Added chord detector simple model + README update

README.md

@@ -40,6 +40,7 @@ uv pip install --python .venv/bin/python -e . --no-deps
 | `beat_this_small0_int8.onnx` | The [Beat This!](https://github.com/CPJKU/beat_this) beat tracker (small model) with int8 weights (3.6 MB), MIT licensed by its authors. |
 | `beat_this_final0_int8.onnx` | The larger Beat This! model (21 MB), an option of the code. |
 | `guitab_e25.onnx`, `guitab_e24.onnx`, `guitab_e19.onnx` | The same models for the browser version. |
+| `chord_model.safetensors`, `chord_model.onnx` | The chord model (135k parameters, 0.5 MB) that names the chords above the tab from the transcribed notes: about 3 in 4 shown chords right on real fingerstyle songs, 9 in 10 on strummed accompaniment. |
 | `config.json` | The version, the models and their files. The Hub counts downloads by it: the code requests it once each time a machine or browser downloads a tab model. |
 
 ## Architecture

chord_model.onnx

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f6f4302592579debd631d4d4338a3e0687bbe868c792ac648f6f470fffe5333a
+size 552555

chord_model.safetensors

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6310a3937c7480b4b52e69f8441a29f9081cd5dca02b5f34f274cf1c5daf5078
+size 542196

config.json

@@ -1,6 +1,6 @@
 {
   "library": "guitab",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "code": "https://github.com/DanieleMorotti/guitab",
   "default_model": "E25",
   "models": {
@@ -9,5 +9,6 @@
     "E19": {"weights": "guitab_e19.safetensors", "onnx": "guitab_e19.onnx", "parameters": "24M"}
   },
   "tab_language_model": "tablm.safetensors",
-  "beat_tracker": {"default": "beat_this_small0_int8.onnx", "large": "beat_this_final0_int8.onnx"}
+  "beat_tracker": {"default": "beat_this_small0_int8.onnx", "large": "beat_this_final0_int8.onnx"},
+  "chord_model": {"weights": "chord_model.safetensors", "onnx": "chord_model.onnx", "parameters": "135k"}
 }