Fix bug 2449814

 Reduced the amount of filtering and amplification at the output
 of the Pico TTS engine v1.1.0.2

Change-Id: I89f577b5e94e171b4ed892faffb863f19428cc1a

1 files changed, 4 insertions, 4 deletions

diff --git a/packages/TtsService/src/android/tts/SynthProxy.java b/packages/TtsService/src/android/tts/SynthProxy.java
index 6255275..71f2e8f 100755
--- a/packages/TtsService/src/android/tts/SynthProxy.java
+++ b/packages/TtsService/src/android/tts/SynthProxy.java
@@ -36,9 +36,9 @@ public class SynthProxy {
     // Such a huge filter gain is justified by how much energy in the low frequencies is "wasted" at
     // the output of the synthesis. The low shelving filter removes it, leaving room for
     // amplification.
-    private final static float PICO_FILTER_GAIN = 5.5f; // linear gain
-    private final static float PICO_FILTER_LOWSHELF_ATTENUATION = -18.0f; // in dB
-    private final static float PICO_FILTER_TRANSITION_FREQ = 1100.0f;     // in Hz
+    private final static float PICO_FILTER_GAIN = 4.0f; // linear gain
+    private final static float PICO_FILTER_LOWSHELF_ATTENUATION = -16.0f; // in dB
+    private final static float PICO_FILTER_TRANSITION_FREQ = 1000.0f;     // in Hz
     private final static float PICO_FILTER_SHELF_SLOPE = 1.0f;            // Q
 
     //
@@ -50,7 +50,7 @@ public class SynthProxy {
      */
     public SynthProxy(String nativeSoLib) {
         boolean applyFilter = nativeSoLib.toLowerCase().contains("pico");
-        Log.v(TtsService.SERVICE_TAG, "about to load "+ nativeSoLib + ", applyFilter="+applyFilter);
+        Log.v(TtsService.SERVICE_TAG, "1000 about to load "+ nativeSoLib + ", applyFilter="+applyFilter);
         native_setup(new WeakReference<SynthProxy>(this), nativeSoLib);
         native_setLowShelf(applyFilter, PICO_FILTER_GAIN, PICO_FILTER_LOWSHELF_ATTENUATION,
                 PICO_FILTER_TRANSITION_FREQ, PICO_FILTER_SHELF_SLOPE);