sound basics lesson content #39
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Contributor
andrew-1234
commented
Dec 6, 2022
andrew-1234
commented
- Closes Add content to sound-basics in the lessons section #31
- Adds background info and notes to slides in the presentation
- Adds requirements and practical pages
- Practical is a short exercise on changing window length in Audacity to understand time/freq spectrogram trade-offs
- Closes #31 - Adds background info and notes to slides in the presentation - Adds requirements and practical pages - Practical is a short exercise on changing window length in Audacity to understand time/freq spectrogram trade-offs
✅ Deploy Preview for open-ecoacoustics ready!
To edit notification comments on pull requests, go to your Netlify site settings. |
atruskie
requested changes
Dec 6, 2022
- adds image titles - adds katex math
- fixes indentations - adds link re: dBs - removes details box on requirements
Co-authored-by: Anthony Truskinger <[email protected]>
Co-authored-by: Anthony Truskinger <[email protected]>
Co-authored-by: Anthony Truskinger <[email protected]>
atruskie
approved these changes
Jan 4, 2023
Comment on lines
+6
to
+7
| This is a simple exercise to help you become familiar with changing the window | ||
| size of a sound file using Audacity. This will help you to understand how |
There was a problem hiding this comment.
Suggested change
| This is a simple exercise to help you become familiar with changing the window | |
| size of a sound file using Audacity. This will help you to understand how | |
| This is a simple exercise to help you become familiar with changing | |
| spectrogram settings (like the window size of the FFT used to make a | |
| spectrogram) in Audacity. This will help you to understand how |
| This is a simple exercise to help you become familiar with changing the window | ||
| size of a sound file using Audacity. This will help you to understand how | ||
| changing the window size can alter the frequency and temporal resolution of your | ||
| spectrograms, and affect how your spectrograms will look visually. |
There was a problem hiding this comment.
Suggested change
| spectrograms, and affect how your spectrograms will look visually. | |
| spectrograms, which affects what information your spectrograms will show. |
| size of a sound file using Audacity. This will help you to understand how | ||
| changing the window size can alter the frequency and temporal resolution of your | ||
| spectrograms, and affect how your spectrograms will look visually. | ||
|
|
There was a problem hiding this comment.
Add a setup section, e.g.:
| of the sampling frequency. This file was recorded with a sampling | ||
| frequency of 22050 Hz, and therefore has a Nyquist Frequency of 11025 Hz. | ||
| 6. Moving on to the algorithm settings, take particular note of the window size. | ||
| This is the number of samples that are used to calculate the spectrogram. |
There was a problem hiding this comment.
Suggested change
| This is the number of samples that are used to calculate the spectrogram. | |
| This is the number of samples that are used to calculate each frame of the spectrogram. |
| This is the number of samples that are used to calculate the spectrogram. | ||
| Recall from the presentation that temporal and frequency resolution of the | ||
| spectrogram is related to the window size, which results in a trade-off | ||
| between frequency versus temporal resolution. The larger the window size, the |
There was a problem hiding this comment.
Suggested change
| between frequency versus temporal resolution. The larger the window size, the | |
| between frequency and temporal resolution. The larger the window size, the |
| more samples are used to calculate the spectrogram, and the more frequency | ||
| resolution you will have. However, the smaller the window size, the more | ||
| temporal resolution you will have. | ||
| 7. Question: Set the window length value to 2048. What is the temporal |
There was a problem hiding this comment.
Suggested change
| 7. Question: Set the window length value to 2048. What is the temporal | |
| 7. Question: Set the window length value to `2048`. What is the temporal |
| Temporal resolution = 0.093 seconds, Frequency resolution = 10.767 Hz. | ||
| </details> | ||
|
|
||
| 8. Now, change the window size to 256. Click on the _Window size_ input |
There was a problem hiding this comment.
Suggested change
| 8. Now, change the window size to 256. Click on the _Window size_ input | |
| 8. Now, change the window size to `256`. Click on the _Window size_ input |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.