All Outputs (103)

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.

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.

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.

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.

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.

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

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.

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

The time domain performance of standard listening rooms: an assessment of current rooms and recommendations for achieving improved compatibility (2006)
Presentation / Conference
Fazenda, B., Holland, K., Newell, P., & Castro, S. (2006, January). The time domain performance of standard listening rooms: an assessment of current rooms and recommendations for achieving improved compatibility. Presented at Institute of Acoustics

Perception of modal distribution metrics in critical listening spaces - dependence on room aspect ratios (2005)
Journal Article
Fazenda, B., Avis, M., & Davies, W. (2005). Perception of modal distribution metrics in critical listening spaces - dependence on room aspect ratios. Journal of the Audio Engineering Society, 53(12), 1128-1141

The subjective significance of two general types of metrics used to describe the "quality" of a room based on its aspect ratio are compared. Tests were carried out to evaluate differences between three virtual rooms that score extreme classifications... Read More about Perception of modal distribution metrics in critical listening spaces - dependence on room aspect ratios.

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.