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(US Dollars)	$74.95

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DesktopRTA is a real-time sound analyser for your PC with many features only found in much more expensive sound analysis software. DesktopRTA provides accurate graphical feedback suitable for amateur hi-fi enthusiasts, A/V engineers / installers and electricians.

DesktopRTA samples sounds from the input of your PC's sound card and then applies a Fourier Transformation to the samples to obtain a frequency spectrum. The result is an accurate representation of the sampled sound broken down into its frequency components.

This version is a complete full screen PC version of our very successful PocketRTA program.

Manual [HLP] DesktopRTA

Key Features:

44Khz sampling allowing signals up to 22Khz to be measured

Full screen dual channel FFT display

Definable FFT size and sample frequency (Up to 32K samples)

Single channel spectrograph

Standard ANSI / IEC A and C weighting curves

Automatic noise cancellation

Automatic peak note / frequency and octave display

Narrow band Linear and Logarithmic scalable displays

Octave, 1/3 octave, 1/6 octave and 1/12 octave displays

Transfer Mode for comparing amplitude and phase response

SPL (Sound Pressure Level) display

250x zoom for accurate analysis of narrow band data

Internal Signal Generator

Touch screen plotting of nearest point with frequency and decibel readout

Up to 64x averaging and smoothing to help stabilize the display

Peak trace facility for better reading of fluctuating frequencies

Selectable signal decay speeds

Selectable signal gain control

Pause facility freezes the live trace to aid analysis of data

Trace capture facility

ASCII Export of FFT's (Left and Right channels plus traces)

Selectable Input channel

Linear and Logarithmic Displays DesktopRTA allows display of both Logarithmic and Linear frequency response. The right-hand screenshot shows the ability to display two simultaneous traces, one for the left channel and one for the right channel of the input signal. This is useful for monitoring stereo signals or if you want to compare input data against a known test signal.
The Transfer and Phase Display The phase display can be used in conjunction with the transfer display and shows the phase shift, or time difference in the measurement signal relative to the reference signal for each frequency.
Spectrograph Display A Spectrograph is a 3D representation of frequency/amplitude over time often used for analysing speech. The diagram below shows the display when a multi frequency sweep is applied to the input.
Octave and Sub Octave Display Modes These modes are similar to those found on a conventional spectrum analyser. This display breaks the frequency spectrum into ISO standard spaced bands.
Multi Trace DesktopRTA has the ability to capture and display up to 3 static traces for use with comparing input signals. Traces can be exported to SDF format for use in other PC applications.