منابع مشابه
Modulation Distortion in Loudspeakers
When comparing a loudspeaker with direct radiator bass system to one with horo loaded bass, the subjective judgment is that the one with the horn loaded bass is "cleaner". The difference in listening quality appears to be due to modulation distortion. The mathematical analysis of modulation distortion is reviewed and spectrum analyzer measurements are described which have been correlated with l...
متن کاملpostnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
Ironless Loudspeakers with Ferrofluid Seals
This paper describes the drawbacks related to the iron in the classical electrodynamic loudspeaker structure. Then it describes loudspeaker motors without any iron, which are only made of permanent magnets. They are associated to a piston like moving part which glides on ferrofluid seals. Furthermore, the coil is short and the suspension is wholly pneumatic. Several types of magnet assemblies a...
متن کاملOptimal Design of Loudspeakers with Nonlinear Control
Nonlinear loudspeaker control opens new degrees of freedom in passive driver design. Transducers having a short voice coil overhang are more sensitive and efficient at low amplitudes than transducers using a linear motor. Nonlinear distortion generated at higher amplitudes can actively be compensated by nonlinear control. This paper investigates the behavior of real loudspeakers under control u...
متن کاملRecent Studies of Carotenoid Biosynthesis
The effects of nicotine on carotenoid biosynthesis have been investigated in a non-photosynthetic Flavobacterium strain 0147, and in two photosynthetic bacteria, Rhodopseudomonas spheroides and Rhodomicrobium vanrtielii. In Flavobacterium, nicotine inhibits the synthesis of the nOrmal main carotenoid, zeaxanthin, and causes an accumulation of lycopene at high nicotine concentration, and rubixan...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1960
ISSN: 0001-4966
DOI: 10.1121/1.1936449