Audio Bitrate Quality

Discussions center on whether high-bitrate lossy audio codecs like MP3, AAC, or Opus (e.g., 128-320kbps) are perceptually indistinguishable from lossless formats, with references to blind tests, placebo effects, sampling rates, and playback hardware.

📉 Falling 0.3x Hardware
4,268
Comments
20
Years Active
5
Top Authors
#8868
Topic ID

Activity Over Time

2007
2
2008
12
2009
36
2010
49
2011
105
2012
189
2013
73
2014
240
2015
293
2016
185
2017
324
2018
190
2019
250
2020
217
2021
564
2022
411
2023
447
2024
417
2025
228
2026
36

Keywords

e.g MOS CD PESQ codinghorror.com googleblog.com MB LAME AB i.e bitrate audio codecs music mp3 lossy flac quality transparent uncompressed

Sample Comments

oittaa • Oct 2, 2023 • View on HN

Not just acceptable. For most people it's basically indistinguishable from uncompressed CD audio.

sjwright • Sep 4, 2016 • View on HN

Why not stream in ~256kbps AAC or Opus? The audible quality drop is objectively proven to be zero. Make peace with the placebo effect and enjoy your life.

pcthrowaway • Dec 14, 2014 • View on HN

I'm not sure what bitrate they use, but if it's 128kbps+ the difference in quality should be small to nonexistent.

grecht • Apr 1, 2021 • View on HN

Can you hear the difference between 320 kbit/s mp3 and lossless formats?

rasz • Feb 8, 2023 • View on HN

Its not about bitrate, its about sampling and advertising nonsense only Bats could hear.

baddox • Jul 18, 2011 • View on HN

Are you doing the encoding and performing A/B tests yourself? There are all kinds of things that can hurt audio fidelity a lot worse than bitrate. Some MP3's are poorly encoded by some crappy shareware application. Some are transcoded from an already-lossy source. Some productions will compress better than others (supposedly, some producers actually mix and master with inevitable compression in mind).

oynqr • Jan 26, 2022 • View on HN

Why waste a bunch of bandwidth on 96 kHz when 44.1 is fine?

teilo • Feb 23, 2021 • View on HN

That's only true for uncompressed audio.

IncreasePosts • Mar 7, 2025 • View on HN

Why do 96 or 128khz sampled audio files sound better than 48khz ones? I blind tested and could always tell the difference between them, but not between 128 and 192

teilo • Feb 23, 2021 • View on HN

Your Airpods are recompressing everything to 256kbps AAC to transmit over bluetooth. So once again, psychoacoustic bias.