Skip to main content

Research Repository

Advanced Search

All Outputs (30)

A hybrid intelligent agent for notification of users distracted by mobile phones in an urban environment (2019)
Presentation / Conference
Gelaim, T., Langer, G., Santos, E., Silveira, R., O'Hare, J., Kendrick, P., & Fazenda, B. (2019, February). A hybrid intelligent agent for notification of users distracted by mobile phones in an urban environment. Presented at 11th International Conference on Agents and Artificial Intelligence (ICAART), Prague, Czech Republic

Mobile devices are now ubiquitous in daily life and the number of activities that can be performed using them is continually growing. This implies increased attention being placed on the device and diverted away from events taking place in the surr... Read More about A hybrid intelligent agent for notification of users distracted by mobile phones in an urban environment.

Fixed echo rejection in sodar using non-coherent matched filter detection and Gaussian mixture model based post-processing (2018)
Journal Article
Kendrick, P., & von Hünerbein, S. (2019). Fixed echo rejection in sodar using non-coherent matched filter detection and Gaussian mixture model based post-processing. Journal of Atmospheric and Oceanic Technology, 36(1), 3-16. https://doi.org/10.1175/jtech-d-18-0095.1

Doppler sodar (SOund Detection and Ranging) is a technology used for acoustic based remote sensing of the lower planetary boundary layer. Sodars are often used to measure wind profiles however, they suffer from problems due to noise (both acoustic a... Read More about Fixed echo rejection in sodar using non-coherent matched filter detection and Gaussian mixture model based post-processing.

Vibro-electric transfer path analysis of a solid body electric guitar (2018)
Presentation / Conference
Elliott, A., Magill, J., & Kendrick, P. (2018, April). Vibro-electric transfer path analysis of a solid body electric guitar. Presented at Acoustics 2018, Cardiff, Wales

Solid bodied electric guitars typically employ one or more magnetic pickups attached to the guitar body in close proximity to the guitar strings. At low frequencies the amplitude of the vibrating string is typically far greater than vibrations transm... Read More about Vibro-electric transfer path analysis of a solid body electric guitar.

Eliminating wind noise contamination of wind turbine noise amplitude modulation ratings - first validation (2017)
Presentation / Conference
von Hünerbein, S., Kendrick, P., Kerscher, M., & Bradley, S. (2017, July). Eliminating wind noise contamination of wind turbine noise amplitude modulation ratings - first validation. Presented at The 24th International Congress on Sound and Vibration (ICSV24), London, UK

Microphone wind noise can corrupt outdoor measurements and recordings. It is a particular problem for wind turbine measurements because these cannot be carried out when the wind speed is low. Previous studies simulated the effect that microphone wi... Read More about Eliminating wind noise contamination of wind turbine noise amplitude modulation ratings - first validation.

Extended simulations of wind noise contamination of amplitude modulation ratings (2017)
Presentation / Conference
von Hünerbein, S., Kendrick, P., & Cox, T. (2017, May). Extended simulations of wind noise contamination of amplitude modulation ratings. Presented at Wind Turbine Noise 2017, Rotterdam, NL

Microphone wind noise can corrupt outdoor measurements and recordings and especially the rating of Amplitude Modulation (AM) depth. In a previous study simulations of synthesised wind turbine sounds in wind noise have shown that even at relatively lo... Read More about Extended simulations of wind noise contamination of amplitude modulation ratings.

The effect of microphone wind noise on the amplitude modulation of wind turbine noise and its mitigation (2016)
Journal Article
Kendrick, P., von Hünerbein, S., & Cox, T. (2016). The effect of microphone wind noise on the amplitude modulation of wind turbine noise and its mitigation. ˜The œJournal of the Acoustical Society of America (Online), 140(1), EL79. https://doi.org/10.1121/1.4955010

Microphone wind noise can corrupt outdoor recordings even when wind shields are used. When monitoring wind turbine noise, microphone wind noise is almost inevitable because measurements cannot be made in still conditions. The effect of microphone win... Read More about The effect of microphone wind noise on the amplitude modulation of wind turbine noise and its mitigation.

