TrueRTA

Free plan Windows

What TrueRTA is

TrueRTA is Windows software for testing and evaluating audio systems with a PC that has basic sound capability. Its tools include a real-time spectrum analyzer, signal generator, digital level meter, crest-factor meter, and dual-trace oscilloscope, with a maximum of two channels. The analyzer displays live input spectrum up to 48 kHz; shorter samples update more quickly, while longer samples improve low-frequency resolution. The maker describes using it to measure speaker frequency response, combine measurements into spatial averages, study noise, and analyze equipment distortion. The signal generator produces sine waves from 5 Hz to 24 kHz and pink noise. Higher product levels add a digitally generated logarithmic sweep from 10 Hz to 48 kHz. Users can add a measurement microphone, preamp, and USB interface of their choice; the app lets them select audio input and output devices. All four levels include data import and export, project files for data and notes, and color or black-and-white report printing. Level 1 is free and never expires. Paid levels are one-time purchases: Level 2 is $39.95, Level 3 is $69.95, and Level 4 is $99.95. The download page lists Windows 7, 8, or 10, in 32-bit or 64-bit, as the minimum operating system requirement.

Who it suits

TrueRTA suits Windows users evaluating audio equipment or speaker response who want analysis tools and configurable measurement hardware. Its two-channel maximum and lack of plugin support matter for users with broader requirements.

What it does well

Free Level 1 never expires
Includes spectrum analysis and an oscilloscope
Supports data import, export, and project files
Can use a microphone, preamp, and USB interface of choice
Paid levels are one-time purchases

What to know first

Maximum of two channels
No plugin support
Download page lists Windows 7, 8, or 10 as minimum
Paid levels begin at $39.95

Limits

Level 1 includes a one-octave RTA, signal generator, and oscilloscope. Finer RTA resolutions, dBu or crest-factor metering, logarithmic sweep, and white noise are provided only at higher paid levels.

Plans

Plan	Billed and limits	Price
Level 1	1 octave RTA · signal generator · oscilloscope · never expires	Free
Level 2	1/3 octave RTA · dBu metering	$39.95, paid once
Level 3	1/6 octave RTA · crest factor metering · digitally generated sweep	$69.95, paid once
Level 4	1/12 and 1/24 octave RTA · white noise source	$99.95, paid once

As trueaudio.com lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

Download TrueRTA for Windows 7, 8, or 10
Install it on a 32-bit or 64-bit Windows computer
Connect a PC sound card or chosen audio hardware
Select audio input and output devices in the application
Start with the free Level 1 plan or purchase a paid level
Enter the emailed registration code after an upgrade

Verdict

TrueRTA combines audio measurement displays with signal generation and reporting features across four levels. Check the two-channel limit and Windows requirements against your setup; Level 1 is free, while paid levels add further capabilities.

Questions

Is TrueRTA free?

Yes. Level 1 costs nothing and never expires. Paid levels begin at $39.95.

Which operating systems does TrueRTA support?

The download page lists Windows 7, 8, or 10, in 32-bit or 64-bit versions.

What does TrueRTA measure?

It can display live spectrum, measure speaker frequency response, combine measurements into a spatial average, study noise, and analyze equipment distortion.

How many channels does it support?

TrueRTA supports a maximum of two channels.

Does TrueRTA support plugins?

No. Plugin support is listed as none.

What are the paid levels?

Level 2 costs 39.95 USD once, Level 3 costs 69.95 USD once, and Level 4 costs 99.95 USD once. Each adds the measurements and signal features listed for that level.

Facts from TrueRTA's own pages

Audio analysis: The analyzer can display live input spectrum up to 48 kHz, with shorter samples for faster updates and longer samples for better low-frequency resolution. · trueaudio.com, 8 Oct 2026
Computer requirements: The download page lists Windows 7, 8 or 10, 32-bit or 64-bit, as the minimum operating system requirement. · trueaudio.com, 8 Oct 2026
Data features: The selection guide lists data import and export, project files that save data and notes, and color or black-and-white report printing across all four levels. · trueaudio.com, 8 Oct 2026
Founded: 1990 · trueaudio.com, 28 Sept 2026
Hardware: The maker says users can add a measurement microphone, preamp and USB interface of their choice to build a measurement system. · trueaudio.com, 8 Oct 2026
Headquarters: Andersonville, Tennessee, USA · trueaudio.com, 28 Sept 2026
Instruments: Its instruments include a real-time audio spectrum analyzer, low-distortion signal generator, digital level meter, crest factor meter and dual-trace oscilloscope. · trueaudio.com, 8 Oct 2026
Integration: The maker describes use with a PC sound card and says the software supports selecting audio input and output devices within the application. · trueaudio.com, 8 Oct 2026
Maker and audience: True Audio says it was founded in 1990, is located in Andersonville, Tennessee, and develops hardware and software for the audio and acoustics industry. · trueaudio.com, 8 Oct 2026
Measurements: The maker describes measuring speaker frequency response, combining speaker measurements into a spatial average, studying noise, and analyzing equipment distortion. · trueaudio.com, 8 Oct 2026
Privacy: True Audio says it gathers only customer information needed to process orders and does not sell, rent or exchange personal information or email addresses. · trueaudio.com, 8 Oct 2026
Purchase and activation: Upgrades are activated by entering emailed registration codes, and the maker says no new download is needed after an upgrade. · trueaudio.com, 8 Oct 2026
Purpose: TrueRTA is Windows software for testing and evaluating audio systems using a PC with basic sound capability. · trueaudio.com, 8 Oct 2026
Security: True Audio says it uses SSL to encrypt order information during checkout. · trueaudio.com, 8 Oct 2026
Signal generator: The signal generator produces sine waves from 5 Hz to 24 kHz and pink noise; higher product levels include a digitally generated logarithmic sweep from 10 Hz to 48 kHz. · trueaudio.com, 8 Oct 2026
Support: The maker lists email support at [email protected] and a phone number for support on weekdays from 8:00 a.m. to 3:00 p.m. Eastern Standard Time. · trueaudio.com, 8 Oct 2026

Where TrueRTA stands on Freedom251

Audio Analysis Software#24 of 43