GENEVA, March 22 -- EARTHMOUNTAIN (SUZHOU) MICROELECTRONICS LTD. (201, Building 1, Changshu Riverside International Trade Centre, No. 99 Yongjia Road, Changshu Economic And Technological Development ZoneSuzhou, Jiangsu 215500), 地球山(苏州)微电子科技有限公司 (中国江苏省苏州市常熟经济技术开发区永嘉路99号常熟滨江国际贸易中心1幢201) filed a patent application (PCT/CN2024/138109) for "DIGITAL SOUND PRODUCTION METHOD AND DIGITAL SOUND PRODUCTION DEVICE" on Dec ...