[{"title":"( 2 个子文件 12KB ) 声音库:10 个纯音(250 Hz、500 Hz、1 kHz、2 kHz、3 kHz、3.5 kHz、4 kHz、6 kHz、8 kHz、10 kHz)分层不同频段噪声-matlab开发","children":[{"title":"upload.zip <span style='color:#111;'> 3.27KB </span>","children":null,"spread":false},{"title":"upload.mltbx <span style='color:#111;'> 9.97KB </span>","children":null,"spread":false}],"spread":true}]