26 Oct
2011
26 Oct
'11
3:52 p.m.
On Tue, Oct 25, 2011 at 4:52 PM, pod <_(a)whats-your.name> wrote:
This looks good to study--that analog board has great noise characteristics.
And the IC uses I2S, another standard bus that could be good to use.
Overall, what I'm most impressed by is their timeline--completed the
device plus linux drivers in about 1 year.
DA interface
project that I found some months ago..
vaguely rings a bell. more recently ive seen SDR-Widget, as radio is quite demanding of
ADC noise-floor quietness, flatness - eg most Intel HDA cards are not really capable of
192khz sampling with a fixed ~22KHz brickwall LPF (prevent aliasing at low samplerates)
which isnt switched to a different LPF at higher rates (cost reasons presumably) and even
"good" cards like emu 0202 could be improved upon..
http://sdr-widget.googlecode.com/files/Draft4_Sound_card_noise_floor_compar…