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Minor Project Presentation 1
 

Minor Project Presentation 1

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    Minor Project Presentation 1 Minor Project Presentation 1 Presentation Transcript

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