| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2015-03-26 |
| タイトル |
|
|
タイトル |
各種マイクロフォンの特性に關する研究(其の一) : 振幅特性と周波數特性 |
| 言語 |
|
|
言語 |
jpn |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| その他のタイトル（英） |
|
|
その他のタイトル |
On the Characteristics of Microphones. (Part I.) : The Amplitude and Frequency Characteristics. |
| 著者 |
佐藤, 孝二
河合, 平司
楯, 林次
SATO, Kozi
KAWAI, Heizi
TATE, Rinzi
|
| 出版者 |
|
|
出版者 |
東京帝國大學航空研究所 |
| 出版者（英） |
|
|
出版者 |
Aeronautical Research Institute, Tokyo Imperial University |
| 書誌情報 |
東京帝國大學航空研究所報告
en : Report of Aeronautical Research Institute, Tokyo Imperial University
巻 9,
号 110,
p. 38-61,
発行日 1934-08
|
| 抄録（英） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
The amplitude and frequency characteristics of microphones were measured strictly in a sound-proof chamber. The microphones used in the experiment were three condenser types, four electro-dynamic cones and one resistance type. As the source of sound, the cone speaker of moving coil type was excited by the valve oscillator of variable pitch. Its radiant energy was measured by the Rayleigh disc set in front of the source, its distance from source being more than 50 cm. In our experiments, the distance between the source and the microphone must be kept more than three metres, otherwise the standing wave appears between them. The output current in the microphone amplified by the resistance-capacity amplifier was measured. As for frequency characteristics, we made the experiments with different conditions: -1) The distance between the source and the microphone was varied from 3m. to 5m. 2) The sources of different nature were used. We found good coincidence between their results and moreover, the frequency characteristic obtained by the experiment was identical with that derived from the amplitude characreristic. |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00387631 |
| 資料番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: SA4147651000 |
SA4147651.pdf (836.9 kB)
