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Team #1

Kahnec De La Torre – Lead Report Manager BSEE – Programming and Wireless Networking Mike Haynes – Lead Manufacturing Manager BSEE – VHDL Bounnong Khamphoumy – Lead Project Integrator BSEE – Electronics Jason Knedlhans – Lead System Designer BSEE – Audio

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Team #1

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  1. Kahnec De La Torre – Lead Report Manager BSEE – Programming and Wireless Networking Mike Haynes – Lead Manufacturing Manager BSEE – VHDL Bounnong Khamphoumy– Lead Project Integrator BSEE – Electronics Jason Knedlhans – Lead System Designer BSEE – Audio Joseph Spitz – Lead Presentation Manager BSEE – Cacophonic Electronics EE595 Capstone Design Team #1

  2. Resource Comparison Time Resources • 780 Resource Hours • 12 hrs/week • Initial Estimates • 845 Resource Hours • Mid-Semester Estimate • 8.33% increase Monetary Resources • $250 • $50 per team member • $228 • Mid-Semester Estimate • 9.65% decrease

  3. Selected Project • A musical instrument • New variation on synthesizer • Mounted like a keyboard or upright like a cello • Enables user to produce varied sounds • Digital Effects including echo, auto-wah, and distortion • Analog overdrive effects • Continuously variable frequency selector • Requires both hands to play

  4. The i1 Volume Continuous Frequency Selector DSP Status Analog And Digital Control Analog Effects & DSP Effects Toggles

  5. The i1 Analog Comparison System Frequency Selector Attack / Decay Control Summing Amp Low Freq Oscillator Signal Routing Digital Controls Analog Audio Analog Controls Analog Control DSP State Serial 16 bit Digital Digital Control Analog Audio Output Analog Effects DSP Processor Power Supply Pre Amp Joe Mike Kahnec Filter DAC Jason Bounnong

  6. Standard Requirements Market • Economic • Total Market Size: $200,000 • Estimated Annual Volume: 100 • Minimum List Price: $2,000 • Maximum Product Material Cost: $250 • Maximum Production Cost: $200 • Marketing • Market Geography: Global • Market Demography: Musicians – Age 13 and up • Competitors: Roland, Yamaha, Tascam

  7. Standard Requirements Environment Storage Duration: 1 Year

  8. Standard Requirements Electrical & Life Cycle

  9. Standard Requirements Mechanical • Maximum Dimensions: 30.5 x 10.2 x 76.2 cm • Maximum Product Mass: 5 kg • Maximum Number of PCBs: 2 • Maximum PCB Area: 465 cm2

  10. Performance Requirements User Inputs • Frequency Selector • Continuously variable selection • Frequency range of 1.5 octave per selector • Distance between chromatic notes between 2 and 5 cm • Multiple Tap Selectors • Selectable effects processing • Patch synthesized audio through effect or bypass • Analog Potentiometers • To control output amplitude • To set amplitude attack • To set amplitude decay

  11. Performance Requirements User Indicators & Displays • Displays • DSP effect state indicator – three digits • Level of effect applied • LED Indicators • System on/off state • Analog effect state

  12. Performance Requirements Electrical Output Interface • ¼ inch Jack • 1000 Ohm impedance • Less than 2 volt output magnitude • Less than 1% THD • 20 to 20kHz frequency range

  13. Performance Requirements Modes of Operation Any Combination of Analog and Digital Effects • Digital Effects • On/off • Effect • Echo • Distortion • Auto-Wah • Effect intensity • Effect parameter • Analog Effect • On/off • Adjustable overdrive intensity

  14. Requirements Maximum surface temperature is less than 40oC Low potential on exposed surfaces < .01 μV Standards UL 469 Musical Instruments and Accessories UL 1310 Class 2 power units UL 1998 Software in Programmable Components UL 486 Wire Connectors Safety Requirements & Standards

