Smartphone owners Xiaomi, Redmi i POCO often use the built-in Voice Recorder application to record lectures, interviews or personal notes. However, during the recording process, unnecessary noise inevitably arises at the beginning or end of the file, which spoils the overall impression. The standard trimming function allows you to quickly remove unnecessary fragments without losing the quality of the original material.
The editing procedure may not seem obvious to new users, especially after updating the shell MIUI or switching to HyperOS. The application interface is undergoing changes, but the basic principle of working with audio tracks remains unchanged. You do not need to install complex software to complete a simple task.
In this article we will look in detail at how to use the standard system tools, and also consider alternative methods if the built-in functionality is not available for some reason. You will learn how to save edited files correctly so as not to lose the original.
Using the built-in editor in the Voice Recorder application
The fastest way to edit is to use the native functionality. The Voice Recorder application on devices is Xiaomi equipped with a basic editor that allows you to work with track length. Open the application and find the desired entry in the list.
Tap on the file to open it in playback mode. At the bottom of the screen or in the “More” menu (three dots) you will find an edit button. It is usually indicated by a pencil or scissors icon. After clicking, a visualization of the sound wave will open.
Sound Wave displays the recording volume over time. You need to select the area that you want to save, or, conversely, mark the area to delete. Move the sliders along the edges of the selection to fine-tune the borders.
After adjusting the borders, click the save button. The system will prompt you to save changes to a new file or overwrite the current one. Always choose to create a copy so that you can roll back changes in case of an error.
⚠️ Attention: If you overwrite the original file, it will be impossible to return the deleted part without special data recovery apps.
Before you start editing, make sure that there is enough free memory on your device, since creating a copy of the file requires additional space.
Step-by-step guide for trimming audio files
For those who prefer to act strictly according to the algorithm, a detailed sequence of actions is presented below. It is relevant for most modern models of the line Redmi Note and flagships of the series Mi.
First you need to launch the application and log in to your account Xiaomi Cloudif synchronization is enabled. This ensures that your recordings are not lost if there is an accidental failure. Select a specific file from the list of recent entries.
In viewing mode, click on the edit icon. The interface will offer two modes: “Crop” and “Split”. To remove the edges of a recording, select the first option. Stretch the selection over the desired area.
- 🎧 Precisely adjust the start of the selection so as not to cut off an important introductory phrase.
- ✂️ Use the function of previewing the selection before saving.
- 💾 Click “Save As” to create a new file with the suffix "_edit" in the title.
If the interface of your device is different, you may need to update the application through the store GetApps. Developers regularly improve the functionality of built-in utilities.
☑️ Check before saving
Working with third-party audio editors
Sometimes the built-in functionality is not enough for complex processing. For example, if you need to cut out the middle of a recording or apply effects. In such cases, third-party applications from Google Play.
A popular solution is the application MP3 Cutter and Ringtone Maker. It allows you to work with various formats, including .m4a and .mp3, which are often used by the voice recorder Xiaomi. The interface of such apps is intuitive.
Install the application and give it access to the storage. Find the folder MIUI/sound_recorderwhere voice recordings are saved by default. Import the desired file into the editor.
Cutting Accuracy in third-party applications it is often higher than in standard ones. You can manually set start and end times with millisecond precision. This is critical when preparing materials for podcasts or formal meetings.
⚠️ Warning: Third-party applications may request excessive permissions. Check access rights before installing unknown software.
Why may the built-in editor not work?
In some regions or on custom firmware, the functionality of the built-in voice recorder may be limited by the manufacturer due to licensing restrictions on codecs.
File formats and compatibility
Dicta recorder on smartphones Xiaomi default saves recordings in .m4a (AAC) format. This format provides good quality with a small file size, but not all older players and editors support it correctly.
When you try to open such a file in a simple editor, you may encounter an import error. In this case, it is recommended to first convert the entry to universal .mp3. Many audio editors do this automatically when saving.
| Format | Sound Quality | File Size | Compatibility |
|---|---|---|---|
.m4a |
High | Small | Medium |
.mp3 |
Good | Average | High |
.wav |
Maximum | Huge | High |
.amr |
Low | Minimal | Low |
If you plan to transfer the recording to a computer or other device, it is better to use .mp3. This ensures that the file will open on any operating system without installing additional codecs.
Using the MP3 format is the gold standard for compatibility, although M4A is more efficient at compressing data without loss of quality.
Where recordings are stored and how to find trimmed files
Understanding the file system Android helps you quickly find the audio recordings you need. By default, all voice recorder files are saved in the internal memory of the device in hidden or system folders.
The standard path to the originals looks like Internal memory/MIUI/sound_recorder. Trimmed files, if you selected the “Save As” option, may appear in the same folder or in a subfolder edited, depending on the version MIUI.
For easy searching, use the built-in Explorer application. Sort files by Audio type or by date modified. This will allow you to instantly see the newly created copies after editing.
When connecting your smartphone to your PC via USB, make sure that the file transfer mode is selected MTP. Otherwise, the computer will not see the internal memory and the folder with recordings.
- 📂 The folder
sound_recordermay be hidden in some file managers. - 🔍 Use search by extension
*.m4ato quickly find all recordings. - 🔄 When synchronizing with the cloud, files may be duplicated in the folder
Xiaomi Cloud.
⚠️ Attention: The folder structure may change after a major system update. If you do not find files in the old path, check the “Audio” section in the standard file manager.
Solving common problems when trimming
Users often encounter a situation where the save button is inactive or the file does not play back after trimming. Often the reason lies in a corrupted file index or lack of resources.
If the application crashes when trying to edit a long record (more than 2 hours), try splitting the file into parts before trimming. Processing large amounts of data requires a significant amount of RAM RAM.
If the cropped file is quieter than the original, check the sound normalization settings. Some editors automatically reduce the volume to prevent clipping (distortion).
Rebooting the device often solves problems with freezing audio processing processes. Clearing the cache of the Voice Recorder application in the system settings can also eliminate software failures.
Why does not the file open after trimming?
The saving process was probably interrupted or the disk ran out of space. Try opening the original and repeating the operation, freeing up memory.
Is it possible to restore the deleted part of the recording?
Without first creating a copy, it is impossible to restore the trimmed data using standard means. You will need specialized software to recover deleted files.
How to trim a recording if there is no editor button?
In outdated firmware versions, this function may have been missing. Update the Voice Recorder application via GetApps or install a third-party editor from the Play Market.
Does trimming affect sound quality?
When simply removing fragments (cut), the quality of the rest of the recording does not suffer unless re-encoding occurs with a lower bitrate.