You can hear mastering engineer Ian Shepherd's talk from the 2013 AES convention here.
Video: http://productionadvice.co.uk/ian-shepherd-aes-mexico/ Audio only (mp3): https://dl.dropboxusercontent.com/u/8441718/PA/AES%20Mexico%20Talk%20-%20Audio%20Version.mp3The talk was called Lust for level Audio perception and the battle for great sound, talking about the Loudness Wars but also the crucial role levels play at every stage of the recording, mixing and mastering process.
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