測定用パルス放電音源の提案

概要

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This paper proposes a new pulse discharge sound source for acoustical measurements and discribes the construction and acoustical characteristics of the source. Existing pulse sound source generate sound sources generate sound pluse by a spark discharge using static energey in the charged condenser. The sound source proposed in this paper uses electromagnetic energy in a transformer. The current in the primaty turn of the transformer is cut off suddenly and a spark discharge is generated between the electrodes connected to the secondary turn. The timing of discharge is easily controlled by the electronic switch in the primarty turn. The duration of the sound pluse is very short and controllable and the power spectrum of the sound covers very wide frequencies. The extent of the nonlinearity is very small and the nondirectivity is realized. The reproducibility is good. The pluse discharge sound source proposed is useful for linear acoustical measurements
社団法人日本音響学会の論文
1984-03-01