鸟鸣在不同频率时的幅度分布一频谱 13129 Samples 103 Sound Bird chirps 100 Display Spectrum 103 Play Sound 10￥ 106 Info 10 1000 2000 3000 4000 5000 Frequency in Hertz Close Volume 0 1000 2000 3000 4000 5000 10 -8 10 -6 10 -4 10 -2 10 0 10 2 13129 Samples Frequency in Hertz