Deprecated since version 188.8.131.52: Use the brian2hears package instead.
This module is designed for users of the Brian 1 library “Brian Hears”. It allows you to use Brian Hears with Brian 2 with only a few modifications (although it’s not compatible with the “standalone” mode of Brian 2). The way it works is by acting as a “bridge” to the version in Brian 1. To make this work, you must have a copy of Brian 1 installed (preferably the latest version), and import Brian Hears using:
from brian2.hears import *
Many scripts will run without any changes, but there are a few caveats to be aware of. Mostly, the problems are due to the fact that the units system in Brian 2 is not 100% compatible with the units system of Brian 1.
FilterbankGroup now follows the rules for
NeuronGroup in Brian 2, which means some changes may be
necessary to match the syntax of Brian 2, for example, the following would work in Brian 1 Hears:
# Leaky integrate-and-fire model with noise and refractoriness eqs = ''' dv/dt = (I-v)/(1*ms)+0.2*xi*(2/(1*ms))**.5 : 1 I : 1 ''' anf = FilterbankGroup(ihc, 'I', eqs, reset=0, threshold=1, refractory=5*ms)
However, in Brian 2 Hears you would need to do:
# Leaky integrate-and-fire model with noise and refractoriness eqs = ''' dv/dt = (I-v)/(1*ms)+0.2*xi*(2/(1*ms))**.5 : 1 (unless refractory) I : 1 ''' anf = FilterbankGroup(ihc, 'I', eqs, reset='v=0', threshold='v>1', refractory=5*ms)
Slicing sounds no longer works. Previously you could do, e.g.
sound[:20*ms] but with Brian 2 you would need
In addition, some functions may not work correctly with Brian 2 units. In most circumstances, Brian 2 units can be
used interchangeably with Brian 1 units in the bridge, but in some cases it may be necessary to convert units from
one format to another, and to do that you can use the functions