| Presentation | 2000/10/20 Characteristics of Test Artificial signals for Objective Quality Evaluation of Echo Cancellers Nobuhiko Kitawaki, Futoshi Asano, Takeshi Yamada, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Performance of the echo canceller can be conventionally measured by putting white Gaussian noise into the echo canceller system. However, white Gaussian noise is not adequate as the test signal, since the performance may depend on the cahracteristics of input test signal, and the characteristics of the white Gaussian noise differ from those of real spoken language. This paper describes characteristics of spoken language required for objective quality evaluation of echo cancellers. Following test signals having various time and frequency characteristics of spoken language are examined : white Gaussian noise, frequency weighted Gaussian noise, artificial voice, composite source signal, and real voice. It is concluded that artificial voice having average characteristics of spoken language in time and frequency domain is satisfied for objective quality evaluation of echo cancellers other than conventional white Gaussian noise, frequency weighted white Gaussian noise, and composite source signal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | objective quality evaluation / artificial signal / echo canceller / ERLE / ITU |
| Paper # | CQ2000-41 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2000/10/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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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) | Characteristics of Test Artificial signals for Objective Quality Evaluation of Echo Cancellers |
| Sub Title (in English) | |
| Keyword(1) | objective quality evaluation |
| Keyword(2) | artificial signal |
| Keyword(3) | echo canceller |
| Keyword(4) | ERLE |
| Keyword(5) | ITU |
| 1st Author's Name | Nobuhiko Kitawaki |
| 1st Author's Affiliation | University of Tsukuba() |
| 2nd Author's Name | Futoshi Asano |
| 2nd Author's Affiliation | Electrotechnical Laboratory |
| 3rd Author's Name | Takeshi Yamada |
| 3rd Author's Affiliation | Electrotechnical Laboratory |
| Date | 2000/10/20 |
| Paper # | CQ2000-41 |
| Volume (vol) | vol.100 |
| Number (no) | 398 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |