Listening Tips
How to Speed Listen: Getting the Most from 1.5x and 2x Playback
Listenly Editorial · · 7 min read
If you listen to podcasts or audiobooks at 1x speed, you're leaving hundreds of hours on the table every year. Speed listening — playing audio at 1.5x, 1.75x, or even 2x — is one of the most effective productivity habits a serious listener can build. But done wrong, it turns content into a blur of unintelligible noise.
The Science Behind Speed Listening
Normal conversational speech runs at roughly 120–180 words per minute. The human brain can comfortably process spoken language at up to 400 words per minute. That gap is why you can listen at 1.5x and still follow everything — your brain has spare processing capacity at normal speed.
Multiple studies on audio comprehension have found that listeners retain information equally well at 1.5x compared to 1x. Comprehension starts dropping noticeably above 2.5x for most people, while 2x remains within an acceptable range for familiar topics.
How to Train Your Ear: A 4-Week Plan
Week 1: 1.25x on familiar content
Start with podcasts or audiobooks on topics you know well. The slight speed increase will feel natural within a day or two.
Week 2: 1.5x on familiar content, 1.25x on new topics
This is the sweet spot for most people. 1.5x saves roughly 30 minutes per hour of audio. Most podcasts and audiobook narrators sound completely natural at this speed.
Week 3: 1.75x on easy content
Interview podcasts, storytelling shows, and narrative nonfiction work well here. Dense academic material will still feel rushed — keep that at 1.5x.
Week 4: 2x selectively
By now your brain has recalibrated. Use 2x for review listens, content you've heard before, or topics where you're mainly checking for specific details.
What Works at High Speed (and What Doesn't)
Great at 1.75x–2x
- News briefings and daily update podcasts
- Interview shows where you know the guest
- Re-listens to favourite episodes
- Narrative nonfiction with a clear story structure
- Self-help and personal development audiobooks
Better at 1.25x–1.5x
- Complex technical or scientific content
- Language-learning audio
- Fiction with immersive narration you want to enjoy
- Dense philosophical or academic lectures
Stick to 1x
- Music
- Poetry or spoken word
- Live radio or anything where pacing is part of the experience
- Meditation and sleep content
The Comprehension Check
After your first week at a new speed, test yourself: can you summarise the last episode you listened to? Can you recall three specific points? If yes, your comprehension is intact. If you're drawing a blank, drop back half a step.
Using Listenly's Speed Controls
Listenly lets you set playback speed for each session, with your preference syncing across devices. The variable speed control is available on both the web player and the Android app. Set it once and forget it.
One Last Tip
When you come back to 1x after a few weeks of speed listening, normal speech will feel almost uncomfortably slow. That's your brain recalibrating — and it's a sign the habit is working.