Phased Array Microphones
Project Overview
Many applications require amplification of audio – large classrooms, music venues, theater production, film. Often, in these applications, complicated wired microphones or multiple expensive wireless systems are used. In either of these instances, system configuration is difficult and expensive. Within a phased array system, it is possible to use an array of centrally located microphones that can be tuned to amplify a targeted location based on the arrival of sound to the system. Such systems have been used in military applications (e.g. submarine detection). The goal of this project is to develop a low-cost system to be implemented in a classroom or theater setting to enable spotlight-style amplification of noise using a remote, phased array microphone system.
Objectives
- Automate and Optimize Phased Array System Algorithm
- Innovate Hardware to Run Through Custom Analog to Digital Conversion Interface
- Run Data Analysis through Frequency & Sound Based Information
Major Tasks
The major tasks of the project are outlined below. These are nominal and are likely to change somewhat throughout the course of the year. These are meant to illustrate the general nature of the work that the position entails.
- Use Python to Generate and Analyze Audio Signal Data
- Test and Optimize Phased Array Algorithm
- Develop Analog to Digital Audio Interface Preamplifier / Hardware
- Analyze Live Demo Recordings Through Rigorous Testing
- Design and 3D Print Chassis of Hardware and Microphone System
Open Positions
Preferred Skills and Interests
- Good communication, writing, and presentation skills, punctuality
- Excitement for research and development of larger goal-based objectives!
- Python/Java/Misc Coding
- Theater, performing arts, music
- Arduino/PI/MCUs/FPGA
- Microphonics/Ultrasonics/Piezoelectrics/Signals
Preferred Academic Years
- Looking for Sophomore/Junior/Senior level students
Preferred Majors
- EE
- CS / CMDA
- Theater, Performing Arts, Music
- ME
- ISE
- HCI
As a side note, these are preferred! Even if you do not fit or understand every piece on here, having an open and willing ability to learn and grow is really what we are looking for. This coming semester is heavily centered on hardware design and refining an algorithm script created during the previous semester of research, so having skills in either boat is a great addition.
How to Apply
This project is administered through the IDPro course in the ENGE department of Virginia Tech. Interested students should apply through the IDPRo interest form.
For more information on IDPro, please visit the IDPro website at – https://idproenge.wp.prod.es.cloud.vt.edu/
Please reach out to Dr. Gray (dagray3@vt.edu) if you have any questions or concerns.