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- Music transcription (2)
- Onset detection (2)
- Sound source separation (2)
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- Audio time scale modification (1)
- Azimuth discrimination (1)
- Competitive advantage (1)
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- FIR comb filters (1)
- ICT (1)
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- Music (1)
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- Portals (1)
- Resynthesis (1)
- Subband approach (1)
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- Time scale modification (1)
- Violin (1)
Articles 1 - 9 of 9
Full-Text Articles in Other Engineering
A Multi-Criteria Approach To The Evaluation Of Aviation E-Marketplace Portals, Edward Sweeney, Emilio Esposito, Pietro Evangelista, Michel Mastroianni, Renato Passaro, Claudia-Maria Wagner
A Multi-Criteria Approach To The Evaluation Of Aviation E-Marketplace Portals, Edward Sweeney, Emilio Esposito, Pietro Evangelista, Michel Mastroianni, Renato Passaro, Claudia-Maria Wagner
Conference papers
After a proliferation of logistics e-Marketplaces during the dot.com boom of 1998-2000, there has been a high rate of failure and survivals are developing much more slowly than expected. This is the case of aviation industry where a large number of B2B e-Marketplaces emerged according to the focus of aviation companies’ strategies on electronic B2B in the late 1990s. However, the current use of e-Marketplaces in the industry is low and many of them have ceased trading. The traditional e-Marketplaces model have been characterised by poor quality of portals and the lack of technical standards. Such an approach is unsustainable …
Harmonic Sound Source Separation Using Fir Comb Filters, Mikel Gainza, Robert Lawlor, Eugene Coyle
Harmonic Sound Source Separation Using Fir Comb Filters, Mikel Gainza, Robert Lawlor, Eugene Coyle
Conference papers
A technique for separating harmonic sound sources using FIR comb filters is presented. First, a pre-processing task is performed by a multipitch estimator to detect the pitches that the signal is composed of. Then, a method based on the Short Time Fourier Transform (STFT) is utilized to iteratively extract the harmonics belonging to a given source by using FIR comb filters. The presented approach improves upon exising sinusoidal model approaches in terms of the perceptual quality of the extracted signal.
Time-Scale Modification Of Music Using A Synchronized Subband/Time-Domain Approach, David Dorran, Robert Lawlor
Time-Scale Modification Of Music Using A Synchronized Subband/Time-Domain Approach, David Dorran, Robert Lawlor
Conference papers
Time-domain audio time-scaling algorithms are efficient in comparison to their frequency-domain counterparts, but they rely upon the existence of a quasi-periodic signal to produce a high quality output. This requirement makes them unsuitable for direct application to complex multi-pitched signals such as polyphonic music. However, it has been shown that applying time-domain algorithms on a subband basis can resolve this issue. Existing subband/time domain approaches result in a reverberant/phasy artifact being introduced into the output due to poor synchronization between time-scaled subbands. This paper presents a number of synchronization schemes that greatly reduce the amount of reverberation/phasiness introduced into the …
An Efficient Phasiness Reduction Technique For Moderate Audio Time-Scale Modification, David Dorran, Eugene Coyle, Robert Lawlor
An Efficient Phasiness Reduction Technique For Moderate Audio Time-Scale Modification, David Dorran, Eugene Coyle, Robert Lawlor
Conference papers
Phase vocoder approaches to time-scale modification of audio introduce a reverberant/phasy artifact into the time-scaled output due to a loss in phase coherence between short-time Fourier transform (STFT) bins. Recent improvements to the phase vocoder have reduced the presence of this artifact, however, it remains a problem. A method of time-scaling is presented that results in a further reduction in phasiness, for moderate time-scale factors by taking advantage of some flexibility that exists in the choice of phase required so as to maintain horizontal phase coherence between related STFT bins. Furthermore, the approach leads to a reduction in computational load …
Towards A Computer Assisted Violin Teaching Aid, Derry Fitzgerald, Jane Charles, Eugene Coyle
Towards A Computer Assisted Violin Teaching Aid, Derry Fitzgerald, Jane Charles, Eugene Coyle
Conference papers
This paper presents a possible approach for developing a violin teaching aid based on violin pedagogy, sound analysis and comparison of beginner and good player recordings. This teaching aid is targeted at students who have difficulty listening attentively to the sounds they produce. It aims to draw their attention to the sound of a fault, offer correction and to train the user's ear to actively listen.
Real-Time Sound Source Separation: Azimuth Discrimination And Resynthesis, Dan Barry, Robert Lawlor, Eugene Coyle
Real-Time Sound Source Separation: Azimuth Discrimination And Resynthesis, Dan Barry, Robert Lawlor, Eugene Coyle
Conference papers
We present a real-time sound source separation algorithm which performs the task of source separation based on the lateral displacement of a source within the stereo field. The algorithm exploits the use of the pan pot as a means to achieve image localisation within stereophonic recordings. As such, only an interaural intensity difference exists between left and right channels for a single source. Gain scaling and phase cancellation techniques are used in the frequency domain to expose frequency dependent nulls across the Azimuth plane. The position of these nulls in conjuction with magnitude estimation and grouping techniques are then used …
Single Note Ornaments Transcription For The Irish Tin Whistle Based On Onset Detection, Mikel Gainza, Eugene Coyle, Robert Lawlor
Single Note Ornaments Transcription For The Irish Tin Whistle Based On Onset Detection, Mikel Gainza, Eugene Coyle, Robert Lawlor
Conference papers
Oranamentation plays a very important role in Irish traditional music giving more expression to the music by altering or embellishing small pieces of a melody. Single-note ornamentation, such as cuts and strikes, are the most common type in Irish traditional music and are played by articulating the note pitch during the onset stage. A technique for transcribing single note ornamentation for the tin whistle is based on onset detection is presented. This method focuses on the characteristics of the tin whistle within Irish traditional music, customising a time-frequency based representation for detecting the instant when new notes played using single …
Onset Detection And Music Transcription For The Irish Tin Whistle, Mikel Gainza, Robert Lawlor, Eugene Coyle, Aileen Kelleher
Onset Detection And Music Transcription For The Irish Tin Whistle, Mikel Gainza, Robert Lawlor, Eugene Coyle, Aileen Kelleher
Conference papers
A technique for detecting tin whistle note onsets and transcribing the corresponding pitches is presented. This method focuses on the characteristics of the tin whistle within Irish traditional music, customising a time-frequency based representation for extracting the instant when a note starts and the music notation. Results show that the presented approach improves upon the existing energy based approaches in terms of the percentage of correct detections.
Information And Communication Technologies (Ict) Practices In Small Italian Transport And Logistics Service Providers: Empirical Findings And Critical Issues, Maurizio Caiazzo, Pietro Evangelista, Edward Sweeney
Information And Communication Technologies (Ict) Practices In Small Italian Transport And Logistics Service Providers: Empirical Findings And Critical Issues, Maurizio Caiazzo, Pietro Evangelista, Edward Sweeney
Conference papers
No abstract provided.