| 摘要 |
The invention relates to a device for changing a sampling rate, comprising a forward transformer for forming a first version of a spectogram by means of a transformation with a first transformation length from an information signal, which has a first sampling rate. The device comprises a processor for forming a second version of the spectogram, which has a smaller bandwidth in relation to the first version. The device comprises a reverse transformer for forming a roughly pre-changed information signal having a first sampling rate that is reduced in relation to the first sampling rate, by means of a reverse transformation of the second version of the spectogram with a second transformation length that is reduced in relation to the first transformation length. The device comprises a time domain interpolator for obtaining an information signal having a third sampling rate, which is changed in relation to the second sampling rate, by means of interpolation of the pre-changed information signal. |
