Bugfix in exporting measurement file to wave

lasp/__init__.py

@@ -5,6 +5,7 @@ from .lasp_imptube import *
 from .lasp_measurement import *
 from .lasp_octavefilter import *
 from .lasp_slm import *
+from .lasp_siggen import *
 from .lasp_weighcal import *
 from .wrappers import *
 from .device import AvType

lasp/lasp_avstream.py

@@ -21,7 +21,6 @@ __all__ = ['AvStream']
 video_x, video_y = 640, 480
 
 
-
 class AvStream:
     """Audio and video data stream, to which callbacks can be added for
     processing the data."""

lasp/lasp_measurement.py

@@ -593,7 +593,8 @@ class Measurement:
             return False
 
 
-    def exportAsWave(self, fn=None, force=False, newsampwidth=None, normalize=True):
+    def exportAsWave(self, fn=None, force=False, newsampwidth=None,
+                     normalize=True, channels=None):
         """Export measurement file as wave. In case the measurement data is
         stored as floats, the values are scaled to the proper integer (PCM)
         data format.
@@ -621,7 +622,16 @@ class Measurement:
         if os.path.exists(fn) and not force:
             raise RuntimeError(f'File already exists: {fn}')
 
+
+        if not np.isclose(self.samplerate%1,0):
+            raise RuntimeError(f'Sample rates should be approximately integer for exporting to Wave to work')
+
+        # TODO: With VERY large files, this is not possible!
         data = self.rawData()
+        if np.issubdtype(data.dtype, np.floating):
+            if newsampwidth is None:
+                raise ValueError('Newsampwidth parameter should be given for floating point raw data')
+
 
         if normalize:
             maxabs = np.max(np.abs(data), axis=0)
@@ -642,7 +652,8 @@ class Measurement:
 
             data = (data*scalefac).astype(newtype)
 
-        wavfile.write(fn, self.samplerate, data)
+
+        wavfile.write(fn, int(self.samplerate), data)
 
     @staticmethod
     def fromtxt(fn,