Just to remind anyone in the vacinity, John Vanderkooy and the B+W research centre are holding the following lecture tonight:
Taken from:
http://www.aes.org/sections/uk/aes.htmlQuote: |
Sigma-Delta Modulators: 1-bit with Noise Shaping Taken to the Limit
John Vanderkooy, University of Waterloo & B&W Research Centre 1-bit oversampled digital systems have been around for a long time, resolving a number of issues in digital audio. Only relatively recently, however, have they aspired to high-resolution audio in the DSD specification of the Super Audio CD or SACD. PCM approaches such as DVD-Audio compete with these 1-bit methods. This talk presents what we have learned about 1-bit modulators using high-accuracy computer simulation as regards linearity, signal-to-noise, dither behaviour, audio artefacts, and bit efficiency. The performance can be good, but such systems are somewhat wasteful of bits.
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This is the one lecture I'd really like to attend, but business commitments have got in the way
If any members here manage to get down there, I would be grateful if they could post their observations. Obviously a brief summary will be in the next newsletter, but it would be good to hear the impressions of other attendees.
Cheers,
Justin