Export spleeter model to onnx for source separation (#2237)

scripts/spleeter/run.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+
+if [ ! -f 2stems.tar.gz ]; then
+  curl -SL -O https://github.com/deezer/spleeter/releases/download/v1.4.0/2stems.tar.gz
+fi
+
+if [ ! -d ./2stems ]; then
+  mkdir -p 2stems
+  cd 2stems
+  tar xvf ../2stems.tar.gz
+  cd ..
+fi
+
+ls -lh
+
+ls -lh 2stems
+
+if [ ! -f 2stems/frozen_vocals_model.pb ]; then
+  python3 ./convert_to_pb.py \
+    --model-dir ./2stems \
+    --output-node-names vocals_spectrogram/mul \
+    --output-filename ./2stems/frozen_vocals_model.pb
+fi
+
+ls -lh 2stems
+
+if [ ! -f 2stems/frozen_accompaniment_model.pb ]; then
+  python3 ./convert_to_pb.py \
+    --model-dir ./2stems \
+    --output-node-names accompaniment_spectrogram/mul \
+    --output-filename ./2stems/frozen_accompaniment_model.pb
+fi
+
+ls -lh 2stems
+
+python3 ./convert_to_torch.py --name vocals
+python3 ./convert_to_torch.py --name accompaniment
+python3 ./export_onnx.py
+
+ls -lh 2stems