In shul last shabbos, (just visiting) I heard a teenager saying the shma of birchas hashachar, and he had the common three syllable E-cha-dih. After he repeated the performance in the regular Shema, I went to pick on him after davening, showing him the lack of a shva or a dagesh in the daled. I told him the dalet as a beged kefes, has a rafeh form, dz,or dth, which is articulated with the previous syllable, it can be held longer, to be maarich in echad, and that there are 19 soft daleds in the krias shma, in addition to the soft dalet in the kinui of Hashem.
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