The aim of this book is to honor the multidisciplinary work of Doz. Dr. Sylvia Moosmüller in the field of acoustic phonetics. The essays in this volume range from sociophonetics, language diagnostics, dialectology, to language technology. They thus exemplify the breadth of acoustic phonetics, which has been shaped by influences from the humanities and technical sciences since its beginnings. In the first article of the volume, Barbara Soukup gives an overview of empirical research on language attitudes in Austria. Ralf Vollmann then deals with the difference between standard language and dialect from a sociophonological perspective. Brigitte Eisenwort and her co-authors dedicate themselves to the relation between growing up multilingually and language development disorders and pay tribute to Sylvia Moosmüller's research on language variation in the context of the clinical practice of language diagnostics. Michael Pucher and Sylvia Moosmüller show how an interpolation of acoustic models of standard language and dialect from speech synthesis can be subjected to a fruitful acoustic phonetic analysis. Felicitas Kleber and co-authors investigate the validity of Pfalz Law in two Viennese varieties. In the work of Michaela Rausch-Supola and co-authors, in which Sylvia Moosmüller was also involved, the spread of the Viennese velarized lateral is examined by comparing Vienna and Neunkirchen. The final contribution by Friedrich Neubarth deals with possible orthographic transcriptions of the Viennese dialect for use in machine translation.