diff --git a/content/docs/sokko-boi/chapter-2/_index.md b/content/docs/sokko-boi/chapter-2/_index.md
index 82e6915..929eb7b 100644
--- a/content/docs/sokko-boi/chapter-2/_index.md
+++ b/content/docs/sokko-boi/chapter-2/_index.md
@@ -135,7 +135,7 @@ XXX，你在干什么呢！
 
 {{< /details >}}
 
-{{< details "iOS / iPad OS" >}}
+{{< details "iOS/iPad OS" >}}
 
 - [Voice Tools](https://apps.apple.com/app/id1447495900)
 - [Vocal Pitch Monitor](https://apps.apple.com/app/id842218231)
@@ -154,8 +154,31 @@ XXX，你在干什么呢！
    {{< figure src="audition-01.jpg" title="图 01" >}}
    如蓝色直线为准，右边对应的是 E4，则我的基础频率为 329 Hz 左右。
 
-1. 对应下表得知自己的基础频率
-   {{< figure src="audition-02.jpg" title="图 02" >}}
+1. 对应下表得知自己的基础{{< wiki 钢琴键频率 频率 >}}
+
+   ```csv
+   记号,频率（Hz）,记号,频率（Hz）
+   G5,783.991,B3,246.942
+   F#5/Gb5,739.989,A#3/Bb3,233.082
+   F5,698.456,**A3**,**220.000**
+   E5,659.255,G#3/Ab3,207.652
+   D#5/Eb5,622.254,G3,195.998
+   D5,587.330,F#3/Gb3,184.997
+   C#5/Db5,554.365,F3,174.614
+   C5,523.251,E3,164.814
+   B4,493.883,D#3/Eb3,155.563
+   A#4/Bb4,466.164,D3,146.832
+   **A4**,**440.000**,C#3/Db3,138.591
+   G#4/Ab4,415.305,C3,130.813
+   G4,391.995,B2,123.471
+   F#4/Gb4,369.994,A#2/Bb2,116.541
+   F4,349.228,**A2**,**110.000**
+   E4,329.628,G#2/Ab2,103.826
+   D#4/Eb4,311.127,G2,97.9989
+   D4,293.665,F#2/Gb2,92.4986
+   C#4/Db4,277.183,F2,87.3071
+   C4,261.626,E2,82.4069
+   ```
 
 **Adobe Audition 测定最低和最高频率的方法**
 
@@ -168,7 +191,7 @@ XXX，你在干什么呢！
 1. 重复 **步骤四** 直至自己无法再降调或升调发声
 1. 点击：视图 → 显示频谱音高
 1. 移动到最后一段持续发声的部分
-   {{< figure src="audition-03.jpg" title="图 03" >}}
+   {{< figure src="audition-02.jpg" title="图 02" >}}
    以最后一段平稳的蓝色直线为准，右边对应的是 D5，则我的最高频率为 587Hz 左右。
 
 1. 对应上表得知自己的最低或最高频率\
diff --git a/content/docs/sokko-boi/chapter-2/audition-02.jpg b/content/docs/sokko-boi/chapter-2/audition-02.jpg
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