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great little essay, nice link (thanks)
I enjoy this explanation, which is difficult to put into words so regualr folks understand. A PWM class D amplifier is not processing ones and zeros, it's in a kind of "always on always off" state, so it's certainly binary, but not digital...
See here from the link above:
The 'digital' output uses standard logic levels, where 0V is a logic '0' and 5V is a logic '1'. Because of this digitisation of the signal, PWM amps are sometimes erroneously referred to as digital amps. In fact, the entire process is far more analogue than digital.
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Found this in my in-box yesterday. TI has released the first PWM audio amp chip with a non-open loop digital modulator.
http://www.ti.com/corp/docs/landing/...+EM+tas5706-em
Not that DIY'ers are quite up to this... -
This is also an experiment in a different way to put together a long complex formatted post with the content creation working offline, and imported as images.
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Just ordered; should be in by Monday. These are just starting to become available in the US. I've been looking for something with above average performance but not over $2K, unlike my last two DACs, which while quite satisfactory from a performance perspective, are rather pricey for most of my friends....
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I debated not posting this, since we already have the information released here, but it's good info for all.
Official full press release here, with links to pictures, specs, etc:
http://www.gspr.com/parasound/zcd.html... -
"Dolby Laboratories Unveils Dolby Pro Logic IIx
posted by Chairman Steve - 2003-09-02
Technology provides up to 7.1 channels for stereo and 5.1-channel content
Indianapolis, September 2, 2003—Expanding upon its tradition of leadership in providing enhanced...
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