True Audio: Audio Spectrum Analyzer and Loudspeaker Design Software

Updated: Wednesday, 24 April 2013

True Audio Home Page

True Audio publishes the software applications TrueRTA and WinSpeakerz and the book Introduction to Loudspeaker Design. Click on the Selection Guide below to find your product. Scroll down to review our suggested systems!

About TrueRTA TrueRTA Selection Guide TrueRTA FAQs TrueRTA Support TrueRTA Downloads

Create your own professional measurement system starting with TrueRTA software on your pc. Then add the measurement microphone, preamp and USB interface of your choice. The TrueRTA setup you choose is virtually unlimited for field measurement work because you can select your own professional grade microphone cable. This allows you to take measurements from any distance.

All-in-one measurement systems do offer simplicity but they also lock you into a fixed system with no upgrade paths.

"While lots of audio measurement software applications exist for the PC, the one that seems to have captured the hearts of engineers and enthusiasts is TrueRTA, available at trueaudio.com. Most speaker engineers I know keep a copy on their computers." - Brent Butterworth, Sound and Vision Magazine, Jan 2011

Read the entire article here.

TrueRTA is currently at version 3.5.4:

Click here for your FREE Upgrade!

Screenshot of Spectrum Analyzer in Bar Mode - Level 4

Here are some complete measurement systems we recommend in 3 price ranges. All are upgradable!
Please Note: True Audio only sells the software for these systems. The hardware must be purchased elsewhere.

Recommended Audio Measurement Systems for use with TrueRTA
	System 1 Basic		System 2 Standard		System 3 Advanced
	1/3rd Octave RTA Great for Car Audio Pink Noise Upgradable		1/6th Octave RTA Acoustic Measurements Electronic Measurements Quick Sweep Upgradable		1/24th Octave RTA Acoustic Measurements Electronic Measurements Quick Sweep Upgradable
TrueRTA Measurement Software	TrueRTA Level 2 Buy Now from True Audio	$39.95	TrueRTA Level 3 Buy Now from True Audio	$69.95	TrueRTA Level 4 Buy Now from True Audio	$99.95
Professional Measurement Microphone (Calibrated) (Purchase at Parts Express)	Dayton EMM-6 (PE)	$49.00	Dayton EMM-6 (PE)	$49.00	Dayton EMM-6 (PE)	$49.00
15 foot Professional Microphone Cable (use other lengths or in multiples for long runs) (Purchase at Parts Express)	Pro Co15' (PE)	$9.98	Pro Co15' (PE)	$9.98	Pro Co15' (PE)	$9.98
USB Audio Interface (Purchase at Amazon)	MXL Mic Mate (Amazon)	$40.00	Behringer Xenyx 302USB(Amazon)	$49.99	Tascam US122 MKII (Amazon)	$79.99
Your Windows PC
Approximate Complete System Cost		$138.93		$178.92		$238.92

Click Here for a list of hardware recommended for use with TrueRTA

Click Here to download the FREE TrueRTA Level 1
Level 1 NEVER EXPIRES! Vista and Windows 7 Compatible!

Click Here to learn more about TrueRTA!

Read about TrueRTA Level 4 from
Acoustic Software Reviews

Questions about Sound Cards, Mics or Calibration?
Click here: TrueRTA FAQs

How to Use TrueRTA
at the

Audio Forum!

NEW v 3.5 for Windows 7
The new version is fully compatible with Windows 7 and now allows selection of audio devices from within the software.

New to Real Time Analyzers? Click below to go to the Audio Visual Science Forum

Read the .pdf Affordable Audio Review:

WinSpeakerz Loudspeaker Design Software "The Speaker Design Toolbox"

About WinSpeakerz

WinSpeakerz Support

WinSpeakerz_Demo

WinSpeakerz Drivers

You can use our friendly software to build great sounding loudspeakers that you might pay hundreds or even thousands of dollars for at an audio salon! Windows 7 compatible.

New Low Price! Now Only $39.95!

Click here to learn more!
Click here to download the WinSpeakerz Free Demo - Never Expires! (Windows 7 compatible)

Click here to explore John Murphy's Corner-Line-Array...An Open DIY Project!

Introduction to Loudspeaker Design by John L. Murphy

"I highly recommend this book to anyone entering the difficult but rewarding, area of speaker design. I found it a pleasure to read."

"I cannot imagine a better 'Introduction to Loudspeaker Design' than this book"

from Dennis Colin's review in Speaker Builder magazine...click here to read the complete review

Introduction to Loudspeaker Design' is written for hobbyists, students, technicians and engineers seeking an overview of the technology of loudspeakers. Starting with a brief history of audio developments the book begins by introducing the concepts of frequency, pitch and loudness and proceeds to develop the idea of a loudspeaker as a system.

The book covers such topics as loudspeaker design tradeoffs, spatial loading, diffraction loss, cavity effect and enclosure construction. A complete chapter is devoted to the subject of crossover design. The appendices contain technical references, design aids and a chart depicting 18 different loudspeaker enclosure types.

Chapter Headings include:

Audio Basics
Loudspeaker Basics
Advanced Loudspeaker Topics
Enclosure Design & Construction
Crossover Design
Driver Parameter Measurement
Frequently Asked Questions

Click here to learn more!
Click here to order!

Audio Books

Free Demos

Audio Topics

From True Audio

'Introduction to Loudspeaker Design"
by John L Murphy

The book for hobbyists, technicians, and engineers seeking an overview of the technology of loudspeakers.

The perfect companion to our speaker design software!

Only
$24.95!

	Order ILD Now!
	Read the full book review
	Read About ILD!

True Audio, in Association with

Invites You to Visit
The Audio Engineering Bookstore

Lancaster's Active Filter Cookbook
by Don Lancaster

Loudspeaker Design Cookbook
by Vance Dickason

to the Bookstore

Download our Real Time Analyzer!
	TrueRTA Level 1 for Windows XP, Vista and Windows 7

Download a Demo of our software and see for yourself what loudspeaker design is all about!

	Get the WinSpeakerz demo and Demo Manual! for Windows XP, Vista and Windows 7

More Free Stuff


	Download a Box Chart for Windows
	Download a Baffle Reaction Radiation Spreadsheet
	Download a SPL to % Efficiency Conversion Chart
	Download a Linkwitz Transform Circuit Design Spreadsheet

	Murphy on Tubes vs. Solid-State
	Echo, Reverb and Time Delay Effects
	John Murphy's Posts on Audio Topics

Speaker Topics

	Overview of Crossovers
	Overview of Crossovers-II
	Linkwitz-Riley Crossovers
	Neutralizing L(e) with a Zobel
	Design a Linkwitz Transform Circuit

Audio Links

	Organizations
	Speaker Driver Manufacturers
	Speaker Component Sources
	Speaker System Manufacturers
	Speaker Suppliers
	Speaker Reconing
	Audio Search Engines
	Other Audio Sites
	Woodworking Sites

DIY Audio Projects

Murphy-Corner-Line-Array

Catalog

Reviews

Customer Comments

Meet John Murphy!

	Windows software
	Book - ILD
	Amazon Book Store

	Speaker Builder reviews Introduction to Loudspeaker Design
	Secrets of Home Theater and High Fidelity reviews WinSpeakerz
	Voice Coil Magazine on WinSpeakerz

"I use WinSpeakerz frequently. It's extremely easy to use, fast, accurate and helpful. It provides a quick way of trying many "what if" scenarios. Any speaker designer from beginner to pro will find WinSpeakerz to offer exceptional value. Highly recommended!"

Mike Dzurko,
President,
Audio Concepts Inc.