| Presentation | 1999/2/26 SubjcctivcQualityEvaluationofIntcrnctTclcphony Hitoshi Aoki, Yasuhito Hayashi, Yoshio Nagashima, Hiroshi Koyano, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently voice communication services over IP networks have been developed great deal. For these services, network delay is one of the important factors in degradation of speech quality. It is, therefore, necessary to fully investigate its effects on speech quality for the development of voice over IP. This paper describes the result of the network delay of UDP packet imitating audio packet over Internet. With the result as a prerequisite, we conducted conversation-opinion tests, and have examined the influence which network delay has on Internet Telephone Adaptor. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | internet / internet telephone adapter / network delay / echo / speech quality evaluation |
| Paper # | CQ98-90 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 1999/2/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | SubjcctivcQualityEvaluationofIntcrnctTclcphony |
| Sub Title (in English) | |
| Keyword(1) | internet |
| Keyword(2) | internet telephone adapter |
| Keyword(3) | network delay |
| Keyword(4) | echo |
| Keyword(5) | speech quality evaluation |
| 1st Author's Name | Hitoshi Aoki |
| 1st Author's Affiliation | NTT Human Interface Laboratory() |
| 2nd Author's Name | Yasuhito Hayashi |
| 2nd Author's Affiliation | NTT Human Interface Laboratory |
| 3rd Author's Name | Yoshio Nagashima |
| 3rd Author's Affiliation | NTT Human Interface Laboratory |
| 4th Author's Name | Hiroshi Koyano |
| 4th Author's Affiliation | NTT Human Interface Laboratory |
| Date | 1999/2/26 |
| Paper # | CQ98-90 |
| Volume (vol) | vol.98 |
| Number (no) | 619 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |