編輯適用於 Windows、macOS、線上和行動電話的 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 上編輯 M4A 文件

1. 多合一M4A編輯器

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.

否則，按一下剪刀圖示可使用向 M4A 檔案新增淡入淡出、剪下、分割和合併效果等功能。

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 精選的軟體確實名副其實，是一款多功能 M4A 編輯工具。令人驚訝的是，該工具支援多種音訊和視訊格式，例如 MP3、M4A、MP4、AAC、WMA、WAV 等。此外，確保用戶始終獲得高品質的匯出，因為該工具透過高速導出技術提供無限的文件大小上傳，可以更快地處理和匯出 WAV 文件，同時保持文件的品質。

2. 開源且強大的M4A編輯器

一款也可用於錄製的開源 M4A 編輯器 Audacity 正是流行的 Audacity。憑藉多年的音訊製作專業知識，該程式是清單中最受歡迎和最廣泛使用的工具。它以其錄製音樂、編輯、混音和組合歌曲的能力而聞名。它還可用於編輯和產生用於播客的 M4A 檔案。相容於其他文件格式，WAV、MP3、MP2等；它還使其成為輕鬆進行 M4A 編輯和錄製的靈活工具。

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.

對於簡單的 M4A 編輯，Audacity 是一款出色的應用程序，因為它免費且有助於高效工作。此外，顏色追蹤特性很有用，因為它們能夠實現標籤部分的多重追蹤。一次處理多個軌道的缺點是程式只能一次管理一定數量的軌道。

第 2 部分：線上編輯 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 確實是一款用戶友好的工具，具有簡單的介面，專門用於創建 M4A 檔案的精確剪切。該服務速度快，無需安裝應用程式即可使用。因此，它的功能僅限於剪切功能，無法執行其他 M4A 編輯任務，例如添加淡入淡出效果、修剪、分割等。

第 3 部分. 在手機上編輯 M4A 文件

受桌面軟體版本的啟發，WavePad 行動版具有相同的介面，這使得更容易熟悉該應用程式。該行動應用程式可在 Android 和 iOS 裝置上免費下載，廣泛支援音訊格式，以確保該工具在編輯音訊檔案時的多功能性。此外，其 M4A 編輯功能提供廣泛的功能和效果，例如輕鬆剪切、修剪、複製、貼上、插入、靜音和自動修剪 M4A 檔案。

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.

也就是說，WavePad mobile 無疑是一款功能強大的行動 M4A 編輯器應用程序，它允許用戶對其 M4A 檔案執行幾乎所有可能的操作。該應用程式非常適合僅擁有行動裝置且總是在旅途中的用戶。

第 4 部分：有關如何編輯 M4A 檔案的常見問題解答

結論

由於相容性問題和某些音訊編輯器的支援有限，跨多個平台（包括 Windows、macOS、網際網路工具和行動電話）編輯 M4A 檔案可能很困難。與 WAV 等廣泛接受的格式相比，M4A 檔案在品質和壓縮之間提供了巨大的折衷，使其能夠有效存儲，同時保留可觀的音訊保真度。但是，您可以使用正確的工具和程式輕鬆編輯 M4A 文件，保證高品質輸出和多種編輯選擇，例如桌面版 FVC Video Converter Ultimate、網頁版 Aspose Audio Cutter 和WavePad 的行動版本。