Artículo
Interfacing PDM sensors with PFM spiking systems: application for Neuromorphic Auditory Sensors
Autor/es | Jiménez Fernández, Ángel Francisco
Domínguez Morales, Juan Pedro Gutiérrez Galán, Daniel Ríos Navarro, José Antonio Tapiador Morales, Ricardo Linares Barranco, Alejandro |
Departamento | Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores |
Fecha de publicación | 2019 |
Fecha de depósito | 2020-01-23 |
Publicado en |
|
Resumen | In this paper we present a sub-system to convert
audio information from low-power MEMS microphones with
pulse density modulation (PDM) output into rate coded spike
streams. These spikes represent the input signal of a ... In this paper we present a sub-system to convert audio information from low-power MEMS microphones with pulse density modulation (PDM) output into rate coded spike streams. These spikes represent the input signal of a Neuromorphic Auditory Sensor (NAS), which is implemented with Spike Signal Processing (SSP) building blocks. For this conversion, we have designed a HDL component for FPGA able to interface with PDM microphones and converts their pulses to temporal distributed spikes following a pulse frequency modulation (PFM) scheme with an accurate configurable Inter-Spike-Interval. The new FPGA component has been tested in two scenarios, first as a stand-alone circuit for its characterization, and then it has been integrated with a full NAS design to verify its behavior. This PDM interface demands less than 1% of a Spartan 6 FPGA resources and has a power consumption below 5mW. |
Identificador del proyecto | TEC2016-77785-P |
Cita | Jiménez Fernández, Á.F., Domínguez Morales, J.P., Gutiérrez Galán, D., Rios Navarro, A., Tapiador Morales, R. y Linares Barranco, A. (2019). Interfacing PDM sensors with PFM spiking systems: application for Neuromorphic Auditory Sensors. ArXiv.org, arXiv:1905.00390 |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
Interfacing PDM sensors.pdf | 640.5Kb | [PDF] | Ver/ | |