Frequency calibration for tonal analysis

The basic principle of frequency calibration is simple. If a reference tone of known frequency is available, it can be recorded along with the bell sound. When the bell sound is later analysed, the frequency of the reference tone is checked at the same time. If there is a discrepancy, work out the ratio of […]

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Tonal analysis from recordings

This page explains how to do tonal analysis of a bell or bells using Wavanal. Analysis of recordings is possible using any spectrum analysis package (including the spectrum analyser included in Audacity) but Wavanal has facilities specially optimised for investigating bell sounds. If starting with a recording of multiple bells, for example all the bells […]

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Recording and analysis

The pages linked below give practical tips on recording bells for the purposes of tonal analysis (including taking recordings from Youtube, and how to do the tonal analysis with Wavanal. The detail given in previous version of these pages (written almost 20 years ago) on recording formats and recording devices has been completely re-written and […]

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Recording bells for analysis

This page was originally written in October 2002, and has been substantially updated to only cover recording bells for tonal analysis, not recordings for general purposes. Also, audio technology has moved a long way since 2002! Andrew Wilby suggested I wrote the original paper. It included extracts from messages originally published on the Bell Historian’s chat […]

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