Trim AMR

How to Trim AMR Audio Online

1. Upload Your AMR File — Click "Choose Files" or drag and drop your .amr audio file. Batch trimming is supported.
2. Set Start Time and Duration — Enter the start time and duration in seconds or HH:MM:SS.sss format.
3. Download — Click "Convert" and download your trimmed AMR file. No sign-up required.

Why Trim AMR Files?

AMR (Adaptive Multi-Rate) is a compressed audio format designed for speech recording on mobile phones. It's the default voice memo format on many older Android phones and is widely used for phone call recordings. AMR files are very small (a 1-minute recording is typically 50–100 KB) but limited to speech-quality audio.

Trimming AMR files is useful for removing silence from voice memos, extracting a specific portion of a phone call recording, or cutting a long dictation down to the relevant section. Since AMR files are already heavily compressed, trimming preserves the original quality of the kept segment.

AMR Format Quick Facts

Feature	AMR
Sample rate	8 kHz
Bitrate	4.75–12.2 kbps
Audio type	Speech only (not music)
File size (1 min)	50–100 KB
Created by	3GPP (mobile standard)
Common source	Android voice memos, call recordings

Frequently Asked Questions

Can I trim AMR without losing quality?

Yes. Trimming removes unwanted portions while preserving the original audio quality of the kept segment.

Why are AMR files so small?

AMR uses aggressive compression optimized for human speech at very low bitrates (4.75–12.2 kbps). This makes it extremely efficient for voice recordings but unsuitable for music.

Can I convert AMR to MP3 after trimming?

Yes. Use our AMR to MP3 converter to convert the trimmed file for universal playback.

Can I batch trim multiple AMR files?

Yes. Upload multiple AMR files and set trim points for each. Download individually or as a ZIP archive.