Tag Archives: loopback

MeasureLab ~ Audio Measurement Suite

Posted by tom2tec on

A collection of DIY audio measurement and analysis tools, grown organically as needed. This software is compatible with standard audio devices.

PyQt6 desktop app bundling 28+ DIY modules: signal generator, spectrum/PSD analyzer, sound level & LUFS meters, loopback finder, distortion/IMD tools, network/impedance analyzers, oscilloscope, spectrogram, ultrasound modulator, transient analyzer, lock-in/FRA, inverse filter, frequency counter, recorder/player, sound quality analyzer, noise profiler, boxcar averager, goniometer, BNIM meter (ITD/ILD neural map), HRTF Player, and more.

Built for hobbyists and engineers: device routing, calibration (input/output/SPL), multi-language UI, light/dark themes.

github.com/youtube-at-vach/MeasureLab
youtube-at-vach.github.io/MeasureLab

Multitone Analyzer ~ Loopback Analysis For Audio

Posted by tom2tec on

Multitone Analyzer is an app designed to explore audio electronics performance by producing quick measurements using a simple loop-back configuration. MA produces a specific set of test tones that are sent to a digital-to-analog converter (DAC) that are then passed through one or more analog components and then received by MA and analyzed. MA both, plays the signals and records them for analysis. DAC and ADC are required for this to work.

  • Measurements that MA can produce: TD+N, IMD, N+D, delay, clock drift, frequency response, etc.
  • Audio support for WASAPI, ASIO, and Direct Audio devices with sampling rates of up to 384kHz/32 bits
  • Test signals: arbitrarily large multi-tone signal, simple sine waves, two-tone IMD test signals, 3-tone IMD test signals, square wave, triangle wave
  • FFT sizes of up to 1M
  • For distortion measurements a range of frequencies to measure can be selected
distortaudio.org/multitone