From 58c0f89647b1854045111d4637dd6c96ed1964a8 Mon Sep 17 00:00:00 2001 From: github-actions <41898282+github-actions[bot]@users.noreply.github.com> Date: Fri, 11 Aug 2023 20:08:11 +0000 Subject: [PATCH] [U] Update channel content --- exports/hykilp/atom.xml | 2 +- exports/hykilp/index.html | 2 +- exports/hykilp/posts.json | 4 ++-- exports/hykilp/rss.xml | 2 +- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/exports/hykilp/atom.xml b/exports/hykilp/atom.xml index cfcdcd32c..1336e4e2e 100644 --- a/exports/hykilp/atom.xml +++ b/exports/hykilp/atom.xml @@ -2,7 +2,7 @@ https://aza.moe/life 小桂桂的回忆录 📒 - 2023-08-11T18:08:18.479295+00:00 + 2023-08-11T20:08:08.676513+00:00 python-feedgen https://aza.moe/meru_256px.png diff --git a/exports/hykilp/index.html b/exports/hykilp/index.html index 3a99d17b9..28278327d 100644 --- a/exports/hykilp/index.html +++ b/exports/hykilp/index.html @@ -27,7 +27,7 @@ diff --git a/exports/hykilp/posts.json b/exports/hykilp/posts.json index d6361841a..2b22426bd 100644 --- a/exports/hykilp/posts.json +++ b/exports/hykilp/posts.json @@ -33085,7 +33085,7 @@ "id": 2471, "date": "2023-08-01T16:53:46", "text": "呜呜,发现工作的研究被 ffmpeg 坑了,所有双声道音频数据都要重新跑。🫣\n\n事情是这样的:我无聊想听听数据集里面的曲子,发现有些明明是人类作曲音质却异常地差,为什么呢?在调了各种 ffmpeg 参数之后发现,只要加了 -ac 1 把双声道合并成单声道音质就会非常差,可是单声道听起来应该和双声道没区别才对呀?\n\n到处查查发现,-ac 1 降声道其实就是把两个波形平均到一起,这样做本身就很有问题... 假设你有一个音频,左耳是 500Hz 的正弦波,右耳也一样但是平移了半个周期,这样的话双声道人耳听到的还是一个正弦波的声音,但是用 -ac 1 降声道就完全没有声音了。为什么呢?因为上下两个正弦波的平均值是 0,互相抵消了。\n\n现实中用两个麦克风给乐器录音的话,两个声道平均互相干扰也是很常见的情况,所以比起平均值还是直接取单声道会好很多很多... 似乎导师也刚意识到这个坑,总之是浪费了一两个月的算力学到了一个很重要的教训 🫣", - "views": 71, + "views": 72, "forwards": 2, "images": [ { @@ -33345,7 +33345,7 @@ { "id": 2490, "date": "2023-08-08T17:11:45", - "views": 62, + "views": 63, "forwards": 0, "images": [ { diff --git a/exports/hykilp/rss.xml b/exports/hykilp/rss.xml index fb130ddae..77361b81d 100644 --- a/exports/hykilp/rss.xml +++ b/exports/hykilp/rss.xml @@ -12,7 +12,7 @@ https://aza.moe/life zh-cn - Fri, 11 Aug 2023 18:08:18 +0000 + Fri, 11 Aug 2023 20:08:08 +0000 小桂桂的回忆录 📒 #2499 https://aza.moe/life?post=2499