sfs-matlab - SFS Toolbox 2.5.0

New version of the Sound Field Synthesis Toolbox, for documentation see https://sfs-matlab.readthedocs.io/en/2.5.0.

NEWS: - Add voronoi interpolation for impulse responses - Fix phase offset of Linkwitz-Riley Allpass Filters - Add modal window to monochromatic NFC-HOA driving functions - Update equation links to https://sfs.rtfd.io/en/3.2/

- MATLAB
Published by hagenw over 7 years ago

sfs-matlab - SFS Toolbox 2.4.3

New version of the Sound Field Synthesis Toolbox, for documentation see http://matlab.sfstoolbox.org/en/2.4.3. This release fixes a small bug in local WFS.

NEWS: - fix bug where in LWFS-SBL, where inverse Allpass was inverted

- MATLAB
Published by hagenw over 7 years ago

sfs-matlab - SFS Toolbox 2.4.2

New version of the Sound Field Synthesis Toolbox, for documentation see http://matlab.sfstoolbox.org/en/2.4.2. This release fixes small bugs, removes obsolete local WFS functions and introduces optional logarithmic spacing of linear secondary sources.

NEWS: - extend signal_from_spectrum and spectrum_from_signal to N-dim matrices - remove obsolete *_localwfs functions - add optional logarithmic spacing for linear secondary sources

- MATLAB
Published by hagenw over 8 years ago

sfs-matlab - SFS Toolbox 2.4.1

New version of the Sound Field Synthesis Toolbox, for documentation see http://matlab.sfstoolbox.org/en/2.4.1. This release fixes small bugs and includes mono-frequent simulations of local Wave Field Synthesis (LWFS) using spatial bandwidth-limitation.

NEWS:

- add monochromatic implementation of LWFS using spatial bandwidth-limitation - add monochromatic circular expansion functions for ps and pw - add function for conversion from circular to plane wave expansion - add freq_response_* and time_response_* for all LWFS methods - add optional message arg to progress_bar() - fix missing conf.N in freq_response_nfchoa() - fix auralize_ir() for local files

- MATLAB
Published by hagenw almost 9 years ago

sfs-matlab - SFS Toolbox 2.4.0

New version of the Sound Field Synthesis Toolbox, for documentation see http://matlab.sfstoolbox.org/en/2.4.0. This release includes the following highlights:

• Switch the addressing of time from samples to seconds
• Fix the calculation of zeros of the spherical Bessel function for high orders as needed for NFC-HOA
• Local Wave Field Synthesis (LWFS) using spatial bandwidth-limitation
• max-rE, Tukey and Kaiser weighting to the modal window
• Point source and plane wave 3D NFC-HOA time domain driving functions

NEWS:

- improve references in SFS_config() - update structure of configuration for LWFS methods - fix off-center dummy head positions for HRTFs - add elevation to head orientation for binaural synthesis - fix sphbesselh_zeros() for high orders - fix symmetric ifft for Octave - add inverse Legendre transform - fix integral weights for spherical secondary sources - add 3D ps and pw driving functions for NFC-HOA - add 'reference_circle' as new default for focused sources in 2.5D - add max-rE and tukey modal weighting windows - add time-domain implementation of LWFS using spatial bandwidth-limitation - add circular expansion functions - fix incorporation of tapering weights for LWFS - remove x0 from interpolate_ir() call - fix interpolate_ir() for special cases - switch handling of time from samples to seconds - add freq_response_line_source() - add freq_response_point_source() - add time_response_line_source()

- MATLAB
Published by hagenw almost 9 years ago

sfs-matlab - SFS Toolbox 2.3.0

Several improvements to WFS and NFC-HOA driving functions and impulse response interpolation. For documentation of the SFS Toolbox, see http://matlab.sfstoolbox.org/.

