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A Single-Chip Speech Dialogue Module and Its Evaluation on a Personal Robot, PaPeRo-Mini
Miki SATO Toru IWASAWA Akihiko SUGIYAMA Toshihiro NISHIZAWA Yosuke TAKANO
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E93-A
No.1
pp.261-271 Publication Date: 2010/01/01 Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.261 Print ISSN: 0916-8508 Type of Manuscript: PAPER Category: Digital Signal Processing Keyword: speech recognition, DOA estimation, noise cancellation, microphone array, echo cancellation, speech dialogue module,
Full Text: PDF(1MB)>>
Summary:
This paper presents a single-chip speech dialogue module and its evaluation on a personal robot. This module is implemented on an application processor that was developed primarily for mobile phones to provide a compact size, low power-consumption, and low cost. It performs speech recognition with preprocessing functions such as direction-of-arrival (DOA) estimation, noise cancellation, beamforming with an array of microphones, and echo cancellation. Text-to-speech (TTS) conversion is also equipped with. Evaluation results obtained on a new personal robot, PaPeRo-mini, which is a scale-down version of PaPeRo, demonstrate an 85% correct rate in DOA estimation, and as much as 54% and 30% higher speech recognition rates in noisy environments and during robot utterances, respectively. These results are shown to be comparable to those obtained by PaPeRo.
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