Start with a short segment
A practical loop is usually ten to twenty seconds long. That is long enough to keep context, but short enough to notice pronunciation, pauses, and words that disappear in fast speech.
Local MP3 Practice
AB Repeat Player
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Choose an MP3 file
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Point A
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Point B
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Speed
1.00x
Original audio exercise
Can you hear the one changed note?
Two four-note phrases sound almost the same. Listen to the original sample, compare the phrases, then check which note changes.
The preset loads the audio and sets A/B. Press Play when you are ready. Selecting your own MP3 replaces the sample.
Check the answer
The third note changes: E4 at 3.0 s becomes F4 at 5.0 s. The first, second and fourth notes are the same. Try humming the two phrases before looking at the note names.
Practice guide
How to use A/B repeat for listening and speaking practice
AB Repeat Player is useful for language listening, shadowing, music practice, interviews, lectures, and transcription work. Instead of replaying a whole file, you can focus on one short section and repeat it until the rhythm, words, or details become clear.
Slow down difficult audio
If a sentence is too fast, try 0.75x or 0.5x first. Once you can hear the details, return to 1x and then test yourself at 1.25x or 1.5x to build confidence.
Keep private audio local
Your MP3 file is selected from your own device and played by the browser. It is not uploaded to this website, so the tool works well for personal recordings and study files.
A simple practice routine
Listen once at normal speed, set point A and point B around the hard part, turn on AB loop, repeat it slowly several times, then speak or play along before moving to the next section. For more structured methods, read the learning resources.