Summer Internship Report: Acoustics Analysis and Room Equalization
Carl Blomqvist and Zacharias Hultman have worked on a Room Correction project at Lab Gruppen during summer 2019. The topic was "Acoustics analysis and room equalization: development of software tools for measurement, correction, and analysis of room acoustics". They developed a program for measuring room’s response and some analytical tools for evaluating the acoustic quality of a room.
Every room has a unique acoustics signature and a variety of distortions. Room acoustics’ software, like room correction, can be used to reduce these distortions and improve audio clarity. By altering the output of speakers to perform differently depending on the room, listening to the sound in that specific room can be a more pleasant experience.
They wrote their own program in Python for data collection, calibrated their instruments, performed room measurements, developed analytical tools and collected data for future analysis. They proved their initial hypothesis by creating a simple filter based on the data they analyzed, resulting in a definite improvement in the perceived sound quality in the room.
Room Correction with the use of Digital Signal Processing (DSP) is a very complex field. Carl is a computer science student and Zacharias is studying electrical engineering so they completed each other’s work. Their supervisors Amir Eghbali and Gustav Santesson, helped and guided them throughout the project.