[Performous-commit] Lasse Karkkainen : Simple post-filtering to remove some noise.

[Lasse Kärkkäi. <tr...@us...>]

Module: editor
Branch: master
Commit: 0d98609cc5bcd73cc143fb16381376e1d558f304

Author: Lasse Karkkainen <tro...@tr...>
Date:   Tue Feb  8 15:57:00 2011 +0100

Simple post-filtering to remove some noise.

---

 pitch.cc    |    2 +-
 pitchvis.cc |    4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/pitch.cc b/pitch.cc
index 85d159d..903eeb2 100644
--- a/pitch.cc
+++ b/pitch.cc
@@ -82,7 +82,7 @@ void Analyzer::calcTones() {
 	Combos combos;
 	for (size_t k = kMin; k < kMax; ++k) {
 		Peak const& p = m_peaks[k];
-		bool ok = p.level > 1e-4 && p.freq >= FFT_MINFREQ && p.freq <= FFT_MAXFREQ;
+		bool ok = p.level > 1e-6 && p.freq >= FFT_MINFREQ && p.freq <= FFT_MAXFREQ;
 		if (!ok) continue;
 		// Do we need to add a new Combo (rather than using the last one)?
 		if (combos.empty() || !combos.back().match(p.freq)) combos.push_back(Combo());
diff --git a/pitchvis.cc b/pitchvis.cc
index 2151e6f..92bcaea 100644
--- a/pitchvis.cc
+++ b/pitchvis.cc
@@ -74,16 +74,18 @@ void PitchVis::run()
 					for (Tone const* n = &*it2; n; n = n->next) { tones.push_back(n); }
 					if (tones.size() < 3) continue;  // Too short tone, ignored
 					PitchPath path(ch);
+					double score = 0.0;
 					Analyzer::Moments::const_iterator momit = mit[ch];
 					// Store path used for rendering
 					for (unsigned i = 0; i < tones.size(); ++i, ++momit) {
 						float t = momit->m_time;
 						float n = scale.getNote(tones[i]->freq);
 						float level = level2dB(tones[i]->level);
+						score += tones[i]->level;
 						path.fragments.push_back(PitchFragment(t, n, level));
 					}
 					QMutexLocker locker(&mutex);
-					paths.push_back(path);
+					if (score > 1.0) paths.push_back(path);
 					moreAvailable = true;
 				}
 			}