Rename signal -> signals

signals/domain.py

@@ -0,0 +1,41 @@
+# domain.py
+# Eryn Wells <eryn@erynwells.me>
+'''
+Some utilities for dealing with signal domains: time, frequency, etc.
+'''
+
+import numpy as np
+
+__default_time = 2.0
+__default_steps = 200
+
+class Time:
+    __DefaultTime = 2.0
+    __DefaultSteps = 200
+
+    def __init__(self, sec=__DefaultTime, samples=__DefaultSteps):
+        self.sec = sec
+        self.samples = samples
+        self._domain = None
+
+    @property
+    def domain(self):
+        if self._domain == None:
+            self._domain = np.linspace(0, self.sec, num=self.samples + 1)
+        return self._domain
+
+    @property
+    def rate(self):
+        '''Number of samples per second.'''
+        return self.samples / self.sec
+
+    @property
+    def interval(self):
+        '''Amount of time between samples, in seconds.'''
+        return self.sec / self.samples
+
+    def __str__(self):
+        return repr(self)
+
+    def __repr__(self):
+        return '{}(sec={}, samples={})'.format(self.__class__.__name__, self.sec, self.samples)