0. 基本概念
AWG:Additive White(zero-mean) Gaussian,可加白噪声;
- AWGN:Additive White(zero-mean) Gaussian Noise
- 将某一均值为 0 方差为大小的噪声序列,加到原始信号和传递函数卷积后的结果上,
N, L AWG = sigma*randn(N+L-1, 1); y_hat = conv(y, h) + AWG
1. 滤波器设计
2. Gabor 滤波器
- Gabor filter ⇒ Gabor features ⇒ oriented structure …