4-step student int4: block 16 (rel 0.133, was 0.185 at block 64)

tts4v2_int4/dit_step.onnx

@@ -1,3 +1,3 @@
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tts4v2_int4/quantization.json

@@ -1,41 +1,23 @@
 {
-  "mode": "tts",
-  "bits": 4,
-  "block": 64,
-  "symmetric": true,
-  "graphs": [
-    {
-      "src": "dit_step.onnx",
-      "dst": "dit_step.onnx",
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-      "dst_mb": 388.2,
-      "seconds": 2.3,
-      "kind": "dit",
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-        "corr": 0.9843000646080277
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-      "dst": "vocoder.onnx",
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-      "dst_mb": 7.6,
-      "seconds": 0.1,
-      "kind": "vocoder",
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-    "dst_mb": 395.8,
-    "ratio": 0.582
+ "bits": 4,
+ "block": 16,
+ "symmetric": true,
+ "graphs": [
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+   "name": "dit_step.onnx",
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+   "dst_mb": 405.2,
+   "rel": 0.12577639520168304,
+   "corr": 0.9922141492974914
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+   "dst_mb": 8.7,
+   "rel": 0.1393258422613144,
+   "corr": 0.9923939637192563
   }
+ ],
+ "mean_rel": 0.13255111873149872,
+ "mean_corr": 0.9923040565083738
 }

tts4v2_int4/vocoder.onnx

@@ -1,3 +1,3 @@
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