https://www.soundofnumbers.net/index.php/es/aplicaciones/laboratorio/apx555b-series
Sound of Numbers - APx555B Series
Software and devices for acoustic engineers
soundnumbersseries
https://www.ap.com/analyzers-accessories/apx555
APx555B Audio Analyzer: High Performance Meets Versatility
The APx555B Series Audio Analyzer is a two-channel audio analyzer, offering unmatched performance, versatile digital I/O options, and advanced audio analysis.
audio analyzerhigh performancemeetsversatility