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Author = Coyle, Eugene;
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Displaying Results 26 - 50 of 164 on page 2 of 7
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Automatic Bar Line Segmentation
(2007)
Gainza, Mikel; Barry, Dan; Coyle, Eugene
Automatic Bar Line Segmentation
(2007)
Gainza, Mikel; Barry, Dan; Coyle, Eugene
Abstract:
A method that segments the audio according to the position of the bar lines is presented. The method detects musical bars that frequently repeat in different parts of a musical piece by using an audio similarity matrix. The position of each bar line is predicted by using prior information about the position of previous bar lines as well as the estimated bar length. The bar line segmentation method does not depend on the presence of percussive instruments to calculate the bar length. In addition, the alignment of the bars allows moderate tempo deviations.
https://arrow.dit.ie/argcon/55
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Automatic Detection of Optimal Azimuth Widths for Sound Source Separation using Adress
(2008)
Barry, Dan; Fitzgerald, Derry; Cranitch, Matt; Coyle, Eugene
Automatic Detection of Optimal Azimuth Widths for Sound Source Separation using Adress
(2008)
Barry, Dan; Fitzgerald, Derry; Cranitch, Matt; Coyle, Eugene
Abstract:
The Adress alogrithm has proved successful as a means of separating sound sources from stereo mixtures. The algorithm has two main parameters, azimuth position and azimuth width, and these are typically set by the user for each source individually. For the separation of large amounts of audio material, such as in an audio archive, a method of automatically setting these parameters would be of use. This paper proposes a method of automatically obtaining the azimuth widths for the sources in a mixture by balancing the reconstruction error between the original spectrograms and the resynthesised spectrograms with the sparseness of the recovered sources, using an L-curve type approach.
https://arrow.dit.ie/argcon/3
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Automating Ornamentation Transcription
(2007)
Gainza, Mikel; Coyle, Eugene
Automating Ornamentation Transcription
(2007)
Gainza, Mikel; Coyle, Eugene
Abstract:
A novel technique for detecting single and multi-note ornaments is presented. The system detects audio segments by utilising and onset detector based on comb filters (ODCF), which is capable of detecting very close events. In addition, a novel method to remove spurious onsets due to offset events is introduced. The system utilises musical ornamentation theory to decide whether a sequence of audio segments correspond to an ornamentation musical structure. In order to evaluate the results, a database of signals produced by different players using the three different instruments has been utilised. The results represent a step forward towards fully automating ornamentation transcription
https://arrow.dit.ie/argcon/10
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Clustering NMF Basis Functions Using Shifted NMF for Monaural Sound Source Separation
(2011)
Jaiswal, Rajesh; Fitzgerald, Derry; Barry, Dan; Coyle, Eugene; Rickard, Scott
Clustering NMF Basis Functions Using Shifted NMF for Monaural Sound Source Separation
(2011)
Jaiswal, Rajesh; Fitzgerald, Derry; Barry, Dan; Coyle, Eugene; Rickard, Scott
Abstract:
Non-negative Matrix Factorization (NMF) has found use in singlechannel separation of audio signals, as it gives a parts-based decom-position of audio spectrograms where the parts typically correspondto individual notes or chords. However, a notable shortcoming ofNMF is the need to cluster the basis functions to their sources af-ter decomposition. Despite recent improvements in algorithms forclustering the basis functions to sources, much work still remains tofurther improve these algorithms. To this end we present a novelclustering algorithm which overcomes some of the limitations ofprevious clustering methods. This involves the use of Shifted Non-negative Matrix Factorization (SNMF) as a means of clustering thefrequency basis functions obtained from NMF. Results show that thisgives improved clustering of pitched basis functions over previousmethods
https://arrow.dit.ie/argcon/60
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Combining capacitor/inductor and idling asynchronous motor in design of a system for balance of a large two-phase industrial load over three phases
(2004)
Coyle, Eugene; Farrell, M; Campbell, W. J.
Combining capacitor/inductor and idling asynchronous motor in design of a system for balance of a large two-phase industrial load over three phases
(2004)
Coyle, Eugene; Farrell, M; Campbell, W. J.
