How to crop a song on the phone Xiaomi Redmi 9: all the ways from standard to professional

Cutting audio files on the smartphone Xiaomi Redmi 9 — A challenge faced by both amateur musicians and regular users who want to create a ringtone or shorten a stori track, despite the modest specifications of the model (Helio processor). G80, 3/4 GB of RAM, the phone handles basic sound processing without lags. The key is to choose the right tool.

In this article, we will discuss 5 working methods: from built-in functions MIUI You'll learn how to maintain original sound quality, avoid pruning noise, and even automate the batch processing process. And at the end, you'll see a comparison table of all the ways in terms of speed, convenience and supported formats.

1. the standard appendix "Music" in MIUI: lip-service

Many Redmi 9 users are unaware that the Mi Music player (or "Music" in Russian firmware) has a built-in editor, a feature hidden in the play menu, but allows you to crop tracks without installing additional programs, the main advantage is the lack of advertising and unnecessary permissions.

To get started:

• 📱 Open the Music app** and select a track from the library.
• ⏯️ Click on the play button, then tap on the album cover (or track icon).
• ✂️ In the lower menu, the “Strip” button will appear** (on some firmwares – “Edit»).
• 🔄 Drag sliders on the timeline to highlight the desired fragment.
• 💾 Click Save and select the folder (recommended Ringtones for ringtones).

Limitations of the method:

• 🚫 Only formats are supported.mp3,.m4a,.wav (no) DSD or FLAC).
• 🎛️ There is no precise millisecond adjustment, only a visual approximation.
• 🔊 If you save, you may lose your markings. ID3 (performer, album).

⚠️ Note: If the Cut button is missing, update the Music app via Google Play or check the firmware region. MIUI (EEA) The function is available from version 12.0.3.0.

2.Ringdroid Appendix: Free and Watermarkless

For Redmi 9 owners who need more accuracy than a standard player, Ringdroid, an open source lightweight app (only 3MB), will do the job. It not only cuts tracks, but also optimizes them for ringtones, notifications or alarm clocks.

Step-by-step:

1. Download Ringdroid from Google Play.
2. Open the application and select the file via Load from file** (or allow storage access).
3. On the wave chart, drag and drop the Start and End markers to highlight the snippet.
4. 🔍 For fine-tuning, use the button "Zoom"** (magnifying glass) - this will allow you to trim with an accuracy of 0.1 seconds.
5. Save the file in format.mp3 or.m4r (iPhone).

The benefits of Ringdroid:

• 🎵 Support for formats.mp3,.wav,.aac,.flac (rare for mobile editors).
• 📊 Sound wave visualization for precise cropping.
• 🔄 The ability to listen to a fragment before saving.

⚠️ Note: When trimming.flac files in Ringdroid, the bitrate is automatically reduced to 320 kbps. If maintaining original quality is critical, use Lexis Audio Editor (see Section 4).

3. Online services: fast, but with risks

If you don't want to install software, you can clip the song right in your browser, MP3Cut They work on any device, including the Redmi 9, but have hidden pitfalls.

How to use (by example) MP3Cut):

1. Open it in your browser. MP3Cut.
2. Click “Open File”** and download the track from your phone.
3. Drag sliders on the scale or enter the start/end time manually.
4. Select the format of the output file (mp3, m4r, ogg).
5. Click "Cut" and download the result.

The advantages and disadvantages of the online method:

⚠️ Note: When uploading files to online services, avoid tracks with licensing restrictions (such as those purchased from iTunes or downloaded from Spotify). IP when pirated material is found.

4. Lexis Audio Editor: for professional processing

If you want more than just cropping, but full editing (overlay effects, volume normalization, noise removal), install the Lexis Audio Editor. The app weighs 15 MB, but offers functionality comparable to Audacity on a PC.

Key opportunities:

• 🎛️ 10 band equalizer for sound correction.
• 🔇 Removing background noise and clicks.
• 📏 Accurate cropping with spectrogram display.
• 🔄 Support for batch processing (up to 50 files at a time).

How to cut a track in Lexis:

1. Import the file through Open** (cloud storage is supported).
2. Select the fragment with a mouse or set the boundaries manually in the format of mm:ps.ms.
3. Click "Trim"** in the top menu.
4. Apply effects (optional): Normalize → -3 dB for volume levelling.
5. Export in.mp3 (bitrate up to 320 kbps) or.wav (no loss).

System requirements for Redmi 9: the application is stable, but when processing files longer than 10 minutes, it is recommended to close the background tasks (especially the application). MIUI Optimizer).

5. Automation: Tasker + AutoTools for Packet Trimming

For advanced users who need to crop dozens of files regularly (for example, for podcasts or other applications). DJ-Sets, fit the Tasker bundle + AutoTools. This method requires customization, but allows you to create scripts like "stripped all tracks in a folder." Download/Music before 30 Seconds and save to Ringtones».

Step-by-step:

1. Install Tasker and AutoTools.
2. Create a new challenge («+» → «Task»**).
3. Add the action Plugin → AutoTools → File.
4. In the “Type” field, select “List Files” and specify the folder with the music.

Example of code for Tasker (import via Tasks) → Import):

Task: Trim_Music_Auto




A1: List Files [ Dir:Download/Music Match:.mp3 Recurse:Off ]




A2: For [ Variable:%ef(1) Items:%aft_files() ]




A3: AutoTools Audio [ Configuration:Command: Trim




Input File: %ef(1)




Start Time: 00:00:00




End Time: 00:00:30




Output File: /storage/emulated/0/Ringtones/trimmed_%ef(1).mp3 Timeout (Seconds):60 ]




A4: End For

⚠️ Note: When using Tasker on Redmi 9, turn off battery optimization for both apps (Settings) → Annexes → Application management → Battery → Without restrictions, otherwise scenarios may not work in the background.

💡

If you need to trim many files in one template (for example, the first 20 seconds of each track), use the Batch Audio Trimmer from F-Droid.

Comparison of all methods: what to choose?

To make it easier, we've put the key parameters in a table, and you need to be mindful of your tasks: ringtones will be enough for a standard player, and you need Lexis Audio Editor to process podcasts.

💡

For most tasks on Redmi 9, Ringdroid is optimal – it is free, accurate and does not load the system. Online services are suitable for one-time cropping, and Lexis Audio Editor is suitable for professional work.

Frequent Mistakes and How to Avoid Them

Even with simple tools, Redmi 9 users are facing problems, and here are the common mistakes and solutions:

• 🔇 Sound distortion after cropping: Check the bitrate of the output file. Ringdroid defaults 192 kbps - increase to 320 kbps in export settings.
• ⏳ Long processing: On Redmi 9 with 3GB of RAM, close the background apps (especially Facebook and the likes of Facebook) MIUI Launcher to free up memory.
• 📱 App crashes: Update firmware to the latest version MIUI (At the time of writing, 12.5.7. There are audio processing bugs in older versions.
• 🔊 Missing sound in cropped file: Make sure you don't highlight a snippet with complete silence. In Lexis Audio Editor, turn on waveform display (View) → Waveform).

If the file is not played as a ringtone after pruning:

1. Check the save folder: ringtones should lie in /storage/emulated/0/Ringtones/.
2. Restart your phone - sometimes MIUI It does not update the library immediately.
3. Make sure the file format is —.mp3 or.m4r (iPhone).

FAQ: Answers to popular questions