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2. Real-time analyzer - Wikipedia

   en.wikipedia.org/wiki/Real-time_analyzer

   A real-time analyzer (RTA) is a professional audio device that measures and displays the frequency spectrum of an audio signal; a spectrum analyzer that works in real time. An RTA can range from a small PDA -sized device to a rack-mounted hardware unit to software running on a laptop .

3. Smaart - Wikipedia

   en.wikipedia.org/wiki/Smaart

   Smaart running as a spectrum analyzer, in spectrograph view. In spectrograph view, Smaart displays a real-time spectrum analysis, showing the relative strength of audio frequencies for one audio signal. Needing only one channel of audio input, this capability can be used for a variety of purposes.

4. Spectrum analyzer - Wikipedia

   en.wikipedia.org/wiki/Spectrum_analyzer

   A spectrum analyzer is also used to determine, by direct observation, the bandwidth of a digital or analog signal. A spectrum analyzer interface is a device that connects to a wireless receiver or a personal computer to allow visual detection and analysis of electromagnetic signals over a defined band of frequencies.

5. Comparison of free software for audio - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_free...

   JACK Audio Connection Kit (JACK) JACK Team, Paul Davis: Yes Yes (JACK OS X) Yes (jackdmp) a sound server for integration of general and low-latency pro audio applications, including timebase transport GPL-2.0-or-later LGPL-2.1-or-later: Linux Audio Developers Simple Plugin API (LADSPA) Yes a plugin architecture for digital signal processing ...

6. Spectral density - Wikipedia

   en.wikipedia.org/wiki/Spectral_density

   Electronic instruments called spectrum analyzers are used to observe and measure the power spectra of signals. The spectrum analyzer measures the magnitude of the short-time Fourier transform (STFT) of an input signal. If the signal being analyzed can be considered a stationary process, the STFT is a good smoothed estimate of its power spectral ...

7. Audio analyzer - Wikipedia

   en.wikipedia.org/wiki/Audio_Analyzer

   An audio analyzer is a test and measurement instrument used to objectively quantify the audio performance of electronic and electro-acoustical devices. Audio quality metrics cover a wide variety of parameters, including level, gain, noise, harmonic and intermodulation distortion, frequency response, relative phase of signals, interchannel crosstalk, and more.