ACM DEV '13最新文献

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Building a crowdsourcing community: how online social learning helps in poverty reduction 建立众包社区:在线社会学习如何帮助减少贫困
ACM DEV '13 Pub Date : 2013-01-11 DOI: 10.1145/2442882.2442909
Han Ei Chew, Borort Sort, P. Haddawy
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引用次数: 4
Exploring playback and recording of web-based audio media on low-end feature phones 探索在低端功能手机上播放和录制基于网络的音频媒体
ACM DEV '13 Pub Date : 2013-01-11 DOI: 10.1145/2442882.2442899
Akhil Mathur, S. Agarwal, S. Jaiswal
{"title":"Exploring playback and recording of web-based audio media on low-end feature phones","authors":"Akhil Mathur, S. Agarwal, S. Jaiswal","doi":"10.1145/2442882.2442899","DOIUrl":"https://doi.org/10.1145/2442882.2442899","url":null,"abstract":"Web-based audio information systems have the potential to bring the full promise of the Internet to the developing world. However, these systems run into a practical difficulty - insufficient support for playback and recording of web-based multimedia from feature phones. At the moment, feature phones constitute more than 90% of all phone shipments in emerging markets like India, and will continue to form a significant fraction (>50%) several years from now.\u0000 In this paper we explore the practical challenges associated with audio playback and audio recording on feature phones. We present a systematic evaluation of the options to play and record audio media in a range of feature phones, and highlight problems stemming from a lack of memory, slow processor speeds and no support for progressive streaming downloads. In summary, the players in these phones are usually designed to handle audio files of short durations (a few minutes). Anything longer results in frequent breaks in playback (of up to 300msecs), and a very poor experience for the end-users. We investigate various solution approaches that may overcome these issues, and present an implementation and evaluation that achieves a seamless user experience on any audio stream.","PeriodicalId":240004,"journal":{"name":"ACM DEV '13","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129928882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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