[PrevPage] [Next] [INDEX ]  Volume 1   13 Mar. 1876    Page 52  [Source] [ NOTES ]
    Prof. Monroe then tried whether consonants could be distinguished. He sang several syllables like pee vee me de +c ­ but we were unable to distinguish between them at the receiving end -- although there were differences audible.

    The experiments were upon the whole satisfactory as demonstrating the fact that the timbre as well as the pitch of vocal sounds had been transmitted telegraphically.

    Noted by A.G.B.
    March 15th 1876

Tuesday, March 14th, 1876

  1. Automatic Transmitter

    An Automatic Transmitter was arranged as in Fig I so as to enable me to carry on experiments without the necessity of employing Mr. Watson every moment of the time. The armatures of A and B were kept in continuous vibrations by the action of a local battery (L). To the end of B's armature an arch of copper wire (W) was fastened the ends of which dipped into two water cups or cells a b.
    The Receiving Instrument C was in another room. The armature of C was tuned to be in unison with A and B.

[PrevPage] [Next] [INDEX ]  Volume 1   14 Mar. 1876    Page 52  [Source] [ NOTES ]