Real-Time Calculation of the Frequency Dependent Directivity Index/Patterns of a Classical Singer
* Presenting author
Directivity of speech and singing is primarily determined by the physiology of a person and therefore by the head size, torso dimensions and posture. Previous works have concluded that in singing only the intentional spectral (due to the singer's formant) defines the directionality of a singing in an room acoustical sense. Nevertheless, our work has investigated the singing technique of a classical singer while singing at steady pitch for one specific vowel which is in contrast to average over several words. This paper shows the results of a real time analysis of 64-channel recordings made with a spherical microphone setup to identify the variations in directivity in singing due the change of the singing technique. We calculate the directivity indexes in real-time evaluated at the fundamental frequency and its harmonics to gain robust information. The short-term data is then compared to results calculated from long-term averaged spectra.