Abstract:
This paper describes the design and implementation of a new solution to power quality problems associated with large unbalanced nonlinear loads at fine glass furnace production utilities. Such furnaces use two-phase electricity for reasons of enhanced temperature control and in order to maintain consistency of glass viscosity. A significant risk of power failure is introduced due to this requirement. The furnace load is also nonlinear in nature, due to temperature control by electronic power switching. This gives rise to risks associated with high harmonic distortion. A new method in design of filters to alleviate problems associated with this type of load is also described.
https://arrow.dit.ie/engscheleart/116
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Comparing FBG and PCF Force Sensors in a Laparoscopic Smart Surgical Scissor Instrument
(2011)
Callaghan, Dean; Rajan, Ginu; McGrath, Mark; Coyle, Eugene; Semenova, Yuliya; Farrell, ...
Comparing FBG and PCF Force Sensors in a Laparoscopic Smart Surgical Scissor Instrument
(2011)
Callaghan, Dean; Rajan, Ginu; McGrath, Mark; Coyle, Eugene; Semenova, Yuliya; Farrell, Gerald
Abstract:
This paper presents a sensorized laparoscopic surgical scissor instrument using both a fiber Bragg grating (FBG) and a tapered photonic crystal fiber (PCF) as force sensors. The sensors are located on the blades for the detection of interaction forces generated between the instrument and tissue during cutting. The force sensitivity of each sensorized blade is examined. Results show that the scissor blade-PCF sensor arrangement outperforms the blade with the FBG during static loading calibration experimentation. Moreover, experiments show that the PCF based arrangement is less sensitive to temperature effects than its FBG counterpart. This negates the need for additional temperature compensation sensors and techniques. The PCF sensor was shown to have higher strain measurement sensitivity (2 pm/με) than the FBG sensor (1.2pm/με).
https://arrow.dit.ie/engschmanconn/26
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Comparison of Signal Reconstruction Methods for the Azimuth Discrimination and Resynthesis Algorithm
(2005)
Barry, Dan; Lawlor, Bob; Coyle, Eugene
Comparison of Signal Reconstruction Methods for the Azimuth Discrimination and Resynthesis Algorithm
(2005)
Barry, Dan; Lawlor, Bob; Coyle, Eugene
Abstract:
The Azimuth Discrimination and Resynthesis algorithm, (ADRess), has been shown to produce high quality sound source separation results for intensity panned stereo recordings. There are however, artifacts such as phasiness which become apparent in the separated signals under certain conditions. This is largely due to the fact that only the magnitude spectra for the separated sources are estimated. Each source is then resynthesised using the phase information obtained from the original mixture. This paper describes the nature and origin of the associated artifacts and proposes alternative techniques for resynthesising the separated signals. A comparison of each technique is then presented.
http://mural.maynoothuniversity.ie/9767/
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Comparison of Signal Reconstruction Methods for the Azimuth Discrimination and Resynthesis Algorithm
(2005)
Barry, Dan; Lawlor, Robert; Coyle, Eugene
Comparison of Signal Reconstruction Methods for the Azimuth Discrimination and Resynthesis Algorithm
(2005)
Barry, Dan; Lawlor, Robert; Coyle, Eugene
Abstract:
The Azimuth Discrimination and Resynthesis algorithm (ADRess) has been shown to produce high quality sound source separation results for intensity panned stereo recordings. There are however, artifacts such as phasiness which become apparent in the separated signals under certain conditions. This is largely due to the fact that only the magnitude spectra for the separated sources are estimated. Each source is then resynthesised using the phase information obtained from the original mixture. This paper describes the nature and origin of the associated artifacts and proposes alternative techniques for resynthesising the separated signals. A comparison of each technque is then presented.
https://arrow.dit.ie/argcon/18
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Controlled braking scheme for a wheeled walking aid
(2006)
Coyle, Eugene; O'Dwyer, Aidan; Young, Eileen; Sullivan, Kevin; Toner, A.
Controlled braking scheme for a wheeled walking aid
(2006)
Coyle, Eugene; O'Dwyer, Aidan; Young, Eileen; Sullivan, Kevin; Toner, A.
