Speech Signal Processing Technology for Smart Devices
As the growing popularity of visiting Japan, the number of foreign tourists has been increasing every year. Consequently, a demand of multilingual speech translation services is rising from the practical needs of performing effective communications between foreign tourists and local service counter clerks without feeling language barrier in public transportation services or shopping centers.
However, in a crowded and noisy environment such as public transportation or shopping center, to specifically recognize speaker's voice for translation service is quite challenging due to the background noise that is recorded by microphone. In order to enhance noise reduction, Hitachi has been developing the innovative noise reduction technology on special purpose device using multiple microphones. Furthermore, an issue of conventional multilingual speech translation service is that users must press a button for translating each phrase of their conversations. This is very inconvenient for users when they often carry many bags in a situation of visiting service counter for information or services.
Based on the speech signal processing technology that has been cultivated by Hitachi for many years, Hitachi has developed a speech signal technology for general purpose smart devices instead of special purpose device. This newly developed technology has achieved the multilingual speech translation using smart device under a crowded environment such as public transportation area or shopping center. It is also capable of automatically recognizing speech intervals accurately without pressing any button to determining speech timing for translation.
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