Characteristics of a Carbon Granule Microphone with Carbonaceous Electrodes
Summary :
A carbon granule microphone with carbonaceous electrodes, which is lower in cost and more convenient for mass production than the conventional microphone with gold plated electrodes, was studied as a telephone microphone. A molded piece made from a mixture of synthetic resin and carbon powder can be used for the back electrode and paint made from it can be used to coat the dome electrode. A new microphone, whose sensitivity is as high as a conventional microphone, shows higher resistance. This means that the efficiency of the new microphone seems to be slightly less. However, the sensitivity change in the new microphone under excitation by voice is less than that of the conventional microphone. The new microphone sensitivity dependence on DC input power is almost the same as that of a conventional microphone.
- Publication
- IEICE TRANSACTIONS on transactions Vol.E63-E No.9 pp.662-669
- Publication Date
- 1980/09/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Acoustics
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Juro OHGA, Seiiti SHIRAI, Hiroaki NOMURA, Mizuhiro TOBITA, "Characteristics of a Carbon Granule Microphone with Carbonaceous Electrodes" in IEICE TRANSACTIONS on transactions,
vol. E63-E, no. 9, pp. 662-669, September 1980, doi: .
Abstract: A carbon granule microphone with carbonaceous electrodes, which is lower in cost and more convenient for mass production than the conventional microphone with gold plated electrodes, was studied as a telephone microphone. A molded piece made from a mixture of synthetic resin and carbon powder can be used for the back electrode and paint made from it can be used to coat the dome electrode. A new microphone, whose sensitivity is as high as a conventional microphone, shows higher resistance. This means that the efficiency of the new microphone seems to be slightly less. However, the sensitivity change in the new microphone under excitation by voice is less than that of the conventional microphone. The new microphone sensitivity dependence on DC input power is almost the same as that of a conventional microphone.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e63-e_9_662/_p
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@ARTICLE{e63-e_9_662,
author={Juro OHGA, Seiiti SHIRAI, Hiroaki NOMURA, Mizuhiro TOBITA, },
journal={IEICE TRANSACTIONS on transactions},
title={Characteristics of a Carbon Granule Microphone with Carbonaceous Electrodes},
year={1980},
volume={E63-E},
number={9},
pages={662-669},
abstract={A carbon granule microphone with carbonaceous electrodes, which is lower in cost and more convenient for mass production than the conventional microphone with gold plated electrodes, was studied as a telephone microphone. A molded piece made from a mixture of synthetic resin and carbon powder can be used for the back electrode and paint made from it can be used to coat the dome electrode. A new microphone, whose sensitivity is as high as a conventional microphone, shows higher resistance. This means that the efficiency of the new microphone seems to be slightly less. However, the sensitivity change in the new microphone under excitation by voice is less than that of the conventional microphone. The new microphone sensitivity dependence on DC input power is almost the same as that of a conventional microphone.},
keywords={},
doi={},
ISSN={},
month={September},}
Copy
TY - JOUR
TI - Characteristics of a Carbon Granule Microphone with Carbonaceous Electrodes
T2 - IEICE TRANSACTIONS on transactions
SP - 662
EP - 669
AU - Juro OHGA
AU - Seiiti SHIRAI
AU - Hiroaki NOMURA
AU - Mizuhiro TOBITA
PY - 1980
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E63-E
IS - 9
JA - IEICE TRANSACTIONS on transactions
Y1 - September 1980
AB - A carbon granule microphone with carbonaceous electrodes, which is lower in cost and more convenient for mass production than the conventional microphone with gold plated electrodes, was studied as a telephone microphone. A molded piece made from a mixture of synthetic resin and carbon powder can be used for the back electrode and paint made from it can be used to coat the dome electrode. A new microphone, whose sensitivity is as high as a conventional microphone, shows higher resistance. This means that the efficiency of the new microphone seems to be slightly less. However, the sensitivity change in the new microphone under excitation by voice is less than that of the conventional microphone. The new microphone sensitivity dependence on DC input power is almost the same as that of a conventional microphone.
ER -
English
