How to crop recording from a tape recorder on Xiaomi: full instruction

Xiaomi’s modern smartphones have long been powerful multimedia centers that can not only reproduce but also process sound. The built-in Recorder app is one of the most commonly used tools for students, journalists and ordinary users who need to quickly capture important information. However, after recording, it often becomes necessary to remove unnecessary pauses, cut off the introduction or cut a specific fragment to send to the messenger.

Fortunately, MIUI and its successor HyperOS provide built-in tools for basic audio editing that do not require third-party software. Many owners of Redmi and POCO devices do not even realize that the cropping feature is already built into the standard interface. In this article, we will discuss in detail an algorithm of actions that will allow you to quickly and accurately edit any audio file directly on the device.

The editing process on different versions of firmware may differ slightly visually, but the logic of the work remains the same for the entire Xiaomi ecosystem. We will consider both standard methods available out of the box and alternative options in case the built-in functionality seems limited to you. Understanding these nuances will help you save time and effectively manage the media library of your gadget.

Preparation for editing and dictaphone interface

Before you start cutting, you need to find the file you want in the record list. The Recorder interface is designed minimally: immediately after you run, you see a list of all the saved audio files, sorted by date of creation. If you have a lot of records, you can search by title or go to the category tab where the files are divided into Interviews, Lectures and Conversations.

To get started, click on a specific entry to open the play screen. This is where the main toolkit for managing the track is located. At the bottom of the screen, you will see a slider timeline, control buttons (Play/Pause) and a menu of additional options. It is important to note that the standard editor allows you to work only with files created inside this application, although new versions of Android will allow you to import external files.

In the upper right corner or lower bar (depending on the MIUI version), there is a menu button, often denoted by three dots or a pencil icon, and clicking on this element opens up a list of available actions, among which we are interested in "Edit" or "Trim", which is the feature that activates the audio track markup mode.

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Before you start editing, make sure that the file is not protected from changes and is not system-based.

Step-by-step: how to cut audio file

Once you enter editing mode, you will see a visual waveform of recording, which is a graphical representation of the sound wave, where the peaks correspond to loud sounds and the straight lines correspond to silence. To prune accurately, you need to determine the beginning and end of the piece you leave behind. The standard interface offers two sliders: the left represents the beginning, the right represents the end of the allocated area.

Move your sliders across the screen to set boundaries. For more accuracy, you can use left and right scroll buttons that shift the selected area with minimal pitch, which is especially useful when you need to crop a record to within a millisecond, such as removing the click of a microphone at the beginning.

When the area is allocated, the system will offer two options: "Save" (rewrite the original) or "Save as" (create a copy). It is strongly recommended to choose the second option, so that the original record remains unchanged in case of error.

⚠️ Note: When choosing the option to rewrite the original file, it will not be possible to restore the original version of the file through standard system tools. Always back up before radical editing.

Fine tuning and noise removal

The functionality of the built-in voice recorder is not limited to simple edge trimming. Xiaomi users have a tool for suppressing background noise that is activated before recording or used after the fact in some versions of the software. However, if your goal is to cut a specific piece from the middle of a long lecture, standard means to do this is more difficult, since they are focused on cropping the beginning and end.

You often have to use the "save a piece" method to work with the middle of a file, so you single out the piece you want, save it as a new file, and then, if you need it, delete the extra one from the original. This may seem cumbersome, but it guarantees data safety. In recent HyperOS updates, a more advanced editor has appeared that allows you to break the track into parts.

Also worth paying attention to the format of the save: by default, the recorder uses the format.m4a or.mp3, which have good compression. If you plan to further process on the computer, it is better to choose the maximum quality of the recording in the settings before the session begins.

Using third-party applications for advanced editing

If built-in features aren’t enough, such as gluing multiple records or cutting the middle in one action, apps from Google Play will come to the rescue. The store offers dozens of audio editors that integrate with the system and allow you to open files directly from the gallery or file manager.

Popular solutions like Lexis Audio Editor or MP3 Cutter and Ringtone Maker offer similar functionality to professional studio programs, allowing you to see a more detailed wave, apply fade effects (Fade In/Fade Out) and accurately edit any parts of the track.

Installing third-party software requires attention to permissions. The application will need to be given access to storage and microphone. Once installed, the algorithm is simple: open the application, select the file from the list, make edits and save the result to the desired folder.

• 🎚️ Lexis Audio Editor – a powerful tool with support for multi-track editing and noise reduction.
• ✂️ MP3 Cutter is a lightweight application, sharpened specifically for quick trimming and creating ringtones.
• 🎵 Audio Editor Pro – combine “all in one”, which also allows you to change the playback speed and tonality.

Where are the clipped files stored and how to find them

After a successful pruning, the question arises: where did the file go? By default, all the records of the recorder are stored in the device's internal memory in a hidden or system folder. /MIUI/sound_recorder/ or /Recorder/ root-catalog.

To find a file without wandering through system folders, the easiest way to use the standard File Manager application is to have an Audio or Records category, where all the audio files on the device are collected, and the cropped versions will have a "(1)" or " edit" or a time stamp in their title unless you have renamed them manually.

For ease of transferring files to a computer or to the cloud, you can change the way you save them in the settings of the recorder itself. SD-card as the main storage, which saves space in the internal memory of the smartphone.

Frequent problems with audio on Xiaomi

Users may experience a situation where the edit button is inactive or the file is not saved, most often due to a lack of free memory or damage to the file system of the record, and the problem may lie in the access rights: if you tried to edit a file downloaded from the messenger, the system could block a direct change.

Another common difficulty is desynchronizing sound and image when viewing the wave, which sometimes happens on older Redmi models, in which case it helps to restart the application or clear its cache through the Android settings menu.

If the file is distorted after it's been cropped, try converting it to another format, which is hard to do with built-in tools, so you'll have to use third-party converters or online services again.

⚠️ Warning: Do not attempt to edit the system files of the recorder through root rights without creating a backup.This can lead to a complete failure of the Record application and the loss of all archives.

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The built-in voice recorder editor is ideal for fast clipping of the edges of the recording, but for complex editing (cutting the middle, gluing) it is better to use specialized applications from the Play Market.

Questions and Answers (FAQ)