Ch1-Introduction to DSP's

Ch1-Introduction to DSP's - Microcomputer Systems 1...

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Microcomputer Systems 1 Introduction to DSP’s
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2/11/12 Veton Këpuska 2 Introduction to DSP’s u Definition: n DSP  – Digital Signal Processing/Processor n It refers to: u Theoretical signal processing by digital means ( subject  of  ECE3222, ECE3541),  u Specialized hardware (processor) that can process signals in  u This class’s focus is on: n Hardware Architecture of a real-world DSP platform n Software Development on DSPs, and n Applied Signal Processing theory and practice.
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2/11/12 Veton Këpuska 3 Introduction to DSP’s u DSP’s  process  signals u Signal  – a  detectable   physical quantity   or impulse (as a voltage, current, or  magnetic field strength) by which  messages or  information  can be  transmitted (Webster Dictionary)
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2/11/12 Veton Këpuska 4 Introduction to DSP’s u Signal Characteristics: n Signals are Physical Quantities: n Signals are Measurable  n Signals are Analog n Signals Contain Information. u Examples: n Temperature [oC] n Pressure [Newtons/m2] or [Pa] n Mass [kg] n Speed [m/s] n Acceleration[m/s2] n Torque [Newton*m] n Voltage [Volts] n Current [Amps] n Power [Watts] u In this class, analog signals are electrical. n Sensors: are devices that convert other physical quantities (temperature, pressure, etc.) to  electrical signals. 
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Signal and Systems Introduction to Signals and  Systems
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2/11/12 Veton Këpuska 6 Introduction to Signals and Systems u Introduction to Signals and Systems as  related to Engineering n Modeling of physical signals by  mathematical functions n Modeling physical systems by  mathematical equations n Solving mathematical equations when  excited by the input functions/signals.
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2/11/12 Veton Këpuska 7 Modeling u Engineers model two distinct physical  phenomena: 1. Signals  are modeled by  mathematical  functions . 2. Physical systems  are modeled by  mathematical equations .
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What are Signals?  2/11/12 Veton Këpuska 8
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u Signals ,   x(t),  are typically real functions of  one independent variable that typically  represents time ;   t .
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Ch1-Introduction to DSP's - Microcomputer Systems 1...

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