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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
View File
@@ -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++;
gr-jay/lib/peak_detect_impl.h
+12 -5
View File
@@ -31,19 +31,20 @@ namespace jay {
struct Peak
{
Peak()
: Peak(0, 0, 0, 0.0, 0.0)
: Peak(0, 0, 0, 0.0, 0.0, 0.0)
{
}
Peak(uint64_t _id, int _pos)
: Peak(_id, _pos, 0, 0.0, 0.0)
Peak(uint64_t _id, int _pos, float frequency)
: Peak(_id, _pos, 0, frequency, 0.0, 0.0)
{
}
Peak(uint64_t _id, int _pos, int _pbh, float _height_rel, float _height_abs)
Peak(uint64_t _id, int _pos, int _pbh, float _frequency, float _height_rel, float _height_abs)
: id(_id)
, pos(_pos)
, pbh(_pbh)
, frequency(_frequency)
, height_rel(_height_rel)
, height_abs(_height_abs)
{
@@ -54,6 +55,7 @@ namespace jay {
int pbh;
float height_rel;
float height_abs;
float frequency;
bool isInRange(const Peak &other) const
{
@@ -153,6 +155,7 @@ namespace jay {
float alpha = (1.f-beta);
float pos_f = alpha*(float)pos + beta*(float)other.pos;
float pbh_f = alpha*(float)pbh + beta*(float)other.pbh;
float frequency = alpha*(float)frequency + beta*(float)other.frequency;
pos = (int)(pos_f + 0.5f);
pbh = (int)(pbh_f + 0.5f);
height_rel = other.height_rel;
@@ -175,6 +178,7 @@ namespace jay {
pmt::pmt_t dict = pmt::make_dict();
dict = pmt::dict_add(dict, pmt::string_to_symbol(std::string("id")), pmt::from_long(id));
dict = pmt::dict_add(dict, pmt::string_to_symbol(std::string("pos")), pmt::from_long(pos));
dict = pmt::dict_add(dict, pmt::string_to_symbol(std::string("freq_Hz")), pmt::from_float(frequency));
dict = pmt::dict_add(dict, pmt::string_to_symbol(std::string("height")), pmt::from_float(height_rel));
dict = pmt::dict_add(dict, pmt::string_to_symbol(std::string("state")), pmt::from_long(state));
@@ -222,7 +226,10 @@ namespace jay {
return !found;
}
int m_vlen;
float m_framerate;
float m_bandwidth;
float m_fcenter;
float m_peak_height_min;
int m_peak_width_min;
int m_peak_width_max;
@@ -245,7 +252,7 @@ namespace jay {
pmt::pmt_t m_msg_port_out;
public:
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(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);
~peak_detect_impl();
// Where all the action really happens