Abstract: An object of this invention is to provide a canal-type receiver capable of reproducing sound fields spanning front-to-rear and/or top-to-bottom. Thus, an ear piece of the canal-type receiver has a substantially cylindrical shape and includes a cylindrical portion including a sound guiding tube emitting a sound wave, radiated from a sound-emission unit in a receiver, to the inside of the external auditory canal, the sound guiding tube is configured so that a directional sound wave radiation axis of the sound wave faces a predetermined position of a wall of the external auditory canal in such a state that a cylindrical portion of the ear piece is mounted at a predetermined position in the external auditory canal, whereby the sound wave radiated from the sound guiding tube is reflected by a portion of the external auditory canal wall to arrive at the eardrum.

Abstract: An object of this invention is to provide a canal-type receiver capable of reproducing sound fields spanning front-to-rear and/or top-to-bottom. Thus, an ear piece of the canal-type receiver has a substantially cylindrical shape and includes a cylindrical portion including a sound guiding tube emitting a sound wave, radiated from a sound-emission unit in a receiver, to the inside of the external auditory canal, the sound guiding tube is configured so that a directional sound wave radiation axis of the sound wave faces a predetermined position of a wall of the external auditory canal in such a state that a cylindrical portion of the ear piece is mounted at a predetermined position in the external auditory canal, whereby the sound wave radiated from the sound guiding tube is reflected by a portion of the external auditory canal wall to arrive at the eardrum.

Abstract: A ferritic stainless steel having improved weldability and oxidation resistance, consisting essentially of 11.0 - 20.0% by weight of Cr, less than 0.10% by weight of C, less than 1.5% by weight of Si, less than 1.5% by weight of Mn, less than 1.5% by weight of Zr, the ratio of (Zr%)/(C% + N%) being higher than 7, and the balance of Fe, and the nitrogen amount being restricted to less than 0.015% by weight.