| 摘要 |
<p>A data reproduction device is provided that can achieve seamless reproduction of a stream even at the switching positions of the validity of the bandwidth extension function even in the case where the validity of the bandwidth extension function is switched in the stream. A data reproduction device (2000) includes: an input frequency obtainment unit (2001) which analyzes header information Hdr and obtains an input frequency FSin which is the frequency of basic data; an output frequency determination unit (2002) which performs predetermined processing based on the input frequency FSin and determines an output frequency FSout which is the sampling frequency of a decoded frame Fdata; and a decoding unit (2003) which, if the SBR function is valid in a frame to be decoded, decodes sample data at the input frequency FSin and extends the bandwidth of the sampling frequency up to the output frequency FSout through the SBR processing on the decoding result, while if the SBR function is not valid in the frame, upsamples the decoding result obtained at the input frequency FSin to the output frequency FSout.</p> |
