FDTD/K-DWM simulation of 3D room acoustics on general purpose graphics hardware using compute unified device architecture (CUDA) (2010)
Journal Article
Sheaffer, J., & Fazenda, B. (2010). FDTD/K-DWM simulation of 3D room acoustics on general purpose graphics hardware using compute unified device architecture (CUDA)

The growing demand for reliable prediction of sound fields in rooms have resulted in adaptation of various approaches for physical modeling, including the Finite Difference Time Domain (FDTD) and the Digital Waveguide Mesh (DWM). Whilst considered ve... Read More about FDTD/K-DWM simulation of 3D room acoustics on general purpose graphics hardware using compute unified device architecture (CUDA).

Studies in modal density – its effect at low frequencies (2009)
Presentation / Conference
Wankling, M., & Fazenda, B. (2009, November). Studies in modal density – its effect at low frequencies. Presented at Reproduced Sound 25, Brighton

The ability to objectively measure the reproduction quality of a small room at low frequencies has long been desired. Over many years, there have been attempts to produce recommendations, metrics, and criteria by which to define a particular room. Th... Read More about Studies in modal density – its effect at low frequencies.

Characterisation of the directionality of reflections in small room acoustics (2009)
Presentation / Conference
Romero, J., Fazenda, B., & Atmoko, H. (2009, November). Characterisation of the directionality of reflections in small room acoustics. Presented at Reproduced sound 25, Brighton

This paper investigates the extraction and analysis of temporal and spatial distribution of early sound decay. A method based on B-format signals is adapted for small rooms. It can map the spatial and temporal distribution of sound energy and its di... Read More about Characterisation of the directionality of reflections in small room acoustics.

Objective quality measurement of audio using multiband dynamic range analysis (2009)
Presentation / Conference
Fenton, S., Fazenda, B., & Wakefield, J. (2009, November). Objective quality measurement of audio using multiband dynamic range analysis. Presented at Reproduced sound 25, Brighton

Ever since the very first recordings were made, people have strived to improve the recording and playback process to a point of ‘complete transparency’. However, in music production, it’s certainly the case that sound-engineers and producers employ t... Read More about Objective quality measurement of audio using multiband dynamic range analysis.

Noise source localisation in a car environment (2009)
Presentation / Conference
Fazenda, B., Gu, F., Ball, A., & Guan, L. (2009, August). Noise source localisation in a car environment. Presented at 8th International Conference on Damage Assessment of Structures, Beijing

Spurious noise (rattles, squeaks, etc) in the interior of car cabinets can be annoying, distractive and indicative of potential performance problems. Fault finding these problems can be difficult since the fault is intermittent and may not necessaril... Read More about Noise source localisation in a car environment.

DOA estimation in car for abnormal sound localisation (2009)
Presentation / Conference
Guan, L., Gu, F., Fazenda, B., Ball, A., Yichun, Y., & Pengxiao, T. (2009, August). DOA estimation in car for abnormal sound localisation. Presented at 8th International Conference on Damage Assessment of Structures, Beijing

Spurious noise in car cabinet can be not only annoying bust also indicative of some potential faults. A small square microphone array with 4 sensors was adopted in this paper to localize the sound source in car for fault diagnosis. A new voice activ... Read More about DOA estimation in car for abnormal sound localisation.

Measurement and characterisation of faults in the intake system of a turbocharged engine using a directional acoustic probe (2009)
Presentation / Conference
probe. Presented at COMADEM 2009, San Sebastian, Spain

Engine intake system leaks are a primary reason behind unsatisfactory operational and emission characteristics of turbocharged engines. In faulty conditions, the intake mass flow sensed by the mass flow sensor does not reach the combustion chamber, r... Read More about Measurement and characterisation of faults in the intake system of a turbocharged engine using a directional acoustic probe.

Subjective validity of figures of merit for room aspect ratio design (2009)
Presentation / Conference
Wankling, M., & Fazenda, B. (2009, May). Subjective validity of figures of merit for room aspect ratio design. Presented at 126th Audio Engineering Society Convention, Munich

Attempts have long been made to classify a room's low frequency audio reproduction capability with regards to its aspect ratio. Common metrics used have relied on the homogeneous distribution of modal frequencies and from these a number of 'optimal'... Read More about Subjective validity of figures of merit for room aspect ratio design.

