Loudspeaker localization using B-format recordings

Date

2003-01-01

Author

Günel Kılıç, Banu

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

148
views

0
downloads

Positions of loudspeakers with respect to the listener play an important role in loudspeaker reproduction. When the listener is outside the sweet spot, one of the loudspeakers becomes dominant decreasing the reproduction fidelity. Compensation of the time and level differences between the loudspeakers is possible if the positions of the loudspeakers can be detected automatically. This paper proposes a method to determine the loudspeaker positions with respect to the listener using B-format recordings captured at the position of the listener. Loudspeaker localization is based on calculating impulse responses using the original played sounds and altering the pointing direction of the cardioids generated from B-format recordings. The analysis provides very accurate distance estimation and direction estimation with an error of 12 degrees on average.

Subject Keywords

Loudspeakers, Cardiology , Sensor arrays, Microphone arrays, Signal generators, Art , Computer science, Estimation error, Degradation , Eigenvalues and eigenfunctions

URI

https://hdl.handle.net/11511/32412

DOI

https://doi.org/10.1109/aspaa.2003.1285819

Collections

Graduate School of Informatics, Conference / Seminar

Suggestions

OpenMETU
Core

SOUND SOURCE LOCALISATION PERFORMANCE OF OPEN SPHERICAL ACOUSTIC INTENSITY PROBES UNDER REVERBERANT CONDITIONS Hacıhabiboğlu, Hüseyin (2014-04-25) Open-spherical acoustic intensity probes are microphone arrays based on the Kirchhoff-Helmholtz integral and are used in the measurement of active acoustic intensity. The acoustic intensity measurements obtained by these arrays can be used to localise sound sources. Previously, the performance of these arrays in acoustic free field conditions were obtained using numerical simulations and it was shown that they provide better performance than other types of probes. This paper discusses the implementation of ...
Panoramic recording and reproduction of multichannel audio using a circular microphone array Hacıhabiboğlu, Hüseyin (2009-10-18) Multichannel audio reproduction generally suffers from one or both of the following problems: i) the recorded audio has to be artificially manipulated to provide the necessary spatial cues, which reduces the consistency of the reproduced sound field with the actual one, and ii) reproduction is not panoramic, which degrades realism when the listener is not seated in a desired ideal position facing the center channel. A recording method using a circularly symmetric array of differential microphones, and a rep...
Spherical harmonics based acoustic scene analysis for object-based audio Çöteli, Mert Burkay; Hacıhabiboğlu, Hüseyin; Department of Information Systems (2021-2-19) Object-based audio relies on elemental audio signals from individual sound sources and their associated metadata to be reconstructed at the listener side. While defining audio objects in a production setting is straightforward, it is not trivial to extract audio objects from more realistic recording scenarios such as concerts. Thus, existing object-based audio standards also define scene-based formats alongside objectbased representations that provide immersive audio, but without the flexibility provided by...
ACOUSTIC SOURCE SEPARATION USING RIGID SPHERICAL MICROPHONE ARRAYS VIA SPATIALLY WEIGHTED ORTHOGONAL MATCHING PURSUIT Coteli, Mert Burkay; Hacıhabiboğlu, Hüseyin (2018-09-20) Acoustic source separation refers to the extraction of individual source signals from microphone array recordings of multiple sources made in multipath environments such as rooms. The most straightforward approach to acoustic source separation involves spatial filtering via beamforming. While beamforming works well for a few sources and under low reverberation, its performance diminishes for a high number of sources and/or high reverberation. An informed acoustic source separation method based on the applic...
Thin-Film PZT based Multi-Channel Acoustic MEMS Transducer for Cochlear Implant Applications Yüksel, Muhammed Berat; Külah, Haluk (2021-01-01) AuthorThis paper presents a multi-channel acoustic transducer that works within the audible frequency range (250-5500 Hz) and mimics the operation of the cochlea by filtering incoming sound. The transducer is composed of eight thin film piezoelectric cantilever beams with different resonance frequencies. The transducer is well suited to be implanted in middle ear cavity with an active volume of 5 mm × 5 mm × 0.62 mm and mass of 4.8 mg. Resonance frequencies and piezoelectric outputs of the bea...

Citation Formats

B. Günel Kılıç, “Loudspeaker localization using B-format recordings,” 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32412.