diff --git a/reaper/batch_reaper.py b/reaper/batch_reaper.py
index 3573c1c..28c3296 100644
--- a/reaper/batch_reaper.py
+++ b/reaper/batch_reaper.py
@@ -7,7 +7,8 @@
 
 output_directory = r''
 
-def analyze_directory(data_directory, reaper_path = None, output_directory = None):
+def analyze_directory(data_directory, reaper_path = None, output_directory = None,
+                    min_pitch = 80, max_pitch = 600, time_step = 0.005):
     if reaper_path is None:
         reaper_path = 'reaper'
     elif not os.path.exists(reaper_path):
@@ -37,7 +38,10 @@ def analyze_directory(data_directory, reaper_path = None, output_directory = Non
                     os.makedirs(new_root)
                 output_path = os.path.join(new_root, base_name + '.f0')
                 pm_path = os.path.join(new_root, base_name + '.pm')
-            subprocess.call([reaper_path, '-i', wav_path, '-f', output_path, '-p', pm_path, '-a'])
+            subprocess.call([reaper_path, '-i', wav_path, '-f',
+                        output_path, '-p', pm_path, '-a',
+                        '-e', str(time_step), '-u', str(time_step),
+                        '-x', str(max_pitch), '-m', str(min_pitch)])
             processed += 1
 
 if __name__ == '__main__':
diff --git a/reaper/command_line/batch_reaper.py b/reaper/command_line/batch_reaper.py
index 1691da7..293fbad 100644
--- a/reaper/command_line/batch_reaper.py
+++ b/reaper/command_line/batch_reaper.py
@@ -12,6 +12,9 @@ def main():
     parser.add_argument('data_directory', help='Full path to wav files')
     parser.add_argument('-r', '--reaper_path', default = '', type=str, help='Path to reaper binary if not on path')
     parser.add_argument('-o', '--output_directory', default='', type=str, help='Directory to save output if not with the wav files')
+    parser.add_argument('-t', '--time_step', default=0.001, type=float, help='Interval between pitch marks')
+    parser.add_argument('-x', '--max_pitch', default=600, type=int, help='Maximum pitch (in Hz) to look for')
+    parser.add_argument('-m', '--min_pitch', default=80, type=int, help='Minimum pitch (in Hz) to look for')
 
     args = parser.parse_args()
 
@@ -23,7 +26,17 @@ def main():
     output = args.output_directory
     if output == '':
         output = None
-    analyze_directory(data, reaper, output)
+    kwargs = {}
+    step = args.time_step
+    if step:
+        kwargs['time_step'] = step
+    mp = args.max_pitch
+    if mp:
+        kwargs['max_pitch'] = mp
+    mp = args.min_pitch
+    if mp:
+        kwargs['min_pitch'] = mp
+    analyze_directory(data, reaper, output, **kwargs)
 
 
 if __name__ == '__main__':