Release Notes: The licensing of some files has been corrected. There are minor corrections and accuracy improvements.
Release Notes: A new method for the computation of the excess phase component inverse has been introduced. Sample configuration files for 48 KHz, 88.2 KHz, and 96 KHz sample rates have been added. The homomorphic deconvolution procedure has been improved to avoid any numerical instability. A new Piecewiswe Cubic Hemite Interpolating Polynomial (PCHIP) interpolation method, providing monotonic behaviour, has been introduced in the target response computation. All the interpolation and approximation procedures have been rewritten from scratch to provide better performance and accuracy.
Release Notes: A new feature for replacing command line parameters has been introduced. The dip and peak limiting procedures have been improved in order to avoid numerical instabilities. A new wavelet-based analysis graph has been added to the sample results. Many performance improvements have been introduced. A new optional parameter used to define the base directory for all files has been added.
Release Notes: Minor corrections and improvements have been applied to the documentation and to the pre-echo truncation inversion procedure. A new target transfer function definition procedure based on Uniform B Splines has been introduced. The development environment has been moved to Code::Blocks and GCC/MinGW.
Release Notes: A new prefiltering curve based on the bilinear transformation has been introduced. A new logarithmic interpolation has been added to the target transfer function computation. Small improvements to the documentation and to the Octave scripts used to generate the graphs have been applied. A new improved version of the measurejack script has been included in the package. Some new sample configuration files, including one approximating the ERB psychoacoustic scale, have been added. Some other minor bugs have been corrected.
Release Notes: This release features better handling of underflow problems during homomorphic deconvolutions. There were some speed improvements. Search and output of peak value and peak position were added to lsconv.
Release Notes: This release adds some tools for accurate time aligned impulse response measurement, making it possible to compensate for interchannel misalignment, to a limited extent. It also fixes some minor bugs.
Release Notes: The Takuya Ooura and GNU Scientific Library FFT routines have been included in the program. These routines are about 10 times faster than the previous routines, providing about the same accuracy.
Release Notes: This version adds a sharpness factor parameter to the sliding low pass prefiltering procedure, adds an option to read and write double precision floating point files, and adds some checks to warn when the input signal is too short to provide accurate results.
Release Notes: This release adds two parameters to control the gain-limiting procedures. These parameters control a sort of "soft clipping" of the frequency response, avoiding ringing on abrupt truncations. A new parameter to select the magnitude type of the target frequency response (either linear or expressed in dB) has been added. The ability to perform microphone compensation has also been added. The license has been switched to the GPL.