音頻剪切

Audacity novices often start with lofty project ideas, but sometimes they lack the basics. Knowing how to cut and trim tracks is basic audio editing and is a fundamental starting point for making more elaborate arrangements.

大膽的新手通常從崇高的項目創意開始，但有時他們缺乏基礎知識。 知道如何剪切和修剪音軌是基本的音頻編輯，并且是進行更精心安排的基本出發點。

For this exercise, I’ll be making a ringtone from a Castlevania: Symphony of the Night track. I have the original CD and used that so I started with better quality audio than an MP3. You can follow along with any file you like, just so you get a feel for cutting, trimming, and arranging sound clips for yourself.

對于本練習，我將從《惡魔城：夜晚的交響曲》中制作鈴聲。 我擁有原始CD并使用過該CD，因此我開始使用的音頻質量要優于MP3。 您可以隨心所欲地跟隨任何文件，這樣就可以自己剪切，修剪和安排聲音片段。

I know which parts I want to edit in the track, but a quick play-through will help me look for those areas visually.

我知道我想在曲目中編輯哪些部分，但是快速瀏覽可以幫助我直觀地查找這些區域。

The scrubber in the above screenshot is pointing to a lull in the music, where the audio drops low or fades out. These areas are ideal spots to work with.

上方屏幕截圖中的清理器指向音樂中的停頓狀態，音頻下降或消失。 這些區域是理想的合作場所。

First, let’s make sure the Selection tool is active.

首先，確保選擇工具處于活動狀態。

Next, let’s make a selection in an area of the track where we want to make an edit. Click and drag your mouse, and you’ll see that the background changes to a darker shade of gray.

接下來，讓我們在要編輯的音軌區域中進行選擇。 單擊并拖動鼠標，您將看到背景變為更深的灰色陰影。

I know that the song changes somewhere in here. You can hit CTRL+1 to Zoom In, or click on the icon that’s a magnifying glass with a plus. This will help us identify more precisely where to end our selection.

我知道這首歌在這里某處改變了。 您可以按CTRL + 1進行放大，或單擊帶有加號的放大鏡圖標。 這將幫助我們更準確地確定在哪里結束我們的選擇。

That’s much better, isn’t it? You can see that on the right side of the selection area, there’s a spike in amplitude. That’s where I want my selection to end, but it’s not properly aligned. If you move your mouse close to that area, you’ll see the cursor change to a hand that’s pointing.

那好多了，不是嗎？ 您會看到在選擇區域的右側，振幅出現尖峰。 那是我希望選擇結束的地方，但是排列不正確。 如果將鼠標移到該區域附近，您會看到光標變為指向的手。

Clicking and dragging while this cursor is shown will allow you to change that particular selection boundary. You can see mine is much better now.

在顯示此光標時單擊并拖動將允許您更改特定的選擇邊界。 您可以看到我的現在好多了。

Repeat the same process with the left boundary. You can see my selection encompasses a quiet beginning point and a quiet ending point, which makes it sound clean and natural.

左邊界重復相同的過程。 您可以看到我的選擇包含一個安靜的起點和一個安靜的終點，這使其聽起來干凈自然。

What I want to do is cut this section and move it to another area. I can just click the Cut button or hit CTRL+X.

我想做的是剪掉這一部分，然后將其移到另一個區域。 我只需單擊“剪切”按鈕或按CTRL + X。

You can see that the rest of the track after my selection got pushed up to where the selection started.

您可以看到我選擇后的曲目的其余部分被推到了選擇開始的位置。

While it’s possible to paste that clip in the same track at a different point, it’s much easier to make arrangements using multiple tracks. Go to Tracks > Add New > Stereo Track.

盡管可以將該剪輯粘貼到同一軌道的不同點，但使用多個軌道進行安排要容易得多。 轉到軌道>添加新>立體聲軌道。

Using different tracks can help keep things straight, so you can think of it like using Layers in an image editor. Sometimes, it’s more work to use multiple tracks, and sometimes it’s a necessity, but it’s process you should familiarize yourself with if you plan to do audio editing.

使用不同的軌道可以使事情保持直線，因此您可以將其視為在圖像編輯器中使用“圖層”。 有時，使用多個音軌需要做更多的工作，有時這是必要的，但是如果您打算進行音頻編輯，則應該熟悉此過程。

Two tracks ending up being too tall for good screenshots, so I clicked on the bottom of each track area and dragged up to resize them vertically. This has no effect on the audio, it just makes it easier to see things.

兩條軌道最終都太高而無法獲得良好的屏幕截圖，因此我單擊了每個軌道區域的底部，然后向上拖動以垂直調整它們的大小。 這對音頻沒有影響，只是使看東西更容易。

And now, click where you want to paste the clip in the second track and click on the Paste button or hit CTRL+V.

現在，單擊要在第二軌道中粘貼剪輯的位置，然后單擊“粘貼”按鈕或按CTRL + V。

Note that the bottom track has an active selection. The dark background is not in the top track at all, despite being visible in the timeline. Now, I want to change its linear placement, or in other words, move it in time. To do that, we use the Time Shift Tool.

