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Musical instrument directivity measurements

Over the past several decades, researchers have developed various techniques to measure directional radiation patterns of musical instruments. After summarizing and categorizing several of them, this presentation will focus on recent developments made by the authors to measure directivities with high angular resolution. The frequency-dependent patterns of 16 played musical instruments were acquired using 2522 unique microphone positions over a sphere in an anechoic chamber. This led to associated frequency-dependent spherical-harmonic expansions with readily shareable coefficients. Several steps were implemented to improve and validate the measurements, and make their costs manageable. The presentation will discuss key results and future directions.Over the past several decades, researchers have developed various techniques to measure directional radiation patterns of musical instruments. After summarizing and categorizing several of them, this presentation will focus on recent developments made by the authors to measure directivities with high angular resolution. The frequency-dependent patterns of 16 played musical instruments were acquired using 2522 unique microphone positions over a sphere in an anechoic chamber. This led to associated frequency-dependent spherical-harmonic expansions with readily shareable coefficients. Several steps were implemented to improve and validate the measurements, and make their costs manageable. The presentation will discuss key results and future directions.