Abstract
Locating a sound source in an indoor environment, e.g., a noise source, is difficult just based on human listening. While acoustic cameras with multiple microphone arrays can be used to locate the sound source, such equipment is expensive and unsuitable for many use cases. This disclosure describes techniques to identify the location of a sound source using a single built-in microphone and inertial measurement unit (IMU) sensor on a user device. Device motion and velocity data is obtained from the IMU. A baseline is established by recording sound without user movement to determine the frequency domain of sound. The user is prompted to record the sound again by moving the device in a particular direction and frequency shifts in the measured sound are detected to determine a direction of the sound source relative to the device location. The process is repeated at one or more additional locations. The intersection of the direction lines from the device locations to the noise source gives the location of the noise source.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Chuang, PC; Lau, UiLiong (Will); and Chung, Vincent, "Locating a Sound Source Using Single Microphone and Inertial Measurements", Technical Disclosure Commons, (December 19, 2023)
https://www.tdcommons.org/dpubs_series/6505