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Download Audio Spectrum Analyzer docs - Car audio systems and stereo equipment, amplifiers, speakers, subwoofers, cd changer, mp3 player - Pioneer, Alpine, Sony, Kenwood, Clarion, JVC - service manuals and repair guides

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File name:Audio Spectrum Analyzer(En).pdf
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Audio Spectrum Analyzer


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Descr:Audio Spectrum Analyzer Diagram
Group:Electronics > Automobile > Audio >
Uploaded:2006-11-08 11:25:08
Multipart:No multipart

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Audio Spectrum Analyzer(En).pdfCircuit Design Project Page 1 PART I: INTRODUCE BLOCK DIAGRAM AND OPERATION THEORY I. Basic block diagram of audio spectrum analyzer: 1. Block diagram: Input Filter 1 VU-LED Circuit Filter 2 Display (n circuits) Filter n Basic block diagram of audio spectrum analyzer 2. Operation theory: Input signal comes into each filters. Filters are band pass filters. They only pass signals belonged to fixed frequency range and remove others. We can use transistor and discrete capacitors and resistors to make active filters or we can use OP-AMP and other passive device. The more filters, the higher frequency resolution of spectrum analyzer, shown as the higher quality of the circuit. VU-LED Circuit employed to display signal level behind filters. This kind of display circuit can be discrete devices or specific ICs. The more outputs, the higher resolution of amplitude. In the above diagram, we know that each filter needs and VU-LED circuit for display, the more filters (the higher frequency re

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