Abstract:
A wheeled walking aid with an embedded controlled braking system is described. The frame of the prototype is based on combining features of standard available wheeled walking aids. A braking scheme has been designed using hydraulic disc brakes to facilitate accurate and sensitive controlled stopping of the walker by the user, and if called upon, by automatic action. Braking force is modulated via a linear actuating stepping motor. A microcontroller is used for control of both stepper movement and for supervisory control. An encoder is used to supervise walker movement in terms of time, distance and speed.
https://arrow.dit.ie/engscheleart/65
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Convergence in Human Dialogues Time Series Analysis of Acoustic Feature
(2009)
Kousidis, Spyros; Dorran, David; Mcdonnell, Ciaran; Coyle, Eugene
Convergence in Human Dialogues Time Series Analysis of Acoustic Feature
(2009)
Kousidis, Spyros; Dorran, David; Mcdonnell, Ciaran; Coyle, Eugene
Abstract:
Convergence of acoustic/prosodic (a/p) features between two speakers is a well-known property of human dialogue. It has been suggested that this particular aspect of human interaction should be implemented in spoken dialogue systems, so that they can be perceived as more “humanlike”. This paper presents a quantitative analysis method that can provide information required for modeling the phenomenon of convergence. The analysis is a combination of TAMA, a previously introduced data extraction method, and bivariate time series analysis. Results show significant correlation of a/p features between speaker dyads in the recorded dialogues analyzed, and indicate a significant,amount of feedback, which a statistical verification of bidirectional convergence.
https://arrow.dit.ie/dmccon/2
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Crucial Design Issues for Special Access Technology
(2012)
O'Rourke, Pearl; Ekins, Ray; Timmins, Bernard; Timmins, Fiona; Long, Siobhan; Coyl...
Crucial Design Issues for Special Access Technology
(2012)
O'Rourke, Pearl; Ekins, Ray; Timmins, Bernard; Timmins, Fiona; Long, Siobhan; Coyle, Eugene
Abstract:
Introduction: Electronic Assistive Technology (EAT) aims to empower individuals with disabilities by reducing the environmental and societal barriers they encounter. Power wheelchairs aid mobility, communication aids allow for more efficient conversation, environmental controls permit greater autonomy, and personal computers provide access to information, social networking and educational activities. In order to control EAT, a computer input device is necessary. Mice and keyboards are typically used but in certain cases, Special Access Technology (SAT) is required. SAT refers to adapted and alternative computer input devices that are utilised when mainstream software and hardware are not suitable. Examples are switches, joysticks and screen-scanning software. Unfortunately, high costs can hinder access to many types of assistive technology (AT), including SAT, and even when this is overcome, device abandonment can occur. Abandonment has been linked to inappropriate product design le...
https://arrow.dit.ie/engschmanconn/30
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Crucial Design Issues for Special Access Technology; a Delphi Study
(2013)
O'Rourke, Pearl; Ekins, Ray; Timmins, Fiona; Long, Siobhan; Timmins, Bernard; Coyl...
Crucial Design Issues for Special Access Technology; a Delphi Study
(2013)
O'Rourke, Pearl; Ekins, Ray; Timmins, Fiona; Long, Siobhan; Timmins, Bernard; Coyle, Eugene
Abstract:
Purpose: To develop and demonstrate a method to involve professional users of assistive technology (AT) in the development process of customisable products. Employing the ideas of user participation and mass customisation, this research addresses the need for reduced product costs and optimised product flexibility. Method: An adaptable six-question Delphi study was developed to establish consensus among AT professionals on design issues relating to a specified AT domain requiring innovation. The study is demonstrated for the special access technology (SAT) domain. A modified morphological matrix structures the application of the study results to the product design process. Results: Fourteen professionals from the Republic of Ireland and the UK participated. Consensus was reached on prevalent parts of SAT that malfunction, primary reasons for SAT malfunction, characteristics of clients associated with SAT selection, client needs regarding SAT use and training, desirable traits of SAT...
