Cthulhu is no longer a fork. Now it is a screen reader written in Golang.

internal/sound/tone_test.go

@@ -0,0 +1,19 @@
+// Copyright (c) 2026 Storm Dragon
+// Authors: Storm Dragon, Angus Kola
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package sound
+
+import (
+	"crypto/sha256"
+	"fmt"
+	"testing"
+)
+
+func TestTonePreservesSpeechAudio(t *testing.T) {
+	// Preserve the accepted speech beep while progress audio follows NVDA.
+	const speechDigest = "2f0184d3deefce36901b9a940d5caefde08e15058898d20c398ad10ad1ce1b94"
+	if got := fmt.Sprintf("%x", sha256.Sum256(speechBeepWAV)); got != speechDigest {
+		t.Fatalf("speech beep audio changed: %s", got)
+	}
+}