COURSE-MATERIALS ERRATA
=======================

The most recent version of this document can be found at:

    https://www.ece.uvic.ca/~mdadams/courses/ece260/course_materials_errata.txt

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COURSE-MATERIALS BUG-BOUNTY STANDINGS
=====================================

Summary of Points Awarded to Date (for the Course-Materials Bug-Bounty Program)

Name                        Points
----                        ------

Kira Piwowar                1
Artyom Svetlichnyy          2
Nor Trinh                   2
Sabrina Bryce               1

NOTE: For more details on the Course-Materials Bug-Bounty Program (CMBBP),
please refer to the CMBBP handout distributed at the beginning of the term,
which is also available in electronic form from the course web site.

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TEXTBOOK AND LECTURE SLIDE ERRATA
=================================

The most recent version of the errata for Edition 6.0 of the textbook
and lecture slides can be found at:

    https://www.ece.uvic.ca/~mdadams/sigsysbook/downloads/signals_and_systems_errata-6.0.txt

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VIDEO LECTURE ERRATA
====================

The most recent version of the errata for the 2020-05 ECE 260 video lectures
can be found at:

    https://www.ece.uvic.ca/~mdadams/sigsysbook/downloads/ece260_2020_05_video_lecture_errata.txt

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OTHER ERRATA
============

Errata for the textbook and/or lecture slides are listed in the documents
whose URLs are given above (and not here).

Errata that are not for the textbook and/or lecture slides are listed below.

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Date: 2026-06-29
Name: Sabrina Bryce
Description:

In the most recent version of MATLAB, it appears that a
non-backward-compatible change was made that causes some code for
Assignment 5B to fail, due to a mismatch in array dimensions.

While working on M.1(b) of Assignment 5B using the noisyHandel audio
signal, I encountered the following MATLAB error:

    Requested 73113x73113 (39.8GB) array exceeds maximum array size
    preference (8.0GB) and might cause MATLAB to become unresponsive.

I found that samps was a 73113×1 column vector, while noise was a
1×73113 row vector.

When MATLAB evaluated
    samps = samps + noise; % (line 43 of getAudioSignal)
it attempted to create a 73113×73113 matrix, which caused the memory error.
Adding 
    noise = noise(:); 
after 
    noise = noise(1:length(samps));
resolves the issue by converting noise into a column vector. 

Using the following should also fix the problem:
    noise = noise.'; % replace noise by its transpose
The problem is that the dimensions of samps and noise should match
when computing:
    samps = samps + noise; % (line 43 of getAudioSignal)

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Date:
Name:
Description:

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