1) Microsoft voice API Microsoft's voice API (SAPI for short) is an application programming interface (API), which includes speech recognition (SR) and speech synthesis (SS) engines and is widely used under Windows. At present, Microsoft has released several versions of SAPI (the latest version is SAPI 5.4), either as a development kit of Speech SDK or directly included in the windows operating system. SAPI supports the recognition and reading of multiple languages, including English, Chinese and Japanese.
2).IBM viaVoiceIBM is one of the institutions that started speech recognition research earlier. As early as the late 1950s, IBM began to study speech recognition. Computers are designed to detect specific language patterns and obtain statistical correlations between sounds and corresponding characters. 1999, IBM released a free version of VoiceType. In 2003, IBM authorized ScanSoft to have the exclusive distribution right of desktop products based on its viability, and then ScanSoft merged with Nuance. Now the viability has long faded out of people's sight, replaced by subtle differences.
3)NuanceNuance communication is a multinational computer software technology company headquartered in Burlington, Massachusetts, USA, which mainly provides voice and image solutions and applications. At present, the business focuses on server and embedded voice recognition, telephone steering system, automatic telephone directory service, etc. Besides speech recognition technology, Nuance speech technology also includes speech synthesis, voiceprint recognition and other technologies. In the world voice technology market, more than 80% of voice recognition uses Nuance recognition engine technology, and its name has more than 1000 patented technologies. The voice products developed by the company can support more than 50 languages and have more than 2 billion users around the world. Nuance's speech recognition service is applied to Siri speech recognition of Apple's iPhone 4S.
4) As the largest intelligent voice technology provider in China, Iflytek Iflytek has long-term research and accumulation in the field of intelligent voice technology, and has international leading achievements in Chinese speech synthesis, speech recognition and oral evaluation. It occupies more than 60% of the voice technology market in China, and the market share of voice synthesis products reaches more than 70%.
5) Other influential commercial voice interaction platforms include Google's voice search, Baidu and sogou's voice input methods.