| 摘要 |
FIELD: physics.SUBSTANCE: method comprises operation of a loudspeaker in test and operating modes and applying voltage U(t) on the radiator, said voltage being a sum of a traditional signal Utr(t) which is proportional to the value of the desired acoustic pressure and two additional signals Ud(t) and Und(t):wherein Utr(t)=k·p(t); Ud(t)=k·(a0·p(t)'+a1·p(t)");Calculations take into account a coefficient k, which determines the volume level, the acoustic pressure p(t) value, first and second pressure derivatives P(t)', P(t)", a constant at which characterises the decay rate of the oscillatory system, constants a0, a1, at which the rate of rise and fall of acoustic pressure signals maximally approximates the rate of rise and fall of test signals, constants a2, a3, at which the shape of the acoustic pressure signal maximally approximates the shape of the test signals.EFFECT: high sound quality.6 cl, 2 dwg |