  15. EMC Standards

  16. Analog Effects & Preamp Kahnec De La Torre

  17. The Instrument Analog Comparison System Frequency Selector Attack / Decay Control Summing Amp Low Freq Oscillator Signal Routing Digital Controls Analog Audio Analog Controls Analog Control DSP State 16 bit Digital Audio 16 bit Digital Control Analog Audio Output Analog Effects Processor Including ADC & Memory Power Supply Pre Amp Joe Mike Kahnec Filter DAC Jason Bounnong

  18. Analog Effects & Preamp Functional Description Analog Effects • Provides additional sound effects through analog circuit • Operates over 3 decade range (20 to 20kHz) Preamp • Volume is controlled at the user interface

  19. Analog Effects & Preamp Block Diagram Audio Effect in From Signal Router Analog Control Attenuator Attenuator Vacuum Tube preamp Analog Signal to Signal Router Preamp in from Signal Router Preamp Passive Noise Filter Volume Control

  20. Preamp Volume Control

  21. Analog Effects Circuit

  22. Analog Effects & Preamp Block Requirements

  23. Analog Effects & Preamp Block Requirements Cont.

  24. Analog Effects & Preamp Block Requirements Cont.

  25. Analog Effects & Preamp Block Requirements Cont.

  26. Analog Effects & Preamp Block Signal Table

  27. The 12AX7 Vacuum Tube Consider buying pre-tested tubes. Or must test tubes prior to assembly. Analog Effects & Preamp Manufacturing and Testing Considerations

  28. Analog Effects & Preamp DFM Plan Mandatory Tasks Recommended Tasks

  29. Analog Effects & Preamp Passive Component Specifications Mandatory Tasks Recommended Tasks

  30. Analog Effects & Preamp Passive Components Specs. Cont. Mandatory Tasks Recommended Tasks

  31. Analog Effects & Preamp PCB Layout Pot Pot 12AX7 Vacuum Tube LM833 op amps 528 cm2

  32. Analog Effects & Preamp Prototype Plan

  33. Analog Effects & Preamp Block Task/Resources Estimate • Resource hours to be invested after 10/11/2005 • 122 hours • Monetary Investment • $30

  34. Digital Effects Jason Knedlhans

  35. The i1 Analog Comparison System Frequency Selector Attack / Decay Control Summing Amp Low Freq Oscillator Signal Routing Digital Controls Analog Audio Analog Controls Analog Control DSP State 16 bit Digital Audio 16 bit Digital Control Analog Audio Output Analog Effects DSP Processor Power Supply Pre Amp Joe Mike Kahnec Filter DAC Jason Bounnong

  36. Digital Effects Functional Description • Allows user to add digital audio effects to the original audio signals created by oscillators • Converts analog audio signal to a digital signal • Applies digital effects • Distortion • Echo • Auto Wah • Audio is then converted to an analog signal for final output stage.

  37. Digital Effects Block Description Analog Input ± 5V Antialiasing Filter DSP Processor ADC Digital Controls ADC ADC DAC Serial Analog Output Serial DSP State ± 5V Audio Filter Memory

  38. Digital Effects Block Requirements

  39. Digital Effects Block Requirements Cont.

  40. Digital Effects Block Requirements Cont.

  41. Digital Effects Block Requirements Cont.

  42. Digital Effects Analog DFM Plan Required

  43. Digital Effects Analog DFM – Discrete Components

  44. Digital Effects Digital DFM – DC Drive Analysis Table

  45. Digital Effects Digital DFM – Timing Analysis Table

  46. Digital Effects Block Signal Table

  47. Low-Frequency Oscillator Michael Haynes

  48. The i1 Analog Comparison System Frequency Selector Attack / Decay Control Summing Amp Low Freq Oscillator Signal Routing Digital Controls Analog Audio Analog Controls Analog Control DSP State 16 bit Digital Audio 16 bit Digital Control Analog Audio Output Analog Effects Processor Including ADC & Memory Power Supply Pre Amp Joe Mike Kahnec Filter DAC Jason Bounnong

  49. Low Frequency Oscillator Functional Description • Receives a DC input and outputs an AC voltage • By using a Voltage-controlled Oscillator (VCO), the DC input can control the output frequency • An analog comparison system is used to ensure that no transients are heard after releasing pressure on the main interface

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