随笔分类 -  音频

摘要:原理参考: https://www.cnblogs.com/fellow1988/p/9189338.html https://www.cnblogs.com/fellow1988/p/9136346.html 实现代码: 阅读全文
posted @ 2018-10-06 15:23 fellow_jing 阅读(666) 评论(0) 推荐(1)
摘要:原始频谱: LPF: HPF: 代码: 阅读全文
posted @ 2018-09-21 23:25 fellow_jing 阅读(1274) 评论(0) 推荐(0)
摘要:fader在音频处理中是比较基础的处理。通常用于平滑的调节音量,或是音频的渐入和渐出效果。 比较常见的fader有line和cubic线型的fader。 line fader即fader的渐变过程是线性的。cubic的渐变过程是三次曲线。 fader主要有三个参数,attuationDb, type 阅读全文
posted @ 2018-09-04 23:32 fellow_jing 阅读(1610) 评论(0) 推荐(0)
摘要:https://kenrockwell.com/audio/bass-management.htm https://www.axiomaudio.com/blog/bassmanagement https://en.wikipedia.org/wiki/Bass_management https:/ 阅读全文
posted @ 2018-06-16 14:29 fellow_jing 阅读(625) 评论(0) 推荐(0)
摘要:https://blog.csdn.net/qiumingjian/article/details/46326269 https://blog.csdn.net/sszhouplus/article/details/43115769 https://en.wikipedia.org/wiki/Equ 阅读全文
posted @ 2018-06-15 23:35 fellow_jing 阅读(635) 评论(0) 推荐(0)
摘要:https://blog.csdn.net/Filwl_/article/details/50503558 https://blog.csdn.net/lwsas1/article/details/54575668 https://blog.csdn.net/Inger_H/article/deta 阅读全文
posted @ 2018-06-14 23:07 fellow_jing 阅读(729) 评论(0) 推荐(1)
摘要:Filtering and Analysis Functions Filtering FunctionDescription fftfilt Filters a signal with a digitalFilter using an FFT-based overlap-add method fil 阅读全文
posted @ 2018-06-13 23:33 fellow_jing 阅读(10875) 评论(0) 推荐(0)
摘要:http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt https://arachnoid.com/BiQuadDesigner/index.html https://blog.csdn.net/hunterhuang2013/article/deta 阅读全文
posted @ 2018-06-04 22:32 fellow_jing 阅读(2868) 评论(0) 推荐(0)
摘要:测试代码来源于:http://ffmpeg.org/doxygen/trunk/decode_audio_8c-example.html /* * Copyright (c) 2001 Fabrice Bellard * * Permission is hereby granted, free of 阅读全文
posted @ 2018-06-03 23:24 fellow_jing 阅读(1960) 评论(0) 推荐(0)
摘要:ffmpeg的使用方式: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}... Stream specifier Some options are applied per-stream, e.g 阅读全文
posted @ 2018-06-02 23:05 fellow_jing 阅读(663) 评论(0) 推荐(0)
摘要:EAC3 enhanced channel coupling 阅读全文
posted @ 2018-05-09 23:17 fellow_jing 阅读(315) 评论(0) 推荐(0)
摘要:EAC3 spectral extension 原理 阅读全文
posted @ 2018-05-04 23:14 fellow_jing 阅读(482) 评论(0) 推荐(0)
摘要:EAC3 AHT 阅读全文
posted @ 2018-05-02 23:29 fellow_jing 阅读(300) 评论(0) 推荐(0)
摘要:EAC3 channel & program extension 阅读全文
posted @ 2018-05-01 23:20 fellow_jing 阅读(457) 评论(0) 推荐(0)
摘要:EAC3 mantissa quantization 阅读全文
posted @ 2018-04-27 23:10 fellow_jing 阅读(449) 评论(0) 推荐(0)
摘要:EAC3 Spectral Extension Process 阅读全文
posted @ 2018-04-23 23:26 fellow_jing 阅读(213) 评论(0) 推荐(0)
摘要:EAC3 Transient Pre-Noise Processing 阅读全文
posted @ 2018-04-22 23:22 fellow_jing 阅读(279) 评论(0) 推荐(0)
摘要:AC3 encoder flow 阅读全文
posted @ 2018-04-17 23:30 fellow_jing 阅读(427) 评论(0) 推荐(0)
摘要:AC3 IMDCT 阅读全文
posted @ 2018-04-17 23:11 fellow_jing 阅读(386) 评论(0) 推荐(0)
摘要:AC3 rematrix 阅读全文
posted @ 2018-04-15 23:24 fellow_jing 阅读(234) 评论(0) 推荐(0)