1 / 9

Dialing Tone Recognition

Dialing Tone Recognition. Samuel Simmons Justry Weir Eduardo Moya Abubakr Mohamed. Dual Tone Multi Frequency. Theory. Record a series of dialing tones Input signal to Matlab Play sound file Perform FFT Represent signal graphically Output numbers dialed. How it Works. Recording

jag
Download Presentation

Dialing Tone Recognition

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Dialing Tone Recognition Samuel Simmons Justry Weir Eduardo Moya Abubakr Mohamed

  2. Dual Tone Multi Frequency

  3. Theory • Record a series of dialing tones • Input signal to Matlab • Play sound file • Perform FFT • Represent signal graphically • Output numbers dialed

  4. How it Works • Recording • Run Program • Input file name of recording • Program runs / runtime • Displays number and graphs

  5. Experimental Setup • Hardware • Software • Types of different sound scenarios

  6. Data Results • Higher quality signal with little noise • Noise and signal of similar power • Poor signal quality with noise

  7. FFT Plots (Ideal Signal)

  8. Spectrogram (Ideal Signal)

  9. Conclusion • Equipment • Environment • Run Time • Efficiency

More Related