Hardware speech recognition for user interfaces in low cost, low power devices

Nedevschi, Sergiu; Patra, Rabin; Brewer, Eric

doi:10.1145/1065579.1065760

Cited by 34 publications

(8 citation statements)

References 11 publications

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“…A fused multiply-add unit then performs the scale and weight adjustment. The 'logadd' unit evaluates the logarithm of additon and hence completes equation ( 5). The logadd unit uses the following mathematical simplificationlog(A + B) = log(A(1 + The design is pipelined.…”

Section: B Phone Decode Observation Probability (Op) Unitmentioning

confidence: 99%

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Architecture for Low Power Large Vocabulary Speech Recognition

Chandra

Pazhayaveetil

Franzon

2006

2006 IEEE International SOC Conference

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This paper proposes an architecture for real-time large vocabulary speech recognition on a mobile embedded device. The speech recognition system is based on Hidden Markov Model (HMM), which involves complex mathematical operations such as probability estimation and Viterbi decoding. This computational nature makes it power hungry and realtime recognition is not achieved by porting software solutions on embedded device. Our system architecture has a low power embedded processor and dedicated ASIC units for complex computations. These units operate at a low frequency of 50MHz thus consuming low power. The system uses RAM for the intermediate values and flash memory to store acoustic and language models for speech recognition.

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Section: B Phone Decode Observation Probability (Op) Unitmentioning

confidence: 99%

“…al. [5] uses SRAM and Flash memory for processing and acoustic and language model. The vocabulary is limited to only couple of hundred words.…”

Section: Related Workmentioning

confidence: 99%

Architecture for Low Power Large Vocabulary Speech Recognition

Chandra

Pazhayaveetil

Franzon

2006

2006 IEEE International SOC Conference

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“…We also completed the design for a low-power hardware-based speech recognizer chip. 30 We estimate a 100 percent duty cycle power A delay-tolerant network system can deliver data reliably even in the face of a wide range of disruptions.…”

Section: User Interfacesmentioning

confidence: 99%

The case for technology for developing regions

Brewer

2005

Proceedings of the 14th International Conference on World Wide Web - WWW '05

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A mong the broad set of top-down Millennium Development Goals that the United Nations established in 2000 (http://www.un. org/millenniumgoals), one stands out: "Make available the benefits of new technologies-especially information and communications technologies." Alongside good governance, technology is considered among the greatest enablers for improved quality of life. However, the majority of its benefits have been concentrated in industrialized nations and therefore limited to a fraction of the world's population. We believe that technology has a large role to play in developing regions, that "First World" technology to date has been a poor fit in these areas, and that there is thus a need for technology research for developing regions.Despite the relative infancy of technology studies in developing regions, anecdotal evidence suggests that access to technology has a beneficial economic impact. Cellular telephony is probably the most visible application, but there are many others, some of which we cover in this article.The World Bank's infoDev site catalogs hundreds of information and communications technologies (ICT) projects (http://www.infodev.org), albeit not all successful. Most of these projects use existing off-the-shelf technology designed for the industrialized world.Although it is clear that there are large differences in assumptions related to cost, power, and usage, there has been little work on how technology needs in developing regions differ from those of industrialized nations. We argue that Western market forces will continue to meet the needs of developing regions accidentally at best. ICT RESEARCH FOR UNDERSERVED REGIONSEvidence from the development of other technologies, such as water pumps and cooking stoves, demonstrates widespread impact from research.1, 2 Novel ICT has the potential for great impact in a variety of fields ranging from healthcare to education to economic efficiency. However, we do not propose that ICT offers a panacea for the complex problems facing nations on the path to economic development. On the contrary, at best, ICT can enable new solutions only when applied with a broad understanding and a multidisciplinary approach.I hope the industry will broaden its horizon and bring more of its remarkable dynamism and innovation to the developing world.

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“…Online recommendation offers like those from Flipkart and Amazon, real-time advertisements on web pages and mobile devices, web search results are some of the examples of ML applications that we are familiar with. Few other applications are Optical Character Recognition (OCR) [3], speech recognition [4,5] and pattern classification [6].…”

Section: Introductionmentioning

confidence: 99%