Vibrato of saxophones

Area of Science:

• Music Acoustics
• Instrumental Performance Science
• Signal Processing

Background:

• Vibrato is a crucial expressive element in musical performance.
• Alto saxophone vibrato techniques, specifically 'à la machoire' and 'sur l'air,' are distinct but not well-differentiated acoustically.
• Objective analysis of vibrato can enhance instrumental pedagogy and performance practice.

Purpose of the Study:

• To acoustically differentiate between 'à la machoire' and 'sur l'air' vibrato techniques in alto saxophone playing.
• To develop a computational model for simulating single-reed instrument vibrato.
• To compare simulated vibrato characteristics with recorded performance data.

Main Methods:

• Recording vibrato signals from multiple alto saxophone players.
• Applying time-frequency analysis to quantify vibrato rate (frequency modulation) and vibrato extent (amplitude modulation).
• Developing a time-domain simulation model of single-reed instrument vibrato, controlled by mouth overpressure and reed-mouthpiece parameters.

Main Results:

• Identified parameters derived from time-frequency analysis that help distinguish between the two vibrato playing styles.
• Successfully created time-domain simulations of alto saxophone vibrato.
• Preliminary comparisons show potential correlations between simulated and recorded vibrato characteristics.

Conclusions:

• Time-frequency analysis provides a quantitative basis for distinguishing alto saxophone vibrato techniques.
• The developed simulation model offers a tool for further research into vibrato mechanisms.
• Further research is needed to refine the model and validate findings across a wider range of players and conditions.