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- W1977595553 abstract "Both power and size are very important design issues for hearing aids. This paper proposes a fully integrated low-power SoC for today׳s digital hearing aids. The SoC integrates all the audio processing elements on single chip, including the analog front-end, digital signal processing (DSP) platform and class-D amplifier. Also, the low-dropout voltage regulators and internal clock generator are both integrated to minimize the system overall size. The 24-bit DSP platform comprises an application-specific instruction-set processor and several dedicated accelerators to achieve a trade-off between flexibility and power efficiency. Three critical hearing-aid algorithms (wide dynamic range compression, noise reduction and feedback cancellation) are performed by the low-power accelerators. The proposed SoC has been fabricated in SMIC 130 nm CMOS technology. The measurement results show that the analog front-end has up to 88 dB signal-to-noise ratio. And the DSP platform consumes about 0.86 mA current at 8 MHz clock frequency when executing the three algorithms. The total current consumption of SoC is only 1.2 mA at 1 V supply. In addition, the acoustic test results indicate that the SoC is one promising candidate for hearing-aid manufacturers." @default.
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- W1977595553 date "2015-01-01" @default.
- W1977595553 modified "2023-10-16" @default.
- W1977595553 title "A 1-V, 1.2-mA fully integrated SoC for digital hearing aids" @default.
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- W1977595553 doi "https://doi.org/10.1016/j.mejo.2014.09.013" @default.
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