Fix invalid chunk size in PreciseRunner and fix importing from db

precise/train_data.py

@@ -14,7 +14,7 @@
 import json
 from argparse import ArgumentParser
 from hashlib import md5
-from os.path import join, isfile
+from os.path import join, isfile, dirname
 from typing import *
 
 import numpy as np
@@ -64,7 +64,7 @@ class TrainData:
             raise RuntimeError('Database file does not exist: ' + db_file)
 
         train_groups = {}
-        train_group_file = db_file.replace('db', '') + 'groups.json'
+        train_group_file = join(dirname(db_folder), db_file.replace('.txt', '') + '.groups.json')
         if isfile(train_group_file):
             with open(train_group_file) as f:
                 train_groups = json.load(f)

runner/README.md

@@ -0,0 +1,3 @@
+# Precise Wrapper
+
+A simple to use 

runner/example.py

@@ -20,6 +20,7 @@ from threading import Event
 
 def main():
     parser = ArgumentParser('Implementation demo of precise-engine')
+    parser.add_argument('engine', help='Location of binary engine file')
     parser.add_argument('model')
     args = parser.parse_args()
 
@@ -29,7 +30,7 @@ def main():
     def on_activation():
         Popen(['aplay', '-q', 'data/activate.wav'])
 
-    engine = PreciseEngine('./precise/engine.py', args.model)
+    engine = PreciseEngine(args.engine, args.model)
     PreciseRunner(engine, on_prediction=on_prediction, on_activation=on_activation,
                   trigger_level=0).start()
     Event().wait()  # Wait forever

runner/precise_runner/runner.py

@@ -163,7 +163,7 @@ class PreciseRunner:
         """Continuously check Precise process output"""
         activation = 0
         while self.running:
-            chunk = self.stream.read(self.chunk_size)
+            chunk = self.stream.read(self.chunk_size // 2)
             prob = self.engine.get_prediction(chunk)
             self.on_prediction(prob)