推导 - 随笔分类 - prettysky

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(1152) 评论(0) 推荐(0) 编辑

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(132) 评论(0) 推荐(0) 编辑

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) = A t^{n - 1} e x p (- 2 π b_{i} t) c o s (2 π f_{i} + ϕ_{i}) U (t), t \geq 0, 1 \leq i \leq N

$g_{i}(t)=At^{n-1}exp(-2\pi b_{i}t)cos(2\pi f_{i}+\phi_{i})U(t),t\geq0,1\leq i\leq N$ 其中，

A

$A$ 为滤波器增益；

f_{i}

$f_{i}$ 是阅读全文

posted @ 2023-01-06 12:55 prettysky 阅读(472) 评论(0) 推荐(0) 编辑

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(19) 评论(0) 推荐(0) 编辑

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(158) 评论(0) 推荐(0) 编辑

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(63) 评论(0) 推荐(0) 编辑

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(19) 评论(0) 推荐(0) 编辑

prettysky

Concentrate on A!

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