编辑适用于 Windows、macOS、在线和移动电话的 M4A 文件

As the M4A file is not designed for all devices, so many audio editors struggle to handle this audio file format, resulting in difficulty for users to modify them. M4A is basically supported by all devices, it works a bit lighter on your devices as it is compressed, ensuring a smaller space, and tends to have decent audio quality. Fret not, as editing M4A files is still possible with our carefully selected software tools for Windows and macOs, online tools for web browsers, and mobile applications.

第 1 部分。在 Windows 11/10/8/7 和 macOS 上编辑 M4A 文件

1. 一体化 M4A 编辑器

This FVC-picked Video Converter Ultimate is a versatile and easy-to-use M4A editor. It is a software-based tool and is considered to be an all-in-one M4A editor as it houses features such as an M4A cutter, merger, compressor, noise remover, volume booster, etc. Having to function as both an audio and video editor with a simple interface, this is exceptional software for both Windows and Mac devices. To help you get started with the all-in-one M4A editor, here’s a quick guide to help you navigate the software effectively.

Step 1. Download and install the FVC-picked Video Converter Ultimate to your desktop.

Step 2. On the tool interface, click on the Add Files button to add your M4A file to the software.

Step 3. You can now edit your M4A file by selecting the Edit and Cut tool, which is situated just next to your uploaded M4A file after it has entered the tool.

Note: Click on the Magic Wand icon if you want the Volume Booster and Audio Delay function to your M4A file.

否则，单击剪刀图标即可使用“添加淡入淡出、剪切、拆分和合并效果”等功能将效果添加到您的 M4A 文件。

Step 4. After successfully editing and cutting your M4A file to your liking, click the Convert All button to start downloading it to the folder you've specified on your desktop.

FVC 选择的软件确实不负其作为一体化 M4A 编辑工具的声誉。令人惊讶的是，该工具支持多种音频和视频格式，例如 MP3、M4A、MP4、AAC、WMA、WAV 等。此外，由于该工具提供无限的文件大小上传和高速导出技术，可以更快地处理和导出 WAV 文件，同时保持文件质量，因此用户始终可以确保获得高质量的导出。

2. 开源且功能强大的 M4A 编辑器

开源 M4A 编辑器 Audacity 也可用于录音，它就是广受欢迎的 Audacity。凭借多年的音频制作专业知识，该程序是列表中最受欢迎和使用最广泛的工具。它以录制音乐、编辑、混音和组合歌曲的能力而闻名。它还可用于编辑和制作用于播客的 M4A 文件。它与其他文件格式（WAV、MP3、MP2 等）的兼容性也使其成为轻松编辑和录制 M4A 的灵活工具。

Step 1. Download and Install Audacity to your desktop.

Step 2. Once Audacity is installed, open the software. In the interface, open the M4A file you want to edit by clicking on the File section located in the upper-left corner of your screen and proceeding to click Open.

Step 3. Once the M4A file is uploaded to the tool, you can edit it using the featured tools.

Note: To create cuts, delete parts, apply effects, copy, paste, duplicate, or merge audio tracks in Audacity, click on the Edit section located in the upper-left menu of the tool. To modify the volume, apply fade effects, adjust pitch and tempo, and more, be sure to click the Effect section located in the same section.

Step 4. Once you are satisfied with all the changes you made in your M4A files, proceed to export your audio through File > Export Audio.

对于简单的 M4A 编辑，Audacity 是一款出色的应用程序，因为它免费且有助于提高工作效率。此外，颜色跟踪特性也很有用，因为它们可以对标签部分进行多轨跟踪。同时处理多个音轨的缺点是该程序一次只能管理一定数量的音轨。

第 2 部分。在线编辑 M4A 文件

To edit M4A files using an online or web-based tool, Aspose Audio Cutter presents an ideal solution for instant and rushed M4A editing. Specifically used for creating precise cuts to an M4A file, this web-based tool supports formats such as AAC, AIFF, FLAC, M4A, MP3, WAV, and more. This tool simply works by uploading your M4A file and selecting a specific time/duration to your M4A file you wish to cut and save.

Step 1. Go to Aspose Audio Cutter's official website.

Step 2. Upload or Drop the M4A file you wish to edit using the tool in the field provided on the website.

Step 3. Input your desired Cut Start and Cut End to precisely exclude the parts in your M4A you wish to remove, and simply click on the Cut button to start the process.

Step 4. Once you have cut your M4A file, click the Download Now button to save it to your desktop.

You can open it in your M4A player to check the effect.

Aspose Audi Cutter 确实是一款用户友好的工具，具有直观的界面，专门用于对 M4A 文件进行精确剪切。该服务速度很快，无需安装应用程序即可使用。因此，它的功能仅限于剪切功能，无法执行其他 M4A 编辑任务，例如添加淡入淡出效果、修剪、分割等。

三、在手机上编辑 M4A 文件

WavePad 移动版的界面与桌面版相同，因此用户更容易上手。这款移动版应用可在 Android 和 iOS 设备上免费下载，广泛支持音频格式，确保该工具在编辑音频文件时的多功能性。此外，其 M4A 编辑功能提供多种功能和效果，例如轻松剪切、修剪、复制、粘贴、插入、静音和自动修剪 M4A 文件。

Step 1. Go to your mobile app store and download WavePad mobile there.

Step 2. Once the app is installed, load your M4A file into the app by clicking on the Open icon located in the upper part of your app’s interface and wait for it.

Step 3. Once your M4A is loaded in the app, proceed to explore the app’s features to edit your M4A file. You can do so by placing your finger at the top-most part of the tool and swiping your finger from right to left to see features such as cut, copy, join, paste, and more. Once you find the tools you need for your M4A file, just click on them to apply them to your M4A file.

Step 4. Once you are done editing your M4A file, go back to the Home section, click on the Save button, and click Save File to download your edited M4A file to your mobile device.

尽管如此，WavePad mobile 无疑是一款功能强大的移动 M4A 编辑器应用，它允许用户对其 M4A 文件进行几乎任何操作。这款应用非常适合只有移动设备且总是在路上的用户。

第 4 部分。有关如何编辑 M4A 文件的常见问题解答

结论

由于兼容性问题和某些音频编辑器的支持有限，在多个平台（包括 Windows、macOS、互联网工具和手机）上编辑 M4A 文件可能很困难。与 WAV 等广泛接受的格式相比，M4A 文件在质量和压缩之间提供了很好的折衷，使其在保持可观的音频保真度的同时具有良好的存储效率。但是，您可以使用正确的工具和程序（例如 FVC Video Converter Ultimate 的桌面版、Aspose Audio Cutter 的网页版和 WavePad 的移动版）轻松编辑 M4A 文件，从而保证高质量的输出和各种编辑选择。