Hossein Omoumi has introduced innovations related to the Persian Ney and percussion instruments (Tombak and Daf). His research on the Ney and percussion opened new possibilities and introduced significant innovations to these instruments. He has added a mechanism to the traditional reed flute of Iran or the Ney (Patent Number 27251 granted in Iran). This mechanism enables the player to play notes that were impossible to play in the past. He has also invented a system to adjust surface tension on the traditional Persian drums, Tombak and Daf (Patent No. 27250 for Daf and No. 27252 for Tombak granted in Iran). This system enables the player to tune the Tombak or Daf which was done by applying heat to the skin surface in the past. These tunable Tombak and Dafs are being used by professional Persian Tombak and Daf players around the world. The ney mechanism has been endorsed by the greatest Iranian master of ney, Ostad Hassan Kassai of Isfahan, Iran.