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- W4376134003 abstract "In wearable and mobile devices, speech interfaces are increasingly equipped with keyword-spotting (KWS) functions. The always-on characteristic requires KWS to achieve ultra-low power while keeping good accuracy, which is a major concern for KWS ASICs. For the frontend, most commercial MEMS microphones consume power up to $gt 100 mu mathrm{W}$, which breaks the low-power effort by the state-of-the-art (SoTA) works [1, 2] that lack a fully-integrated near-microphone single-chip solution. For the feature extractor (FEx), analog FExs have achieved the low power of $9.3 mu mathrm{W}$ [3] and 109nW [4], but weaken the detection accuracy due to low-quality features. Scaling-friendly digital FExs [1, 5] have the advantage of extracting high-quality features, but the computation complexity and memory optimization are still key issues. For the classifier, convolutional neural networks (CNNs) are commonly applied to KWS, achieving superior accuracy results. However, their complex networks cause redundant computation and hardware cost at the edge." @default.
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- W4376134003 date "2023-04-01" @default.
- W4376134003 modified "2023-10-16" @default.
- W4376134003 title "A 608nW Near-Microphone Keyword-Spotting Chip Using Real-Point Serial FFT-Based MFCC and Temporal Depthwise Separable CNN in 28nm CMOS" @default.
- W4376134003 doi "https://doi.org/10.1109/cicc57935.2023.10121228" @default.
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