Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 71 | Digital Theremin with LED |
Chawakorn Wichulada Juan Chapa Phong Che |
Jose Sanchez Vicarte | appendix0.pdf design_document0.pdf final_paper0.pdf presentation0.pptx proposal0.pdf |
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| UPDATE Problem: The digital theremin needs to be an actual musical instrument that will provide more rich and distinct sounds with broader frequencies and dynamics. ECE 395 has a working prototype digital theremin (a sensor, audio output, and programmable chip) but is far from sounding instrumental and lacks unique features. Solution: We will revise the design of the theremin to have two distance sensors for detecting the left and right hand’s distance away from the sensors. We will also be adding new features such as waveform generator, LED array manipulation, and incorporate new volume control technique. Description: The two sensors will be place one on the left hand side of the instrument and the other one will be placed on the right hand side. In doing so we can create a wider range of frequency corresponding to each sensor for high or low pitches. We will create a combine module that will average the two sensors input if both are used. Afterwards we will incorporate new volume control technique by having a foot pedal to control the volume within an amplitude range of the sound. On the other hand, we will also have a volume knob which will control the maximum amplitude range achievable by the foot pedal. A kill switch is an addition technique we would like to have that is commonly found in electric guitar that will create a special sound effect. The frequency will then be pass to the waveform generator which can be control by switches to select different waves such as square, sawtooth, sinusoidal, etc ... The wave will be output to the audio output to be played by the speaker. An amplifier will be added if necessary to increase the volume sound. Furthermore, the waveform generator will go through an analog digital converter to be read by the microcontroller in order to process the note that is being played. Once a note has been found, the output will be sent to the LED array to light up the LED corresponding to that note. The whole device is powered by a power supply drawing power from an adapter connecting to the wall. Testing: We will use an instrument tuner to test for the frequencies that the instrument plays. We will isolate most of the component and test individually such as the LED array by feeding it specific signals and checking for correct lighting. Members: Phong Che (pche3) Juan Chapa (jachapa2) Chawakorn Wichulada (wichula2) |
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