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A class of energy transducers capable of receiving alternating current and generating acoustic waves resembling very closely the characteristics of...



= Encyclopedia Article; = Research Update
Figure 1.Exploded view of conventional dynamic earphone. (After P. Milton, Headphones: History and Measurement, Audio, 26(5):90–94, May 1978)
From Encyclopedia article 'Earphones'
Figure 2.Cross section of external-type hearing aid earphone. (After W. R. Hodgson and P. H. Skinner, eds., Hearing Aid Assessment and Use in Audiologic Habilitation, Williams and Wilkins, 1977)
From Encyclopedia article 'Earphones'
Figure 3.Cross section of internal-type hearing aid earphone. (After W. R. Hodgson and P. H. Skinner, eds., Hearing Aid Assessment and Use in Audiologic Assessment, Williams and Wilkins, 1977)
From Encyclopedia article 'Earphones'