Analysis of just Noticeable Difference in Spectrum of Church Bell Sound

Abstract

Bells are specific sound sources. They have distinct, but, unlike musical instruments, inharmonious partials. These partials arise from modes of vibration of the bell and depend on dimensions and potential irregularities of the bell. Therefore, the question of a just noticeable difference in the church bell sound is of great importance. Analysis of subjective tests with synthetic sounds of two bells, different in size, is described in this paper. We report results for a just noticeable difference of partial frequency in the range 10-15 cents. Frequency dependence, is also, noticed.

Keywords

• church bell
• just noticeable difference
• subjective test