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All Outputs (57)

Profiling the distortion characteristics of commercial music using amplitude distribution statistics (2005)
Presentation / Conference
Wilson, A., & Fazenda, B. (2005, October). Profiling the distortion characteristics of commercial music using amplitude distribution statistics. Presented at Reproduced Sound 30, Birmingham, UK

As digital audio is encoded as discrete samples of the audio waveform, much can be said about the nature of the recording by the statistical properties of the sample distribution. By analysis of the probability mass function and associated summary fe... Read More about Profiling the distortion characteristics of commercial music using amplitude distribution statistics.

Measurement of sound quality for critical listening (2005)
Presentation / Conference
Fazenda, B., Holland, K., & Newell, P. (2005, July). Measurement of sound quality for critical listening. Presented at 12th International Congress on Sound and Vibration, Lisbon

For the critical assessment of music recordings the uniformity of the pressure amplitude response with respect to frequency has robustly been defended as one of the principals of prime importance for any electro-acoustic monitoring system. This has b... Read More about Measurement of sound quality for critical listening.

Perception of low frequencies in small rooms (2004)
Presentation / Conference
Fazenda, B., & Avis, M. (2004, September). Perception of low frequencies in small rooms. Presented at IV Congreso Ibero-Americano de Acustica, Guimaraes, Portugal

Critical listening rooms are spaces carefully designed to provide the listener with an accurate listening environment. It is well known that in small rooms, resonances may occur that will cause some amplification or attenuation of sound at certain fr... Read More about Perception of low frequencies in small rooms.

Difference limen for the Q-factor of room modes (2003)
Presentation / Conference
Fazenda, B., Avis, M., & Davies, W. (2003, October). Difference limen for the Q-factor of room modes. Presented at 115th Audio Engineering Society Convention, Jacob K. Javits Convention Center, New York, NY, USA

A subjective test study was carried out in order to identify the perceptibility of changes in the Q-factor of room modes. The experimental technique concentrates on the identification of difference limen for three levels of Q-factor referring to mode... Read More about Difference limen for the Q-factor of room modes.

Low frequency room excitation using distributed mode loudspeakers (2002)
Presentation / Conference
Fazenda, B., Avis, M., & Davies, W. (2002, June). Low frequency room excitation using distributed mode loudspeakers. Presented at 21st Audio Engineering Society Convention, Saint Petersburg, Russia

Conventional pistonic loudspeakers excite the modes of an enclosed sound field in such a way as to introduce modal artefacts which may be problematic for listeners to high-quality reproduced sound [1]. Their amelioration may involve the use of high... Read More about Low frequency room excitation using distributed mode loudspeakers.

Internal acoustic design for a multi-channel control room - measurement and perception (2002)
Presentation / Conference
Fazenda, B., & Angus, J. (2002, January). Internal acoustic design for a multi-channel control room - measurement and perception. Presented at Institute of Acoustics

As an extension to their academic teaching facilities, the School of Acoustics and Electronic Engineering at the University of Salford commissioned a set of studios to be used for various audio technology modules. In the main control room, facilities... Read More about Internal acoustic design for a multi-channel control room - measurement and perception.

The views of recording studio control room users (2001)
Presentation / Conference
Fazenda, B., & Davies, W. (2001, January). The views of recording studio control room users. Presented at Institute of Acoustics

A study was carried out in order to identify common language, views and preferences of professionals using audio control rooms. This was done as part of current research on the design of Control Rooms for critical listening. The survey took the form... Read More about The views of recording studio control room users.

The psychoacoustic effects of stimuli plausibility on headphone externalisation
Presentation / Conference
Fazenda, B., & Newton, J. The psychoacoustic effects of stimuli plausibility on headphone externalisation. Presented at Reproduced Sound 2014, NEC, Birmingham

In the world we live in, sound events are typically associated with a physical event happening within our surroundings. In this case, the event carries a degree of plausibility in that it exists in the physical world and should therefore have associa... Read More about The psychoacoustic effects of stimuli plausibility on headphone externalisation.

WaveCloud : an open source room acoustics simulator using the finite difference time domain method
Presentation / Conference
Sheaffer, J., & Fazenda, B. WaveCloud : an open source room acoustics simulator using the finite difference time domain method. Presented at Forum Acusticum 2014, Krakow, Poland

Among the various wave-based simulation methods, the finite difference time domain (FDTD) method provides a good trade-off between applicability, accuracy and computational efficiency. With the growing availability of computing power and recent advan... Read More about WaveCloud : an open source room acoustics simulator using the finite difference time domain method.

Perception & evaluation of audio quality in music production
Presentation / Conference
Wilson, A., & Fazenda, B. Perception & evaluation of audio quality in music production. Presented at 16th International Conference on Digital Audio Effects (DAFx-13), Maynooth, Ireland

A dataset of audio clips was prepared and audio quality assessed by subjective testing. Encoded as digital signals, a large amount of feature-extraction was possible. A new objective metric is proposed, describing the Gaussian nature of a signal’s a... Read More about Perception & evaluation of audio quality in music production.

A physically-constrained source model for FDTD acoustic simulation
Presentation / Conference
Sheaffer, J., Walstijn, M., & Fazenda, B. A physically-constrained source model for FDTD acoustic simulation. Presented at 15th International Conference on Digital Audio Effects (DAFx-12), York, UK

The Finite Difference Time Domain (FDTD) method is becoming increasingly popular for room acoustics simulation. Yet, the literature on grid excitation methods is relatively sparse, and source functions are traditionally implemented in a hard or addit... Read More about A physically-constrained source model for FDTD acoustic simulation.

Recreating the sound of Stonehenge
Presentation / Conference
Fazenda, B., & Drumm, I. Recreating the sound of Stonehenge. Presented at Acoustics of Ancient Theatres, Patras, Greece

Stonehenge is the largest and most complex ancient stone circle known to mankind. In its original form, the concentric shape of stone rings would have surrounded an indi-vidual both visually and aurally. It is an outdoor space and most archaeological... Read More about Recreating the sound of Stonehenge.

Motor current signal analysis using a modified bispectrum for machine fault diagnosis
Presentation / Conference
Gu, F., Shao, Y., Hu, N., Fazenda, B., & Ball, A. Motor current signal analysis using a modified bispectrum for machine fault diagnosis. Presented at ICROS-SICE International Joint Conference 2009, Fukuoka, Japan

This paper presents the use of the induction motor current to identify and quantify common faults within a two-stage reciprocating compressor. The theoretical basis is studied to understand current signal characteristics when the motor undertakes a v... Read More about Motor current signal analysis using a modified bispectrum for machine fault diagnosis.

Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition
Presentation / Conference
Guan, L., Gu, F., Shao, Y., Fazenda, B., & Ball, A. Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition. Presented at ICROS-SICE International Joint Conference 2009, Fukuoka, Japan

In this paper, a new method is proposed by combining ensemble empirical mode decomposition (EEMD) with order tracking techniques to analyse the vibration signals from a two stage helical gearbox. The method improves EEMD results in that... Read More about Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition.

Acoustic based safety emergency vehicle detection for intelligent transport systems
Presentation / Conference
Fazenda, B., Atmoko, H., Gu, F., Guan, L., & Ball, A. Acoustic based safety emergency vehicle detection for intelligent transport systems. Presented at ICROS-SICE International Joint Conference 2009, Fukuoka, Japan

A system has been investigated for the detection of incoming direction of an emergency vehicle. Acoustic detection methods based on a cross microphone array have been implemented. It is shown that source detection based on time delay estimation outpe... Read More about Acoustic based safety emergency vehicle detection for intelligent transport systems.