NEWS:

- default 2D WFS focused source is now a line sink - improve point selection and interpolation of impulse responses - speed up Parks-McClellan resampling method - change default value of conf.usebandpass to false - rename conf.wfs.t0 to conf.t0 - rename and improve easyffft() to spectrum_from_signal() - rename and improve easyifft() to signal_from_spectrum() - correct amplitude values of WFS and NFC-HOA in time domain - fix default 2.5D WFS driving function in time domain - add time_response_point_source() - update amplitude and position of dirac in dummy_irs() - fix missing secondary source selection in ssr_brs_wfs() - add amplitude terms to WFS FIR pre-filter - fix Gauss-Legendre quadrature weights - add delay_offset as return value to NFC-HOA and ir funtions - fix handling of delay_offset in WFS time domain driving functions

- MATLAB
Published by hagenw over 9 years ago

sfs-matlab - SFS Toolbox 2.2.1

Bug fix release including improvements for the delayline, convolution and linear interpolation capabilities of the toolbox. For documentation of the SFS Toolbox, see http://matlab.sfstoolbox.org/.

NEWS:

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

- MATLAB
Published by hagenw almost 10 years ago

sfs-matlab - SFS Toolbox 2.2.0

New version including 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, and an update to the default WFS driving functions.

NEWS:

- 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

- MATLAB
Published by hagenw almost 10 years ago

sfs-matlab - SFS Toolbox 2.1.0

New version including several improvements for time-domain NFC-HOA simulations, new virtual line sources for WFS and NFC-HOA, the ability to set t=0 for time-domain simulations to the start of the virtual source, and as usual lots of small bug fixes.

NEWS:

- make conf struct mandatory - add new start message - fix handling of 0 in least squares fractional delays - fix NFC-HOA order for even loudspeaker numbers to N/2-1 - add conf.wfs.hpreFIRorder as new config option (was hard coded to 128 before) - speed up secondary source selection for WFS - rename chromajs colormap to yellowred - fix tapering_window() for non-continuous secondary sources - remove cubehelix colormap as it is part of Octave - add conf.wfs.t0 option with is useful, if you have more than one virtual source - virtual line sources are now available for monochromatic WFS and NFC-HOA - allow arbritrary orders for time-domain NFC-HOA simulations

- MATLAB
Published by hagenw over 10 years ago

sfs-matlab - SFS Toolbox 2.0.0

New version including SOFA file format support for impulse responses, usage of custom grids for sound field simulations, a 3D-plotting routine, and lots of small bug fixes.

NOTE: this version of the SFS Toolbox is no longer compatible with the old irs mat-file based file format for HRIRs and BRIRs. If you want still to use these one, you have to use SFS Toolbox 1.2.0, which is the latest version released using the old file format.

NEWS:

- add support for SOFA - add SOFA convention SimpleFreeFieldHRIR - add SOFA convention MultiSpeakerBRIR - calculate integration weights (x0(:,7)) of secondary sources based on their distances to their neighbours - add rounded-box as new loudspeaker array geometry - fix bugs in local sound field synthesis time domain implementation - speedup local sound field synthesis processing by fewer calls to delayline() - add heuristic to find a good local wave field synthesis pre-filter - loudspeaker geometry can now be read from a SOFA file - now custom grids can be used during sound field simulations - add 3D plot routine - change plot_sound_field(P,x,y,z) to plot_sound_field(P,X,Y,Z) - normalization of sound field now only happens in plot_sound_field(); this comes with the new config option conf.plot.normalisation - remove interaural_level_difference() and interaural_time_difference() - change default config setting conf.ir.usehcomp to false - lots of small bug fixes

- MATLAB
Published by hagenw over 10 years ago

sfs-matlab - SFS Toolbox 1.2.0

New version including a PDF documentation that derives all used driving functions, updated default color map for dB-plots and small bug fixes.

NEWS:

- add PDF documentation "Theory of Sound Field Synthesis" - fix remaining usegnuplot config entry - change default dB color map to chromajs - add missing hgls2 functionality (fractional delays) - add cubehelix and chromajs color maps - remove noise() function, use the one from the LTFAT Toolbox instead

- MATLAB
Published by hagenw about 11 years ago

sfs-matlab - SFS Toolbox 1.1.0

New version including local WFS and a lot of bug fixes.

