TY CONF TI METHODS FOR FORMING ENERGY-EFFICIENT FEATURE DESCRIPTIONS OF ACOUSTIC-VIBRATION SIGNALS BASED ON HARDWARE PREPROCESSING IN TINY MACHINE LEARNING SYSTEMS KW tiny machine learning (TinyML) KW energy efficiency KW acoustic-vibration signals KW hardware preprocessing KW neural network quantization KW microcontrollers KW feature extraction KW register-transfer level (RTL) JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Lemza, S.A. AU Denisova, O.A. AU Smerek, V.A. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov