S18: Audio Spectrum Analyzer with Graphics Display

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Grading Criteria

  • How well is Software & Hardware Design described?
  • How well can this report be used to reproduce this project?
  • Code Quality
  • Overall Report Quality:
    • Software Block Diagrams
    • Hardware Block Diagrams
      Schematic Quality
    • Quality of technical challenges and solutions adopted.

Project Title

Audio Spectrum Analyzer with Graphics Display

Abstract

This sound box is going to use an RGB LED-matrix to display graphics base on the MP3 audio frequencies and an MP3 decoder chip will be used to connected to the SJOne board with MP3 files in its SD card to decode audio and send to DAC which is connected to our speakers. The user will be able to see graphics on the RGB LED matrix instantly while playing MP3 files, see the playlist and status of the music on another LCD display, and have some control buttons to control the sound box.

Objectives & Introduction

Show list of your objectives. This section includes the high level details of your project. You can write about the various sensors or peripherals you used to get your project completed.

Team Members & Responsibilities

  • Lorenzo Javier
  • Jason Lin
  • Bohan Liu

Schedule

Show a simple table or figures that show your scheduled as planned before you started working on the project. Then in another table column, write down the actual schedule so that readers can see the planned vs. actual goals. The point of the schedule is for readers to assess how to pace themselves if they are doing a similar project.

Week# Ending date Task Actual
1 4/15 Order all Components. Completed
2 4/22 Interface Audio Analyzer and able to use 3.5mm audio cable as input and splits it into seven bands. In Progress
3 4/30 Able to read MP3/Audio file from SD card.

Write the SPI driver to communicate with the MP3 decoder. Be able to play MP3/Audio file with speakers as output. Design the basic board layout

In Progress
4 5/7 Able to use MP3 driver to decode MP3/Audio file and send it to Audio Analyzer.

Modify board layout Print PCB.

Not started
5 5/14 Interface RGB LED Matrix's as graphic equalizer.

Implement control funcitons for sound box control.

Not started
6 5/21 Test and debug.

Finish project report & Demo on 5/22.

Not started

Parts List & Cost

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Design & Implementation

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Hardware Design

Discuss your hardware design here. Show detailed schematics, and the interface here.

Hardware Interface

In this section, you can describe how your hardware communicates, such as which BUSes used. You can discuss your driver implementation here, such that the Software Design section is isolated to talk about high level workings rather than inner working of your project.

Software Design

Show your software design. For example, if you are designing an MP3 Player, show the tasks that you are using, and what they are doing at a high level. Do not show the details of the code. For example, do not show exact code, but you may show psuedocode and fragments of code. Keep in mind that you are showing DESIGN of your software, not the inner workings of it.

Implementation

This section includes implementation, but again, not the details, just the high level. For example, you can list the steps it takes to communicate over a sensor, or the steps needed to write a page of memory onto SPI Flash. You can include sub-sections for each of your component implementation.

Testing & Technical Challenges

Describe the challenges of your project. What advise would you give yourself or someone else if your project can be started from scratch again? Make a smooth transition to testing section and described what it took to test your project.

Include sub-sections that list out a problem and solution, such as:

<Bug/issue name>

Discuss the issue and resolution.

Conclusion

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Project Video

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Project Source Code

References

Acknowledgement

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References Used

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Appendix

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