01952nas a2200313   4500000000100000008004100001653002100042653002700063653001900090653001800109653003400127653002000161653001000181653002100191653002100212653001600233653003100249653002500280653002000305100001300325700001600338700001500354700001400369700001400383245007200397856011800469520103100587020002001618                                       d10aBandpass filters10aComputation complexity10aComputer music10aImprovization10aIntangible cultural heritages10aModel-based OPC10aMusic10amusical notation10aNotation systems10aPerformance10aPlucked-string instruments10aSource-filter models10aUser interfaces1 aP.-C. Li1 aW.-C. Chang1 aT.-M. Wang1 aY.-H. Kuo1 aA.W.Y. Su00aSource filter model for expressive Gu-Qin synthesis and its iOS app  uhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85137642694&partnerID=40&md5=a0b599cc248c9f629cda90948b2ddee73 aGu-Qin as a venerable Chinese plucked-string instrument has its unique performance techniques and enchanting sounds. It is on the UNESCO Representative List of the Intangible Cultural Heritage of Humanity. It is one of the oldest Chinese solo instruments. The variation of Gu-Qin sound is so large that carefullydesigned controls of its computer synthesizer are necessary. We developed a parametric source-filter model for re-synthesizing expressive Gu-Qin notes. It is capable to cover as many as possible combinations of Gu-Qin s performance techniques. In this paper, a brief discussion of Gu-Qin playing and its special tablature notation are made for understanding the relationship between its performance techniques and its sounds. This work includes a Gu-Qin s musical notation system and a source-filter model based synthesizer. In addition, we implement an iOS app to demonstrate its low computation complexity and robustness. It is easy to perform improvisation of the sounds because of its friendly user interfaces.  a24136700 (ISSN)