# Signal Lab — Explore sound/waveforms

> Generate and visualize sound waves with adjustable parameters and oscilloscope display. (iPhone/iPad app by Peter Wu.)

- Source: https://appshunter.io/ios/app/signal-lab/id1585573168 (this page in markdown: same URL + `.md`)
- Developer: [Peter Wu](https://appshunter.io/developer/1477787534)
- Category: Music, Music, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.2 · 1 MB
- Languages: English
- Released: 2021-09-17
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/signal-lab/id1585573168/reviews.md

## What is Signal Lab?

Generates sound from waveforms - Sine wave, Square wave, Triangle wave, and Sawtooths and visualize them in an oscilloscope.  You can change waveforms and adjust frequency and amplitudes and see/hear the changes in real time.

Use it for:
- Generate tone for audio tuning
- Science class demonstration
- Visual demonstration of waveforms for a given frequency and amplitude
- Produce tone sample (up to 10 seconds)

Features:
- Intuitive slider control, with textfield for precise value entry
- Modes allow you to run the signal continuously or for a specific duration (up to 10 seconds)
- Export file (CAF format) of generated tone up to 10 seconds
- Large oscilloscope that beautifully displays the waveforms and respond to changes in real time

## Key features

- Generate sine, square, triangle, and sawtooth waves
- Visualize waveforms in real-time oscilloscope
- Adjust frequency and amplitude
- Continuous or timed tone generation (up to 10 seconds)
- Export generated tones in CAF format

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/signal-lab/id1585573168/reviews.md

### 3/5 — quick review

*2023-07-30*

ok. elegant-looking UI style. free. basic is good.

but only runs from 100Hz to 10000Hz.

i downloaded this immediately to test my hearing above 10kHz, the numeric freq doesn't accompany the slider. it's pretty wonky. 

again love the basic, but these basics should BE there. 

BUT, i can see a GREAT utility here if it went from 20-20000Hz and ironed out the freq selection...

## Frequently asked questions about Signal Lab

### What waveforms can Signal Lab generate?

Signal Lab can generate sine waves, square waves, triangle waves, and sawtooth waves. These can be visualized in real-time on an oscilloscope.

### Can I adjust the sound parameters in Signal Lab?

Yes, you can adjust the frequency and amplitude of the generated waveforms using intuitive sliders and text fields for precise control.

### What are the use cases for Signal Lab?

Signal Lab is useful for generating tones for audio tuning, demonstrating waveforms in science classes, and producing tone samples up to 10 seconds long.

### Does Signal Lab have ads?

No, Signal Lab does not contain advertisements, offering an uninterrupted user experience.

### Can I export the generated sound from Signal Lab?

Yes, Signal Lab allows you to export generated tones in CAF format, with durations up to 10 seconds.

### What devices is Signal Lab compatible with?

Signal Lab is available for Mac and iPad devices, providing flexibility for different user setups.

### How often is Signal Lab updated?

The latest version of Signal Lab is 1.0, last updated on February 23, 2022. Further updates will depend on developer plans.

### What is the age rating for Signal Lab?

Signal Lab has an age rating of 4+, making it suitable for a wide range of users, including younger learners.

## Version history (last 1 release)

### 1.0 — 2022-02-23

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*