I can provide step-by-step instructions for the best free software for your specific project.
NAK T-100 - Download and install on Windows - Microsoft Store nak t100 audio analyzer download
A: For azimuth (phase) and level, no. For wow & flutter measurement, yes — you need a sound card with very low clock jitter. The Behringer UCA202 is a popular cheap option. I can provide step-by-step instructions for the best
The Ultimate Guide to the Nakamichi T-100 Audio Analyzer: Features, Legacy, and Digital Alternatives no. For wow & flutter measurement