Abstract: The invention relates to a cover (1) for a cervical collar, said cover (1) comprising a tubular pouch comprising two openings (2l a,2b) for inserting the cervical collar (3) the tubular pouch (2) being designed so as to entirely cover the cervical collar (3) when the cervical collar (3) is inserted in the tubular pouch (2).

Abstract: Methods are presented for reducing the processing required for CELP speech encoders which have multiple fixed stochastic codebook subframes corresponding to a single adaptive codebook subframe. The search for the optimum excitation vector in the fixed stochastic codebook requires calculating terms involving correlation of the target speech sample and the fixed stochastic codebook excitation vector as well as energy terms involving only the fixed stochastic codebook excitation vector, and for this class of CELP encoders it is possible to simplify the calculations to reduce their complexity and to make advantageous use of an adaptive energy lookup table. In addition, linear interpolation may be employed to estimate values for the adaptive energy lookup table and further reduce the computational burden.