Add background music handling instructions to Realtime prompting guide

Author: minh-hoque

examples/Realtime_prompting_guide.ipynb

@@ -993,6 +993,32 @@
     "In this example, the model asks for clarification after my *(very)* loud cough and unclear audio."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "e0ce8f30",
+   "metadata": {},
+   "source": [
+    "## Background Music or Sounds\n",
+    "Occasionally, the model may generate unintended background music, humming, rhythmic noises, or sound-like artifacts during speech generation. These artifacts can diminish clarity, distract users, or make the assistant feel less professional. The following instructions helps prevent or significantly reduce these occurrences.\n",
+    "\n",
+    "- **When to use**: Use when you observe unintended musical elements or sound effects in Realtime audio responses.\n",
+    "- **What it does**: Steers the model to avoid generating these unwanted audio artifacts.s\n",
+    "- **How to adapt**: Adjust the instruction to try to explicitly suppress the specific sound patterns you are encountering."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "c22c1c32",
+   "metadata": {},
+   "source": [
+    "### Example\n",
+    "```\n",
+    "# Instructions/Rules\n",
+    "...\n",
+    "- Do not include any sound effects or onomatopoeic expressions in your responses.\n",
+    "```"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "ea96cb72",