19 Jul Analysis of Violin Vibrato based on Measurement and Modelling
Vibrato is a musical effect consisting of periodic changes in the amplitude and frequency of harmonics and commonly used to enhance sound. On the violin, vibrato can be of very different character depending on the desired effect. The purpose of this project was thus to investigate how vibrato and especially its rate and extent affect the amplitude and frequency of the harmonics of a violin note by recording and analysing notes played without and with vibrato and then modelling the amplitude and frequency of each harmonic with sinusoidal functions. The results show for example that the rate affects mainly the frequencies of the amplitude and frequency modulations while the extent determines the amplitude of the frequency modulation and thus the number of resonance frequencies excited.