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
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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.