“…The purpose of this systematic survey is, to sum up, the best available research on automatic speech recognition of Indian languages. Kaur et al [147] reviewed the status of speech recognition research conducted on tonal languages spoken around the globe. Authors observed that a lot of work has been done for the Asian continent tonal languages, i.e., Chinese, Thai, Vietnamese, Mandarin, but little work been reported for the Mizo, Bodo, Indo-European tonal languages like Punjabi, Latvian, Lithuanian as well for the African continental tonal languages, i.e., Hausa and Yoruba (Tables 1, 2).…”