https://arrow.dit.ie/engschmanart/10
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Crucial design issues for special access technology; a Delphi study
(2015)
O‟Rourke, Pearl; Ekins, R.; Timmins, B; Timmins, Fiona; Long, Siobhan; Coyle, Eugene
Crucial design issues for special access technology; a Delphi study
(2015)
O‟Rourke, Pearl; Ekins, R.; Timmins, B; Timmins, Fiona; Long, Siobhan; Coyle, Eugene
Abstract:
Purpose. To develop and demonstrate a method to involve professional users of assistive technology (AT) in the development process of customisable products. Employing the ideas of user participation and mass customisation, this research addresses the need for reduced product costs and optimised product flexibility. Method. An adaptable six-question Delphi study was developed to establish consensus among AT professionals on design issues relating to a specified AT domain requiring innovation. The study is demonstrated for the special access technology (SAT) domain. A modified morphological matrix structures the application of the study results to the product design process Results. 14 Professionals from the Republic of Ireland and the UK participated. Consensus was reached on prevalent parts of SAT that malfunction, primary reasons for SAT malfunction, characteristics of clients associated with SAT selection, client needs regarding SAT use and training, desirable traits of SAT, and c...
http://hdl.handle.net/10147/348564
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Design of a Single Alkaline Fuel Cell Test Bed
(2010)
Brunton, James; Kennedy, David; O'Rourke, Fergal; Coyle, Eugene
Design of a Single Alkaline Fuel Cell Test Bed
(2010)
Brunton, James; Kennedy, David; O'Rourke, Fergal; Coyle, Eugene
Abstract:
This Research focuses on the design and development of a single alkaline fuel cell test bed facility. The paper also makes reference to problems and solutions encountered during construction that resulted in a more effective fuel cell and operating system. As a sustainable and clean alternative energy option, fuel cell technology has the potential to provide electrical power for stationary and mobile applications. Hydrogen and fuel cell technologies are a viable long term energy solution, but to-date has failed to make a major impact on the energy market. Fuel Cells offer a sustainable energy options that can be cost effective and mass-produced.
https://arrow.dit.ie/engschmeccon/18
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Design of a wireless system for patient-hospital communciation and result validation in point of care testing
(2005)
McGrory, John; Lynch, Owen; Coyle, Eugene
Design of a wireless system for patient-hospital communciation and result validation in point of care testing
(2005)
McGrory, John; Lynch, Owen; Coyle, Eugene
Abstract:
This paper discuses mobile phone (cell phone) and wireless applications for linking patients who manage their healthcare outside the hospital using point of care testing (POCT) to hospital information systems (HIS). Certain medical conditions require patients to manage their healthcare by performing on themselves POC testing and act faithfully on the result. This raises quality control issue, as these POC samples and testing procedures are not independently overseen by professional hospital staff. In hospitals, samples taken by clinicians are validated by hi-tech computerised validation systems to ensure plausibility, before physicians rely on them. Patients in the home must often use results from these POCT to determine medication dosage or to monitor their condition. Thus, there is a need to implement a system of result validation, either locally or by the hospital validation system itself for people testing with POCT devices.
https://arrow.dit.ie/engscheleart/99
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Design of a Wireless System for Patient-Hospital Communication and Result Validation in Point of Care Testing
(2005)
McGrory, John; Lynch, Owen; Coyle, Eugene
Design of a Wireless System for Patient-Hospital Communication and Result Validation in Point of Care Testing
(2005)
McGrory, John; Lynch, Owen; Coyle, Eugene
Abstract:
This paper discuses mobile phone (cell phone) and wireless applications for linking patients who manage their healthcare outside the hospital using Point of Care Testing (POCT) to hospital information systems (HIS). Certain medical conditions require patients to manage their healthcare by performing on themselves POC testing and act faithfully on the result. This raises quality control issue, as these POC samples and testing procedures are not independently overseen by professional hospital staff. In hospitals, samples taken by clinicians are validated by hi-tech computerised validation systems to ensure plausibility, before physicians rely on them. Patients in the home must often use results from these POCT to determine medication dosage or to monitor their condition. Thus, there is a need to implement a system of result validation, either locally or by the hospital validation system itself, for people testing with POCT devices.
https://arrow.dit.ie/teapotcon/17
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Design of Mobile Phone Applications for Point-Of-Care test result validation.
