## complexwave2.jpg

The image is a scientific figure from a book titled "Audiology: Science to Practice" by Kramer & Brown. It's labeled as Figure 3-18 and illustrates an example of a complex periodic waveform with a fundamental frequency of 100 Hz and its harmonics, which are 200 Hz, 300 Hz, and 400 Hz.

The figure is divided into two main parts:

### Left Side: Waveform Representation
- The left side shows the waveform over time. 
- The x-axis represents time in milliseconds (ms), ranging from 0 to 20 ms.
- The y-axis represents amplitude on an arbitrary scale, with values ranging from -8 to +8.
- The graph displays a wave that rises and falls repeatedly within this time frame.

### Right Side: Frequency Spectrum
- The right side of the figure presents a frequency spectrum. 
- It is divided into two subplots:
  - **Top Subplot:** This shows amplitude (on an arbitrary scale) against frequency in Hertz (Hz). Frequencies range from 100 Hz to 400 Hz.
    - There are peaks at 100 Hz, 200 Hz, 300 Hz, and 400 Hz. The height of the bars indicates the amplitude of each harmonic frequency in the waveform.
  - **Bottom Subplot:** This shows phase (in degrees) against frequency in Hertz (Hz). Frequencies range from 100 Hz to 400 Hz.
    - There are peaks at 100 Hz, 200 Hz, 300 Hz, and 400 Hz. The height of the bars indicates the phase shift for each harmonic frequency in the waveform.

The text below the figure explains that with additional sequential harmonics added to a fundamental frequency of 100 Hz (and its harmonics at 200 Hz, 300 Hz, and 400 Hz), the resulting waveform would be a sawtooth waveform.

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.