Fix done condition in playActivationSound and improve timing of loops

audio.go

@@ -84,11 +84,16 @@ func playActivationTone(ctx *malgo.AllocatedContext) error {
 
 	// Create new channel waiting for completion
 	done := make(chan bool)
+	doneVar := false
 	onSamples := func(output, _ []byte, _ uint32) {
 		// Read as much audio into output as will fit
 		n, err := io.ReadFull(wavReader, output)
 		// If error occurred or no bytes read
-		if err != nil || n == 0 {
+		if !doneVar && (err != nil || n == 0) {
+			if *verbose {
+				log.Debug().Msg("Sample output complete")
+			}
+			doneVar = true
 			// Signal completion
 			done <- true
 		}

main.go

@@ -45,6 +45,7 @@ func main() {
 	// Define and parse command line flags
 	tfLogLevel := flag.Int("tf-log-level", 2, "Log level for TensorFlow")
 	verbose = flag.BoolP("verbose", "v", false, "Log more events")
+	showDecode := flag.BoolP("show-decode", "d", false, "Show text to speech decodes")
 	configPath := flag.StringP("config", "c", confPath, "Location of trident TOML config")
 	modelPath := flag.StringP("model", "m", filepath.Join(execDir, "deepspeech.pbmm"), "Path to DeepSpeech model")
 	scorerPath := flag.StringP("scorer", "s", filepath.Join(execDir, "deepspeech.scorer"), "Path to DeepSpeech scorer")
@@ -207,7 +208,7 @@ func main() {
 	// Create goroutine to clean stream every minute
 	go func() {
 		for {
-			time.Sleep(time.Minute)
+			time.Sleep(20*time.Second)
 			// Lock mutex of stream
 			safeStream.Lock()
 			// Reset stream and buffer
@@ -223,7 +224,7 @@ func main() {
 	var tts string
 	listenForActivation := true
 	for {
-		time.Sleep(time.Second)
+		time.Sleep(200*time.Millisecond)
 		// Convert captured raw audio to slice of int16
 		slice, err := convToInt16Slice(captured)
 		if err != nil {
@@ -240,6 +241,9 @@ func main() {
 		if err != nil {
 			log.Fatal().Err(err).Msg("Error intermediate decoding stream")
 		}
+		if *showDecode {
+			log.Debug().Msg("TTS Decode: " + tts)
+		}
 		// If decoded string contains activation phrase and listenForActivation is true
 		if strings.Contains(tts, config.ActivationPhrase) && listenForActivation {
 			// Play activation tone