Russian voice interface

In the paper, we describe a system SIRIUS for recognition of continuous Russian speech, which is developed in the group of speech informatics of SPIIRAS. The specific feature of this system is that the language and speech are represented on morphemic level. This allows one to significantly reduce the size of lexically recognizable dictionary and increase the processing rate. We describe the process of introduction of the Russian speech recognition system into the area of infotelecommunications for voice access to the Internet-version of the electronic catalogue “Yellow Pages of Saint Petersburg” with the purpose of creation of an automated call-center for answering subscriber’s calls. In the paper, we demonstrate the results of testing the system work with speech samples recorded both in offices and in conditions of phone conversations. Ronzhin Andrey Leonidovich. Born 1976. Graduated from the St. Petersburg State University of Aerospace Instrumentation. Since 1999 works at the St. Petersburg Institute of Informatics and Automation, Russian Academy of Sciences, as a Senior Researcher. Received candidate’s degree in 2003. Scientific interests: speech recognition. Author of 26 publications. Karpov Aleksey Anatol’evich. Born 1978. Graduated from the St. Petersburg State University of Aerospace Instrumentation. Since 2002 works at the St. Petersburg Institute of Informatics and Automation, Russian Academy of Sciences, as a Junior Researcher. Scientific interests: speech recognition. Author of 20 publications.     

Quantum digital alternating-voltage synthesizers. The present state and future prospects

The particular features of the synthesis of an alternating current based on the Josephson effect are considered, and diagrams of the phase locking zones are presented which enable the operation of quantum digital voltage synthesizers to be clearly explained. Specific methods for constructing them are described and the requirements imposed on the bias source of Josephson integrated circuits are formulated.Translated from Izmeritelnaya Tekhnika, No. 1, pp. 55–62, January, 2005.