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- Peak detector delivers frequency instead of bin

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git-svn-id: http://moon:8086/svn/software/trunk/projects/GnuRadio@492 b431acfa-c32f-4a4a-93f1-934dc6c82436
This commit is contained in:
jens
2019-05-28 17:19:19 +00:00
parent 315932ea4e
commit dc6485e73f
6 changed files with 73 additions and 18 deletions
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gr-jay/lib/peak_detect_impl.cc
+12 -4
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@@ -29,20 +29,23 @@ namespace gr {
namespace jay {
peak_detect::sptr
peak_detect::make(int vlen, float framerate, float peak_height_min, int peak_width_min, int peak_width_max, float alpha_s, float alpha_m)
peak_detect::make(int vlen, float framerate, float bandwidth, float fcenter, float peak_height_min, int peak_width_min, int peak_width_max, float alpha_s, float alpha_m)
{
return gnuradio::get_initial_sptr
(new peak_detect_impl(vlen, framerate, peak_height_min, peak_width_min, peak_width_max, alpha_s, alpha_m));
(new peak_detect_impl(vlen, framerate, bandwidth, fcenter, peak_height_min, peak_width_min, peak_width_max, alpha_s, alpha_m));
}
/*
* The private constructor
*/
peak_detect_impl::peak_detect_impl(int vlen, float framerate, float peak_height_min, int peak_width_min, int peak_width_max, float alpha_s, float alpha_m)
peak_detect_impl::peak_detect_impl(int vlen, float framerate, float bandwidth, float fcenter, float peak_height_min, int peak_width_min, int peak_width_max, float alpha_s, float alpha_m)
: gr::sync_block("peak_detect"
, gr::io_signature::make(1, 1, vlen*sizeof(float))
, gr::io_signature::make(2, 2, vlen*sizeof(float)))
, m_vlen(vlen)
, m_framerate (framerate)
, m_bandwidth (bandwidth)
, m_fcenter (fcenter)
, m_peak_height_min (peak_height_min)
, m_peak_width_min (peak_width_min)
, m_peak_width_max (peak_width_max)
@@ -230,7 +233,12 @@ namespace gr {
}
else
{
Peak peak(m_peak_id++, pos);
// pos = float(peak['pos'] - self.nfft / 2)
// freq_Hz = self.fcenter + 1.0 / self.nfft * self.bandwidth * pos
float pos_shifted = (float)(pos-m_vlen/2);
float freq_Hz = m_fcenter + m_bandwidth*pos_shifted/m_vlen;
Peak peak(m_peak_id++, pos, freq_Hz);
peak.height_rel = m_pXds[pos];
addToListByPos(peaks, peak);
numPeaksClimbed++;