HISE Logo Forum
    • Categories
    • Register
    • Login

    Spectrum ballistic (display buffer)

    Scheduled Pinned Locked Moved Unsolved General Questions
    52 Posts 7 Posters 3.7k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Christoph HartC
      Christoph Hart @ustk
      last edited by Christoph Hart

      The problem with your snippet is that there is no synchronization between your slow Hisescript loop that creates the path and the audio thread that pushes new signals to the FFT - this is why I added the special createPath() method (that also tries to reduce the path points to optimize the drawing performance).

      If I use the ScriptRingBuffer.createPath() method the artifacts will disappear completely and I can render it with 30fps.

      HiseSnippet 2245.3ocyYEzaajaElx1TNRqSPVffhdbpwdPAvqxLxxN1cQajksksPrcDr75cMBVDPMCkDgmYn5LTwVcQ.ROz+.81dq+B58dK+E5Oidp6+fzGImQyLxRwxt6FTYaLhju2ie7wG+dONtU.2lFFxCP4Jb1nATTtUvsG4K5uaeByG0bOTteCtQiyLpOraWZfwdAjqX98L1.Uez.RXH0AkK2hGHkMWgkPpO+7KpSbI91zjtPny4La5QLOlHo2V0dIy0sAwgdFyKkzUq0zl6uK2kODv0hXSz.h8kjdzSHRwV.ixkeeGlfGzVPDzPTtkpycF0tO+Jes7myBYcboxFVn1fgzc2f65HQrrWzt8YtNshW+gHvJsR7FKp8FOAeLygMt+DuxiUCXjnQZ+QtExBuEy.OqzvyLE7lBjxkBRXMj9Rba6.1.QxHR77E3l9BZPWB31SCkSF5sGKbfKYjdGDPCN2BfSVaDzB+0Ew6xAU8Ek8HWRaD.MFapRVULMWyXSSym9MEAwB4tzx1tTRPInihvtTnv3sj.iVDepqkwevH1V8nhc4dC39PiRqpGdUPmDUBgcWaJnhJdSpPFf1VMboU03znw2qTun1RkcHBR4NJAMASns0MrQIIrSqw.hnuYJTZGPgcnVPux0S.smgzllv7DqVHUzB1yEmxGJX9zRcG5aKXb+R8dZwerXgdRAzQpkzOBKyCH98nf8fQcfyKJyK5yBSgg0LdM7G7qpe.2eGyQBhjNNjx50WT5o+.HV4MjKj2IW+oAl7TSvtDW2NvwiDjo.1ydlZk.q0jYNxeIs9ozP1el5D4lrLqTcMCKIjuEsHwpHksXA49XmtSSb0v5elXoCR2oaZOe7J9HtMwsNenuSHrwI8PkAGjUYsi5qsTdBym9MorZ.cfbyoTj2I10HHAZmSo0M0NsnOw9HCt+IbA8UQNqhuqnwjC0s6TGSF4DvccktfoLrdV+DJVxenWGZvZvQ.2gzwBBjOYoLvylxHMilsNPNkfb+l9LwqFP8mEOGJJ5G9121bOXeQxyD0GH2.ZffIgPt8nuEHs0rNEv6QCuTvGnjM5fMvCKTi9vXNI4F.hALOO.q2LPWmlWeT5FWIC4G2gweqVeUH+3dd+eoFJE82RZf.DubmgtDQV1XYJnnA.+cFJPIaleHSLJcJpewnnmWH9k3VLgc+oiwElBFgckeMvXThsGh2GNmZKR.3R3Fe+mgrX40yewnHFXNkS9J3Dd9IyecFAlEUdqbvR4VSn8uV.mJKiOU.DN662CHuiHc1KbvITwU7fKKsZnRo2z8ZU1EPXIuZCdvUj.mnSrgmwaQBfJOfbhgk5RbCoYy8cZcyImhc7cNk1iEBpbJTtTprQoUyZ9TyJ6z4Mp8.pMi3lbVEryOVzvXUsBGQ86I5u5u2XKqsqr1yd15Ud9laslb7ui46vuRtA.itZcWHsgGw2+PRP.KbUkH6AltC08TYJLPnWC8Y.bulRtX02gu.O+AkveaHsEkbInCYDHrx2DOPjgZCb5RCIBFpG5hCHddDnGKsEWMVaHKWrtGw6QBXh9dL6FAz+zNWCnSahhuC7EfCWtMk3hR7Dklh2Abefu9NpwjILFHS0DPgXAHxqTHwafK8TXKaMiNtb6KaCYSuIq+.cXecoDkr6CtZpa38I4P949jn0mlHPWFSuiIh.FvLigSS5Bs1MBcwmlhZaJaK4hZS8cTM9H7IZPq3yjxAshGLI8Rt7QqK.NhHlQ8oTHCRGdc90pTEOF2IUb6tcPpUeBQ3usFZtryivWMN99lV4w2zJOJxJscYNz.kMVAqJd6H9K8ugEt3C2AKbHaJVHJ26sXgu.qOiLMCLWKhkwNxyTYT9u+S+z+9EnHdOIm7BQeG1kzDvITgnyAlNYFJvRvw8xlncbc4WIS6yhxcALyp9ZwcGMnO2mYK6RKQbrzNdPsbh3.pCIgmQXtxjcvbyc.fgaPrgn5Qxp.kIHkEy.YinAksGmUJCtRRLHCukFI9Rh5fTX98TkkHuh3hxwUWqKZ1zliGZCW5TlaFcioOfVN0v2sYSt1coWGWO0D4nlrGncSeG50xzteMTjVRFF4wlwsfo5Xl+458Qrby.cL45wsqBsaKnCjrOx1.kpxokWV.BEkQOTJilOwn4wUxZ0BPGlR59TV9IfErL0erptsok0l.OykzqzdPs.Upr81lU2XyJUVu5VOeqMhtVpj.eH02dTLbJrzG+3yvHzaqgl05zJChxis1bFKzUTl23TYPIJi5n40GZMSe3A.Y6rM5R2lQkFYYbq9jvOwNwbYk7ppamDJIUpiPohvw3tcEYCseHl3SbGERKKG5ySXsJ+S5n5YB37R.a8+CH151Qbd8tp5UfjExqf8fm5WNxDHN8qc5VP+BYHBxc2i2zcMQ7V50wLWgppzksf6frf9vUyvykiBkvEaQfJuNmCUMpRhfxlCIOFpNQ7qd1ibye1iHDcuxa7+tm5dc657otc8CtKUMk5h1eU5KZ+U07HxR8xkGZvDTOXx+cX4q7oXEypaUrp41aVTdUghVat9VUKptt.J6kye+qm7x4n+nrTj4BoSTW1rv4Iw3b4DbVCeJbGUndJWZwIttRwCgZjfRYgm99EeIgERCJdV.SKbCHR6LvcdGWFOZ9JLL0RfkdIzrlGywwk1hCWkWEnGOwm8gvw4XhqG6e9Buzu17K9fZ8O127gPX+UUjN1voNxSEzKCTT2q51WYMqInWKj2z9zcN4f8MN5UHGZWxPWw4Sot1wtfGNeU1NKW.BMCW.pxs5Bd+4YcAHzuvtfCahRuTKLWkfmBPilXklFr0hlqB3KLNXmiOdmY3sQyJFA8yobFJeSZrt7sVs+rvYyZI378O4e7edwTvk51AZ7uLdu82cmK97bUQOhc.+M1QunEfo7Apd.RXe0+pmB3iksMrhuKiNiF3AYuw1Nt34oqSk6gNqeOzo58PmMtG5r48PmmeOzYqOoNx+qW6LTv8zYxgNZsuJKWtb66KeQcp2ZG5+B7.yn4C
      

