21 march 2024 :

  • all Google sync should be over now
  • modified color of centre channel in graphs
  • corrected L+C+R curve in S1 graph

2 march 2024 :

  • still some Google sync problems !

18 december 2023 :

  • now an automatic link to private folder is set for previous and new users in the Use-your-Drive plugin

17 december 2023 :

  • due to some Google sync problems (changed account and API mods),  upload folder was sometimes duplicated (ie recreating myfolder(1) when myfolder was already here), and so processing of files was sometimes done in wrong folder ! This has now been solved but it took some time to relink private folders to their owners.

5 november 2023 :

  • impulse responses sweepirL1, sweepirR1,… together with targetdrc.txt are exported  in the correction48/REW folder. This can help to simulate parametric equalisation in REW.

28 october 2023 :

  • solved a bug when audio file was only numbers with operations, ie 30-09-23 (name was calculated to -2 !)

11 september 2023 :

  • solved a cache problem when more than one user were uploading at same time, the destination folder could be the wrong one !
  • corrected PORC error : correction file was allways 4096taps at 48kHz (or 8192tpas at 96kHz) instead of correct value for choosen processor

17 august 2023 :

  • added MiniDSP Flex in the processor list : the bin correction files can be found into the 96kHz folder with 2042 taps (equivalent length is 1021 taps at 48kHz). Flex total FIR is 4096taps with a minimum of 6 taps per channel so max correction in stereo is 2042 taps per channel.

27 may 2023 :

  • added PORC Python Open Room Correction in minimal phase and for stereo systems. For 5.1, it will be added later.

26 avril 2023 :

  • preparing for PORC (Python Open Room Correction), a bug was introduced last week with microphone calibration, this has been solved today. Those who uploaded files within last days may reload to get correct results (differences are mainly in high frequencies). PORC should be ready in a few days but I don’t expect very different results from the actual DRC.
  • PRIVATE plan has been temporarly stopped due to some regex problems ;)

28 february 2023 :

  • corrected a bug that sometimes wrote “Valid Umik found” instead of channels count ! This avoided DRC calculation.

30 january 2023 :

  • added a PRIVATE plan
  • added Stripe for payment and donation

10 december 2022 :

  • correction on the Dolby Atmos Music target

19 november 2022 :

  • avoid showing some errors on server that could block process queue

15 november 2022 :

  • correction of a bug of calculation for bright and warm targets

05 november 2022 :

  • correction of larger time drifts, up to 2000ppm instead of 200ppm (Redbook max is 100ppm)
  • improved target calculation in case of non monotonic reverberation time

30 october 2022 :

  • adding few samples of silence at start of  minphase correction files so that Sox resampling works correctly

24 october 2022 :

  • resampling to other frequencies (44.1, 88.2 and 96kHz) are now of higher quality (Sox VHQ instead of HQ)

21 october 2022 :

  • new feature when adding SEPARATED, COMMON, IPC in studio/title to force different modes of correction. With no option, the HYBRID mode is used.

18 october 2022 :

  • added output of correction files at various frequencies (44.1, 48, 88.2 and 96kHz)

17 october 2022 :

  • bug fix : in p1 of graphs, the LR black curve was wrongly displayed on frequency scale. Seems that this bug was introduced on october 14th.
  • added a test feature to calculation of differential phase correction : add IPC in the Studio title and the phase correction will be separatly calculated in low frequencies

23 september 2022 :

  • modified hybrid correction for a better result with assymetrical setups where L and R have noticeable different responses in low frequencies (mean calculations are now in dB instead of voltages)

12 september 2022 :

  • added subfolders wav/bin/json/wav-stereo/REW into correction folder to separate correction formats
  • stereo correction wav file was two times right channel : corrected

24 august 2022 :

  • fixed : when choosing “none” in processor list, correction was not computed, even if “measure and correct” was choosen
  • added some new lftargets : 100,200,300,400,600
  • correction files min and lin hybrid are also available in stereo now

07 august 2022 :

  • fixed startup of program on server in case of unattended restart of computer

05 august 2022 :

  • fixed a recent bug that avoided use of the microphone calibration file

18 june 2022 :

  • forced an automatic restart/logon of the computing server in case of mains failure (this happened from time to time in the lasts weeks !)

09 june 2022 :

  • in some cases, when new files were uploaded while a file is processed, a “missing file” error could occur because some path was modified and could block the whole files queue ! A correction is done that, hopefully, should avoid this major problem.

06 may 2022 :

  • even less phase correction at lower frequencies by reducing window size

29 march 2022 :

  • improved linphase correction with less phase correction on bass frequencies (using shorter windows for phase calculation). Amplitude difference between linphase and minphase is also much reduced now in lower frequencies.

