## chen1997figure.png

The image consists of two graphs side by side, each representing a different type of vowel: "Non-nasal Vowel" on the left and "Nasal Vowel" on the right. Both graphs are plotted with frequency (FREQ) in Hertz along the x-axis and Magnitude (MAG) in decibels (dB) along the y-axis.

### Left Graph - Non-Nasal Vowel:
- The graph shows a curve that starts at around 60 dB at zero Hz, indicating the highest magnitude of sound energy.
- As frequency increases from left to right, there is a gradual decrease in magnitude until it reaches approximately 25 dB near 4.5 kHz.
- There are several peaks and troughs within this range, suggesting variations in the intensity of different frequencies contributing to the sound.

### Right Graph - Nasal Vowel:
- Similar to the non-nasal vowel graph, this one also starts at around 60 dB but shows a slightly different pattern as frequency increases.
- The magnitude decreases more gradually compared to the non-nasal vowel until it reaches about 35 dB near 4.5 kHz.
- There are fewer peaks and troughs in comparison to the non-nasal vowel graph, indicating less variation in intensity across frequencies.

### Common Features:
- Both graphs have labeled points on the y-axis: P0 (around 60 dB), A1 (around 40 dB), and P1 (around 25 dB).
- The x-axis is marked with frequency intervals from zero to approximately 5 kHz.
- The term "FREQ" is written at the bottom of each graph, indicating that this axis represents frequency in Hertz.

### Identifying Individuals:
There are no individuals or characters present in these graphs. They are purely graphical representations of sound wave characteristics for two types of vowels: non-nasal and nasal.

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.