| 摘要 |
FIELD: physics; communication. ^ SUBSTANCE: invention relates to communication engineering and can be used when recording and playing back monophonic sound broadcast signals, as well as during transmission over communication lines. A method and a device for realising said method are proposed, which provide non-inertia limiting and companding sound broadcast signals without enrichment of their spectrum with considerable increase in relative mean power and are characterised by high control efficiency in channels with unstable transmission coefficient, reduced distortions when varying control parametres of signals with rapid change of level, as well as subjective perceptible quality of signal due to reduced masking of its high-frequency components. This is ensured by using inertial automatic control of level and delay of input and output signals respectively by approximately 160 and 10 mcs. ^ EFFECT: use of subjective evaluation of signal quality and efficient use of radio transmission equipment. ^ 2 cl, 3 dwg |
