# Classroom Lab 3: Design Audio Effects With Words and Your Voice

> Hands-on lab: design audio effects by describing them or imitating them with your voice, then A/B the result before you apply it.

Web page: https://spatial9.ai/blog/academy-lab-design-effects-with-voice
Author: Spatial9 Team
Published: 2026-10-16. Updated: 2026-10-16.

## Key takeaways
- Describe it turns plain-language descriptions or 8-second voice sketches into a chain of real processors.
- Niner shows what it heard from your recording and says whether the design reshapes, replaces or adds to your current chain.
- The Preview player compares Dry (A) and Effect (B) on the stem, the whole mix or a neutral beep, with 4 to 16 second loops.
- Refine with one-change follow-ups such as "less wet, keep the attack", and nothing changes until you apply it.

In this lesson: You will design original effects without touching a single knob. You will describe a sound in words, imitate it with your voice in an 8-second sketch, read what Niner heard, and judge the result with the A/B Preview player before you apply it. You will also learn to refine an effect with follow-up requests.

Every producer has had this moment: you can hear the sound in your head, but you do not know which plugin, which setting or even which word will get you there. You end up scrolling presets for an hour.

The classroom gives you a different path. At the top of the Effects Rack library sits Describe it, where you can explain the effect you want in plain language, or simply make the sound with your mouth. Niner turns that into a real chain of processors that you can preview, tweak and keep.

In The Effects Rack you learned the 28 processors and 16 collections. This lab builds on that knowledge, because the better you understand what processors do, the better you can judge what Niner designs.


## What you will learn

- How to write a description that leads to a useful effect.
- How to record a voice sketch and what Niner listens for.
- How to read a design: reshape, replace or add, and the processor order.
- How to judge an effect with the Preview player on a stem, the mix or a beep.
- How to refine an effect with follow-up requests.
- How sound imitation connects to research on vocal sketching.

The rest of this lesson is free with a Spatial9 account: https://spatial9.ai/blog/academy-lab-design-effects-with-voice