Persist quieter output and open recognition only after speech

station/main.go

@@ -353,10 +353,10 @@ func exchange(url, token string, live *liveReader, fileAudio []byte, threshold f
 		return errMuted
 	}
 	_ = c.SetWriteDeadline(time.Now().Add(15 * time.Second))
-	if e = c.WriteJSON(message{Type: "start"}); e != nil {
-		return e
-	}
 	if fileAudio != nil {
+		if e = c.WriteJSON(message{Type: "start"}); e != nil {
+			return e
+		}
 		for len(fileAudio) > 0 {
 			n := 3200
 			if n > len(fileAudio) {
@@ -402,6 +402,10 @@ func exchange(url, token string, live *liveReader, fileAudio []byte, threshold f
 				if voiced < 4 {
 					continue
 				}
+				_ = c.SetWriteDeadline(time.Now().Add(15 * time.Second))
+				if e = c.WriteJSON(message{Type: "start"}); e != nil {
+					return e
+				}
 				heard = true
 				s = pre
 			}

station/pulse.conf

@@ -3,3 +3,4 @@ load-module module-native-protocol-unix socket=/tmp/alice-pulse/native auth-anon
 load-module module-alsa-sink sink_name=station device=hw:0,0 channels=2 rate=48000 format=s16le tsched=0
 load-module module-remap-sink sink_name=music master=station
 set-default-sink station
+set-sink-volume station 39321