Project

# Title Team Members TA Documents Sponsor
79 Voice Dosimeter for Voice Therapy
 David Gong
Jaden Li
Michael Rizk
 Chi Zhang proposal1.pdf
# Voice Dosimeter for Voice Therapy

Team Members:
- David Gong (dsgong3)
- Jaden Li (sizhel2)
- Michael Rizk (rizk2)

# Problem

The US societal costs of voice-related teacher absenteeism and treatment expenses alone have been estimated to be as high as 2.5 billion dollars annually. Such absenteeism could be prevented if teachers were able to measure how much they were using and straining their voices every day. Furthermore, there are currently no commercially available voice dosimeters. Some devices were available in the past, but they cost thousands of dollars. A low-cost and widely available voice dosimeter would allow for clinical and research use of voice-related problems and voice therapy options.

This project will be conducted in collaboration with graduate student Charlie Nudelman and Professor Pasquale Bottalico at the College of Applied Health Sciences. Their group had previously developed a DIY voice dosimeter using a contact microphone and a portable audio recorder. They are still using this device today, but there are a few improvements they would like to see.

# Solution

The device that Charlie and Pasquale are using is bulky and requires a wired connection. It is impractical for patients to wear daily and collect data for a long period of time. We aim to create a cheaper and more comfortable voice dosimeter that is capable of recording data for long periods of time without recharging while the data can be uploaded to another device wirelessly.

# Solution Components

## Sensor System
Accelerometer: Low power and need bandwidth of at least 3kHz (BMA580)
Medical Tape
Silicone enclosure

## Microcontroller
Microcontroller: SOC with BLE low power consumption (NRF52832-QFAB-R)

## Data Processing and User Interface
The recorded data is collected and uploaded to a device through bluetooth. This data is then processed to extract information about sound pressure level, fundamental frequency, and cepstral peak. Finally, this data can be viewed either through a website or an app.

## Power
Battery: enough power to last 8 hours given MCU, power consumption estimate
- Either a small rechargeable battery, or a button cell battery that can be replaced
PMIC: TPS65720EVM-515

# Criterion For Success
- Design a device that costs less than $200
- Accurately measure within some uncertainty compared to a microphone measurement in a quiet room: sound pressure level within 2dB, fundamental frequency within 5Hz, cepstral peak within 2dB
- Reject external noise and voices by at least 20 dB compared to the wearer’s voice.
- At least 8 hours of battery life

## Secondary Objective
- Cloud integration

Logic Circuit Teaching Board

Younas Abdul Salam, Andrzej Borzecki, David Lee

Featured Project

Partners: Younas Abdul Salam, Andrzej Borzecki, David Lee

The proposal our group has is of creating a board that will be able to teach students about logic circuits hands on. The project will consist of a board and different pieces that represent gates. The board will be used to plug in the pieces and provide power to the internal circuitry of the pieces. The pieces will have a gate and LEDs inside, which will be used to represent the logic at the different terminals.

By plugging in and combining gates, students will be able to see the actual effect on logic from the different combinations that they make. To add to it, we will add a truth table that can be used to represent inputs and outputs required, for example, for a class project or challenge. The board will be able to read the truth table and determine whether the logic the student has created is correct.

This board can act as a great learning source for students to understand the working of logic circuits. It can be helpful in teaching logic design to students in high schools who are interested in pursuing a degree in Electrical Engineering.

Please comment on whether the project is good enough to be approved, and if there are any suggestions.

Thank you