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Simultaneous Measurement of Impulse Response and Distortion with a Swept-Sine Technique

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TLDR
A novel measurement technique of the transfer function of weakly not-linear, approximately time-invariant systems is presented, based on an exponentially-swept sine signal, applicable to loudspeakers and other audio components, but also to room acoustics measurements.
Abstract
A novel measurement technique of the transfer function of weakly not-linear, approximately time-invariant systems is presented. The method is implemented with low-cost instrumentation; it is based on an exponentially-swept sine signal. It is applicable to loudspeakers and other audio components, but also to room acoustics measurements. The paper presents theoretical description of the method and experimental verification in comparison with MLS.

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Citations
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Energy-based calibration of virtual performance systems

TL;DR: In this article, the authors describe the process of calibrating a virtual performance system using energy-based quantities and verify this technique by comparing known acoustic quantities measured in a test space with a virtual version of the same space.
Proceedings ArticleDOI

Retrieving Vocal-Tract Resonance and anti-Resonance From High-Pitched Vowels Using a Rahmonic Subtraction Technique

TL;DR: A new cepstral method is developed combined with a refined rahmonic subtraction technique (RS-CEPS) to extract spectral envelopes excited by glottal noise sources and yields accurate estimates of resonance-peak and anti-resonance frequencies in comparison to those from the conventional methods.
Journal ArticleDOI

High-precision harmonic distortion level measurement of a loudspeaker using adaptive filters in a noisy environment

TL;DR: The proposed HDL measurement technique for a loudspeaker using an adaptive filter can measure HDL as accurately as spectral analysis using fast Fourier transform (FFT) and more accurately than spectral analysis in a noisy environment.
DissertationDOI

Análisis de la acústica de salas mediante la utilización de arrays de micrófonos circulares

Torres Aranda, +1 more
TL;DR: In this paper, a metodologia of analisis of salas basada en tecnicas de descomposicion de onda plana and de beamforming modal is presented.

On Distributed and Acoustic Sensing for Situational Awareness

Fangrong Peng
TL;DR: This thesis studies the potential optimality (or sub-optimality) of the energy detector in spectrum sensing and establishes the optimality of energy detector for several cooperative spectrum sensing systems and point out difficulties for the remaining cases.
References
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Journal Article

Aspects of MLS Measuring Systems

TL;DR: In this paper, the pathology of maximum length sequence (MLS) systems when there is distortion of various kinds is explored, and the properties of such a system are discussed in detail.
Journal Article

The stereo dipole : A virtual source imaging system using two closely spaced loudspeakers

TL;DR: In this article, a system comprising only two closely spaced loudspeakers can create very convincing virtual images around a single listener, and it is demonstrated that such a system is very robust with respect to head movement, and that the processing does not introduce any excessive artifacts.
Journal ArticleDOI

Acoustic measurements in opera houses: comparison between different techniques and equipment

TL;DR: The aim of this work is to define a tightly standardized measurement procedure for the collection of a complete objective description of an opera house's acoustics, and some of the results obtained after measurements made in three different halls are presented.
Journal Article

Software Implementation of an MLS Analyzer with Tools for Convolution, Auralization and Inverse Filtering

TL;DR: The paper describes a suite of software tools, which have been developed as extensions to the most diffused shareware program for waveform editing on Win-32 PCs (Cool Edit 96 by David Johnston).