(2005)
McGrory, John; Lynch, Owen; Coyle, Eugene
Design of Mobile Phone Applications for Point-Of-Care test result validation.
(2005)
McGrory, John; Lynch, Owen; Coyle, Eugene
Abstract:
Patients with many different conditions are required to take the management of their condition into their own hands and perform Point of Care Testing (POCT) at home. However, this raises quality control issues that would not arise in a clinical setting, since the sample acquisition and testing procedures are not overseen by professional hospital staff. Another major issue, the main focus of this research, is that results from such tests are not clinically validated to ensure that they are plausible for that patient at the time of testing. In hospital, tests taken by clinicians are validated by hi-tech computerised validation systems, before a diagnosis is made. Patients at home must often use the results of tests they take to determine medication dosage or monitor their condition, but these results do not undergo a validation procedure. Thus, there is a need to implement a system of result validation, either locally or by the hospital validation system itself, for people testing at ...
https://arrow.dit.ie/teapotcon/16
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DETECT: Developing Sustainable Pathways towards Innovative, Sustainable Collaboration between Four Engineering, Design and Technology Education Institutions
(2008)
Dyrenfurth, Michael; Murphy, Mike; McHale, Donal; Hayes, Richard; Herrick, Robert; Sath...
DETECT: Developing Sustainable Pathways towards Innovative, Sustainable Collaboration between Four Engineering, Design and Technology Education Institutions
(2008)
Dyrenfurth, Michael; Murphy, Mike; McHale, Donal; Hayes, Richard; Herrick, Robert; Sathianathan, Dhushy; Schmidt-Walter, Heinz; Coyle, Eugene; Simpson, Robert
https://arrow.dit.ie/engineduccon/1
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Development of a Computer-Based Violin Teaching Aid: ViTool
(2005)
Charles, Jane; Fitzgerald, Derry; Coyle, Eugene
Development of a Computer-Based Violin Teaching Aid: ViTool
(2005)
Charles, Jane; Fitzgerald, Derry; Coyle, Eugene
Abstract:
This paper considers the development of a violin teaching aid, called ViTool, which is based on violin pedagogy, sound analysis, and comparison of beginner and good player recordings. It is a computer based teaching aid and will ultimately consist of at least four task dependent tools. Typical beginner faults have been identified and features, that best describe them for classification purposes, are considered. The ViTool is not intended as a replacement or electronic teacher, but as a teaching aid. Presently, it seems that no such violin learning aid or tool exists and an opportunity exists for the development of such home learning aids. This paper puts forward the initial steps towards such a teaching aid.
https://arrow.dit.ie/argcon/75
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Discrete-time velocity-based multiple model networks
(2002)
Gao, Ruiyao; O'Dwyer, Aidan; McLoone, Seamus; Coyle, Eugene
Discrete-time velocity-based multiple model networks
(2002)
Gao, Ruiyao; O'Dwyer, Aidan; McLoone, Seamus; Coyle, Eugene
Abstract:
The velocity-based local model (LM) network is a novel modelling approach that overcomes the lack of interpretability associated with the conventional LM network technique. The global dynamics of the nonlinear network are directly related to the underlying sub-model dynamics. Thus, the velocity-based network is ideally suited to the development of local controller (LC) networks. Furthermore, the local models are continuous-time, velocity-based and linear, providing continuity with established linear theory. To date, research has focused on the continuous-time version of the velocity-based network. The application of digital computer is widely popular in the field of control and, therefore, this paper develops a discrete-time velocity-based multiple model representation. A complex nonlinear process, in the form of a simulated continuous stirred tank reactor, is used to examine the modelling capabilities of the proposed discrete-time technique.
https://arrow.dit.ie/engscheleart/23
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DIT-CALL: naturally speaking but slow
(2004)
Campbell, Dermot; Meinardi, Marty; Richardson, Bunny; Coyle, Eugene; Donnellan, Olivia;...
