The results of collaboration among musicologist Y.Y. Handschin and physicist V.I. Kovalenkov: foundation of an accoustic laboratory in Petrograd (1919–1921)

The article is about a joint scientific work performed by two remarkable investigators: Y.Y. Hanshin (musicologist) and V.I. Kovalenkov (physicist), a creation and activities of an acoustical laboratory in Petrograd in 1920-th, a research in the field of sound-recording, timbre of sound etc.