Use AudioMath for pitch to frequency conversion.

Fix ListDevices default.
Cleanup interpolator in AutoCorrelator.
Remove empty string from SubtractiveSynth library.

2 files changed, 3 insertions, 11 deletions

diff --git a/tests/com/jsyn/examples/ListAudioDevices.java b/tests/com/jsyn/examples/ListAudioDevices.java
index 6c5372d..dceaa0d 100644
--- a/tests/com/jsyn/examples/ListAudioDevices.java
+++ b/tests/com/jsyn/examples/ListAudioDevices.java
@@ -33,7 +33,7 @@ public class ListAudioDevices {
             int maxInputs = audioManager.getMaxInputChannels(i);
             int maxOutputs = audioManager.getMaxInputChannels(i);
             boolean isDefaultInput = (i == audioManager.getDefaultInputDeviceID());
-            boolean isDefaultOutput = (i == audioManager.getDefaultInputDeviceID());
+            boolean isDefaultOutput = (i == audioManager.getDefaultOutputDeviceID());
             System.out.println("#" + i + " : " + deviceName);
             System.out.println("  max inputs : " + maxInputs
                     + (isDefaultInput ? "   (default)" : ""));
diff --git a/tests/com/jsyn/examples/PlayChords.java b/tests/com/jsyn/examples/PlayChords.java
index 0b1ae2e..28cab5f 100644
--- a/tests/com/jsyn/examples/PlayChords.java
+++ b/tests/com/jsyn/examples/PlayChords.java
@@ -22,6 +22,7 @@ import com.jsyn.instruments.SubtractiveSynthVoice;
 import com.jsyn.unitgen.LineOut;
 import com.jsyn.unitgen.UnitVoice;
 import com.jsyn.util.VoiceAllocator;
+import com.softsynth.math.AudioMath;
 import com.softsynth.shared.time.TimeStamp;
 
 /**
@@ -167,21 +168,12 @@ public class PlayChords {
     }
 
     private void noteOn(double time, int noteNumber) {
-        double frequency = convertPitchToFrequency(noteNumber);
+        double frequency = AudioMath.pitchToFrequency(noteNumber);
         double amplitude = 0.2;
         TimeStamp timeStamp = new TimeStamp(time);
         allocator.noteOn(noteNumber, frequency, amplitude, timeStamp);
     }
 
-    /**
-     * Calculate frequency in Hertz based on MIDI pitch. Middle C is 60.0. You can use fractional
-     * pitches so 60.5 would give you a pitch half way between C and C#.
-     */
-    double convertPitchToFrequency(double pitch) {
-        final double concertA = 440.0;
-        return concertA * Math.pow(2.0, ((pitch - 69) * (1.0 / 12.0)));
-    }
-
     public static void main(String[] args) {
         new PlayChords().test();
     }