Al 16/01/2013 5:26, En/na Manu Abraham ha escrit:
The simplest and easiest way to achieve commonality between the various
demodulators is to use the existing API and scale whatever documented
demodulators to that scacle, to best possible way, rather than adding more
ambiguity and breakage.
Note that an older version of the linux dvb api documentation clearly
specified the scale to use, i.e. see
http://linuxtv.org/downloads/legacy/old/linux_dvb_api-20020304.pdf
"The bit error rate, as a multiple of 10E-9 , is stored into
*ber. Example: a value of 2500 corresponds to a bit error rate
of 2.5 * 10E-6 or 1 error in 400000 bits."
"The signal-to-noise ratio, as a multiple of 10E-6 dB, is
stored into *snr. Example: a value of 12,300,000 corresponds to a
signal-to-noise ratio of 12.3 dB."
"The signal strength value, as a multiple of 10E-6 dBm, is
stored into *strength. Example: a value of -12,500,000 corresponds to a
signalstrength value of -12.5 dBm."
but for some reason later revisions of the api don't include the scale
Bye
--
Luca
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