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DSP (digital signal processing)

DSP (digital signal processing). (DSP ) deals with commonly signals such as speech, music, video, EKG or ECG (heart), and EEG (brain). Applications of DSP. Signal transmission /storage/retrieval. Information extraction . Speech ,image and character recognition.

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DSP (digital signal processing)

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  1. DSP (digital signal processing) (DSP) deals with commonly signals such as speech, music, video, EKG or ECG (heart), and EEG (brain).

  2. Applications of DSP Signal transmission /storage/retrieval Information extraction Speech ,image and character recognition Speech coding , music coding, data compression communication over noisy channels Radar and sonar signal processing

  3. Preparing the analog signal for communication through a communication channel

  4. Analyzing the analog signal for use in a voice recognition telephone system.

  5. DSP block diagram SIGNALS, SYSTEMS, AND SIGNAL PROCESSING A signal is defined as any physical quantity that vary with time or any independent variables A system may also be defined as a physical device that performs an operation on a signal A Signal processing is the operations that performed on the signal means processed the signal.

  6. Classification of signals:- • Multi channel and multi dimension signals • Continuous Time versus Discrete Time Signal • Continuous – Valued versus Discrete – Valued Signals • Deterministic signal and Random signal

  7. Analog-To-Digital convertor • Sampler • Quantization • Coding.

  8. Sampling of analog signal This is the conversion of a continuous-time signal into discrete-time signal obtained by taking samples of the continuous-time signal at discrete-time instant

  9. The sampling theorem introduced by Nyquist and later by Shannon is used to determine the appropriate sampling rateFs≥2Fmax

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