How Low Can You Go?

Oct 1, 2008 12:00 PM, Compiled by Sarah Benzuly


Education Guide

Mix is gearing up to present its longstanding annual Audio Education Guide in its November 2014 issue. Want to have your school listed in the directory, or do you need to update your current directory listing? Add an image, program description, or a logo to your listing! Get your school in the Mix Education Guide 2014.

Tim Storms

On August 12, Tim Storms (right) broke both of his current Guinness world records for “the lowest note produced by a human” and “widest vocal range for a male.” Measurements taken at Citywalk Studio with engineer Mark Owen were performed using a Bruel & Kjaer Type 2270 sound analyzer with a Type 4189 mic with a LF extension adapter, which lowered the -1dB cut-off frequency of the mic from 7 Hz to 1.5 Hz. The data was saved to the analyzer's SD memory card and sent to Bruel & Kjaer for analysis (performed by Jim Weir, a senior application engineer at the company).

For the low-frequency trials, the analyzer was set up to measure maximum and exponentially averaged FFT spectrum with a frequency span of 100 Hz and 400 lines of analysis. In addition, five ambient noise-level measurements were performed. The data collected showed that Storms can produce acoustic output below 1 Hz (the lowest frequency recorded was 0.7973 Hz) in repeatable trials.

During the widest-range trials, the analyzer was set up to measure the FFT spectrum in a maximum hold mode. A frequency span of 5 kHz was used with 6,400 lines of analysis. The highest pitch recorded was at a fundamental frequency of just over 800 Hz.

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