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![Page 1: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/1.jpg)
Quantitative Analysis of Phrasing Strategies in Expressive Performance:
Authors: Eric Cheng and Elaine Chew Year: 2008
Presentation by: Elvira Burdiel GalendeELEM021, Queen Mary University
19 March 2012
Computational Methods and Analysis of Performances of Unaccompanied Bach for Solo Violin
![Page 2: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/2.jpg)
Introduction 1/2 Goal – Quantitative analysis of
phrasing strategies of expressive performance in violin. Andante movement from Bach’s Sonata
No.2 in A minor BWV 1003 for solo violin Regular pulse Unambiguous phrase structure
11 recorded performances + average Unlimited musician freedom on
expressive performance?
![Page 3: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/3.jpg)
Introduction 2/2
Look for indicator of phrasing strategy: Tempo extraction Loudness/dynamics extraction
Analysis of phrasing strategies via LMPD method Phrase strength - clarity Phrase volatility – variability of strength Phrase typicality – uniqueness of strategy
![Page 4: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/4.jpg)
Tempo extraction
Violin: soft indetermined onsets No reliable and accurate automatic beat
tracking tool Manual onset detection using a digital
waveform editor. Tempo = inverse of inter-onset interval Rectangular smoothing window
![Page 5: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/5.jpg)
Dynamics extraction
Use two existing models: 1- Single-band Leq (RLB) model 2- Multiband PEAQ loudness model Sample loudness at onsets Smooth by Gaussian window
Test models with manual annotation Correlation higher on 2 -> method
chosen
![Page 6: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/6.jpg)
Extracted data
Global means and ranges Section means and ranges
4 sections: A A’ B B’ Phrase means and ranges
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Extracted data - global
![Page 8: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/8.jpg)
Extract data – Section means
![Page 9: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/9.jpg)
Extract data – Section ranges
![Page 10: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/10.jpg)
Extract data – Phrase means
![Page 11: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/11.jpg)
Extract data – Phrase
![Page 12: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/12.jpg)
Data extraction - Phrasing
Loudness -> more consistent
![Page 13: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/13.jpg)
LMPD Method
Local maximum on loudness per phrase Phrase strength (clarity)
Difference between max and adjacent mins Phrase volatility
Standard deviation of strength over performance
Phrase typicality (uniqueness) Popularity of location of max
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LMPD results 1/2
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LMPD results 2/2
![Page 16: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/16.jpg)
LMPD Conclusions
Finite number of local maxima counts Phrase strength and volatility relates
to listening perception Typicality (uniqueness) vs greatness
of performance
![Page 17: Quantitative Analysis of Phrasing Strategies in Expressive Performance: Authors: Eric Cheng and Elaine Chew Year: 2008 Presentation by: Elvira Burdiel.](https://reader036.fdocuments.us/reader036/viewer/2022062421/56649ce15503460f949ab60c/html5/thumbnails/17.jpg)
General conclusions
Significant differences between tempo and dynamics consistency with phrasing strategy
Different constraints of tempo and dynamics, different perceptions
Dynamics more consistent in this analysis, opposite on other studies
Cultural constructs