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Sound & Audio Measurement - Audio Distortion Analyzer
https://troutunderground.com/Sound-Audio-Measurement-Audio-Distortion-Analyzer/
The HP 8903A is an audio analyzer capable of measurements in the 20 Hz to 100 kHz range. The A version of the 8903 has a low distortion internal oscillator making the 8903A a complete analyzer set. This analyzer can measure distortion. SINAD, signal to noise ratio, AC and DC level, frequency and is HP-IB capable.
Distortion Measurement with Soundcard and ARTA software ...
https://www.diyaudio.com/community/threads/distortion-measurement-with-soundcard-and-arta-software.312216/
While I do have access to Audio Precision test equipment, many times it's much more convenient to do a sound-card based distortion measurement. Here's a link to a youtube I made that shows an overview of how to do it, along with a schematic for a nice attenuator and limiter that you'll need to use on the input of the soundcard to make power ...
YMEC software - THD (Total Harmonic Distortion) analyzer ...
http://ymec.com/hp/signal2/thd.htm
Total Harmonic Distortion (THD) analyzer. Total harmonic distortion (THD) is one of the most common and important specification in the audio measurement, which is used to describe the ability of the device to accurately reproduce an input signal at its output. Audio signals suffer some distortion when they pass through electronic circuits.
ARTA Software
ARTA software uses standard and professional PC sound cards for audio signal acquisition and generation. You can read ARTA as; Audio Real Time Analysis. ARTA software contains three programs: ARTA.EXE - program for the impulse response measurement, real-time spectrum analysis and frequency response measurements.
REW - Room EQ Wizard Room Acoustics Software
http://www.roomeqwizard.com/
Room Acoustics Software. REW is free software for room acoustic measurement, loudspeaker measurement and audio device measurement. The audio measurement and analysis features of REW help you optimise the acoustics of your listening room, studio or home theater and find the best locations for your speakers, subwoofers and listening position.
TrueRTA Audio Spectrum Analyzer Software
https://www.trueaudio.com/rta_abt1.htm
TrueRTA 's audio spectrum analyzer software shows you a detailed picture of what you're hearing in real-time, that is, as it happens. You can create your own professional measurement system starting with TrueRTA software on your PC. Then add the measurement microphone, preamp and USB interface of your choice.
AUDio MEasurement System download | SourceForge.net
https://sourceforge.net/projects/audmes/
Download AUDio MEasurement System for free. PC based Oscilloscope and Spectrum analyzer using sound card. 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.
DISTORTION MEASUREMENT IN AUDIO AMPLIFIERS
https://renardson-audio.com/distortiontest.pdf
DISTORTION MEASUREMENT IN AUDIO AMPLIFIERS. By Michael Renardson. SUMMARY The requirements for the measurement of non-linear distortion in audio power amplifiers are examined. The limitations of conventional measurement methods are discussed and several improved test methods described in which complex test signals could be used.
Total Harmonic Distortion | Universal Audio
https://www.uaudio.com/blog/total-harmonic-distortion/
THD stands for Total Harmonic Distortion and can be used to estimate the degree to which a system is nonlinear. A THD measurement can be made by applying a sine wave as an input to a system, and measuring the total energy which appears at the output of the system at harmonics of the input frequency. A sinusoidal input is used because sinusoids ...
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