---
title: "Live Frequency Spectrum in the DSP Designer – nnounce"
slug: "spectrum-analyzer"
description: "Real-time FFT display with configurable window, FFT size, overlap and log or linear frequency axis."
updated: 2026-08-17T12:20:40Z
published: 2026-08-17T12:20:40Z
canonical: "docs.simpleway.cloud/spectrum-analyzer"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.simpleway.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Spectrum analyzer

> The spectrum analyzer component shows a live frequency-spectrum view of audio, so you can visually monitor and analyze signal content in real time.

Attach the component to an audio component — such as a microphone or sine generator — to see its live frequency spectrum directly in the DSP Designer. It's configurable, with adjustable FFT length, window type, overlap, averaging, and a linear or logarithmic frequency axis.

![](https://cdn.document360.io/a3e67867-6316-451b-94ad-ec727ac9102a/Images/Documentation/image-6NBSL9MV.png)

The Spectrum Analyzer opens in its own tab and shows a live frequency plot of whatever audio component it's attached to — frequency (Hz) along the horizontal axis and magnitude (dBFS) on the vertical axis. The display updates in real time, so you can watch the spectrum of a microphone, sine generator, or other source as it plays.

You can tailor the view with several controls:

- **Frequency Range** — set the Min and Max frequency (here 20 Hz to 24,000 Hz) to zoom in on a band of interest, and choose a Logarithmic or linear **Frequency Scale**.
- **Magnitude Range** — set the Min and Max dB (here -200 dB to 0 dB) to adjust the vertical scale, and pick the **Spectrum Type** (e.g. Magnitude in dBFS).
- **FFT Configuration** — choose the **Window Function** (e.g. Hann), the **FFT Size** (e.g. 4096, which trades frequency resolution against responsiveness), and the **Overlap** (e.g. 75%) for smoother updates.
- **Display Options** — additional view settings such as display bins (cut off at the bottom of the screenshot).

In practice, this lets you verify signal content and tuning directly in the Designer — for example, confirming a sine generator's tone sits at the right frequency, checking the frequency balance of a microphone, or spotting noise and unwanted peaks across the spectrum.