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| author | Jean-Michel Trivi <jmtrivi@google.com> | 2009-09-01 10:22:51 -0700 |
|---|---|---|
| committer | Jean-Michel Trivi <jmtrivi@google.com> | 2009-09-01 13:46:43 -0700 |
| commit | 3218471bcdfc87b2267f68d18522bdaf1d351120 (patch) | |
| tree | 9cdede81e943996d6a91823722de8948d3ef75a9 /packages/TtsService | |
| parent | a01726a7fdd872cd8e1e8a9dfa52fb9cdbf01019 (diff) | |
| download | frameworks_base-3218471bcdfc87b2267f68d18522bdaf1d351120.zip frameworks_base-3218471bcdfc87b2267f68d18522bdaf1d351120.tar.gz frameworks_base-3218471bcdfc87b2267f68d18522bdaf1d351120.tar.bz2 | |
Modify the gain after filtering to prevent TTS clipping in en-US.
Diffstat (limited to 'packages/TtsService')
| -rw-r--r-- | packages/TtsService/jni/android_tts_SynthProxy.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/packages/TtsService/jni/android_tts_SynthProxy.cpp b/packages/TtsService/jni/android_tts_SynthProxy.cpp index 071a90d..0ec8dab 100644 --- a/packages/TtsService/jni/android_tts_SynthProxy.cpp +++ b/packages/TtsService/jni/android_tts_SynthProxy.cpp @@ -41,7 +41,7 @@ #define FILTER_LOWSHELF_ATTENUATION -18.0f // in dB #define FILTER_TRANSITION_FREQ 1100.0f // in Hz #define FILTER_SHELF_SLOPE 1.0f // Q -#define FILTER_GAIN 6.0f // linear gain +#define FILTER_GAIN 5.5f // linear gain // such a huge 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. |