請注意，底部軌道具有活動的選擇。 盡管在時間軸中可見，但深色背景根本不在頂部軌道中。 現在，我想更改其線性位置，換句話說，及時移動它。 為此，我們使用時移工具。

Now you can click and drag anywhere in your selection and the whole thing will slide side-to-side. You can also have it snap to other locations, like the beginning or end.

現在，您可以單擊并拖動選擇中的任意位置，整個過程將左右滑動。 您還可以將其捕捉到其他位置，例如開始或結束。

Alright, I have it where I want it in relation to another section of the track. When you hit play, however, Audacity will play both tracks over each other. This works well for mixing different tracks, but not here. Let’s insert some silence in the first track. Click on the selection tool and highlight the portion of the first track that’s directly above the second. You’ll see that you can snap to that area.

好吧，相對于曲目的其他部分，我可以在需要的地方使用它。 但是，當您點擊播放時，Audacity會同時播放兩條音軌。 這對于混合不同的音軌效果很好，但此處不適用。 讓我們在第一首曲目中插入一些沉默。 單擊選擇工具，然后突出顯示第一首曲目中第二首曲目正上方的部分。 您會看到可以捕捉到該區域。

Next, click on the Insert Silence tool, located next to the Undo button.

接下來，單擊“撤消”按鈕旁邊的“插入沉默”工具。

This converts our selection to silence. Instead of cutting and having the latter part of the track jump forward, this will keep it as-is because the silence acts as a placeholder.? Next, I decided to cut some of the audio after the pasted clip.

這會將我們的選擇轉換為靜音。 無需剪切并使曲目的后半部分向前跳躍，而是將其保持原樣，因為靜音充當占位符。 接下來，我決定在粘貼的剪輯之后剪切一些音頻。

Finally, the portions of the track I wanted to align are properly done.

最后，我要對齊的軌道部分已正確完成。

But wait, I only want the middle sections of this track! Instead of cutting out areas of the track before and after, we can use the trim tool to make this easier. Use the selection tool to highlight what you want to keep.

但是，等等，我只想要這條軌道的中間部分！ 我們可以使用修剪工具來簡化此過程，而不必前后剪切軌道的區域。 使用選擇工具突出顯示您要保留的內容。

Adjust your start and end points, but be sure to drag your mouse down into the second track while making your selection. Notice how the dark gray background appears on both tracks in the above screenshot. When you’re ready, click on the Trim Tool, which is right next to the Paste button.

調整起點和終點，但是在進行選擇時，請確保將鼠標向下拖動到第二條軌道。 請注意，在上述屏幕截圖中，深灰色背景如何出現在兩條軌道上。 準備好后，單擊“粘貼”按鈕旁邊的“修剪工具”。

You can see that the Trim Tool acts just like a Crop Tool does in image editors. The Trim Tool leaves the audio where it is, but that’s not particularly useful in our case. Use the Time Shift Tool to move this so it aligns with 0 on the timeline. All done!

您可以看到，修剪工具的作用就像圖像編輯器中的“修剪工具”一樣。 修剪工具會將音頻保留在原處，但這在我們的案例中并不是特別有用。 使用“時移工具”移動它，使其在時間軸上與0對齊。 全做完了！

Since this is a ringtone for me, I went to File > Export and saved it as an MP3.

由于這是我的手機鈴聲，因此我轉到“文件”>“導出”并將其保存為MP3。

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If you chose not to follow along, here are a few important points to take away from this procedure:

如果您選擇不遵循，則此過程有一些重要要點：

• Your audio selections can be changed by dragging from as close to the original boundary as possible.
  可以通過從盡可能靠近原始邊界的方向拖動來更改音頻選擇。
• The Cut Tool removes sections from the timeline, leaving no gap.
  剪切工具從時間線中刪除部分，不留任何間隙。
• The Insert Silence Tool removes audio but leaves a gap.
  插入靜音工具可刪除音頻，但會留出空隙。
• Pasting clips inserts them where ever the scrubber is, i.e. where you clicked last.
  粘貼剪輯會將其插入到洗滌器所在的位置，即您最后單擊的位置。
• The Trim Tool acts as a Crop Tool, leaving the audio where it is in the timeline.
  修剪工具充當裁剪工具，將音頻保留在時間軸中。
• You can add multiple tracks and use them like layers to better arrange your audio piece.
  您可以添加多個軌道，并像分層一樣使用它們，以更好地安排音頻片段。

Hopefully this exercise will give you a feel for the really basic edits you can make to tracks. They’re the foundation of all of the more advanced stuff you’ll be doing, so executing them quickly and efficiently will save loads of time later on. If this is your first Audacity How-To, here are the other articles in this series so far:

希望本練習將使您對可以進行跟蹤的真正基本編輯感到滿意。 它們是您將要執行的所有更高級的工作的基礎，因此快速有效地執行它們將節省以后的時間。 如果這是您的第一個Audacity How-To，這是迄今為止該系列的其他文章：

• The How-To Geek Guide to Audio Editing: the Basics

  音頻編輯入門指南：基礎知識

• The How-To Geek Guide to Audio Editing: Basic Noise Removal

  音頻編輯入門指南：基本噪聲消除

• How to Add MP3 Support to Audacity

  如何為Audacity添加MP3支持

翻譯自: https://www.howtogeek.com/56264/the-how-to-geek-guide-to-audio-editing-cutting-trimming-arranging/

音頻剪切

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