Simple Explanation

The first sound that reaches your ears—coming straight from the source, with no reflections from walls or objects.

Concise Technical Definition

The portion of a sound wave that travels directly from the source to the listener without reflecting off any surfaces. It is the earliest and clearest part of a sound signal.

Layman-Friendly Analogy

Like a flashlight beam shining straight at you, direct sound comes right from the speaker to your ears without bouncing around the room.

Industry Usage Summary

Direct sound is critical for accurate imaging and clarity in both studio monitoring and home audio setups. Acousticians work to preserve direct sound while managing reflected and reverberant sound for balanced listening.

Engineering Shortcut

First-arriving, non-reflected sound path from source to listener.

Full Technical Explanation

Direct sound refers to the unreflected, primary sound wave that travels in a straight line from the sound source (such as a loudspeaker or instrument) to the listener. It is typically the most intelligible and highest-fidelity part of the signal, arriving before any reflected or reverberant sound. Its time of arrival and level are crucial for spatial localization, clarity, and imaging. In controlled environments like studios, room treatments are designed to enhance or protect the direct sound path. Excessive reflections can mask or blur the direct sound, reducing precision.