      Edit: the second example you posted somehow creates the glitches with the createPath method too. I'll check again if I can spot something.

      Christoph HartC 1 Reply Last reply Reply Quote 0
      • Christoph HartC
        Christoph Hart @Christoph Hart
        last edited by

        Alright I think I solved it.

        The problem was indeed a multithreading issue, but not between reading and writing (this was already handled), but between reading into the buffer and then applying the FFT. The createPath() could be called between those steps and then you would get some glitch values (I could reproduce it very reliably in Debug mode with the 32768 sample size).

        I've fixed it now so it should not glitch anymore, but I might have to do a bit of profiling to find out whether the two threads wait on each other for too often.

        ustkU 2 Replies Last reply Reply Quote 5
        • ustkU
          ustk @Christoph Hart
          last edited by ustk

          @Christoph-Hart It's building at the moment so I'll test this right away.
          Your snippet using createPath() strangely crashes (before I could test the fix commit at least), but this might be because I was compiling at the same time, it's strange nonetheless...

          The reason I don't use createPath() is because I want to perform my own interpolation in order to smoothing out the blocky look of the path. I remember looking to add a smoothing option to the method and not succeeding, but I might try again since this would be way more efficient if made natively rather than in a paint routine...

          Can't help pressing F5 in the forum...

          1 Reply Last reply Reply Quote 0
          • ustkU
            ustk @Christoph Hart
            last edited by ustk

            @Christoph-Hart Nothing changed here

            • I still have the same glitch when using a readBuffer,
            • Hise still crashes after a few seconds to 1-2min with your snippet (so using createPath()) 🤔

            Screenshot 2022-12-15 at 18.59.23.png

            Can't help pressing F5 in the forum...

            Christoph HartC 1 Reply Last reply Reply Quote 0
            • Christoph HartC
              Christoph Hart @ustk
              last edited by

              I remember looking to add a smoothing option to the method and not succeeding, but I might try again since this would be way more efficient if made natively rather than in a paint routine...

