add valid config.json metadata; enrich README frontmatter tags

README.md

@@ -1,6 +1,11 @@
----
-license: mit
----
+---
+license: mit
+tags:
+  - audio
+  - voice-activity-detection
+  - axera
+  - axmodel
+---
 # SileroVAD
 
 流式语音端点识别

config.json

@@ -0,0 +1,55 @@
+{
+  "model_type": "axmodel",
+  "framework": "Pulsar2 7.0",
+  "sample_rate": 16000,
+  "chips": {
+    "ax650": {
+      "file": "models/silero_vad_ax650.axmodel",
+      "npu": "NPU3",
+      "board": "AX650N"
+    },
+    "ax630c": {
+      "file": "models/silero_vad_ax630c.axmodel",
+      "npu": "NPU2",
+      "board": "AX630C (AX620E)"
+    }
+  },
+  "inputs": [
+    {
+      "name": "data",
+      "shape": [
+        1,
+        640
+      ],
+      "dtype": "float32"
+    },
+    {
+      "name": "state",
+      "shape": [
+        2,
+        1,
+        128
+      ],
+      "dtype": "float32"
+    }
+  ],
+  "outputs": [
+    {
+      "name": "output",
+      "shape": [
+        1,
+        1
+      ],
+      "dtype": "float32"
+    },
+    {
+      "name": "next_state",
+      "shape": [
+        2,
+        1,
+        128
+      ],
+      "dtype": "float32"
+    }
+  ]
+}