DIT-CALL: naturally speaking but slow
(2004)
Campbell, Dermot; Meinardi, Marty; Richardson, Bunny; Coyle, Eugene; Donnellan, Olivia; Leung, Pak Kui; MacDonaill, Ciaran; Jung, Elmar; Pritchard, Charles
Abstract:
This paper introduces a new development in speech technology and describes its planned application in an EFL context. Special attention is paid to the pedagogical potential of the resultant language tool.
https://arrow.dit.ie/dmcart/4
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Drum Source Separation using Percussive Feature Detection and Spectral Modulation
(2005)
Barry, Dan; Fitzgerald, Derry; Coyle, Eugene; Lawlor, Robert
Drum Source Separation using Percussive Feature Detection and Spectral Modulation
(2005)
Barry, Dan; Fitzgerald, Derry; Coyle, Eugene; Lawlor, Robert
Abstract:
This papers presents a method for the separation and resynthesis of drum sources from single channel polyphonic mixtures. The frequency domain technique involves identifying the presence of a drum using a novel percussive feature detection function, after which the short-time magniture spectrum is estimated and scaled according to an estimated time-amplitude function derived from the percussive measure. In addition to producing high quality separation results, the method described is also a useful pre-process for drum transcription techniques such as Prior Subspace Analysis in the presence of pitched instruments.
https://arrow.dit.ie/argcon/17
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Drum Source Separation using Percussive Feature Detection and Spectral Modulation
(2005)
Barry, Dan; Fitzgerald, Derry; Coyle, Eugene; Lawlor, Bob
Drum Source Separation using Percussive Feature Detection and Spectral Modulation
(2005)
Barry, Dan; Fitzgerald, Derry; Coyle, Eugene; Lawlor, Bob
Abstract:
We present a method for the separation and resynthesis of drum sources from single channel polyphonic mixtures. The frequency domain technique involves identifying the presence of a drum using a novel percussive feature detection function, after which the short-time magnitude spectrum is estimated and scaled according to an estimated time-amplitude function derived from the percussive measure. In addition to producing high quality separation results, the method we describe is also a useful pre-process for drum transcription techniques such as Prior Subspace Analysis in the presence of pitched instruments.
http://mural.maynoothuniversity.ie/699/
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Drum Transcription in the Presence of Pitched Instruments using Prior Subspace Analysis
(2003)
Fitzgerald, Derry; Lawlor, Robert; Coyle, Eugene
Drum Transcription in the Presence of Pitched Instruments using Prior Subspace Analysis
(2003)
Fitzgerald, Derry; Lawlor, Robert; Coyle, Eugene
Abstract:
This paper demonstrates the use of Prior Subspace Analysis (PSA) as a method for transcribing drums in the presence of pitched instruments. PSA uses prior subspaces that represent the sources to be transcribed to overcome some of the problems associated with other subspace methods such as Independent Subspace Analysis (ISA) or sub-band ISA. The use of prior knowledge results in improved robustness for transcription purposes and enables the method to work more readily in the presence of pitched instruments than other subspace methods. The system presented in this paper attempts to extend the use of PSA to transcribe drum sounds in the presence of interfering pitched instruments.
https://arrow.dit.ie/argcon/77
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Drum Transcription using Automatic Grouping of Events and Prior Subspace Analysis
(2003)
Fitzgerald, Derry; Lawlor, Robert; Coyle, Eugene
Drum Transcription using Automatic Grouping of Events and Prior Subspace Analysis
(2003)
Fitzgerald, Derry; Lawlor, Robert; Coyle, Eugene
Abstract:
While Prior Subspace Analysis (PSA) has proved an effective tool for transcribung mixtures of snare, kick drum and hi-hat, attempts to extend it to increased numbers of drum types have met with mixed results. To overcome this an automatic grouping method has been developed to group drum events on their similarity in frequency content. Combined with PSA this creates a system able to handle robustly greater numbers of drum types. The effectiveness of this method is demonstrated in a drum transcription algorithm.
https://arrow.dit.ie/argcon/37
Displaying Results 26 - 50 of 164 on page 2 of 7
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