Perception and automated assessment of audio quality in user generated content (2016)
Conference Proceeding
quality in user generated content. In Quality of Multimedia Experience (QoMEX), 2016 Eighth International Conference on 6-8 June 2016. https://doi.org/10.1109/QoMEX.2016.7498974

Technology to record sound, available in personal devices such as smartphones or video recording devices, is now ubiquitous. However, the production quality of the sound on this user-generated content is often very poor: distorted, noisy, with garble... Read More about Perception and automated assessment of audio quality in user generated content.

Microphone handling noise : measurements of perceptual threshold and effects on audio quality (2015)
Journal Article
Kendrick, P., Jackson, I., Fazenda, B., Cox, T., & Li, F. (2015). Microphone handling noise : measurements of perceptual threshold and effects on audio quality. PLoS ONE, 10(10), e0140256. https://doi.org/10.1371/journal.pone.0140256

A psychoacoustic experiment was carried out to test the effects of microphone handling noise on perceived audio quality. Handling noise is a problem affecting both amateurs using their smartphones and cameras, as well as professionals using separate... Read More about Microphone handling noise : measurements of perceptual threshold and effects on audio quality.

Perceived audio quality of sounds degraded by non-linear distortions and single-ended assessment using HASQI (2015)
Journal Article
assessment using HASQI. Journal of the Audio Engineering Society, 63(9), 698-712. https://doi.org/10.17743/jaes.2015.0068

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... Read More about Perceived audio quality of sounds degraded by non-linear distortions and single-ended assessment using HASQI.

Microphone handling noise database (2015)
Dataset
Kendrick, P., Jackson, I., Fazenda, B., Cox, T., & Li, F. Microphone handling noise database. [Dataset]

Microphone handling noise can reduce the quality of audio recordings. A perceptual study into this effect has been carried out and the subjective response quantified. This database contains audio recordings of handling noises from 8 different micro... Read More about Microphone handling noise database.

Perception and automatic detection of wind-induced microphone noise (2014)
Journal Article
Jackson, I., Kendrick, P., Cox, T., Fazenda, B., & Li, F. (2014). Perception and automatic detection of wind-induced microphone noise. ˜The œJournal of the Acoustical Society of America (Online), 136(3), 1176-1186. https://doi.org/10.1121/1.4892772

Wind can induce noise on microphones, causing problems for users of hearing aids and for those making recordings outdoors. Perceptual tests in the laboratory and via the Internet were carried out to understand what features of wind noise are importan... Read More about Perception and automatic detection of wind-induced microphone noise.

Automatic detection of microphone handling noise (2014)
Presentation / Conference
Kendrick, P., Cox, T., Li, F., Fazenda, B., & Jackson, I. (2014, May). Automatic detection of microphone handling noise. Presented at 4th International Workshop on Cognitive Information Processing, Copenhagen, Denmark

Microphone handling noise is a common problem with user generated content. It can occur when the operator inadvertently knocks or brushes a recording device. Handling noise may be impulsive, where a microphone is knocked, or a more sustained rubbi... Read More about Automatic detection of microphone handling noise.

Simulating acoustic scattering from atmospheric temperature fluctuations using a k-space method (2014)
Journal Article
Hargreaves, J., Kendrick, P., & von Hünerbein, S. (2014). Simulating acoustic scattering from atmospheric temperature fluctuations using a k-space method. ˜The œJournal of the Acoustical Society of America (Online), 135(1), 82-92. https://doi.org/10.1121/1.4835955

This paper describes a numerical method for simulating far-field scattering from small regions of inhomogeneous temperature fluctuations. Such scattering is of interest since it is the mechanism by which acoustic wind velocity profiling devices (Dopp... Read More about Simulating acoustic scattering from atmospheric temperature fluctuations using a k-space method.

