DesktopRTA

DesktopRTA application 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 PCs 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.
Here are some key features of "DesktopRTA":
ï¿­ 44Khz sampling allowing signals up to 22Khz to be measured
ï¿­ Full screen dual channel FFT display
ï¿­ Definable FFT size and sample frequency (Up to 32K samples)
ï¿­ Single channel spectrograph
ï¿­ Standard ANSI / IEC A and C weighting curves
ï¿­ Automatic noise cancellation
ï¿­ Automatic peak note / frequency and octave display
ï¿­ Narrow band Linear and Logarithmic scalable displays
ï¿­ Octave, 1/3 octave, 1/6 octave and 1/12 octave displays
ï¿­ Transfer Mode for comparing amplitude and phase response
ï¿­ SPL (Sound Pressure Level) display
ï¿­ 250x zoom for accurate analysis of narrow band data
ï¿­ Internal Signal Generator
ï¿­ Touch screen plotting of nearest point with frequency and decibel readout
ï¿­ Up to 64x averaging and smoothing to help stabilize the display
ï¿­ Peak trace facility for better reading of fluctuating frequencies
ï¿­ Selectable signal decay speeds
ï¿­ Selectable signal gain control
ï¿­ Pause facility freezes the live trace to aid analysis of data
ï¿­ Trace capture facility
ï¿­ ASCII Export of FFTs (Left and Right channels plus traces)
ï¿­ Selectable Input channel
Limitations:
ï¿­ time limited