Abstract:
:This paper presents a digital implementation of the Cascade of Asymmetric Resonators with Fast-Acting Compression (CAR-FAC) cochlear model. The CAR part simulates the basilar membrane's (BM) response to sound. The FAC part models the outer hair cell (OHC), the inner hair cell (IHC), and the medial olivocochlear efferent system functions. The FAC feeds back to the CAR by moving the poles and zeros of the CAR resonators automatically. We have implemented a 70-section, 44.1 kHz sampling rate CAR-FAC system on an Altera Cyclone V Field Programmable Gate Array (FPGA) with 18% ALM utilization by using time-multiplexing and pipeline parallelizing techniques and present measurement results here. The fully digital reconfigurable CAR-FAC system is stable, scalable, easy to use, and provides an excellent input stage to more complex machine hearing tasks such as sound localization, sound segregation, speech recognition, and so on.
journal_name
Front Neuroscijournal_title
Frontiers in neuroscienceauthors
Xu Y,Thakur CS,Singh RK,Hamilton TJ,Wang RM,van Schaik Adoi
10.3389/fnins.2018.00198subject
Has Abstractpub_date
2018-04-10 00:00:00pages
198eissn
1662-4548issn
1662-453Xjournal_volume
12pub_type
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