diff --git a/Dockerfile b/Dockerfile
index f5c64a8..863425d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,16 @@
 # Based on https://github.com/gradient-ai/base-container
 # Style-Bert-VITS2 are NOT included in this image, only for environment setup
 
+# ==================================================================
+# Details
+# ------------------------------------------------------------------
+# Ubuntu 22.04, Python 3.10
+# CUDA Toolkit 12.1, CUDNN 8.9.7
+# PyTorch 2.1.2 (cuda 12.1)
+# Jupyter Lab
+# Huggingface CLI
+# Other Python packages in requirements.txt
+
 # ==================================================================
 # Initial setup
 # ------------------------------------------------------------------
diff --git a/app.py b/app.py
index d2e9c19..3f0f91e 100644
--- a/app.py
+++ b/app.py
@@ -311,18 +311,18 @@ if __name__ == "__main__":
                     load_button = gr.Button("ロード", scale=1, variant="primary")
                 text_input = gr.TextArea(label="テキスト", value=initial_text)
                 pitch_scale = gr.Slider(
-                    minimum=0,
-                    maximum=2,
+                    minimum=0.8,
+                    maximum=1.5,
                     value=1,
-                    step=0.1,
-                    label="音程",
+                    step=0.05,
+                    label="音程(1以外では音質劣化)",
                 )
                 intonation_scale = gr.Slider(
                     minimum=0,
                     maximum=2,
                     value=1,
                     step=0.1,
-                    label="抑揚",
+                    label="抑揚(1以外では音質劣化)",
                 )
 
                 line_split = gr.Checkbox(