discretion of the instructor. See prior year projects, exams, handouts, quizzes on website. For potential documented covid absences, one quiz grade will be dropped for all students, so save this option for any covid absence. Similarly, project submissions may be delayed one week, and/or makeup exams will be prepared, but only for covid case with acceptable documentation emailed to the instructor before the project due date or exam date. The College of Engineering requires all students to own a laptop computer, and students must bring a laptop to every class meeting, since all quizzes/exams/projects are planned to be online, even in the classroom. Students without a laptop during any quiz or exam will receive a grade of zero or other sanctions. Collaboration (not copying) on homework and projects is encouraged. However, different project groups may NOT copy program code or report material. Class attendance and participation are expected. You must read the textbook; it is impossible to cover all material during class. The course will roughly follow the outline below; some key topics are noted in the tentative list below. Sequence Topic Intro and Applications of acoustics (Blauert 1.0-1.7) Ultrasound, pressure, velocity, frequencies, dB 1 Mechanical oscillators (Blauert 2.0-2.5 Undamped and damped Mass+spring, mechanical impedance 2 Mechanical and electrical impedance (Blauert 1.4, 2.1-3.3) RLC equivalents of mechanical and acoustic elements Undamped and damped Mass+spring, mechanical impedance 4 Electrical and mechanical waves (Blauert 7.0 LC lines, telegrapher equations, wave equations 5 Acoustic Waves (Blauert 7.1-7.4,9.1-9.6) Acoustic transmission line and acoustic waves 3D plane waves and acoustic radiation Exam 1 6 Waves on strings Transverse waves on strings 7 Reflection of waves (Blauert 7.5, 7.6, 8.6) Reflection coefficient, standing waves 8 Acoustic signals and frequency analysis Fourier transform Frequency content of acoustic signals 9 Room acoustics (Blauert 9.0, 9.1, 12.0-12.3) Monopoles, dipoles, ray-tracing, echogram 10 Acoustic arrays(Blauert 9.2-9.4) Array patterns, array frequency response Exam2 (typically during next-to-last week of classes) 15 Final project reports (see last year for examples) Final Exam See Video Presentation and Review below Video Presentation and Peer Reviews (subject to change): Topic TBD (see last year for examples). Every group must upload a 5 minute video of a presentation on/before 5 PM of the night before the scheduled final exam, so that all videos will be ready online for peer review during the scheduled final exam meeting time. In addition, a pdf of the presentation slides must be emailed to the instructor by the same deadline (as a backup in case of video technical difficulties). As an online final examination class session, each individual student must view randomly assigned videos during the final exam period, and/or take an online quiz at instructor discretion. The video and reviews will be worth approximately one project. Excused absence makeups: May be scheduled for the last class period. Makeups will usually cover cumulative course material. COVID-19 Protection: It is the current policy of UNC Charlotte that as a condition of on-campus enrollment, all students are required to engage in safe behaviors to avoid the spread of COVID-19 in the 49er community. Such behaviors specifically include the requirement that all students properly wear CDC-compliant face coverings in all indoor spaces on campus, including classrooms and labs, regardless of vaccination status. Failure to comply with this policy in the classroom or lab may result in dismissal from the current class session. If the student refuses to leave the classroom or lab after being dismissed, the student may be referred to the Office of Student Conduct and Academic Integrity for charges under the Code of Student Responsibility. Students are expected to attend every class and remain in class for the duration of the session when it is safe to do so in accordance with university guidance regarding COVID-19. Failure to attend class or arriving late may impact your ability to achieve course objectives which could affect your course grade. An absence, excused or unexcused, does not relieve a student of any course requirement. Regular class attendance is a studentís obligation, as is a responsibility for all the work of class meetings, including tests and written tasks. Any unexcused absence or excessive tardiness may result in a loss of participation points. Students are encouraged to work directly with their instructors regarding their absence(s). For absences related to COVID-19, please adhere to the following: 1)Complete your Niner Health Check each morning. 2)Do not come to class if you are sick. Please protect your health and the health of others by staying home. Contact your healthcare provider if you believe you are ill. 3)If you are sick: If you test positive or are evaluated by a healthcare provider for symptoms of COVID-19, indicate so on your Niner Health Check to alert the University. Submit a copy of your Niner Health Check notification email to your instructors. Upon learning that you have tested positive or have been diagnosed for symptoms of COVID-19, either from your reporting or from Student health Center testing or diagnosis, representatives from Emergency Management and/or the Student Health Center will follow up with you, and your instructors will be notified of the need for accommodations, as necessary. 