Add C# and JavaScript (wasm) API for MatchaTTS models (#1682)

dotnet-examples/offline-tts-play/run-matcha-en.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -ex
+
+
+# please visit
+# https://k2-fsa.github.io/sherpa/onnx/tts/pretrained_models/matcha.html#matcha-icefall-en-us-ljspeech-american-english-1-female-speaker
+# matcha.html#matcha-icefall-en-us-ljspeech-american-english-1-female-speaker
+# to download more models
+if [ ! -f ./matcha-icefall-en_US-ljspeech/model-steps-3.onnx ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/tts-models/matcha-icefall-en_US-ljspeech.tar.bz2
+  tar xf matcha-icefall-en_US-ljspeech.tar.bz2
+  rm matcha-icefall-en_US-ljspeech.tar.bz2
+fi
+
+if [ ! -f ./hifigan_v2.onnx ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/vocoder-models/hifigan_v2.onnx
+fi
+
+dotnet run \
+  --matcha-acoustic-model=./matcha-icefall-en_US-ljspeech/model-steps-3.onnx \
+  --matcha-vocoder=./hifigan_v2.onnx \
+  --tokens=./matcha-icefall-en_US-ljspeech/tokens.txt \
+  --data-dir=./matcha-icefall-en_US-ljspeech/espeak-ng-data \
+  --debug=1 \
+  --output-filename=./matcha-en.wav \
+  --text='Today as always, men fall into two groups: slaves and free men. Whoever does not have two-thirds of his day for himself, is a slave, whatever he may be: a statesman, a businessman, an official, or a scholar.'