The Complete Guide to Reverb & Delay | How to Use Spatial Effects

What Are Spatial Effects? Understanding Reverb and Delay

In music production, "spatial effects" are essential tools for adding depth and dimension to your tracks. Adding natural reverb to vocals, layering a dramatic echo onto guitar — all of that is handled by the two major effects: reverb and delay.

That said, many people use them without fully understanding what they're doing. In this article, we'll break down how reverb and delay work from the ground up, and share practical techniques to help you achieve a professional sound.

What Is Reverb?

Reverb is an effect that simulates the "reverberation" created when sound reflects off the walls and ceiling of a space. Think of the way sound blooms and slowly fades when you make noise inside a concert hall or cave — that's exactly what reverb recreates.

Key Reverb Parameters

• Room Size: Determines the size of the simulated space. Higher values produce the reverb of a larger room.
• Decay / RT60: Sets how long the reverb tail lasts before it fades out. A shorter decay sounds tight and controlled; a longer one sounds dramatic and expansive.
• Pre-Delay: The time gap between the dry signal and the onset of the reverb. Even a few tens of milliseconds can dramatically improve the clarity of a sound.
• Wet / Dry: The balance between the effected signal and the original. When using a send/return setup, it's standard practice to set Wet to 100% and control the amount via the channel send level.
• Damping: Controls the attenuation of high frequencies in the reverb tail. Increasing this value creates a warmer, more muffled decay.

Types of Reverb and When to Use Them

• Room Reverb: Natural reflections from a small room. Blends well with drums and percussion.
• Hall Reverb: The vast, expansive sound of a concert hall. Ideal for adding depth to strings and vocals.
• Plate Reverb: Modeled after a vintage analog device that used a large metal plate. A classic technique for adding shimmer and sheen to snares and vocals.
• Spring Reverb: The spring-based reverb found in guitar amplifiers. Known for its distinctive, springy twang — perfect for surf rock and similar styles.

What Is Delay?

Delay is an effect that repeats the original signal after a set period of time — essentially a digital echo. Unlike reverb, the individual repeats are clearly audible as distinct events. Despite its simple concept, delay can inject energy, movement, and groove into a track depending on how it's used.

Key Delay Parameters

• Delay Time: The amount of time between the dry signal and the first repeat. Syncing this to the BPM of your track is fundamental.
• Feedback: Controls how many times the repeat echoes. Be careful not to push this too high, or the repeats will pile up and muddy the mix.
• Wet / Dry: The balance between the effected and dry signals, just like with reverb.
• Sync: Locks the delay time to the project BPM. Syncing to tempo keeps the rhythm clean and prevents the effect from clashing with the groove.

Common Types of Delay

• Tape Delay: Modeled after classic tape echo machines, delivering a warm, analog sound. The repeats gradually degrade and darken, capturing that authentic vintage character.
• Ping-Pong Delay: Bounces the repeats back and forth between the left and right speakers. Great for emphasizing stereo width.
• Slapback Delay: A single short repeat in the 80–120ms range. A staple technique in rockabilly and country vocals.

Techniques for Combining Reverb and Delay

Professional mix engineers don't use reverb and delay in isolation — they combine them to create sounds with genuine depth and dimension.

The Golden Rule: Delay Before Reverb

The standard signal chain is to place delay first, followed by reverb. This way, the distinct echo "grains" created by the delay naturally dissolve into the reverb's space, resulting in a three-dimensional sound. Running them in reverse — reverb first, then delay — causes the reverb tail to smear before the echo even forms, which can quickly muddy up your mix.

Use Pre-Delay to Push Vocals Forward

Setting your reverb's Pre-Delay to around 20–40ms creates a small gap between the dry vocal and the onset of the reverb. This separation brings the vocal to the front of the mix and prevents it from getting swallowed by the reverb. It's an invaluable technique in dense, busy mixes.

Sync to Tempo to Enhance the Groove

Syncing your delay time to the eighth note or dotted eighth note of your BPM locks the repeats rhythmically to the track, tightening the overall feel. The "dotted eighth-note delay" — famously used in U2's guitar sound — remains a go-to choice for countless professionals to this day.

Try It Right Now in Your Browser — Spatial Effects in LA Studio

If you're thinking "I get the theory, but I don't have anything to practice on," then you need to check out LA Studio, a completely free browser-based DAW.

LA Studio comes with reverb, delay, compressor, and EQ built right into its mixer — no installation required, ready to use instantly from your browser. It also features WebGPU support for fast AI processing, making it a powerful tool for remixing when combined with vocal removal and stem separation. No download, no account — just open and play.

Summary: Master Spatial Effects and Take Your Music Production to the Next Level

Reverb and delay are simple effects, but a solid understanding of their parameters and how to combine them can transform the character of your sound. Let's recap the key takeaways:

• Reverb handles "spatial width"; delay handles "temporal repetition"
• Use Pre-Delay to separate vocals from the reverb tail
• Sync delay time to BPM to work with the groove
• The standard effect order is delay → reverb
• Use a send/return setup to balance CPU load and mix transparency

The fastest way to improve is simply to experiment with different settings on your own audio. With LA Studio, you can start experimenting right now from a single browser tab — so use this article as your guide and start chasing your own unique sound.

よくある質問（FAQ）

無料DAWでプロ品質の曲は作れますか？

十分可能です。Cakewalk by BandLabやGarageBandなど、無料でもプロ級の機能を備えたDAWが多数あります。プラグインやサンプルを活用すれば、商用レベルの楽曲制作も実現できます。

ブラウザDAWとインストール型DAWの違いは？

ブラウザDAWはインストール不要で、どのPCからでもすぐに使える手軽さが利点です。一方、インストール型はオフライン動作やVSTプラグインの対応など、より本格的な制作に向いています。LA Studioのようなブラウザ型でもWebGPU対応でネイティブ並みの処理速度を実現しています。

初心者におすすめのDAWは？

まずはGarageBand（Mac）やLA Studio（ブラウザ）のような無料で始められるDAWがおすすめです。操作に慣れてきたら、Cakewalk by BandLabやReaperなど、より多機能なDAWに移行するのが良いでしょう。