DOC Add audio demo to README (PABannier#93)

README.md

@@ -40,6 +40,12 @@ The original implementation of `bark.cpp` is the bark's 24Khz English model. We
 
 ---
 
+Here are typical audio pieces generated by `bark.cpp`:
+
+https://github.com/PABannier/bark.cpp/assets/12958149/f9f240fd-975f-4d69-9bb3-b295a61daaff
+
+https://github.com/PABannier/bark.cpp/assets/12958149/c0caadfd-bed9-4a48-8c17-3215963facc1
+
 Here is a typical run using Bark:
 
 ```java
@@ -192,15 +198,17 @@ python3 convert.py \
 ./main -m ./ggml_weights/ -p "this is an audio"
 ```
 
-### Optional quantize weights
+### (Optional) Quantize weights
 
 Weights can be quantized using the following strategy: `q4_0`, `q4_1`, `q5_0`, `q5_1`, `q8_0`.
 
+Note that to preserve audio quality, we do not quantize the codec model. The bulk of the
+computation is in the forward pass of the GPT models.
+
 ```bash
 ./quantize ./ggml_weights/ggml_weights_text.bin ./ggml_weights_q4/ggml_weights_text.bin q4_0
 ./quantize ./ggml_weights/ggml_weights_coarse.bin ./ggml_weights_q4/ggml_weights_coarse.bin q4_0
 ./quantize ./ggml_weights/ggml_weights_fine.bin ./ggml_weights_q4/ggml_weights_fine.bin q4_0
-./quantize ./ggml_weights/ggml_weights_codec.bin ./ggml_weights_q4/ggml_weights_codec.bin q4_0
 ```
 
 ### Seminal papers and background on models