Besides of air flow direction (ingressive and egressive), all other utterance manners are same as our whispering, so that proposed method can be used without special practice. microphone) of the apparatus very close to the user's mouth with an small gap formed between the mouth and the apparatus, the proposed silent voice input solution can capture stable utterance signal with a very small voice leakage, and thereby allowing the user to use ultra-low volume speech input in public and mobile situations, without disturbing surrounding people. Compared with conventional voice input solutions which are based on normal speech or whispering that use egressive (breathing-out) airflow while speaking, the proposed “silent” voice input method is performed by using opposite (ingressive or breathing-in) airflow while speaking. Implementations of the subject matter described herein provide a silent voice input solution without being noticed by surroundings. Hence there is no easy fix even if voice recognition system performance is greatly improved. These are not technical issues but social issues. On the other hand, there is still a risk of scattering private information to unintended audiences. This is mainly because the voice leakage could disturb and even annoy surrounding people in quiet environment. SUMMARYĪlthough performance of voice input has been greatly improved, the voice input is still rarely used in public spaces, such as office or even homes.
Additionally, smartphones and smart Internet-of-things (IoT) devices also incorporate voice input interfaces into people's daily life. With fast development of voice recognition engines, such as cloud-based voice recognition engines, voice input enables an improved recognition accuracy and has already widely used especially for specific application scenarios such as automatic telephone answering systems, hands-free operations while driving and package-handling, and clinical record dictations by doctors. Voice input as an effective interface enables high-speed input without special training of for example input methods.
To the extent appropriate a claim for priority is made to the above disclosed applications. 9, 2017, which applications are hereby incorporated by reference in their entirety herein. 6, 2019, which was the National Stage of International Application No. This application is a continuation of U.S.
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