State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 3. Reference equivalent threshold sound pressure levels of bone vibrators for pure tones
Printing types. Type family 'Novaya gazetnaya' ( for alphabets of Russian and roman graphic bases). Range of application. Design. Base line. Characters per 4 picas
Connecting lines and engineering area in digital and analog pathes of the a sound broadcasting. Technical characteristics. Parameters of quality. Methods of measurements
