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PSKR metric 

* Fixed erroneous metric computation when received signal is zero
    - error apparant when testing with CODEC that has no applied audio
    - bug report by Per Crusfalk, SM0RWO
pull/4/head
David Freese 2016-01-13 20:16:30 -06:00
rodzic 68c5a6a084
commit ddb084c599
1 zmienionych plików z 12 dodań i 8 usunięć
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20
src/psk/psk.cxx
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@ -1228,22 +1228,26 @@ void psk::rx_symbol(cmplx symbol, int car)
// simple low pass filter for quality of signal
double decay = SQLDECAY;
double attack = SQLDECAY;
double cval = cos(n*phase);
double sval = sin(n*phase);
if (_8psk) {
attack *= 2;
decay *= 4;
}
if (_pskr) {
attack *= 2;
decay *= 10;
}
quality = cmplx(
decayavg(quality.real(), cval, decay),
decayavg(quality.imag(), sval, decay));
} else
quality = cmplx(
decayavg(quality.real(), cval, cval > quality.real() ? attack : decay),
decayavg(quality.imag(), sval, sval > quality.real() ? attack : decay));
double cval = cos(n*phase);
double sval = sin(n*phase);
quality = cmplx(
decayavg(quality.real(), cval, cval > quality.real() ? attack : decay),
decayavg(quality.imag(), sval, sval > quality.real() ? attack : decay));
metric = 100.0 * norm(quality);
if (_pskr && (averageamp < 3e-5)) metric = 0;
if (progdefaults.Pskmails2nreport && (mailserver || mailclient)) {
//s2n reporting: rescale depending on mode, clip after scaling