first attempt: use Console.Out, but only when s_isOutTextWriterRedirected is false (it's set by Console.SetOut)

Author: adamsitnik

src/libraries/System.Console/src/System/Console.cs

@@ -538,7 +538,7 @@ public static string Title
         [UnsupportedOSPlatform("tvos")]
         public static void Beep()
         {
-            ConsolePal.Beep();
+            ConsolePal.Beep(s_isOutTextWriterRedirected);
         }
 
         [SupportedOSPlatform("windows")]

src/libraries/System.Console/src/System/ConsolePal.Android.cs

@@ -94,7 +94,7 @@ public static string Title
             set => throw new PlatformNotSupportedException();
         }
 
-        public static void Beep() => throw new PlatformNotSupportedException();
+        public static void Beep(bool _) => throw new PlatformNotSupportedException();
 
         public static void Beep(int frequency, int duration) => throw new PlatformNotSupportedException();
 

src/libraries/System.Console/src/System/ConsolePal.Unix.cs

@@ -205,7 +205,7 @@ public static string Title
             }
         }
 
-        public static void Beep()
+        public static void Beep(bool _)
         {
             if (!Console.IsOutputRedirected)
             {

src/libraries/System.Console/src/System/ConsolePal.Wasi.cs

@@ -96,7 +96,7 @@ public static string Title
             set => throw new PlatformNotSupportedException();
         }
 
-        public static void Beep() => throw new PlatformNotSupportedException();
+        public static void Beep(bool _) => throw new PlatformNotSupportedException();
 
         public static void Clear() => throw new PlatformNotSupportedException();
         public static void SetCursorPosition(int left, int top) => throw new PlatformNotSupportedException();

src/libraries/System.Console/src/System/ConsolePal.WebAssembly.cs

@@ -155,7 +155,7 @@ public static string Title
             set => throw new PlatformNotSupportedException();
         }
 
-        public static void Beep() => throw new PlatformNotSupportedException();
+        public static void Beep(bool _) => throw new PlatformNotSupportedException();
 
         public static void Beep(int frequency, int duration) => throw new PlatformNotSupportedException();
 

src/libraries/System.Console/src/System/ConsolePal.Windows.cs

@@ -675,30 +675,18 @@ public static unsafe string Title
             }
         }
 
-        public static void Beep()
+        public static void Beep(bool isOutTextWriterRedirected)
         {
             const char BellCharacter = '\u0007'; // Windows doesn't use terminfo, so the codepoint is hardcoded.
 
-            if (!Console.IsOutputRedirected)
+            if (!Console.IsOutputRedirected && !isOutTextWriterRedirected)
             {
                 Console.Out.Write(BellCharacter);
-                return;
             }
-
-            if (!Console.IsErrorRedirected)
+            else
             {
-                Console.Error.Write(BellCharacter);
-                return;
+                Interop.Kernel32.Beep(frequency: 800, duration: 200);
             }
-
-            BeepFallback();
-        }
-
-        private static void BeepFallback()
-        {
-            const int BeepFrequencyInHz = 800;
-            const int BeepDurationInMs = 200;
-            Interop.Kernel32.Beep(BeepFrequencyInHz, BeepDurationInMs);
         }
 
         public static void Beep(int frequency, int duration)

src/libraries/System.Console/src/System/ConsolePal.iOS.cs

@@ -99,7 +99,7 @@ public static string Title
             set => throw new PlatformNotSupportedException();
         }
 
-        public static void Beep() => throw new PlatformNotSupportedException();
+        public static void Beep(bool _) => throw new PlatformNotSupportedException();
 
         public static void Beep(int frequency, int duration) => throw new PlatformNotSupportedException();