AudioAnalyser 2017.03 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus.
The most popular versions of the software 2010.1, 6.3 and 4.3. The actual developer of the free program is sedutec. The software lies within Multimedia Tools, more precisely Editors & Converters. The common filename for the program's installer is AudioAnalyser.exe.
From the developer:
AudioAnalyser is a realtime frequency analyser for audio signals.
You can combine the "AudioAnalyser" with other application like "Multisine", if your soundcard supports the full duplex mode (only very old soundcards don't). With this combination you have a full equipped audio suite for your measurements.
You may want to check out more software, such as Easy Video to MP4 Converter, Creative ALchemy X-Fi Edition or BlindWrite5, which might be related to AudioAnalyser.