  Estimation of perceptual quality in audio and speech is possible using a
variety of methods. The combined v3 release of ViSQOL and ViSQOLAudio (for
speech and audio, respectively,) provides improvements upon previous versions,
in terms of both design and usage. As an open source C++ library or binary with
permissive licensing, ViSQOL can now be deployed beyond the research context
into production usage. The feedback from internal production teams at Google
has helped to improve this new release, and serves to show cases where it is
most applicable, as well as to highlight limitations. The new model is
benchmarked against real-world data for evaluation purposes. The trends and
direction of future work is discussed.
