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Tweak Modulator to align FST280 Tx start times properly. Still a possible issue with 5-min sequences?

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This commit is contained in:
Joe Taylor 2020-06-23 15:10:29 -04:00
parent 344b9c11f3
commit 503c2cc242
1 changed files with 16 additions and 10 deletions
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26
Modulator/Modulator.cpp
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@ -69,8 +69,13 @@ void Modulator::start (unsigned symbolsLength, double framesPerSymbol,
m_bFastMode=fastMode;
m_TRperiod=TRperiod;
unsigned delay_ms=1000;
if(m_nsps==1920) delay_ms=500; //FT8
if(m_nsps==576) delay_ms=300; //FT4
if(m_nsps==1920) delay_ms=500; //FT8
if(m_nsps==576) delay_ms=300; //FT4
if(m_nsps==800) delay_ms=750; //FST280-15
if(m_nsps==1680) delay_ms=650; //FST280-30
if(m_nsps==4000) delay_ms=450; //FST280-60
if(m_nsps==8400) delay_ms=250; //FST280-120
if(m_nsps==21504) delay_ms=50; //FST280-300
// noise generator parameters
if (m_addNoise) {
@ -79,22 +84,22 @@ void Modulator::start (unsigned symbolsLength, double framesPerSymbol,
if (m_snr > 1.0) m_fac = 3000.0 / m_snr;
}
m_ic=0;
// round up to an exact portion of a second that allows for startup delays
m_ic = (mstr / delay_ms) * m_frameRate * delay_ms / 1000;
if(m_bFastMode) m_ic=0;
if(delay_ms > 0 and !m_bFastMode) {
m_ic = (mstr/delay_ms) * m_frameRate * delay_ms / 1000;
}
if(m_nsps==21504) m_ic=int(0.8*48000); //FST280-300
m_silentFrames = 0;
// calculate number of silent frames to send, so that audio will start at
// the nominal time "delay_ms" into the Tx sequence.
if (synchronize && !m_tuning && !m_bFastMode) {
m_silentFrames = m_ic + m_frameRate / (1000 / delay_ms) - (mstr * (m_frameRate / 1000));
if(delay_ms >= mstr) m_silentFrames = m_ic + 0.001*(delay_ms-mstr)*m_frameRate;
}
// qDebug() << "aa" << QDateTime::currentDateTimeUtc().toString("hh:mm:ss.zzz")
// << m_ic << m_silentFrames << m_silentFrames/48000.0
// << mstr << fmod(double(ms0),1000.0*m_period);
// << delay_ms << mstr << m_silentFrames << m_ic;
initialize (QIODevice::ReadOnly, channel);
Q_EMIT stateChanged ((m_state = (synchronize && m_silentFrames) ?
@ -152,7 +157,8 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
qint16 * end (samples + numFrames * (bytesPerFrame () / sizeof (qint16)));
qint64 framesGenerated (0);
// if(m_ic==0) qDebug() << "Modulator::readData" << 0.001*(QDateTime::currentMSecsSinceEpoch() % (1000*m_TRperiod));
// if(m_ic==0) qDebug() << "aa" << 0.001*(QDateTime::currentMSecsSinceEpoch() % qint64(1000*m_TRperiod))
// << m_state << m_TRperiod << m_silentFrames << m_ic << foxcom_.wave[m_ic];
switch (m_state)
{