Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Shokichiro Yoshikawa"'
Autor:
Nobuo Koizumi, Masaki Sawaguchi, Akira Nishimura, Shokichiro Yoshikawa, Shogo Kiryu, Juro Ohga, Kaoru Ashihara
Publikováno v:
Acoustical Science and Technology. 26:50-54
Detection threshold for distortions due to time jitter was measured in a 2 alternative forced choice paradigm with switching sounds. Music signals with random jitter were simulated on the digital domain. The size of jitter was arbitrary controlled so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::235e7dc404f745dfc32208486f509ddc
https://doi.org/10.1250/ast.26.50
https://doi.org/10.1250/ast.26.50
Publikováno v:
Journal of Applied Physics. 50:4767-4772
Surface‐acoustic‐wave (SAW) attenuation due to platelet defects in quartz substrate (40° rotated Y cut) was investigated. The dimensions of the defects, which are formed in a lapping and polishing process, were quantitatively measured. The data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c2700619243ec61e828b04e24ac6b1c
https://doi.org/10.1063/1.326536
https://doi.org/10.1063/1.326536
Autor:
Shokichiro Yoshikawa, Mikio Tohyama
Publikováno v:
The Journal of the Acoustical Society of America. 70:1674-1678
An approximate formula of the space and ensemble averaged reverberation decay curve in a rectangular reverberant room is derived here theoretically. This approximate decay curve is written by the summation of the decay curve in three (oblique, tangen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dadf42f7a01c5a542fd4e07659ddca01
https://doi.org/10.1121/1.387232
https://doi.org/10.1121/1.387232
Publikováno v:
Journal of Applied Physics. 52:376-380
In the temperature range −200 –+40 °C, polarization echo characteristics of Rochelle salt and LiNbO3 powder are measured. Measurements are carried out on the two‐pulse echo and the readout echo, which has a transient relaxation process with ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8914ba88c589f39dab22f36cb71f56cf
https://doi.org/10.1063/1.328504
https://doi.org/10.1063/1.328504
Autor:
Shokichiro Yoshikawa, Takashi Kimura
Publikováno v:
Journal of Applied Physics. 51:4950-4955
Even during the reading process, the repetitive application of an incident pulse gives rise to an increase and a saturation in the echo height in piezoelectric powder. This phenomenon was experimentally measured in detail as a function of the repetit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::429065d7d90e906858b2265a1f62f735
https://doi.org/10.1063/1.328371
https://doi.org/10.1063/1.328371
Autor:
Shokichiro Yoshikawa, Takashi Wakuri
Publikováno v:
The Journal of the Acoustical Society of America. 84:S68-S68
Usually, the frequency responses of loudspeakers are measured by the point‐by‐point method in a free sound field. In this method, accuracy of the measurement depends on the precision of the free sound field. Since the wavelength of sound is quite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65dc5dfc88e5f6d3268c7e0d45f3b427
https://doi.org/10.1121/1.2026429
https://doi.org/10.1121/1.2026429
Publikováno v:
Electronics Letters. 11:259
The letter reports a new apodisation of electrodes which provides surface-acoustic-wave filters capable of operation without apodisation loss and with sufficiently large stopband attenuation. The effectiveness of the apodisation was shown by experime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa611af452725012d7ce4228c268f25a
https://doi.org/10.1049/el:19750196
https://doi.org/10.1049/el:19750196
Publikováno v:
Electronics Letters. 16:57
The performance of a 1.6 Gbit/s optical receiver employing a s.a.w. filter as a timing tank is reported. The error-rate characteristics in a p.c.m. transmission system using a 1.3 μm In-GaAsP laser and single-mode fibres were studied. The average re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4291e18323a1563be3f6c681d227798
https://doi.org/10.1049/el:19800043
https://doi.org/10.1049/el:19800043
Autor:
Shokichiro Yoshikawa, Katsuyoshi Hamasaki, Tsutomu Yamashita, Tadayuki Kobayashi, Hidemi Narita, Sumitaka Takeuchi
Publikováno v:
Japanese Journal of Applied Physics. 24:1627
Both resonant and microwave-induced steps in the V-I characteristics of four-Josephson-junction loop with a small junction-parameter spread have been investigated. An rf current was superimposed onto a dc current and the radio frequency was tuned to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81dc7a916a1752bc2d54b29f6f4b130a
https://doi.org/10.1143/jjap.24.1627
https://doi.org/10.1143/jjap.24.1627
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