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259 points zdw | 1 comments | | HN request time: 0s | source
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Optimal_Persona ◴[] No.41833049[source]
Also the audio frequency bandwidth is narrower on AM, so fewer treble frequencies.

TBH I think music from up to the late '60s (especially if originally released in mono) sounds really good, or at least more "era-appropriate" on AM radio. I remember my grandparents tuning in to easy-listening AM stations as I grew up in the '70s and '80s, to my ear Tennessee Ernie Ford's "16 Tons" or a classic Phil Spector "Wall of Sound" production sounds more "right" coming through the AM bands.

And, in the age of cellphone speakers and compressed MP3/Bluetooth codecs - I'm not sure how much people actually care about audio quality.

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1. duped ◴[] No.41834289[source]
Look, I'm an audio snob and will talk shit about terrible design of BT headsets that halve bandwidth in duplex until the cows come home.

But the reason that codecs have survived this long without substantial changes is because they're far and away good enough (*) for the vast majority of listeners. To the point where today, even trained listeners can't perceive a difference in audio quality between lossless and lossy encoded audio at high enough bit rates (which is 320kbps MP3, or comparable AAC which can be as low as 50% of that).

(*) what we don't talk about is the latency of the codec itself, where regardless of available compute resources is still atrocious outside of proprietary codecs. While a listener cannot perceive noticeable differences in fidelity, they can perceive the delay, and this is a problem that doesn't have good solutions outside of specialized equipment today, although OPUS (as a descendant of CELT) is pretty darn good for the cases that consumers care about. Professionals still spend oodles of money on the proprietary gear that have codecs that not even ffmpeg supports.

I would go so far as to say there is no practical benefit to uncompressed audio today at all. Lossy is fine for all consumers, and lossless encoding is faster to decode and playback (as well as encode and write) while using less disk/bandwidth than uncompressed for archival purposes.