## ipaformantsoverlay.png

The image is a graph titled "F1 and F2 Values by Vowel." It appears to be used in phonetics or speech science to represent vowel sounds based on their formant frequencies. The x-axis represents the first formant frequency (F1) in Hz, ranging from approximately 300 to 500 Hz. The y-axis represents the second formant frequency (F2), also in Hz, ranging from about 80 to 400 Hz.

The graph is divided into different vowel categories based on their articulation and quality:

- **Close Vowels**: These are located at higher F1 values.
    - Front close vowels: i, y
    - Central close vowels: u, o
    - Back close vowels: u, o

- **Close-Mid Vowels**: These have slightly lower F1 values than the close vowels but still relatively high compared to open vowels.
    - Front close-mid vowel: e
    - Central close-mid vowel: θ (theta)
    - Back close-mid vowel: ʊ, ʌ

- **Open-Mid Vowels**: These are located at even lower F1 values than the close and close-mid vowels.
    - Front open-mid vowel: æ
    - Central open-mid vowel: ɜ̞ (schwa)
    - Back open-mid vowel: a

- **Open Vowels**: These have the lowest F1 values on the graph.
    - Front open vowel: a
    - Central open vowel: ɑ̆ (open back unrounded vowel)

The vowels are plotted as points, and some of them appear in pairs. The note at the bottom indicates that when symbols appear in pairs, the one to the right represents a rounded vowel.

There is no additional text or diagrams beyond this graph.

This description was generated automatically from image files by a local LLM, and thus, may not be fully accurate. Please feel free to ask questions if you have further questions about the nature of the image or its meaning within the presentation.