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DC Field | Value | Language |
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dc.contributor.author | Grech, Ivan | - |
dc.contributor.author | Micallef, Joseph | - |
dc.contributor.author | Vladimirova, Tanya | - |
dc.date.accessioned | 2023-04-26T16:24:02Z | - |
dc.date.available | 2023-04-26T16:24:02Z | - |
dc.date.issued | 2003 | - |
dc.identifier.citation | Grech, I., Micallef, J., & Vladimirova, T. (2003). Low-power log-domain CMOS filter bank for 2-D sound source localization. Analog Integrated Circuits and Signal Processing, 36, 99-117. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/109000 | - |
dc.description.abstract | This paper proposes the design of a novel current-mode front-end for the extraction of localization spectral cues from two audio signals, together with test results. The front-end consists of two parallel filter banks, envelope extraction and comparison circuitry, together with an AGC loop. The extracted cues are intended to be further processed in order to determine the source azimuth and elevation. A current-mode log-domain implementation using subthreshold MOS operation is used for micropower operation while still achieving a good bandwidth and linearity. A current-mode solution is also preferred because of the ease of implementation of certain mathematical operations. The front-end splits the input signals into different frequency bands and computes monaural and interaural spectral cues from the resulting signal envelopes for each band. The front-end has been optimized to operate at a supply voltage of 1.8 V and most blocks have been designed using a differential architecture. To our knowledge, this is the first log-domain implementation of a front-end for 2-D localization cues extraction. The design has been carried out using a standard double-poly double-metal 0.8 μm CMOS process with V T = 0.8 V. The bandpass filters which form the main core of the chip exhibit a measured dynamic range of 62 dB corresponding to 1.9% THD, while the total power dissipation is 890 μW. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Kluwer Academic Publishers | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Analog CMOS integrated circuits | en_GB |
dc.subject | Cochlea | en_GB |
dc.subject | Acoustic localization -- Technological innovations | en_GB |
dc.subject | Log domain filters | en_GB |
dc.subject | Low voltage integrated circuits | en_GB |
dc.title | Low-power log-doman CMOS filter bank for 2-D sound localization | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1023/A:1024414101019 | - |
dc.publication.title | Analog Integrated Circuits and Signal Processing | en_GB |
Appears in Collections: | Scholarly Works - FacICTMN |
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Low_power_log_doman_CMOS_filter_bank_for_2_D_sound_localization.pdf Restricted Access | 1.18 MB | Adobe PDF | View/Open Request a copy |
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