公开(公告)号：US20080232456A1

公开(公告)日：2008-09-25

申请号：US12040200

申请日：2008-02-29

申请人： Yoshihiro TERASHIMA ,  Yoshiteru TSUCHINAGA

发明人： Yoshihiro TERASHIMA ,  Yoshiteru TSUCHINAGA

IPC分类号： H04B1/66

CPC分类号： G10L19/24

摘要： An encoding apparatus holds predetermined encoding conditions (sets of a sampling frequency and a bit rate) associated with predetermined ranges having consecutive possible amounts of free space in the storage 20. A set of a sampling frequency and a bit rate associated with a range corresponding to a current free capacity is selected, and sound data included in a music file generated from an original digital signal data is encoded under the encoding condition by using a predetermined encoding software. By comparing sound data restored from the encoded data and sound data included in a music file, evaluation value is calculated with an evaluation method such as PEAQ, and it is determined whether the evaluation value exceeds a threshold value. The encoded data is stored in the storage when the evaluation value exceeds the threshold value.

摘要翻译： 编码装置保持与存储器20中具有连续可能的可用空间量的预定范围相关联的预定编码条件（采样频率和比特率的集合）。 选择与对应于当前可用容量的范围相关联的采样频率和比特率的集合，并且包括在从原始数字信号数据生成的音乐文件中的声音数据在编码条件下通过使用预定的编码软件 。 通过比较从编码数据中恢复的声音数据和包含在音乐文件中的声音数据，通过诸如PEAQ的评估方法来计算评估值，并且确定评估值是否超过阈值。 当评估值超过阈值时，编码数据被存储在存储器中。