diff --git a/.gitignore b/.gitignore
index adb409d..0565243 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ venv.bak/
 *.sigmf-meta
 images/
 recordings/
+dat_recordings/
diff --git a/__init__.py b/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/recording_generation.py b/recording_generation.py
index a01f559..f6fdf82 100644
--- a/recording_generation.py
+++ b/recording_generation.py
@@ -10,7 +10,7 @@ from signal_generation import (create_birdie_recording, create_ctnb_recording,
 
 
 class RecordingGenerator:
-    def __init__(self, sample_rate):
+    def __init__(self, sample_rate: int | float = 10e6):
         self.sample_rate = int(sample_rate)
 
     def generate_collision(
@@ -78,13 +78,14 @@ class RecordingGenerator:
 
     def convert_to_dat(
         self,
-        source_directory: str = "/recordings",
-        save_directory: str = "/dat_recordings",
+        source_directory: str = "recordings",
+        save_directory: str = "dat_recordings",
     ):
+        os.makedirs(save_directory, exist_ok=True)
         for root, _, files in os.walk(source_directory):
             for name in files:
                 filename = os.path.join(root, name)
-                savename = save_directory + name[:-4] + ".dat"
+                savename = save_directory + "/" + name[:-4] + ".dat"
 
                 recording = from_npy(file=filename)
                 data = recording.data[0]