| Presentation | 2021-11-15 [Poster Presentation] Playback Sound Degradation of Digital Audio Equipment Caused by High Frequency Electromagnetic Noise Applied via USB Yuki Matsuo, Takahiro Yoshida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, PC (personal computer) audio has become popular and the sound quality of digital audio equipment has been improving. However, it has been reported that indirect factors unrelated to the analog audio signal such as the type of cable and the conditions of the PC, affect the playback sound quality and integrity. However, the mechanism of the sound degradation has not been clarified. In our laboratory we are considering that one of the causes of these phenomena is the non-audible high frequency electromagnetic noise. Therefore, in this study, we measured the audio signal output from the audio DAC (digital to analog converter) when high-frequency noise was applied on the power line on the USB (universal serial bus) interface of the audio DAC to elucidate the mechanism. From measured results, it was measured that the high-frequency noise generated the hum noise and intermodulation distortion noise on audible playback sound of the one type of audio DAC, and it was found that high frequency noise could affect to the audible playback sound. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | High frequency electromagnetic noise / digital audio equipment / USB / playback sound |
| Paper # | EA2021-41,EMM2021-68 |
| Date of Issue | 2021-11-08 (EA, EMM) |
| Conference Information | |
| Committee | EMM / EA / ASJ-H |
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| Conference Date | 2021/11/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Beginners Session] Engineering/Electro Acoustics, Content Processing, Digital Watermarking, Psychological and Physiological Acoustics, and Related Topics |
| Chair | Ryoichi Nishimura(NICT) / Yoshinobu Kajikawa(Kansai Univ.) / 加藤 宏明(NICT) |
| Vice Chair | Masaaki Fujiyoshi(Tokyo Metropolitan Univ.) / Masatsugu Ichino(Univ. of Electro-Comm.) / Kenichi Furuya(Oita Univ.) / Shoichi Koyama(Univ. of Tokyo) / 坂本 修一(東北大) |
| Secretary | Masaaki Fujiyoshi(Utsunomiya Univ.) / Masatsugu Ichino(NICT) / Kenichi Furuya(NTT) / Shoichi Koyama(RitsumeikanUniv.) / 坂本 修一(東大) |
| Assistant | Shoko Imaizumi(Chiba Univ.) / Youichi Takashima(Kaishi Professional Univ.) / Yukou Wakabayashi(Tokyo Metropolitan Univ.) / Tatsuya Komatsu(LINE) |
| Paper Information | |
| Registration To | Technical Committee on Enriched MultiMedia / Technical Committee on Engineering Acoustics / Auditory Research Meeting |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Playback Sound Degradation of Digital Audio Equipment Caused by High Frequency Electromagnetic Noise Applied via USB |
| Sub Title (in English) | |
| Keyword(1) | High frequency electromagnetic noise |
| Keyword(2) | digital audio equipment |
| Keyword(3) | USB |
| Keyword(4) | playback sound |
| 1st Author's Name | Yuki Matsuo |
| 1st Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 2nd Author's Name | Takahiro Yoshida |
| 2nd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| Date | 2021-11-15 |
| Paper # | EA2021-41,EMM2021-68 |
| Volume (vol) | vol.121 |
| Number (no) | EA-246,EMM-247 |
| Page | pp.pp.80-84(EA), pp.80-84(EMM), |
| #Pages | 5 |
| Date of Issue | 2021-11-08 (EA, EMM) |