# Sound Field Synthesis Toolbox 2.2.1 released

Since our last announcement here at spatialaudio.net, two new releases of the Sound Field Synthesis Toolbox for Matlab/Octave have happend. The highlights of the new versions include a new online documentation at http://matlab.sfstoolbox.org and a new online theory documentation at http://sfstoolbox.org, which is directly linked in the corresponding code sections. Other big changes include a switch to the MIT license, more fractional delay methods, a new linear interpolation method for HRTFs and an update to the default WFS driving functions.

Download the SFS Toolbox 2.2.1 and have a look at the online documentation how to use it.

NEWS (2.2.1)

- fix delayoffset for FIR fractional delay filter - add findconvexcone() - simplify convolution() - add linear interpolation working in the frequency domain - fix pm option for delayline() 

NEWS (2.2.0)

- fix impulse response interpolation for three points - add the ability to apply modal weighting window to NFC-HOA in time domain - change license to MIT - update delayline() config settings - add Lagrange and Thiran filters to delayline() - replace wavread and warwrite by audioread and savewav - convolution() excepts now two matrices as input - allow headphone compensation filter to be a one- or two-channel wav file - add new online doc at http://matlab.sfstoolbox.org/ - fix greens_function_mono() for plane wave and 3D - replace conf.ir.useoriglength by conf.ir.hrirpredelay - update default WFS driving functions - add links to equations in online theory at http://sfstoolbox.org 

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