SoundBound Blog

Audio Engineering for the Browser

Technical deep-dives on Web Audio API, real-time normalization, and building audio tools in JavaScript.

What Is the Loudness Penalty in Podcasts (and How to Avoid It)

The loudness penalty is the volume loss your podcast suffers when a streaming normalizer turns down an over-compressed episode to hit its LUFS target. Here's what causes it, how to measure it, and the practical fix that eliminates it without sacrificing dialogue punch.

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How to Fix Podcast LUFS for Spotify and Apple Podcasts

Spotify targets -14 LUFS (now -1 LUFS for voice since 2024). Apple Podcasts targets -16 LUFS. The two numbers don't agree — here's the practical 2-step fix that hits both targets at once, without clipping, without re-encoding.

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Audio Compression vs Normalization: What's the Difference?

Compression and normalization both adjust volume — but they work completely differently. Normalization scales the whole signal uniformly. Compression reshapes the dynamic range in real time. Here's the clear breakdown, plus why most streaming "normalizers" are secretly running a compressor.

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How to Fix Volume Differences Between Streaming Services

Netflix at -27 LKFS. Spotify at -14 LUFS. YouTube at -14 LUFS. Podcast apps with no standard at all. Every service uses a different loudness target — which is why you're constantly adjusting the volume. Here's how to fix it permanently with real-time audio normalization.

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How to Normalize Audio on YouTube (Without Extensions)

YouTube volume keeps changing — ads blast you, quiet channels disappear, and the built-in normalization only covers part of the problem. Here's why it falls short and how to fix YouTube audio for good at the stream level.

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Why Are Ads Louder Than Videos (And How to Fix It)

Ads are 10-20 dB louder than the video you were watching. Here's why platforms allow it, what the CALM Act doesn't cover, and how real-time audio normalization stops it for good.

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Best Audio Settings for Gaming and Streaming

Game audio is a chaos of competing loudness levels — Discord voices, SFX explosions, stream alerts, and background music all fighting for your ears. Here is how to actually fix it with normalization and compression.

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How to Protect Your Hearing While Streaming

The average person streams 4+ hours a day at volumes that would trigger industrial hearing protection warnings. Here's what the research says about safe listening levels, why volume spikes are the real danger, and what you can actually do about it.

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Real-Time Audio Normalization in the Browser

Every streaming platform targets a different loudness level. Spotify at -14 LUFS. Netflix at -27 LUFS. Your browser tabs don't know these standards exist — but with the Web Audio API, they can. A technical walkthrough of how dynamic range compression works in real time, without any plugins.

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