+ Professor Richard Mann will be giving a talk, titled "Open Source + Software for Sound Measurement and Analysis". He will be presenting + information about his new course, CS 489, Computational Sound, which + will be running in Winter 2017. +
+
+ Professor Richard Mann will be giving a talk, titled "Open Source
+ Software for Sound Measurement and Analysis". He will be presenting
+ information about his new course, CS 489, Computational Sound, which
+ will be running in Winter 2017. The abstract for this talk is below.
+
+
+ The most common problem in acoustics is to measure the frequency + response of an (expensive!) listening room. While specifications + exist for the amplifiers, speakers, etc, each system must be still + evaluated individually, since the frequency response depends on the + direct sound from the speaker(s), the listener position and the + reverberation of the room. The user may spend considerable time + adjusting the speaker placement, the system equalization, and + possibly treating the room to get the best response. +
++ There are several commercial and freeware applications for this task, + some of which are very good. However, to learn the methods the user + must understand the processing involved. +
++ The purpose of this talk is to present an open source solution. Our + system is based on a very few lines of code, written in GNU Octave, a + Matlab(r) workalike that runs under Linux, Windows and Mac. +
++ The program works by playing a known test signal, such a tone, or + some kind of noise source out of the sound card into the system. The + system is measured by comparing driving signal to that measured by a + microphone in the room. The frequency response is computed using the + Discrete Fourier Transform (DFT). +
++ This is joint work with Prof. John Vanderkooy, Physics, University of + Waterloo. +
+