US Election Assistance Commission - Voluntary Voting System Guidelines Vote
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Name :   Alfie Charles
Organization :   Sequoia Voting Systems
Post Date :   9/30/2005

Section Comments
Section :  2.2.7.2.2.3.6
Page no. :  2-20
Line no.:  19-22
Comment :  This section is ambiguous and would benefit from additional clarification.

Specifically, "A maximum of 105 dB SPL" can mean either:
(a)  "A maximum volume of AT LEAST 105 dB SPL",  
(b)  "A maximum volume NOT TO EXCEED 105 dB SPL", or
(c)  "A maximum volume of EXACTLY 105 dB SPL".
It would be preferred, and a first step towards a testable requirement, if the maximum was stated as either "between X and Y dB SPL" or "X +/- Y dB SPL".  Next, the method of measurement must be specified.  For example:
 * Raw amplitude?
 * A-weighted?
 * Single tone?  If so, what frequency?
 * Actual voice?  If so, peak or average?
 * Since stereo headphones are providing equal power to each earpiece, is the measurement to be on one or both?
 * Distance between earpiece and test device?

And finally, how this requirement applied if the voter is using a personal audio assistive device, per 2.2.3.1?