Minor Project Presentation 1Presentation 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:
Zero Crossing Rate
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