October 2006
Beginner to intermediate
416 pages
13h 58m
English
Content preview from Loudspeakers
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Chapter 9
Subjective and objective assessment
9.1 The general situation
The human hearing system is quite extraordinarily sensitive and complex. It has a frequency range of around eleven octaves if one considers physical sensation as part of the process, and a dynamic range such that the lowest audible sounds have power levels of only 10−12 compared to the loudest sounds before the threshold of pain in the ears. That is a power ratio of one million, million times (one trillion in American English). At the lowest detectable sound pressure levels, the lateral movement of the ear drum, (or tympanic membrane) is less than the diameter of a hydrogen molecule, and if the average ear were only 9 or 10 decibels more sensitive, we would experience a ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.