Minor Project Presentation 1

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Minor Project Presentation 1

  1. 1. Minor Project<br />Voice <br />& Speech <br />Activated Lock<br />Digital Signal Processing & Its Applications<br />Presentation by:<br />PratishthaShira Ram<br />Shazia Khan<br />Project Guide:<br />Mrs. VibhaTiwari<br />HoD, ECE<br />
  2. 2. Why we chose this area?<br />Because it’s a subject in the current semester, semester 6th.<br />We believe we can have a grasp on the subject while learning it theoretically and practically, both.<br />Because DSP is basically a “numerical” oriented subject, working on it conceptually will be exciting.<br />It will give us exposure to MATLAB.<br />
  3. 3. Why work on voice and speech?<br />Entering data is the old conventional method, where data can be stolen or forged. Voice becomes a personal identification.<br />Futuristically speaking, voice control devices will be prominent.<br />
  4. 4. Voice & Speech<br />Voice is the distinctive quality or pitch or condition of a person's speech.<br />Speech is the vocalized form of human communication.<br />Voice gives the distinction on ‘who’ is speaking.<br />Speech tells ‘what’ is being spoken.<br />Voice = Awaaz (Swar)<br />Speech = Shabd<br />
  5. 5. Project Objectives:<br />To design a hardware simulating software for a signal processing based password lock in the MATLAB environment. Hence, the software will be a simulation for hardware<br />To develop this software and train it to recognize the voice and a speech based password from two users.<br />Only the two authorized users (with matching voice and speech) would activate the lock mechanism and ‘open’ it.<br />Correspondingly 12 volt (dc) would be generated, which can be used to trigger any hardware based opening mechanism.<br />
  6. 6. Conceptual Diagram<br />MP3 to .WAV Converter<br />.WAV<br />Feature<br />extraction<br />Data-base<br />A<br />Yes<br />A<br />.WAV<br />Matching ?<br />B<br />Yes<br />B<br />A<br />B<br />No<br />12 volt dc<br />MP3 to .WAV Converter<br />Correlation<br />Or feature matching<br />Mic<br />No Voltage<br />System jam<br />Activation<br />Stop<br />(Thrice)<br />System reset<br />
  7. 7. Process Details<br />Either:<br /> In signal processing, cross-correlation is a measure of similarity of two waveforms as a function of a time-lag applied to one of them.<br />Or:<br /> Feature Extraction & Matching:<br /><ul><li> Pitch
  8. 8. Frequency
  9. 9. Zero Crossing Rate
  10. 10. Loudness
  11. 11. Energy
  12. 12. Voice-Unvoice</li></li></ul><li>Project Status<br />Work in progress…<br />
  13. 13. Thank you<br />MP3 to .WAV Converter<br />.WAV<br />Feature<br />extraction<br />Data-base<br />A<br />Yes<br />.WAV<br />Matching ?<br />B<br />Yes<br />B<br />A<br />No<br />12 volt dc<br />MP3 to .WAV Converter<br />Correlation<br />Mic<br />No Voltage<br />System jam<br />Activation<br />aStop<br />(Thricae)<br />System reset<br />

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