set azure trailing silence to be as low as possible (#331)

* set trailing silence to be as low as possible * seed with 1 second of silence so the stream can warm up
vocodedev · Aug 3, 2023 · 717514c · 717514c
1 parent af8b7b0
commit 717514c
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/vocode/streaming/output_device/blocking_speaker_output.py b/vocode/streaming/output_device/blocking_speaker_output.py
@@ -32,6 +32,7 @@ def __init__(
             device=int(self.device_info["index"]),
         )
         self._ended = False
+        self.input_queue.put_nowait(self.sampling_rate * b"\x00")
         self.stream.start()
 
     def start(self):

diff --git a/vocode/streaming/synthesizer/azure_synthesizer.py b/vocode/streaming/synthesizer/azure_synthesizer.py
@@ -184,6 +184,11 @@ def create_ssml(
                 "styledegree", str(bot_sentiment.degree * 2)
             )  # Azure specific, it's a scale of 0-2
             voice_root = styled
+        silence = ElementTree.SubElement(
+            voice_root, "{%s}silence" % NAMESPACES.get("mstts")
+        )
+        silence.set("value", "500ms")
+        silence.set("type", "Tailing-exact")
         prosody = ElementTree.SubElement(voice_root, "prosody")
         prosody.set("pitch", f"{self.pitch}%")
         prosody.set("rate", f"{self.rate}%")