Analog integrated audio frequency synthesizer

Douglas Andersson Hagglund, G. A. Subbarao, Mohammed Abdulaziz, Markus Törmänen
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Abstract

In this paper we present an audio synthesizer that creates audio signals, intended to be reproduced as sound by a loudspeaker. This paper details the design, implementation and verification of an analog, subtractive audio synthesizer. The synthesizer produces a variety of waveforms spanning approximately 3 octaves. The frequency is controlled by an external voltage and the harmonic content is regulated by a tunable filter. The system is fabricated in 130 nm CMOS. Current consumption measures between 1.8 and 2.1 mA from a supply of 1.2 V.
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模拟集成音频合成器
在本文中,我们提出了一种音频合成器,它可以产生音频信号,意图通过扬声器再现声音。本文详细介绍了一种模拟减法音频合成器的设计、实现和验证。合成器产生大约3个八度的各种波形。频率由外部电压控制,谐波含量由可调谐滤波器调节。该系统是在130纳米CMOS中制造的。电流消耗测量在1.8和2.1 mA之间从1.2 V的电源。
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