From 18e65e8e1f7c0de7ee436751bfcd06f2d91b9bf2 Mon Sep 17 00:00:00 2001 From: David Westgate Date: Sun, 20 Oct 2024 16:51:06 -0700 Subject: [PATCH] understanding frequency assignment; small format changes for previous entries --- notebook.md | 35 ++++++++++++++++++++++++++++++++--- 1 file changed, 32 insertions(+), 3 deletions(-) diff --git a/notebook.md b/notebook.md index 8464a62..f711c55 100644 --- a/notebook.md +++ b/notebook.md @@ -1,14 +1,43 @@ +### Sunday 20-Oct-2024 +📝 **Understanding Frequency (2/2)**: Here I watched the remaining three lectures +* [Musical Notes](https://media.pdx.edu/media/t/1_cfrix2or/359647152) +* [Audio Filters](https://media.pdx.edu/media/t/1_0befs86c/359647152) +* [FIR Filters](https://media.pdx.edu/media/t/1_9kugdr0x/359647152) + +These topics cover the music theory of notes, as well as the theoretical application of Discrete Fourier Transforms in the form of filters. + + +On the topic of notes, I found the lecture to be a helpful reference on music theory. Having practiced playing some instruments in the past and reading music, this content was partially review but also novel in understanding the relationship between notes and actual sound frequencies. + + +Audio filters are an interesting topic, and something that I appreciate should be understood better at a theoritcal level before one practices applications. I am sure most, if not all of the audio media (especially music) that I enjoy employs an extent of audio filtering. + + +As someone who often listens classic rock (particularly 60's and 70's rock operas), I find it intersting to have a bit of background on how audio filters work in the analogue domain. I have a strong respect for the analogue audio engineers of those days. + + +The topic of digital filters seems more practical and relevant to my interests as any audio content I create will most certainly be captured and recorded digitaly as is the same for a large portion of the audio content I consume. This lecture introduced DFT, FIR and IIR filters as some common practical digital filtering techniques. All of these concepts were previously unfamiliar. Like mentioned yesterday, I am seeking to find myself some practical application experience to better reinforce the new topics. + +### Saturday 19-Oct-2024 +📝 **Understanding Frequency (1/2)**: Per the assignment, I watched the first three of six lecture clips on topics related to frequency science. This included + +* [Frequency Domain and Fourier Transform](https://media.pdx.edu/media/t/1_dvb8fh2g/359647152) +* [Discrete Fourier Transforms](https://media.pdx.edu/media/t/1_zns263z7/359647152) +* [Applying the DFT](https://media.pdx.edu/media/t/1_zns263z7/359647152) + +These lectures were relatively dense with the calculus based maths requied to work discretely with continuous signals in the time and frequency domain. My takeaways were more so in appreciating the foundational importance of the Fourier Theorem and Fourier Transform, but I feel some applicational practice is needed on my end to better understand the technical math involved. My goal is to conceptualize a self motivated exercise for practice, but I hope a future portfolio assignment will provide some practice for these topics. + ### Thursday 17-Oct-2024 -📝 Today, I finished work on the [clipped](./code/clipped/README.md) assignment. My retrospective thoughts and experience with this work are found within. +📝 **Clipped**: Today, I finished work on the [clipped](./code/clipped/README.md) assignment. My retrospective thoughts and experience with this work are found within. ### Sunday 13-Oct-2024 -📝 Today I posted [my introduction in the course zulip](https://cs516sound-fall2024.zulip.cs.pdx.edu/#narrow/stream/455-introductions/topic/intro/near/76245) and noted a brief background of myself and my motivation for taking the course. My introduction was the first, and I expect to see others from my classmates follow soon +📝 **Say "hi" On Zulip**: Today I posted [my introduction in the course zulip](https://cs516sound-fall2024.zulip.cs.pdx.edu/#narrow/stream/455-introductions/topic/intro/near/76245) and noted a brief background of myself and my motivation for taking the course. My introduction was the first, and I expect to see others from my classmates follow soon ⚙️ On tuesday, I picked up a copy of the course textbook from the library and have since read the first 3 chapters 🤔 Our lectures this week focused on the digital aspects of computer sounds. Particularly, some of this had overlap with topics of my other class CS590 Multimedia Computing and Networking such as the basics of analog to digital conversion, discretation, sampling rate, bit rate, and the nyquist limit, which were coincedentally lectured just an hour before this course. However, here in CSM, we got into further details regarding the bit represtation, and hardware architecture implications, endianness, etc. of storing sound data in bytes. After discussing the theory, the more hands on exposure to programming computer sounds with python was my first experience seeing such a demo. This segues well into the first portfolio assignment, Clipped -📝 Today I began work on the portfolio assignment, [Clipped](./code/clipped/README.md). +📝 **Clipped**: Today I began work on the portfolio assignment, [Clipped](./code/clipped/README.md). ### Sunday 06-Oct-2024 ⚙️ Updated the readme and created this notebook file ### Thursday 03-Oct-2024