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AUDio MEasurement System download | SourceForge.net
https://sourceforge.net/projects/audmes/
AUDio MEasurement System - multi-platfrom system for audio measurement through sound card in the PC. Incorporates generator, oscilloscope, audio spectrum analyzer (FFT) and frequency sweep characteristic. Now it can be compiled and works under Linux, Windows and MacOS. Features Display audio spectrum (FFT) Show wave form Generate tones
Audio Interface Suitable for Measurements | Audio …
https://www.audiosciencereview.com/forum/index.php?threads/audio-interface-suitable-for-measurements.7536/
When my Lexicon measuring interface failed, I bought a UMC 202HD but returned it as being unusable for measurements due to excessive distortion. I thought it might just be a faulty unit, so bought another, the 204 HD this time, but with identical results.
Choosing A PC Audio Interface: The SOS Guide
https://www.soundonsound.com/techniques/choosing-pc-audio-interface-sos-guide
The audio interface dynamic range measurement therefore measures the background noise level in the permanent presence of a low-level signal (generally a 1kHz sine wave at -60dBFS), which is subsequently notched out using a filter. Dynamic range is …
Using Sound Cards for Audio Measurement - Audio Precision
https://www.ap.com/blog/using-sound-cards-for-audio-measurement/
In short, while the APx555 has a self-noise 50 dB lower than the ASIO audio interface, the audio interface is still more than 30 dB quieter than the acoustic background noise. This provides more than enough headroom to make measurements on the speaker in question. AP was founded five years before the first personal computer sound card was shipped.
A DIY approach to distortion measurements for audio ...
https://enjon.uk/2019/09/01/a-diy-approach-to-distortion-measurements-for-audio-amplifiers/
You can perform a ‘loopback’ test to measure the harmonic distortion of your own audio interface by connecting an RCA cable between the output and input and using REW to generate a 1kHz tone (use the generator icon on the main window). It is worth calibrating your device in the soundcard preferences panel before commencing testing.
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