|True Audio's Press Release Page|
|Andersonville, TN, February 14, 2002: True Audio announces the release of TrueRTA the first of their new line of audio measurement software for PCs running Windows. Hiding behind TrueRTA's friendly face is an army of powerful digital signal processing (DSP) routines that transform your desktop or notebook PC into an easy to use Real Time Analyzer (RTA). RTAs are specialized spectrum analyzers widely used by audio engineers to provide a visual display of the frequency content of audio signals ranging from test tones to live musical performances. It is becoming more common to see RTAs in use by musicians, do-it-yourself speaker builders and home audio enthusiasts. While spectrum analyzers have become a standard component of every audio engineer's toolbox, traditional bench-top or hand-held real time analyzers continue to cost a small fortune. Now, with the release of TrueRTA, everyone with a PC and an interest in audio can explore the sonic world around them and see firsthand the spectral nuances of their favorite music. TrueRTA also includes a Signal Generator, Oscilloscope and several Digital Metering functions making it a complete audio test set capable of replacing a number of traditional test instruments. The Level 1 version is FREE and can be downloaded at www.trueaudio.com. No special hardware is required.
TrueRTA operates at four performance levels. Level 1 is FREE! Pricing for higher levels is quite modest and is based on the RTA resolution although the higher levels also add further features. The free Level 1 provides a one-octave real time analyzer with fully adjustable frequency and dB limits and also includes a sine wave generator, pink noise source, true rms voltmeter and oscilloscope. Everyone is encouraged to download the basic free version. At just $39.95, TrueRTA Level 2 ups the RTA resolution to 1/3rd octave and adds dBu metering. Level 3, at $69.95, provides a 1/6th octave RTA and further adds crest factor metering and a powerful digitally generated sweep for very precise frequency response measurements. The Level 4 product is highly affordable at $99.95 and features 1/12th and 1/24th octave RTAs while adding a white noise source to all the features mentioned above.
Unlike programs that torture you with an array of tiny windows scattered about the desktop, TrueRTA is fully contained in a single integrated user environment. Switch between the RTA and the Oscilloscope using the toolbar buttons and the environment automatically reconfigures itself for that instrument. Friendly features like the toolbar button that moves the grid in front or behind the data and the use of the space bar to start and stop the analyzer make the software very easy to use. It even remembers your settings from session to session. The informative User's Guide is provided in the form of an online help system with instructions on performing a number of basic audio measurements. There is even an application note detailing how to perform a self-test of your PC sound system. The FAQs include recommendations for inexpensive measurement microphones and mic preamps that can be used with TrueRTA to establish a low cost but high performance audio measurement system for around $200.
The RTA can be fully controlled via menu selections but the analyzer's dialog bar located at the right side of the screen is the normal way to control functions such as resolution, frequency limits (adjustable from 10 Hz to 22 kHz), amplitude limits (from +20 to -160 dBu), channel selection (L, R, L + R or L - R), averaging and speed tradeoff. The unique Speed Tradeoff feature provides three settings that allow you to trade low frequency precision for a faster screen update rate. You can specify any number of averages to be used for the analyzer display. This is especially useful when making pink noise measurements where you can average, say, 1000 frames in order to provide a much smoother measured response than a single frame can provide. Averaging can also be used to dig low-level signals out of the noise. The higher-level versions of TrueRTA also offer a short digital sweep (sometimes called a "chirp") as the stimulus for the system under test. Using the sweep with Peak Hold engaged allows the measurement of a very precise frequency response with just a single sweep. Input and Output Level calibration routines are provided so that you can use your PC as a precision signal source with the capability of performing very accurate audio measurements.
The Signal Generator dialog bar is located at the left side of the screen. Below the Start/Stop button and associated LED type indicator are fields for entering the sine wave frequency and amplitude as well as buttons for selecting the waveform. The frequency for the low distortion sine wave generator can be entered in decimal frequencies such as 32.125 Hz providing very fine resolution in the low frequency range where other generators limit you to whole numbers like 32 or 33 Hz.
When you switch to Oscilloscope mode the analyzer dialog bar changes to an oscilloscope dialog bar with all the appropriate controls for a dual trace oscilloscope. The time-base ranges from .05 ms/Div up to 200 ms/Div while the amplitude settings range from .001 V/Div to 1 V/Div. Triggering is selectable between left and right channels. The input can be specified as L, R, L and R, L + R or L - R.
The digital Metering functions include a true RMS voltmeter, dBu meter, crest factor in voltage ratio, and crest factor in dB. Crest factor is the ratio of a signal's peak voltage to its RMS voltage and is an indication of the dynamics of a musical signal.
The minimum requirements to run TrueRTA are a 500 MHz or better PC with at least 64MB RAM and a full duplex 16 bit sound system running Windows 98 or later. PCs faster than 500 MHz will provide faster updates for the RTA display. While reasonable performance can be obtained with a 500 MHz PC, a 2 GHz or faster Pentium IV machine is definitely recommended. A CPU Speed setting allows you to optimize performance for the speed of your computer. Input and output sampling rates are adjustable up to 96kHz to accommodate the widest possible range of sound cards.
When you upgrade just enter the registration code you receive and performance will be stepped up to the higher level. There is no need to download the file again. Intermediate level upgrades are also available. This makes it possible to purchase the product over the Internet and be up and running the same day. You can learn more about the product and download TrueRTA at www.trueaudio.com. Or contact True Audio at 865-494-3388, 387 Duncan Lane, Andersonville, TN 37705 USA.
Note to Editors: Please feel free to use any graphics from the True Audio web site to support this new product announcement.
Contact: Sharon Alsup
Company Info: True Audio
387 Duncan Lane
Andersonville, TN 37705-3515
|Andersonville, TN, JULY, 2001: True Audio, software developer
and publisher, has moved all operations from Escondido California where
the business was founded in 1990 to the shores of Norris Lake in eastern
Tennessee. Please note their new address and phone numbers:
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