SigJenny for Windows

Name: SigJenny
Rating: 2.4 (5 reviews)
Author: NaTCH Engineering

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Editors’ Review

Download.com staffFebruary 26, 2026

SigJenny transforms your PC into a capable signal generator, offering diverse waveshapes, sweep capabilities, and tone bursts. It's a free tool for audio testing and generation.

Pros
- Generates numerous different waveshapes
- Supports frequency sweeps and tone bursts
- Graphical display of generated waves
- Can display microphone input
- Output frequency specifiable as musical pitch
Cons
No Cons available

SigJenny for Windows

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Used SigJenny for Windows?

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Full Specifications

GENERAL

Release: August 16, 2004

Latest update: February 26, 2026

Version: 0.989

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 98
Windows ME
Windows XP
Windows 10
Windows NT
Windows 95
Windows 2000

Additional Requirements: Windows 95/98/Me/NT/2000/XP

POPULARITY

Total Downloads: 32,573

Downloads Last Week: 3

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Last Updated

User Reviews

2.4/5

5 User Votes

CONTAINS A VIRUS!
xManitouxDecember 11, 2012
Pros
None as program loads but doesn't function.
Cons
Installs the Incredibar Toolbar virus.
Summary
Home page will change to mystart.com. Also program doesn't work. Requires a 'wave input device" which is assumed was a microphone but to no avail. I thought cnet was safe!
does not work in vista
thedragonmasterJanuary 2, 2012
Pros
none didnt work
Cons
does not work in windows vista, even under compatibility mode.
Summary
Didnt work on duo core 64 bit windows 7
pegs1February 28, 2011
Pros
none it didin't work
Cons
didn't work
Summary
Simple and reliable.
egillmanMarch 23, 2005
Pros
SigJenny is a simple-to-use frequency generator that uses your computer's sound card to create waveforms of any audio frequency. Combine it with Winscope, and you have your own electrical engineering test bench on your PC!
Cons
I'm not sure what the "line" and "mic" controls are for. There is not much documentation.
Summary
December 13, 2004
Pros
Cons
Summary

Developer’s Description

By NaTCH Engineering

Make your PC generate various sound waves.

SigJenny turns your PC into a flexible and powerful signal generator for free! It generates numerous different waveshapes, can sweep them or arrange them as tone bursts, graphically display them, and do a very good impression of a police car. The output can be a single frequency or swept, or a single or repeating tone burst. The input from a microphone can be shown and the output frequency can be specified as musical pitch.

SigJenny for Windows

Editors’ Review

Pros

Cons

SigJenny for Windows

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User Reviews

CONTAINS A VIRUS!

does not work in vista

Didnt work on duo core 64 bit windows 7

Simple and reliable.

Developer’s Description