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The Magnitude of the Frequency Jitter of Acoustic Waves Generated by Wind Instruments Is of Relevance for the Live Performance of Music

Institut für Strukturanalyse/Frankfurt, Holzhausenstraße 48, 60322 Frankfurt, Germany
Academic Editor: C. W. Lim
Acoustics 2021, 3(2), 411-424; https://doi.org/10.3390/acoustics3020027
Received: 10 April 2021 / Revised: 4 June 2021 / Accepted: 10 June 2021 / Published: 12 June 2021
It is shown that a gold-plated device mounted on a tenor saxophone, forming a small bridge between the mouthpiece and the S-bow, can change two characteristics of the radiated sound: (1) the radiated acoustic energy of the harmonics with emission maxima around 1500–3000 Hz, which is slightly reduced for tones played in the lower register of the saxophone; (2) the frequency jitter of all tones in the regular and upper register of the saxophone show a two-fold increase. Through simulated phase-shifted superimpositions of the recorded waves, it is shown that the cancellation of acoustic energy due to antiphase superimposition is significantly reduced in recordings with the bridge. Simulations with artificially generated acoustic waves confirm that acoustic waves with a certain systematic jitter show less cancelling of the acoustic energy under a phase-shifted superimposition, compared to acoustic waves with no frequency jitter; thus, being beneficial for live performances in small halls with minimal acoustic optimization. The data further indicate that the occasionally hearable “rumble” of a wind instrument orchestra with instruments showing slight differences in the frequency of the harmonics might be reduced (or avoided), if the radiated acoustic waves have a systematic jitter of a certain magnitude. View Full-Text
Keywords: wind instruments; frequency jitter; power spectra; acoustic radiation; harmonics; superimposition wind instruments; frequency jitter; power spectra; acoustic radiation; harmonics; superimposition
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MDPI and ACS Style

Rehm, A.M. The Magnitude of the Frequency Jitter of Acoustic Waves Generated by Wind Instruments Is of Relevance for the Live Performance of Music. Acoustics 2021, 3, 411-424. https://doi.org/10.3390/acoustics3020027

AMA Style

Rehm AM. The Magnitude of the Frequency Jitter of Acoustic Waves Generated by Wind Instruments Is of Relevance for the Live Performance of Music. Acoustics. 2021; 3(2):411-424. https://doi.org/10.3390/acoustics3020027

Chicago/Turabian Style

Rehm, Alexander M. 2021. "The Magnitude of the Frequency Jitter of Acoustic Waves Generated by Wind Instruments Is of Relevance for the Live Performance of Music" Acoustics 3, no. 2: 411-424. https://doi.org/10.3390/acoustics3020027

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