TY - GEN
T1 - Low-power system-on-chip acoustic localizer
AU - Li, Shuo
AU - Yun, Xiao
AU - Stanacevic, Milutin
PY - 2010
Y1 - 2010
N2 - We present the design of system-on-chip acoustic localizer chip that can be directly integrated with miniature MEMS microphone array. Continuous-time bandpass filtering and amplification at interface with microphone array enable low-power and small-form factor implementation. Time delays between acoustic signals observed over a planar geometry of four microphones are obtained by relating spatial and temporal differentials and estimated through mixed-signal least-square digital adaptation. Designed 3 mm × 3 mm chip in 0.5 μm CMOS technology operates with estimated 150 μW power dissipation at 16 kHz sampling rate.
AB - We present the design of system-on-chip acoustic localizer chip that can be directly integrated with miniature MEMS microphone array. Continuous-time bandpass filtering and amplification at interface with microphone array enable low-power and small-form factor implementation. Time delays between acoustic signals observed over a planar geometry of four microphones are obtained by relating spatial and temporal differentials and estimated through mixed-signal least-square digital adaptation. Designed 3 mm × 3 mm chip in 0.5 μm CMOS technology operates with estimated 150 μW power dissipation at 16 kHz sampling rate.
UR - https://www.scopus.com/pages/publications/77956579616
U2 - 10.1109/MWSCAS.2010.5548822
DO - 10.1109/MWSCAS.2010.5548822
M3 - Conference contribution
SN - 9781424477715
T3 - Midwest Symposium on Circuits and Systems
SP - 1041
EP - 1044
BT - 2010 IEEE International 53rd Midwest Symposium on Circuits and Systems, MWSCAS 2010
T2 - 53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010
Y2 - 1 August 2010 through 4 August 2010
ER -