NEWS:

- fix amplitude bug in get_ir() and ir_generic() - remove direct gnuplot plotting - add support for local Wave Field Synthesis - the length of the dirac impulse response is now an option for dummy_irs() - fix iseven(), isodd() for very large numbers - correct the sign for Wave Field Synthesis driving functions

- MATLAB
Published by hagenw about 11 years ago

sfs-matlab - SFS Toolbox 1.0.1

Bug fix release of SFS Toolbox 1.0

NEWS:

- rms() works now also with row vectors in order to be compatible with the Auditory Modeling Toolbox - fixed handling of number of secondary sources for a box shaped array - fixed a bug in ir_auralize() regarding the contentfile configuration - corrected NFC-HOA driving functions for off-center arrays

- MATLAB
Published by hagenw almost 12 years ago

sfs-matlab - SFS Toolbox 1.0.0

First complete 3D version of the SFS Toolbox.

NEWS:

- added references for all driving functions - streamlined nested conf settings; e.g. now it is no longer neccessary to set conf.ir.hcompfile if conf.usehcomp == false - added WFS driving functions from Völk et al. and Verheijen et al. - removed secondary_source_number() and xy_grid, because they are no longer needed - enabled pre-equalization filter of WFS as default in SFS_config_example() - fixed sound_field_mono_sdm_kx() - Green's function for line sources returns now real values - correct y-direction of plane waves for 3D NFC-HOA - updated the test functions in the validation folder - several small fixes

- MATLAB
Published by hagenw over 12 years ago

sfs-matlab - SFS Toolbox 1.0.0-beta2

Bug fix version of 3D release of Toolbox. Most probably the last beta release.

NEWS:

- rms() now works for arbitrary arrays - speedup of delayline() and HRTF extrapolation - delayline() now works with more than one channel - fixed a critical bug in wfs_preequalization() - fixed missing conf values in several functions - fixed README - changed location of sfs-data for automatic download, because github does not allow this - several minor fixes

- MATLAB
Published by hagenw over 12 years ago

sfs-matlab - SFS Toolbox 1.0.0-beta

New 3D version of the Toolbox. The Toolbox works now completely in the 3D space and comes with 2D, 2.5D and 3D driving functions for WFS, NFC-HOA and SDM.

NEWS:

- bandpass() can now handle arbritrary frequency limits - sphbesselh_zeros() comes now with precomputed zeros for an order up to 1000 - renamed wave_field_* functions to sound_field_* - the order for NFC-HOA can now be set manually via conf.nfchoa.order - several performance improvements - added missing driving functions for WFS and NFC-HOA - added convolution() which is faster than conv and can handle multidimensional signals - changed default plotting style of loudspeakers to conf.plot.realloudspeaker=false - hann_window() now uses (2*n+1) instead of (2*n) to generate the window - replaced the input parameter L by conf.secondary_sources.size - the aliasing frequency is now calculated by the mean distance between the given secondary sources - added nearest neighbour search and 3D interpolation to get_ir() - moved the tapering window into x0(:,7), added new function secondary_source_tapering to achieve this - added a seventh column to x0 which includes integrational weights - added extra directory for SSR renderer functions - added 3D HRTF extrapolation - changed array configuration to use number of secondary sources instead of distance between them - changed SFS_config to use substructs like conf.secondary_sources.* - added the possibility to calculate the wave field for a arbritrary positioned plane in 3D - added 3D WFS functions - make the Toolbox work in 3D, which brakes backwards compability! - now all monochromatic functions have a time_domain counterpart - reordered the argouts for the wave field functions; now P is always the first argout - automatically plotting of the wave fields if no argouts are wanted - changed direction of focused source from the conf.xref vector directly into xs. For a focused source xs is now [1x6]

- MATLAB
Published by hagenw almost 13 years ago

sfs-matlab - SFS Toolbox 0.2.5

Bug fixing release of the 2D version of the Toolbox. Note that this will be the last official release of the 2D Toolbox version.

NEWS:

- added IIR WFS pre-filter - fixed a bug causing the wrong loudspeaker position in the output of generic_wfs()

- MATLAB
Published by hagenw almost 13 years ago