Add sample audio output with playable audio in model card

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitattributes

@@ -34,3 +34,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 *.so filter=lfs diff=lfs merge=lfs -text
+*.wav filter=lfs diff=lfs merge=lfs -text

README.md

@@ -138,6 +138,15 @@ These `.so` files are compiled from the `.cpp` sources and are ready to be deplo
    - `Supertonic_TTS_StepbyStep.ipynb`
    - `Correlation_Verification.ipynb`
 
+## Sample Output
+
+Audio generated on QCS6490 board using quantized models (10 diffusion steps, noise-reduced):
+
+<audio controls>
+  <source src="final_output.wav" type="audio/wav">
+  Your browser does not support the audio element.
+</audio>
+
 ## Note
 
 > Inference script and sample application are not provided. Optimization work is ongoing and will be released soon.

final_output.wav

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b5322f5b5144f72e4c89d9530c306b7a1a3f2f35cfdf1f19b98ded735df1649a
+size 441044