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如果有人告诉你,一张普通12厘米的CD上能够容纳近二百首完整的音乐作品(以平均每首5分钟计,连续放音时间将达到16个小时以上,即相当于十几张普通的CD唱片)——你相信吗? 从理论上讲,这种“唱片”的格式属ISO/MPEG音频编码,利用新颖高效的“PERCEPTUAL压缩方案”对数据进行“三重压缩”及增益,其最大压缩比竟然能够达到1:12,更重要、更可贵的是在这一前提下,重放时得到的音质仍然能够保持原滋原味,也就是通常所说的44.1KHz的“CD音乐”,实在令人惊叹。仔细分析一下,你会发现,盘片上每个文件的尺寸大约在3到4兆之间
If someone tells you that a regular 12 cm CD can hold nearly 200 complete pieces of music (with an average of 5 minutes each, continuous playback time will reach 16 hours or more, which is equivalent to a dozen ordinary CDs) -Do you believe it? In theory, the format of this “record” is ISO / MPEG audio coding, which uses the new and highly efficient “PERCEPTUAL compression scheme” to “triple compress” and gain data to its maximum Compression ratio even able to achieve 1:12, more important, more valuable is that under this premise, the quality of the playback can still get the original flavor, which is commonly referred to as 44.1KHz “CD music”, in fact Amazing. Careful analysis, you will find that the size of each file on the disc about 3 to 4 trillion