Blind estimation of reverberation time in classrooms and hospital wards (2012)
Journal Article
Kendrick, P., Shiers, N., Conetta, R., Cox, T., Shield, B., & Mydlarz, C. (2012). Blind estimation of reverberation time in classrooms and hospital wards. Applied Acoustics, 73(8), 770-780. https://doi.org/10.1016/j.apacoust.2012.02.010

This paper investigates blind Reverberation Time (RT) estimation in occupied classrooms and hospital wards. Measurements are usually made while these spaces are unoccupied for logistical reasons. However, occupancy can have a significant impact on... Read More about Blind estimation of reverberation time in classrooms and hospital wards.

Blind estimation of room acoustic parameters from speech and music signals (2009)
Thesis
Kendrick, P. Blind estimation of room acoustic parameters from speech and music signals. (Thesis). University of Salford

The acoustic character of a space is often quantified using objective room acoustic parameters. The measurement of these parameters is difficult in occupied conditions and thus measurements are usually performed when the space is un-occupied. This is... Read More about Blind estimation of room acoustic parameters from speech and music signals.

Monaural room acoustic parameters from music and speech (2008)
Journal Article
Kendrick, P., Cox, T., Li, F., Zhang, Y., & Chambers, J. (2008). Monaural room acoustic parameters from music and speech. ˜The œJournal of the Acoustical Society of America (Online), 124(1), 278-287. https://doi.org/10.1121/1.2931960

This paper compares two methods for extracting room acoustic parameters from reverberated speech and music. An approach which uses statistical machine learning, previously developed for speech, is extended to work with music. For speech, reverberatio... Read More about Monaural room acoustic parameters from music and speech.

Research into the improvement of the management of helicopter noise (2008)
Report
Waddington, D., Kendrick, P., Muirhead, M., & Browne, R. (2008). Research into the improvement of the management of helicopter noise

This report describes research undertaken to investigate the improvement of the management of helicopter noise in the UK. This work was carried out on behalf of the Department for Environment, Food and Rural Affairs (Defra) by the University of Salfo... Read More about Research into the improvement of the management of helicopter noise.

Performance of independent component analysis when used to separate competing acoustic sources in anechoic and reverberant conditions (2008)
Presentation / Conference
Shirley, B., & Kendrick, P. (2008, May). Performance of independent component analysis when used to separate competing acoustic sources in anechoic and reverberant conditions. Presented at AES 124th Convention, Amsterdam

A review of existing methods for independent component analysis was carried out and a series of experiments conducted assessing the use of existing independent component analysis (ICA) methods to separate microphone sources in varied acoustic environ... Read More about Performance of independent component analysis when used to separate competing acoustic sources in anechoic and reverberant conditions.

A combined blind source separation and adaptive noise cancellation scheme with potential application in blind acoustic parameter extraction (2008)
Journal Article
Zhang, Y., Chambers, J., Kendrick, P., Cox, T., & Li, F. (2008). A combined blind source separation and adaptive noise cancellation scheme with potential application in blind acoustic parameter extraction. Neurocomputing, 71(10-12), 2127-2139. https://doi.org/10.1016/j.neucom.2007.09.019

Room acoustic parameters such as reverberation time (RT) can be extracted from passively received speech signals by certain ‘blind’ methods, thereby mitigating the need for good controlled excitation signals or prior information of the room geometry.... Read More about A combined blind source separation and adaptive noise cancellation scheme with potential application in blind acoustic parameter extraction.

The effect of stereo crosstalk on intelligibility : comparison of a phantom stereo image and a central loudspeaker source (2007)
Journal Article
Shirley, B., Kendrick, P., & Churchill, C. (2007). The effect of stereo crosstalk on intelligibility : comparison of a phantom stereo image and a central loudspeaker source. Journal of the Audio Engineering Society, 55(10), 852-863

The roll out of surround sound for broadcasting and packaged media, and the consequent addition of a center loudspeaker for sound accompanying video have the potential to reduce the impact of acoustical crosstalk and so improve the intelligibility of... Read More about The effect of stereo crosstalk on intelligibility : comparison of a phantom stereo image and a central loudspeaker source.