Development of a Broadcast Sound Receiver for Elderly Persons

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• 作者：Tomoyasu Komori (1) komori.t-bw@nhk.or.jp
  Atsushi Imai (2) imai.a-dy@nhk.or.jp
  Nobumasa Seiyama (2) seiyama.n-ek@nhk.or.jp
  Reiko Takou (2) takou.r-go@nhk.or.jp
  Tohru Takagi (1) takagi.t-fo@nhk.or.jp
  Yasuhiro Oikawa (3) yoikawa@waseda.jp
• 关键词：elderly people – ; phoneme recognition – ; loudness – ; stereo correlation – ; subjective evaluation – ; background ; sound suppression
• 刊名：Lecture Notes in Computer Science
• 出版年：2012
• 出版时间：2012
• 年：2012
• 卷：7382
• 期：1
• 页码：681-688
• 全文大小：395.8 KB
• 参考文献：1. Nakamura, H., Sawaguchi, M., Masaoka, K., Watanabe, K., Yamasaki, Y., Miyasaka, E., Yasuoka, M., Seki, H.: Better Audio Balance Broadcasting service for elderly people.-Back Ground Sound Levels of Television Programs for Easy Listening. In: 2003 Proc. Spring Meet. Acoust. Soc. Jpn.,1-5-5, pp. 455–456 (2003) (in Japanese)
  2. Komori, T., Takagi, T., Kurozumi, K., Shoda, K., Murakawa, K.: A Device to Evaluate Broadcast Background Sound Balance Using Loudness for Elderly Listeners. In: Miesenberger, K., Klaus, J., Zagler, W., Karshmer, A. (eds.) ICCHP 2010. LNCS, vol. 6180, pp. 560–567. Springer, Heidelberg (2010)
  3. Komori, T., Takagi, T.: Subjective evaluation on the background sound of TV program by elderly people in the home environment. In: Proc. Autumn Meet. Acoust. Soc. Jpn., 3-10-14 (September 2009) (in Japanese)
  4. Nakayama, Y., Inoue, T., Watanabe, K., Umeda, T., Miyasaka, E.: Perceptual Measurement System for Mixing Balance in Audio Programs. In: Proc. Autumn Meet. Acoust. Soc., pp. 615–616 (September 1997) (in Japanese)
  5. Kurozumi, K., Okamoto, N.: Real-time Loudness Level Meter for Broadcasting Stations and Recent Trends of Standardization. Journal of the Institute of Image Information and Television Engineers 60(7), 1012–1017 (2006) (in Japanese)
  6. Paulus, E., Zwicker, E.: Computer programs for calculating loudness from 1/3 octave band levels or from critical band levels. Acoustica 27, 253–266 (1972)
  7. Komori, T., Komiyama, S., Dan, H., Takagi, T., Shoda, K., Kurozumi, K., Hoshi, H., Murakawa, K.: A Investigation of the Audio Balance Control based on the Loudness Level. IEICE Transactions J92-A(5), 344–352 (2009) (in Japanese)
  8. Komori, T., Seiyama, N., Takagi, T.: A Verification on Objective Evaluation Method of Appropriate Broadcasting Sound Balance for Elderly Listeners. In: Proc. Autumn Meet. Acoust. Soc. Jpn., 1-R-2 (September 2010) (in Japanese)
  9. Murayama, Y., Hamada, H., Komiyama, S., Kawabata, Y.: Adaptive control for advanced reproduction of narration voice. In: 13th AES Regional Convention, Tokyo (August 2007)
  10. Imai, T., Sato, S., Kobayashi, A., Onoe, K., Homma, S.: Online Speech Detection and Dual-Gender Speech Recognition for Captioning Broadcast News. In: Proc. 9th Interspeech Wed1CaP-1, pp. 1–4 (2006)
• 作者单位：1. NHK Engineering Service, INC, 1鈥?0鈥?1 Kinuta, Setagaya-ku, Tokyo 157鈥?540, Japan2. NHK Science and Technical Research Laboratories, 1-10-11 Kinuta, Setagaya-ku, Tokyo 157-8510, Japan3. Department of Intermedia Art and Science, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
• ISSN：1611-3349

文摘

With the aim of making speech easier to listen to on a TV receiver, a noble method for back-ground-sound suppression processing was proposed, and the results of evaluation tests using broadcast-program sound showed that a prototype device was able to adjust a suitable level of background sound for elderly people. Our proposed method was able to suppress the magnitude of sound components with low correlation by using 2ch stereo signals and perform gain-control only on the speechless intervals. The preparatory evaluation tests confirm that it is possible to suitably reduce program background volume by the proposed method. On the basis of this result, a device for suppressing background sound by decoding the transport stream (TS) of a broadcast program was prototyped. The results of evaluation tests using this device demonstrate that the magnitude of background sound can be adjusted to a suitable level for elderly people.