diff --git a/examples/deepvoice3/README.md b/examples/deepvoice3/README.md
index 3cf445e..f5db3e9 100644
--- a/examples/deepvoice3/README.md
+++ b/examples/deepvoice3/README.md
@@ -23,7 +23,7 @@ The model consists of an encoder, a decoder and a converter (and a speaker embed
 
 ```text
 ├── data.py          data_processing
-├── configs/    (example) configuration files
+├── configs/         (example) configuration files
 ├── sentences.txt    sample sentences
 ├── synthesis.py     script to synthesize waveform from text
 ├── train.py         script to train a model
diff --git a/examples/wavenet/configs/wavenet_mixture_of_gaussians.yaml b/examples/wavenet/configs/wavenet_mixture_of_gaussians.yaml
index 8aeb8db..68936ee 100644
--- a/examples/wavenet/configs/wavenet_mixture_of_gaussians.yaml
+++ b/examples/wavenet/configs/wavenet_mixture_of_gaussians.yaml
@@ -1,5 +1,5 @@
 data:
-  batch_size: 4
+  batch_size: 16
   train_clip_seconds: 0.5
   sample_rate: 22050
   hop_length: 256
diff --git a/examples/wavenet/configs/wavenet_single_gaussian.yaml b/examples/wavenet/configs/wavenet_single_gaussian.yaml
index cd8fd22..484db0b 100644
--- a/examples/wavenet/configs/wavenet_single_gaussian.yaml
+++ b/examples/wavenet/configs/wavenet_single_gaussian.yaml
@@ -1,5 +1,5 @@
 data:
-  batch_size: 32
+  batch_size: 16
   train_clip_seconds: 0.5
   sample_rate: 22050
   hop_length: 256
diff --git a/examples/wavenet/configs/wavenet_softmax.yaml b/examples/wavenet/configs/wavenet_softmax.yaml
index 2199c9b..7e9d756 100644
--- a/examples/wavenet/configs/wavenet_softmax.yaml
+++ b/examples/wavenet/configs/wavenet_softmax.yaml
@@ -1,5 +1,5 @@
 data:
-  batch_size: 4
+  batch_size: 16
   train_clip_seconds: 0.5
   sample_rate: 22050
   hop_length: 256