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2. PicoScope (software) - Wikipedia

   en.wikipedia.org/wiki/PicoScope_(software)

   [1] [5] PicoScope software enables analysis using FFT, a spectrum analyser, voltage-based triggers, and the ability to save/load waveforms to disk. [1] [5] PicoScope is compatible with parallel port oscilloscopes and the newer USB oscilloscopes. The software has been described as "very good for laptops" and can be used with desktop or laptop ...

3. Comparison of free software for audio - Wikipedia

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

   Advanced Linux Sound Architecture (ALSA) Yes the sound card driver and management system in the Linux kernel: GPL-2.0-or-later LGPL-2.1-or-later: aRts: Yes an audio programming API and sound server for general desktop, no longer in development GPL: DSSI: Yes a plugin architecture for software synthesizers: LGPL-2.1-or-later: GStreamer: Yes Yes ...

4. 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 .

5. 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.

6. Smaart - Wikipedia

   en.wikipedia.org/wiki/Smaart

   Although pink noise is a traditional choice for test signal, [3] Smaart is a source-independent analyzer, which means that it does not rely on a specific test signal to produce measurement data. Pink noise is still in common usage because its energy distribution allows for quick measurement acquisition, but music or another broadband test ...

7. Sonic Visualiser - Wikipedia

   en.wikipedia.org/wiki/Sonic_Visualiser

   Screenshot of the spectrum of the refrain of a pop song (precisely "Più bella cosa" by Eros Ramazzotti): basses, drums and artist's voice can clearly be identified. Sonic visualiser melodic range spectrogram example. Sonic Visualiser represents acoustic features of the audio file either as a waveform or as a spectrogram. [4]

8. Noise spectral density - Wikipedia

   en.wikipedia.org/wiki/Noise_spectral_density

   For thermal noise, its spectral density is given by N 0 = kT, where k is the Boltzmann constant in joules per kelvin (J/K), and T is the receiver system noise temperature in kelvins. The noise amplitude spectral density is the square root of the noise power spectral density, and is given in units such as volts per square root of hertz, V / H z ...

9. Noise-figure meter - Wikipedia

   en.wikipedia.org/wiki/Noise-figure_meter

   A noise-figure meter could automate that procedure as follows: A gated broadband noise source (such as an avalanche diode) drives the device under test. A measurement is made with the noise source on; another measurement with the noise source off. From those measurements and the characteristics of the noise source, the noise figure can be ...