All Outputs (103)

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.

Perception of room modes in critical listening spaces (2004)
Thesis
Fazenda, B. Perception of room modes in critical listening spaces. (Thesis). University of Salford, UK

Room modes are a recognised problem in small critical listening rooms and are known to cause colouration of sound reproduced within them. Investigations on the causes and solutions for this problem have been carried out for some time. Interest in th... Read More about Perception of room modes in critical listening spaces.

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.

A study on acoustics of critical audio control rooms (2001)
Other
Fazenda, B. (2001). A study on acoustics of critical audio control rooms

Since the advent of Radio Broadcast that acoustic designers have tried to define a standard for control rooms. Although many years have passed since the first control rooms were built and many different solutions have been tried and tested, a final... Read More about A study on acoustics of critical audio control rooms.

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.

Binaural sound source localization using machine learning with spiking neural networks features extraction
Thesis
Al-abboodi, H. (in press). Binaural sound source localization using machine learning with spiking neural networks features extraction. (Thesis). University of Salford

Human and animal binaural hearing systems are able take advantage of a variety of cues to localise sound-sources in a 3D space using only two sensors. This work presents a bionic system that utilises aspects of binaural hearing in an automated source... Read More about Binaural sound source localization using machine learning with spiking neural networks features extraction.

Evaluation and modelling of perceived audio quality in popular music, towards intelligent music production
Thesis
Wilson, A. Evaluation and modelling of perceived audio quality in popular music, towards intelligent music production. (Thesis). University of Salford

This thesis addresses three fundamental questions: What is mixing? What makes a high-quality mix? How can high-quality mixes be automatically generated? While these may seem essential to the very foundations of intelligent music production, this thes... Read More about Evaluation and modelling of perceived audio quality in popular music, towards intelligent music production.

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.

Distortion and clipping in audio, automatic detection and metering
Dataset
Kendrick, P., Jackson, I., Li, F., Cox, T., & Fazenda, B. (2015). Distortion and clipping in audio, automatic detection and metering. [Dataset]

For field recordings and user generated content recorded on phones, tablets and other mobile devices, nonlinear distortions caused by clipping and limiting at pre-amplification stages and dynamic range control (DRC), are common causes of poor audio q... Read More about Distortion and clipping in audio, automatic detection and metering.

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.

The use of sound intensity for characterisation of reflected energy in small rooms
Thesis
Romero Perez, J. The use of sound intensity for characterisation of reflected energy in small rooms. (Thesis). University of Salford

The sound field in rooms of small dimensions used for music reproduction is characteristically different from that found in larger rooms for music performance such as auditoria. Key differences between small critical listening spaces and large audi... Read More about The use of sound intensity for characterisation of reflected energy in small rooms.

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.

Measuring a portable audio device’s response to excessive sound levels
Report
Kendrick, P., Cox, T., Fazenda, B., & Jackson, I. Measuring a portable audio device’s response to excessive sound levels

This is a report detailing how a series of measurements were carried out to quantify the non-linear performance of a series of portable audio recorders. The performance of a series of common devices is quantified including the; Cannon 550D, Edirol r... Read More about Measuring a portable audio device’s response to excessive sound levels.

Assessing the quality of low frequency audio reproduction in critical listening spaces
Thesis
Stephenson, M. Assessing the quality of low frequency audio reproduction in critical listening spaces. (Thesis). University of Salford

The quality of low frequency audio reproduction in small spaces has always been problematic. For some time, methods have been suggested in order to optimise this reproduction. Many such methods have been based upon objective metrics which remain unpr... Read More about Assessing the quality of low frequency audio reproduction in critical listening spaces.

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.