def _get_envelope(self):
if not self._envelope_valid:
log.debug('recomputing _envelope')
rise_time = self.get_current_value('rise_fall_time')
ramp_n = int(rise_time*self.iface_behavior.fs)
t = self._get_time()
self._envelope = wave.generate_envelope(len(t), ramp_n)
self._envelope_valid = True
return self._envelope
def _get_cos_envelope(self):
if not self._cos_envelope_valid:
log.debug('recomputing cos envelope')
t = self._get_time()
rise_time = self.get_current_value('rise_fall_time')
rise_n = int(rise_time*self.iface_behavior.fs)
duration_n = len(t)
envelope = wave.generate_envelope(duration_n, rise_n)
self._cos_envelope = envelope
self._cos_envelope_valid = True
return self._cos_envelope
