Example 1:

A star shaped peptide polymer comprising a multifunctional center with a plurality of terminal arms extending therefrom, wherein the terminal arms are statistical or random peptide copolymers of at least a cationic amino acid residue and a hydrophobic amino acid residue.
A star shaped polymer of claim 1, wherein the multifunctional centre is a dendrimer.
A star shaped copolymer of claim 2, wherein: the dendrimer comprises a dendrimer centre with a plurality of dendron arms extending therefrom, the dendron arms having a plurality of branches formed from repeat units, each branch terminated with a terminal unit having a terminal moiety; and wherein the plurality of terminal arms are each covalently bonded to terminal moieties of the dendrimer.
A star shaped peptide polymer according to claim 3, wherein the terminal moiety is a secondary amine with one terminal arm covalently bonded thereto.

Example 2:

An acoustical module comprising
- a receiver unit for generating audio sound,
- a plurality of microphone units for receiving acoustical pressure signals,
- a plurality of acoustical pressure pick-up points, each of said acoustical pressure pick-up points being acoustically connected to a microphone unit, and
- an acoustical filter for attenuating an acoustical pressure signal arriving at a first acoustical pressure pick-up point relative to a second acoustical pressure pick-up point.
- An acoustical module according to claim 1, wherein the acoustical filter is positioned between the first and the second acoustical pressure pick-up points.
- An acoustical module according to claim 1 or 2, wherein a first microphone unit is acoustically connected to the first acoustical pressure pick-up point, and wherein a second microphone unit is acoustically connected to the second acoustical pressure pick-up point.
Process for the preparation of cellulose fibers in which a solution of cellulose in tertiary amine oxide is shaped in hot for the production of filaments, the filaments are cooled and are then introduced into the precipitation bath to precipitate the dissolved cellulose, characterized by fact that the shaped solution is cooled by exposure to an essentially laminar gas stream before its introduction into the precipitation bath.
Process according to claim 1, characterized by the fact that the laminar gas stream is directed substantially at right angles to the filaments.