Can we predict what you hear? (2009)
Presentation / Conference
Wankling, M., & Fazenda, B. (2009, March). Can we predict what you hear?. Presented at University of Huddersfield Research Festival, Huddersfield

Novel objective and subjective metrics for the assessment of sound quality in critical listening rooms (2009)
Presentation / Conference
Romero, J., & Fazenda, B. (2009, March). Novel objective and subjective metrics for the assessment of sound quality in critical listening rooms. Presented at University of Huddersfield Research Festival, Huddersfield

Quality of low frequency audio reproduction in critical listening spaces (2008)
Presentation / Conference
Fazenda, B. (2008, December). Quality of low frequency audio reproduction in critical listening spaces. Presented at 10th Meeting of the Portuguese Audio Engineering Society, Lisbon, Portugal

The optimization of modal spacing within small rooms (2008)
Presentation / Conference
Wankling, M., & Fazenda, B. (2008, November). The optimization of modal spacing within small rooms. Presented at Computing and Engineering Annual Researchers' Conference 2008, Huddersfield

The reproduction of audio in small rooms is significantly affected by room modes – resonant frequencies set up as a result of the geometry of the room. These frequency specific modes combine to form a unique frequency response for that room. This fre... Read More about The optimization of modal spacing within small rooms.

Acoustic diagnosis of driving belt physical condition in enclosures (2008)
Presentation / Conference
Fazenda, B., Gu, F., Ball, A., & Gilkes, O. (2008, October). Acoustic diagnosis of driving belt physical condition in enclosures. Presented at Internoise 2008, Shanghai, China

Timing belt transmission is a key subsystem of international combustion engines. Faults in such belt systems lead to power loss, increased emissions and, in case of failure, may even cause severe damage to the whole engine. Hitherto, the physical con... Read More about Acoustic diagnosis of driving belt physical condition in enclosures.

Optimal modal spacing and density for critical listening (2008)
Presentation / Conference
Fazenda, B., & Wankling, M. (2008, October). Optimal modal spacing and density for critical listening. Presented at 125th Audio Engineering Society Convention, San Francisco, CA, USA

This paper presents a study on the subjective effects of modal spacing and density. These are measures often used as indicators to define particular aspect ratios and source positions to avoid low frequency reproduction problems in rooms. These ind... Read More about Optimal modal spacing and density for critical listening.

Accurate sound source localization in a reverberant environment using multiple acoustic sensors (2008)
Journal Article
Atmoko, H., Tan, D., Tian, G., & Fazenda, B. (2008). Accurate sound source localization in a reverberant environment using multiple acoustic sensors. Measurement Science and Technology, 19(2), https://doi.org/10.1088/0957-0233/19/2/024003

This paper introduces a new method for the estimation of sound source distance and direction using at least three microphone sensors in indoor environments. Unlike the other methods that normally use approximations in obtaining the time difference be... Read More about Accurate sound source localization in a reverberant environment using multiple acoustic sensors.

3-Dimensional room impulse response measurements in critical listening spaces (2008)
Presentation / Conference
Romero Perez, J., & Fazenda, B. (2008, January). 3-Dimensional room impulse response measurements in critical listening spaces. Presented at Institute of Acoustics

Most of the knowledge and the existing objective acoustic measures defined to describe the sound field in large spaces are commonly evoked to predict the acoustic performance of small rooms. It is now becoming evident that this practice leads to flaw... Read More about 3-Dimensional room impulse response measurements in critical listening spaces.

Thresholds of detection for changes to the Q-factor of low frequency modes in listening environments (2007)
Journal Article
Avis, M., Fazenda, B., & Davies, W. (2007). Thresholds of detection for changes to the Q-factor of low frequency modes in listening environments. Journal of the Audio Engineering Society, 55(7/8), 611-622

Localisation of sound sources using coincident microphone techniques (2007)
Presentation / Conference
Fazenda, B. (2007, January). Localisation of sound sources using coincident microphone techniques. Presented at Institute of Acoustics

Modulation transfer function as a measure of room low frequency performance (2006)
Presentation / Conference
Fazenda, B., Holland, K., Newell, P., & Castro, S. (2006, January). Modulation transfer function as a measure of room low frequency performance. Presented at Institute of Acoustics

Excess phase effects and modulation transfer function degradation in relation to loudspeakers and rooms intended for the quality control monitoring of music (2006)
Presentation / Conference
Holland, K., Newell, P., Castro, S., & Fazenda, B. (2006, January). Excess phase effects and modulation transfer function degradation in relation to loudspeakers and rooms intended for the quality control monitoring of music. Presented at Institute of Acoustics

Previous papers 1, 2 have discussed the effects of loudspeaker alignment and resonances on the accuracy of reproduction of low frequency audio signals, and a system of modulation transfer function (MTF) measurement was developed which incorporated bo... Read More about Excess phase effects and modulation transfer function degradation in relation to loudspeakers and rooms intended for the quality control monitoring of music.