Если вы пытались найти рентабельное решение для спектрального анализа аудио, то вы попали в нужное место. SpectraPLUS позволяет производить сложный анализ звукового сигнала без использования каких-либо других аппаратных средств, кроме вашей Windows-совместимой звуковой карты.





SpectraPLUS - Audio Spectrum Analyzer

If you have been searching for an extremely powerful yet cost effective solution to audio spectrum analysis then you have found the right place. SpectraPLUS allows you to perform complex audio signal analysis without the use of any other hardware other than your Windows compatible sound card.

We are proud to offer SpectraPLUS version 5.0! It combines all the features of the previous versions of SpectraPLUS as well as all of the advanced features of SpectraPRO and SpectraLAB - if you own any of these products (regardless of where purchased) you are eligible for upgrade pricing.

Key Features
Real-time FFT analysis of live input
Record, Playback and Post Process WAV files
Displays: Time Series, Spectrum, Spectrogram, 3-D Surface, Phase
Full Featured Dual Channel Signal Generator
High Resolution FFT Analysis up to 1,048,576 pts
Octave Analysis from 1/1 to 1/96
24 bit precision, sampling rates to 200kHz and above (sound card dependent)
Digital Filtering, Distortion Analysis, Transfer Functions
Acoustic Tools: RT60, Leq, Delay Finder
Automation Tools: Macro, DDE, Data Logging
NEW (Feb 2008)! - THD+N versus Frequency utility

Screenshots

The screenshot below is of the main application window. All the frequently used menu commands are now available on the toolbar for quick access. Test configuration files can be loaded directly from the toolbar and multiple plots can be viewed simultaneously - it exceptionally easy to use.



The screenshot below is of the Spectrum Display. This display is the workhorse of the analyzer and we have highly optimized its performance for quick updates and made it exceptionally easy to use. The example below shows several "overlays" where previous measurements have been saved and displayed together with the current spectrum. In addition, a differential cursor measurement are shown. You have complete control over scaling and labeling for all axis. The overlays can be saved and recalled from disk and labeled to meet your needs. This display is very fast - download the program and try it yourself!



The screenshot below shows the Time Series display. Editing is supported in the Recording or Post Processing modes and full cursor measurements are provided.



The screenshot below is of the Spectrogram display. This display shows the spectrum versus time with the amplitude shown in color. You can select the color gradient, scroll direction and many other parameters. Cursor measurements are supported on all axis. This display is one of the finest spectrograms available for the PC.



The screenshot below is of a 3-D Surface plot which shows a perspective view of the spectrum versus time.



The screenshot below is of the THD+N versus Frequency utility. This measures and plots the distortion over a range of frequencies.



homepage: http://www.spectraplus.com/index.html