TY - GEN
T1 - Evaluation of Stochastic Cascaded IIR Filters
AU - Onizawa, Naoya
AU - Koshita, Shunsuke
AU - Sakamoto, Shuichi
AU - Kawamata, Masayuki
AU - Hanyu, Takahiro
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/6/30
Y1 - 2017/6/30
N2 - Stochastic cascaded IIR filters are used for area-efficient complicated filters in hardware, such as gammatone and gammachirp filters, but the effectiveness of the cascaded form has not been studied in stochastic computation. To evaluate the performance of the stochastic cascaded IIR filters, stochastic direct-form IIR filters are also designed as a baseline filter. The performance of both stochastic filters are simulated in MATLAB and compared with floating-point results in different orders and different stochastic bit lengths. The simulation results show that the cascaded form reduces errors in comparison with the direct form in stochastic IIR filters as well as the well-known effectiveness of the cascaded form in digital IIR filters. In addition, some interesting features of the stochastic IIR filters such as oscillations are exhibited, which are discussed based on spectral analysis.
AB - Stochastic cascaded IIR filters are used for area-efficient complicated filters in hardware, such as gammatone and gammachirp filters, but the effectiveness of the cascaded form has not been studied in stochastic computation. To evaluate the performance of the stochastic cascaded IIR filters, stochastic direct-form IIR filters are also designed as a baseline filter. The performance of both stochastic filters are simulated in MATLAB and compared with floating-point results in different orders and different stochastic bit lengths. The simulation results show that the cascaded form reduces errors in comparison with the direct form in stochastic IIR filters as well as the well-known effectiveness of the cascaded form in digital IIR filters. In addition, some interesting features of the stochastic IIR filters such as oscillations are exhibited, which are discussed based on spectral analysis.
KW - cascaded filter
KW - digital circuit implementation
KW - IIR filter
KW - stochastic computation
UR - http://www.scopus.com/inward/record.url?scp=85026767549&partnerID=8YFLogxK
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U2 - 10.1109/ISMVL.2017.25
DO - 10.1109/ISMVL.2017.25
M3 - Conference contribution
AN - SCOPUS:85026767549
T3 - Proceedings of The International Symposium on Multiple-Valued Logic
SP - 224
EP - 229
BT - Proceedings - 2017 IEEE 47th International Symposium on Multiple-Valued Logic, ISMVL 2017
PB - IEEE Computer Society
T2 - 47th IEEE International Symposium on Multiple-Valued Logic, ISMVL 2017
Y2 - 22 May 2017 through 24 May 2017
ER -