From 08c70527f7dada80a57fc69b8ed7f5892a9608d2 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Sat, 23 Jun 2012 20:37:09 +0000
Subject: simplified freq. code

---
diff --git a/plugins/audio_sensors/audio_sensors.py b/plugins/audio_sensors/audio_sensors.py
index 0a7fb81..0ec383c 100644
--- a/plugins/audio_sensors/audio_sensors.py
+++ b/plugins/audio_sensors/audio_sensors.py
@@ -320,10 +320,7 @@ class Audio_sensors(Plugin):
         ''' return index of max value in fft of mic in values '''
         if not PITCH_AVAILABLE or not self._status:
             return 0
-        buf = []
-        for i in range(4):
-            buf = append(
-                buf, self.ringbuffer[channel].read(None, self.input_step))
+        buf = self.ringbuffer[channel].read(None, self.input_step)
         if len(buf) > 0:
             buf = rfft(buf)
             buf = abs(buf)
@@ -331,9 +328,9 @@ class Audio_sensors(Plugin):
             if maxi == 0:
                 pitch = 0
             else:  # Simple interpolation
-                a, b, c = buf[maxi - 4], buf[maxi], buf[maxi + 4]
-                maxi -= (4. * a) / float(a + b + c)
-                maxi += (4. * c) / float(a + b + c)
+                a, b, c = buf[maxi - 1], buf[maxi], buf[maxi + 1]
+                maxi -= a / float(a + b + c)
+                maxi += c / float(a + b + c)
                 pitch = maxi * 48000 / (len(buf) * 2)
             
             self._parent.lc.update_label_value('pitch', pitch)
--
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