Audio Filter Project Neil E. Cotter Associate Professor (Lecturer) ECE Department University of Utah CONCEPT U AL TOOLS.

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Presentation transcript:

Audio Filter Project Neil E. Cotter Associate Professor (Lecturer) ECE Department University of Utah CONCEPT U AL TOOLS

Overview Goal: Build filter to pass low or high frequencies in audio signal Equivalent to bass/treble controls on MP3 player CONCEPT U AL TOOLS pedro-giraudo-jazz-orchestra--el-viaje.aspx dec/21/jazz-purist-found-wynton-marsalis mm-(1-4inch)-Plug-to-Plug/sub

Overview Goal: Build filter to pass low or high frequencies in audio signal Equivalent to bass/treble controls on MP3 player Each group of students will design/build low-pass filter (more bass) or high-pass filter (more treble) CONCEPT U AL TOOLS

Overview Goal: Build filter to pass low or high frequencies in audio signal Equivalent to bass/treble controls on MP3 player Each group of students will design/build low-pass filter (more bass) or high-pass filter (more treble) Theory first: Sound waves = sums of sinusoids (Fourier theory) Complex numbers can represent sinusoids (Phasors) Electronic components alter sinusoids— resistors, inductors, capacitors Filter design = sinusoid analysis (circuit theory) CONCEPT U AL TOOLS