19 march 2022 :

  • correction of comparative delay which could be wrong when record had to be resampled

07 march 2022 :

  • changed table “List by model” : ordering of colums changed and score is now showed

05 march 2022 :

  • bug solved when a field contained ‘ or ” (quotation marks)

26 february 2022 :

  • solved a bug in NBD Narrow Bandwidth Deviation calculation for multichannel 5.1 : the resulting score was too low

7 february 2022 :

  • solved (hope so…) a very problematic bug : when a measurement was uploaded before another one was completed, the second one could be stucked and never completed

29 january 2022 :

  • better estimation of channels difference for correction level adjustment : level is now checked only above 200Hz (it was measured with B weighting before)

26 january 2022 :

  • a bug on correction level was introduced two days ago : solved

25 january 2022 :

  • much improved speed for conversion of IR to .json output files for Xilica and QSys

24 january 2022 :

  • a little improvement on correction in the highest frequencies

23 january 2022 :

  • added export of correction to .json format directly valid for QSys and Xilica Solaro
  • renamed LFtarget choices 0/3/6/9 to 100/103/106/109

21 january 2022 :

  • corrected a problem when a folder was deleted by user during the process
  • added 0/3/6/9 dB choices on LFtarget to improve low frequency response especially when the FIR filter has less than 3072 taps

13 january 2022 :

  • improved calculation of inter-channels level correction

12 january 2022 :

  • corrected bug in the “volume” and “distance” display on graph pages p0 and p1

11 january 2022 :

  • did a lot of code cleaning and some changes on various graphs

23 december 2021 :

  • within last month, there was a bug in the phase measurement where phase graphs scale was wrong and DRC linear phase correction was not optimised for phase (amplitude was fine)

20 december 2021 :

  • moved from Gnu Octave v5 to v6, and from Gnuplot graphics toolkit to qt toolkit : had to adapt many graph parameters
  • in p7, graph simulated “C6 step response after hybrid linphase correction” is wrong but i’m working on it

07 december 2021 :

  • changed range of spectrogram graphs S19 and S20 of p4 from 37dB to 30dB
  • modify steps plots in page p7 because of a bug in display

04 december 2021 :

  • changes in correction plots : added step responses before/after correction in page p7, corrected graphs in p8 depending on number of taps

05 november 2021 :

  • if for some reasons, the graphs are no calculated and shown, I’m working to give the user comprehensive reasons.

03 october 2021 :

  • I think that the Google problem and stucked graphs are solved but for now, you can only upload one file in a Studio at a given date.

23 september 2021 :

  • a real bug that sometimes avoided calculation of graphs was due to inconsistencies between Google sync and the Windows shell : sometimes the shell did not update changes. A bypass has been found and I hope it completely solves the problem.

17 september 2021 :

  • added “Dolby Atmos Music” as a new option for the target

10 september 2021 :

  • changed target .txt file to target.drc because the .txt could in certain cases be erroneously used as mic correction file

21 august 2021 :

  • improved compensation of player and recorder clocks
  • target files are now exported in “My measurements” folder so one can use the target with other softwares

03 june 2021 :

  • added mismatch compensation of player and recorder clocks (only use LA2v3 files for now)

20 may 2021 :

  • .json correction files are reformatted so to be used directly by QSys and Xilica processors

18 may 2021 :

  • Changed centering of response on S1 of page 1 because mic cal is now included. Centering is only calculated under 11.5khz so it should not change a lot but it may slightly change performance values.

17 may 2021 :

  • Changed page 6 (p6) validity test to page 0 (p0) with eventually error messages. This p0 is plotted even if record is not valid.

12 may 2021 :

  • Changes in crosscorrelation should solve some rare cases when sync signal was missed and analysis was skipped.

09 may 2021 :

  • solved :) a vicious bug that appeared only when target at some frequencies had decimals
  • solved : in some cases, room volume and distance were not shown on graph p1

08 may 2021 :

  • no more crash due to : mic cal files with phase, non monotonic cal files or cal files with blank lines

07 may 2021 :

  • solved some login problems due to SSL with not secured content (such as new images from new measurements)

05 may 2021 :

  • there were many problems when sending wrong files  (ie not conform calibration files, more than one recorded file at same time,…) so I’ve be trying to avoid that workflow gets stuck and no user gets his files !
  • some badly formatted calibration files are automatically replaced by flat response in process

25 april 2021 :

  • added “noenhanced” mod in gnu octave script to avoid characters enhancements with _ in names

22 april 2021 :

  • in case of no mic cal file, the response could have a 10dB shift : corrected
  • recording files are now accepted in stereo for .wav, .flac and .aiff

21 april 2021 :

  • added pages “Howto” and “Graphs explained”

15 april 2021 :

  • slightly changed some parameters in the delay of lin phase correction
  • cleaning of parameters of the upload form (recording, microphone cal,..) to get rid of problems that could avoid the process of the uploaded files

10 april 2021 :

  • improvements in accepted mic calibration files, ie last line can now be blank

9 april 2021 :

  • changed conditions for distance : now accept both “.” and “,” before decimals, max 4 characters instead of 3
  • if files are uploaded with a non valid form, blank fields are filled with default values in the calculation software

7 april 2021 :

  • correction of graphs S13 and S14 various gatings, that had an error with mic correction

31 march 2021 :

  • corrections for SMPTE, AES, B&K have been added for 5.1

30 march 2021 :

  • changes in LF target : in Auto Music mode, the real target being L+R, its value is set at +3dB above the choosen LFtarget. Also changed LFtarget values in form.

27 march 2021 :

  • modifications of performance rating calculation

23 march 2021 :

  • added B&K as target in the Upload Recording form

19 march 2021 :

  • bug correction : in some cases, measurements and/or correction files were L/R unbalanced by a few dB

13 march 2021 :

  • changed some “correction” graphs (with y axis +-18dB instead of +-9dB) so to better cope for various measurements and also, for clarification, deleted some graphs

08 march 2021 :

  • changes in the measurements list, down on page “Measurements” which was resetted to blank when starting new software version !
  • improvements in page 1 of graphs so that responses are better centered to 0dB

06 march 2021 :

  • changed some LF targets : you need to fill again this field in the form when uploading in same studio/reference
  • correction of some bugs