Electronic piano amplifier
作者： Howard E Holman
DOI:
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lens.org 参考文章(4)
Benjamin F Miessner, Apparatus for the production of music ,(1932)
Benjamin F Miessner, Method and apparatus for the production of music ,(1931)
Paul H Rowe, Electronic means providing tremolo for electrically operated musical instruments ,(1947)
Nathan I Daniel, Vibrato means for audio amplifiers ,(1947)