随笔分类 -  推导

时频分析
摘要：书名: 《现代汽车振动与噪声分析技术》 作者: 靳畅编著 当前第:64页 阅读全文
posted @ 2023-01-22 21:38 prettysky 阅读(1446) 评论(0) 推荐(0)
Gabor Filterbank (GFB) Features
摘要：GFB is a recent feature designed for robust ASR by taking into account the spectrotemporal modulation frequencies. To derive GFB, we compute the log m 阅读全文
posted @ 2023-01-07 10:09 prettysky 阅读(158) 评论(0) 推荐(0)
Gammatone滤波器组
摘要：Gammatone滤波器组是一个标准的耳蜗听觉滤波器，其滤波器的时域脉冲响应为： $$g_{i}(t)=At^{n-1}exp(-2\pi b_{i}t)cos(2\pi f_{i}+\phi_{i})U(t),t\geq0,1\leq i\leq N$$ 其中，$A$为滤波器增益；$f_{i}$是 阅读全文
posted @ 2023-01-06 12:55 prettysky 阅读(597) 评论(0) 推荐(0)
The Conventional CNN-based Method
摘要：To be specific, given an audio clip, the two-dimensional time-frequency representation (e.g. Log-Mel) is first extracted. Convolutional layers are the 阅读全文
posted @ 2023-01-04 14:00 prettysky 阅读(27) 评论(0) 推荐(0)
Tutorial on Gabor Filters
摘要：https://inc.ucsd.edu/mplab/75/media//gabor.pdf 阅读全文
posted @ 2022-12-29 21:49 prettysky 阅读(221) 评论(0) 推荐(0)
Wavelets
摘要：The information of interest is often a combination of phenomena that are transient (e.g., spike and action potentials) and diffuse (e.g., small oscill 阅读全文
posted @ 2022-12-29 13:45 prettysky 阅读(69) 评论(0) 推荐(0)
Non-Negative Matrix Factorization (NMF)
摘要：NMF is an unsupervised machine learning technique created by Lee & Seung in 1999. 阅读全文
posted @ 2022-12-14 11:26 prettysky 阅读(39) 评论(0) 推荐(0)