Listening Notes

A long-running series for listeners who care about sound and recordings.

Covering audio fundamentals, playback architecture, audio analysis, signal and mastering, listening culture, and Mossca philosophy.

Audio Fundamentals

March 14, 2026 · Audio Fundamentals

PCM and DSD: Two Different Worlds

PCM and DSD represent two fundamentally different ways of storing digital audio. Understanding their differences helps clarify many debates in high-resolution audio.

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March 14, 2026 · Audio Fundamentals

Everything About DSD

What DSD is, how to identify suspicious DSD files, and how Mossca plays DSD with DoP, external DACs, and PCM fallback.

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Playback Architecture

Audio Analysis

March 14, 2026 · Audio Analysis

Why Spectral Analysis Alone Is Not Enough

Spectral analysis is one of the most common tools for evaluating audio files, but it only reveals part of the signal story. Understanding its limits helps interpret audio measurements more accurately.

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March 14, 2026 · Audio Analysis

Understanding Dynamic Range vs Loudness

Dynamic range and loudness describe different aspects of an audio signal. Understanding their relationship helps explain why some recordings sound more open while others sound consistently loud.

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Signal & Mastering

Listening Culture

Music Culture

Engineering Philosophy