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. Author manuscript; available in PMC: 2013 Jun 6.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2011;2011:1145–1148. doi: 10.1109/IEMBS.2011.6090268

Fig. 1.

Fig. 1

Signal processing stages for a cochlear implant simulation. The input audio signal is converted to single precision floating point, followed by pre-emphasis and AGC/DRC (Automatic Gain Control / Dynamic Range Compression). The remaining stages include a frequency-specific filtering and envelope extraction followed by a noiseband simulation based on modulating white noise with the low-pass output of each channel. The output of each band is summed to produce the final acoustic output. Adapted from [3], [4]