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All Outputs (120)

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

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.

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.

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.

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.

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.