Keep short commands after wake activation

station/main.go

@@ -289,7 +289,8 @@ func exchange(url, token string, live *liveReader, fileAudio []byte, wakeAudio [
 		const prerollSamples = rate
 		pre := make([]int16, 0, prerollSamples+hop)
 		pre = append(pre, wakeAudio...)
-		var frames, lastVoice, voiced, sent int
+		var frames, voiced, sent int
+		lastVoice := -9
 		var peakRMS float64
 		heard := false
 		for ; frames < int(max/(10*time.Millisecond)); frames++ {
@@ -306,8 +307,14 @@ func exchange(url, token string, live *liveReader, fileAudio []byte, wakeAudio [
 			s := audio.pcm
 			level := rms(s)
 			peakRMS = math.Max(peakRMS, level)
+			voiceStart := false
 			if level >= threshold {
 				voiced++
+				// Short commands after activation can have quiet gaps between
+				// syllables. Require two voiced frames within 80 ms or a strong
+				// frame outside the immediate tail of the wake word.
+				voiceStart = voiced >= 3 || wakeAudio != nil &&
+					(frames-lastVoice <= 8 || frames >= 3 && level >= 2*threshold)
 				lastVoice = frames
 			} else {
 				voiced = 0
@@ -318,7 +325,7 @@ func exchange(url, token string, live *liveReader, fileAudio []byte, wakeAudio [
 					copy(pre, pre[len(pre)-prerollSamples:])
 					pre = pre[:prerollSamples]
 				}
-				if voiced < 3 {
+				if !voiceStart {
 					continue
 				}
 				_ = c.SetWriteDeadline(time.Now().Add(2 * time.Second))