CPC G10L 19/12 (2013.01) [G10L 19/06 (2013.01); G10L 19/167 (2013.01); G10L 19/173 (2013.01); G10L 19/24 (2013.01); G10L 19/26 (2013.01); G10L 25/06 (2013.01); G10L 19/07 (2013.01); G10L 21/038 (2013.01); G10L 2019/0002 (2013.01); G10L 2019/0004 (2013.01); G10L 2019/0016 (2013.01)] | 6 Claims |
1. A method for interpolating LP filter parameters in a current sound signal processing frame following a previous sound signal processing frame, the previous frame using an internal sampling rate S1 and the current frame using an internal sampling rate S2 and defining a number of subframes, comprising:
providing LP filter parameters from the previous frame at the internal sampling rate S1;
providing LP filter parameters from the current frame at the internal sampling rate S2;
converting the LP filter parameters from the previous frame from the internal sampling rate S1 to the internal sampling rate S2;
transforming the LP filter parameters to a quantization and interpolation domain; and
computing LP filter parameters of at least one of the subframes of the current frame using a weighted sum of the LP filter parameters from the current frame at the internal sampling rate S2 and the LP filter parameters from the previous frame at the internal sampling rate S2.
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