友鼓轻松学 vs Filter workbench

友鼓轻松学是一款拥有专业电子鼓学习教程的app。通过友鼓轻松学，您可以体会到最愉悦的电子鼓学习体验。 友鼓轻松学拥有多首电子鼓练习曲，现代流行，金属等多样风格。让您轻松入门电子鼓，跟着我们开启一段全新的学鼓之旅！ 友鼓鼓，是一款让您在5分钟就能上手打鼓的智能乐器，用于电子鼓启蒙教育，适合培养孩子的音乐兴趣和素养。通过蓝牙和手机app连接，让孩子在游戏中不知不觉学会打鼓！ 不懂乐理，没关系！只要你会玩游戏就可以打歌哦！ 不懂电子鼓，没关系！app里有专业老师演示视频！ 还在等什么？快来和我们一起轻松学打鼓吧！

Design RC, RL, and RLC filters (2nd–7th order) with Butterworth & Chebyshev alignments, passive crossovers, RLC band-pass/reject, and Twin-T notch—enter specs to instantly get component values and quick Bode insights in a clean, offline-friendly, dark-mode UI for lab, classroom, and audio/embedded work. What you can design: -RC & RL filters: low-pass / high-pass, 2nd–7th order -RLC filters: band-pass & band-reject (notch) -Butterworth: maximally flat magnitude -Chebyshev: ripple-tuned sharpness -Twin-T notch: precise mains or tone suppression -Passive crossovers: 2-way/3-way starter calculations Built for engineers, hobbyist and students, it turns specs into trustworthy parts fast—so you can prototype smarter, learn by tweaking, and move from idea to BOM with confidence.