UNIV 213
Science and Engineering of Music and Sound

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Selected Answers to HW #5 (4/7/2026)

Answers to selected graded problems in HW #5 are now available via a link on the Assignments page.

Remember that you must show all of the significant steps leading to an answer to receive full credit for a given problem.

HW #5 - SECOND UPDATE (4/7/2026)

The assignment for HW #5 has been revised to clarify some of the graded problems. The latest revision is dated 4/7/26; make sure that you have the latest version. HW #5 is due via the Moodle site at 11:59 pm on Wednesday, April 8.

Please follow the submission instructions listed in the "Course Policies and Information" document and summarized in the "Homework Submission Links" section at the course Moodle site.

Exam #2 Solutions (4/6/2026)

The solutions to Exam #2 are now available at the course Moodle site.

Exam #2 Results (4/6/2026)

The average score for Exam #2 was 83.9. The average score breakdowns for the individual problems (converted to percentages) were:

• Prob. 1 - 87%
• Prob. 2 - 98%
• Prob. 3 - 73%
• Prob. 4 - 89%
• Prob. 5 - 70%
• Prob. 6 - 67%
• Prob. 7 - 84%
• Prob. 8 - 63%
• Extra Credit - 89%

Help Sessions for Apr. 6–10 (4/5/2026)

I plan to be available at least at the following times this week.

• Monday, 2:30–3:45 pm (BRKI 368)
• Monday 5:00–5:45 pm (BRKI 368)
• Monday 10:00–10:45 pm (Zoom)
• Wednesday, 3:00–3:45 pm (BRKI 368)
• Wednesday, 5:00–5:45 pm (BRKI 368)
• Wednesday 10:00–10:45 pm (Zoom)
• Thursday, 4:00–4:45 pm (BRKI 368)
• Friday, 2:00–3:45 pm (BRKI 368)

I am usually available for short consultations on Mondays, Wednesdays, and Fridays right after class.

Guidelines and additional information:

• Please contact me if you have a conflict with these times and would like to schedule a meeting at a different time.
• The Zoom link is available at the course Moodle site.
• If I am helping another student when you drop by, you may usually join in the conversation.
• If I have been helping you for a relatively long time, I might pause our conversation to help other students who are waiting for assistance.
• For in-person sessions, if I have finished helping you, please move out to the hall or somewhere else so that the chairs in my office are clear for newly arriving students.
• As a courtesy during Zoom sessions, please use your camera.

Reading Assignments for Apr. 6–10 (4/4/2026)

• M: Sections 10.9 through 10.17
• W: Chapter 11, which covers brass instruments
• F: Chapter 11

HW #5 - UPDATE (4/4/2026)

The full assignment for HW #5 is now available. Two new graded problems and one new ungraded problem have been added. HW #5 is due via the Moodle site at 11:59 pm on Wednesday, April 8.

Please follow the submission instructions listed in the "Course Policies and Information" document and summarized in the "Homework Submission Links" section at the course Moodle site.

Reading Assignments for Mar. 30–Apr. 3 (3/31/2026)

• M: Sections 9.5 through 9.9
• W: Introduction to Part III and Sections 4.3 and 10.1 through 10.8
• F: Sections 10.9 through 10.17

Help Sessions for Mar. 30–Apr. 3 (3/31/2026)

I plan to be available at least at the following times this week.

• Monday, 2:30–3:45 pm (BRKI 368)
• Monday 5:00–5:45 pm (BRKI 368)
• Monday 9:00–10:00 pm (Zoom)
• Wednesday, 2:00–3:45 pm (BRKI 368)
• Wednesday, 5:00–5:45 pm (BRKI 368)
• Wednesday 10:00–10:45 pm (Zoom)
• Friday, 2:00–3:45 pm (BRKI 368)

I am usually available for short consultations on Mondays, Wednesdays, and Fridays right after class.

Guidelines and additional information:

• Please contact me if you have a conflict with these times and would like to schedule a meeting at a different time.
• The Zoom link is available at the course Moodle site.
• If I am helping another student when you drop by, you may usually join in the conversation.
• If I have been helping you for a relatively long time, I might pause our conversation to help other students who are waiting for assistance.
• For in-person sessions, if I have finished helping you, please move out to the hall or somewhere else so that the chairs in my office are clear for newly arriving students.
• As a courtesy during Zoom sessions, please use your camera.

Updated Graph and Formula Sheets (3/26/2026)

A copy of the graph and formula sheets that will be made available to you during Exam #2 is now available at the course Moodle site in the "Additional Resources" section. They have been updated to include new material since Exam #1. There is also some information on equal temperament that will be relevant for Exam #3. The sound level meter weightings graph will be in black and white on the hard copy that will be provided for the exam.

Remember that you may use two self-prepared handwritten help sheets during Exam #2 in addition to the graph and formula sheets.

HW #4 Solutions (3/24/2026)

The solutions to HW #4 will become available at 7:00 pm today (March 24) at the course Moodle site in the "Homework Solutions" section.

Remember that HW #4 is due at 6:00 pm today.

Review Session for Exam #2 (3/24/2026)

To help you prepare for Exam #2, an optional review session will be offered at 9:00 pm on Thursday, March 36 in BRKI 264, our usual classroom.

During the review session I plan to answer your questions and/or work through example problems by request. The format of the session is therefore up to you. I strongly suggest that you come prepared with questions to ask.

If you cannot attend the review session but would like to meet with me at some other time before the exam, please contact me.