4)If you have been exposed to COVID-19 positive individuals and/or have been notified to self-quarantine due to exposure, indicate so on your Niner Health Check to alert the University. Representatives from Emergency Management and/or the Student Health Center will follow up with you as necessary. Submit a copy of your Niner Health Check notification email to your instructors. If you need any additional support verifying your absence after you have communicated with your professors, contact Student Assistance and Support Services. 5)To return to class after being absent due to a period of self- quarantine, students should submit a copy of their Niner Health Check clearance email to their instructor(s). To return to class after being absent due to a COVID-19 diagnosis, students should submit an online request form to Student Assistance and Support Services (SASS). Supporting documentation can be attached directly to the request form and should be from a student's health care provider or the Student Health Center, clearly indicating the dates of absences and the date the student is able to return to class. Instructors will be notified of such absences. 6)If you are absent from class as a result of a COVID-19 diagnosis or quarantine, as instructor I will provide access to videos to help you continue to make progress in the course. The final decision for approval of all absences and missed work is determined by the instructor. If you miss an exam/quiz for any reason, you will receive a grade of zero (exceptional circumstances must be documented and/or approved by the instructor at least 24 hours prior to the exam). Any special exam or project accommodation request should be made no later than the class meting one week before the exam or project. Late projects will not be accepted, and/or may be penalized up to 30 percent per day, solely at the instructor's discretion. Absence from class sessions or internet sessions may result in grade reduction. The instructor is free to assign students to any project group at any time. Appeals regarding final grade must be communicated to instructor within 14 days after end of semester, since any residual materials may be destroyed thereafter. Departure from classroom during any quiz or exam will result in a grade of zero. Students are responsible for submitting all forms to Disability Services, and must provide a notice of accommodation from Disability Services in the first week or two of the semester (see their office for more information). Audio or video recordings are not permitted, and all course content are copyright by Thomas P. Weldon. If any recording is permitted in writing, such recording remains copyright by Thomas P. Weldon and shall not be distributed. NOTE: Final grading may include a subjective component, at instructor discretion, based on the above rough weightings PLUS the instructor's overall evaluation of student performance in projects and class participation. This syllabus contains the policies and expectations established for this course. Please read the entire syllabus carefully before continuing in this course. These policies and expectations are intended to create a productive learning atmosphere for all students. Unless you are prepared to abide by these policies and expectations, you risk losing the opportunity to participate further in the course. It is the responsibility of the student to be familiar with the academic regulations, degree requirements, religious accommodation for students, course requirements, and all other requirements, policies, and procedures set forth in the current University Catalog and all University Policies. The official university guidelines supersede any contradictions that may exist in this handout. Violations may result in reduction of grades, zero grade, fines, suspension, course failure, or other adverse consequences. In addition, a proper classroom environment is expected by all students, and therefore any disorderly or disruptive conduct or other negative impacts on the classroom, solely at the instructor's discretion, will result in expulsion from such class with a grade of zero for corresponding material, and/or other adverse sanctions as may be deemed appropriate. Use of computers, tablets, phones, etc. during class are disruptive to other students in class, and may be prohibited case-by-case solely at instructor's discretion. If there are any issues or problems within a group, students must follow the Project Problem Resolution Guidelines provided on the course website. The course policies set forth in this syllabus may be modified at any time by the course instructor. Notice of such changes may be by announcement in class, by canvas, and/or by email to the student's UNCC email address. ALL STUDENTS MUST MEET PREREQUISITES AND COREQUISITES FOR THIS COURSE as published in the UNCC Catalog which supersedes this syllabus. Prerequisite: ECGR 3111 with a grade of C or better Engineering major or minor Corequisite: Prerequisite or corequisite: Graduate Extra Project (Graduate level only, 5000 level) worth 10% of total homeworks/quizzes/projects grade. The following is a preliminary description, details may change later in semester. Graduate projects (preliminary description): TBD: See final project website from last year for examples.