Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 34 | SELF ADJUSTING VOLUME PEDAL |
Chris Jurczewski Noah DuVal Norbert Lazarz |
Nithin Balaji Shanthini Praveena Purushothaman | design_document2.pdf final_paper1.pdf photo3.jpg photo1.jpg presentation1.pdf proposal2.pdf |
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| Team Members: - nlazarz2 - nbduval2 - cmj7 # Problem One problem with adjusting volume manually is that it's tedious and often causes changes in the tone of the amp. Another problem this poses is during live performances, when you would like guitars to be less or more prominent when playing different songs, there is no way for the player themselves to adjust themselves without relying on someone mixing during their set. Volume is also room dependent so changing locations will result in the volume being changed which can often be unwanted. # Solution To solve these problems we propose a pedal that will adjust the volume of the amp’s output depending on the chosen decibel setting located on the pedal. This project will have two subsystems that will work together to collect, process, and alter the output of the amp. The first subsystem is the pedal itself which will allow the user to select the desired dB setting they would like to hear. The second is the microphone attachment to the guitar which will collect auditory data from the amp and transmit it wirelessly to the pedal. After the pedal receives the signal it will filter out the unnecessary frequencies and bring the volume of the signal up to the preset number and keep that volume wherever the player is. # Solution Components ## Pedal Subsystem The pedal itself will contain the main PCB which will be in charge of taking in readings from microphones on the guitar. The microcontroller will then be programmed to filter the audio so there is as little noise as possible and will not consider frequencies outside a guitar’s range. It will then use these readings to determine the level of volume it tells the amp to output. This will be determined by averaging the sound over a certain period of time and bringing it up to the preset number on the pedal depending on the distance of the player. - Possibly looking at using the ESP32-S3 Microcontroller due to its built in wifi and bluetooth capabilities that we would like to use to communicate between the microphone and custom pcb - A multitude of resistors, capacitors and OpAmps to create an analog noise filter before the digital filter to remove general ambient noise. - A 4.4mm jack is needed to connect the pedal to a guitar/amp ## Guitar Subsystem On the front and back of the guitar will be wireless microphones that will pick up the outgoing sound from the amp and will send it to the first subsystem to be used for filtering and calculations. - Will require some form of bluetooth microphone that will connect to the pedal - Will need some form of external power and a way to easily attach and detach from a guitar # Criterion For Success - Audio is noticeably changed by the varying distance between player and amp - Audio stays consistent for player and does not jump or stutter - Audio does not change tone or effects created by other pedals or amp presets - Pedal is not affected by frequencies outside it’s set range (80-1500 Hz) -Internal components are relatively inexpensive |
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