add extract acoustic feature script

1 files changed, 24 insertions, 0 deletions

diff --git a/become_yukarin/model.py b/become_yukarin/model.py
new file mode 100644
index 0000000..087afcd
--- /dev/null
+++ b/become_yukarin/model.py
@@ -0,0 +1,24 @@
+import chainer
+
+
+class DeepConvolution(chainer.link.Chain):
+    def __init__(self, num_scale: int, base_num_z: int, **kwargs):
+        super().__init__(**kwargs)
+        self.num_scale = num_scale
+
+        for i in range(num_scale):
+            l = base_num_z * 2 ** i
+            self.add_link('conv{}'.format(i + 1),
+                          chainer.links.Convolution2D(None, l, 4, 2, 1, nobias=True))
+            self.add_link('bn{}'.format(i + 1), chainer.links.BatchNormalization(l))
+
+    def get_scaled_width(self, base_width):
+        return base_width // (2 ** self.num_scale)
+
+    def __call__(self, x):
+        h = x
+        for i in range(self.num_scale):
+            conv = getattr(self, 'conv{}'.format(i + 1))
+            bn = getattr(self, 'bn{}'.format(i + 1))
+            chainer.functions.relu(bn(conv(h)))
+        return h