              Yes, definitely. Painting a path with thousands of data points in a 30 Hz framerate is pushing the scripting engine a bit too much.

              I'll see if I can add a quick smoothing option but the createPath() function should be used definitely (we'll address that crash later).

              ustkU 1 Reply Last reply Reply Quote 0
              • ustkU
                ustk @Christoph Hart
                last edited by ustk

                @Christoph-Hart said in Spectrum ballistic (display buffer):

                Yes, definitely. Painting a path with thousands of data points in a 30 Hz framerate is pushing the scripting engine a bit too much.

                Only the number of pixels in a panel if downsampling, but still a native smoothing would be better for sure

                getReadBuffer is still needed, like for instance when making 3rd octave frequency bar graph or with other step values, you need to make a custom downsampling function.
                I'm just not sure createPath will answer all cases

                Can't help pressing F5 in the forum...

                Christoph HartC 1 Reply Last reply Reply Quote 1
                • Christoph HartC
                  Christoph Hart @ustk
                  last edited by

                  Alright, two early christmas presents for Greg:

                  1. I've changed the createPath() method (and the default FFT path rendering) to use quadratic curves for lower bins so the days of the ugly tetris visuals are over.
                  2. I've added a function copyReadBuffer that makes sure that there is no multithreading issue when using the readbuffer. So instead of calling getReadBuffer() you need to call copyReadBuffer() with a preallocated buffer object and then use this for further path calculations.

                  I needed to change two lines in your example to make it work with the new method (see the comments):

                  
                  // Create a buffer with the same length as the read buffer
                  reg buff0 = Buffer.create(Panel1.data.buffer0.getReadBuffer().length);
                  
                  // [..]
                  
                  Panel1.setTimerCallback(function()
                  {
                  	// use copyReadBuffer which uses the synchronisation locks
                  	// like createPath()
                  	this.data.buffer0.copyReadBuffer(buff0);
                  	
                          //  ... from then on it's the same
                  
                  DanHD ustkU 3 Replies Last reply Reply Quote 7
                  • DanHD
                    DanH @Christoph Hart
                    last edited by

                    @Christoph-Hart looks great thank you!

                    DHPlugins / DC Breaks | Artist / Producer / DJ / Developer
                    https://dhplugins.com/ | https://dcbreaks.com/
                    London, UK

                    lalalandsynthL 1 Reply Last reply Reply Quote 0
                    • lalalandsynthL
                      lalalandsynth @DanH
                      last edited by

                      @DanH Anyone have snippet for this so I can have a look?

                      https://lalalandaudio.com/

                      https://lalalandsynth.com/

                      https://www.facebook.com/lalalandsynth

                      https://www.facebook.com/lalalandsynth

                      DanHD 1 Reply Last reply Reply Quote 0
                      • DanHD
                        DanH @lalalandsynth
                        last edited by

                        @lalalandsynth the default analyser has changed so you should be able to load it up and see, unless you mean rolling your own curves

                        DHPlugins / DC Breaks | Artist / Producer / DJ / Developer
                        https://dhplugins.com/ | https://dcbreaks.com/
                        London, UK

                        1 Reply Last reply Reply Quote 1
                        • ustkU ustk has marked this topic as solved on
                        • ustkU
                          ustk @Christoph Hart
                          last edited by ustk

                          @Christoph-Hart I'm sorry to bring bad news the second day of the year, but unfortunately we're not done yet with our friend the buffer...

                          After a little while (about a minute on my system), the buffer Max/RMS value suddenly cranks up to burn its wings into the sun with a gain of several millions and an erratic spectrum:

                          Screenshot 2023-01-02 at 00.53.13.png
                          Screenshot 2023-01-02 at 00.59.08.png

                          This was expected instead:

                          Screenshot 2023-01-02 at 01.01.29.png
                          Screenshot 2023-01-02 at 01.01.15.png

                          I remember this was happening already before, so it doesn't seem to be related to the recent mods you've made.
                          Also the new copyReadBuffer method doesn't solve this and it happens even if you don't use it (I just put it in the snippet so we can see the buffer in the watchtable). The problem still happens even if you just call the createPath function so my guess is that it's happening way before at creation of the buffer maybe...

                          HiseSnippet 1581.3oc6Y0raaaDDdoroRjpMPRQO1CD4jLfCiniaZAJZiiksScarifkqQ.JJBVStRZgH2kkbkkUKBPA5k7Jja80nOD8TeQxaP6LbIEIkbbhEpSQPkNocmY14a94aVJp1QRWVbrLhXT63wgLhwJlcFKT8a0mxEj82gX7wlc3Ag9rVQLph0lp5S1dbHMNl4QLLV5wndF0Vlj740ObapOU3xx2hPNQxcYOgGvU461dqui66uG0icLOnf1at09tRQKoubHfokLaRBotCn8XGRQ0pXRLptqGWIi5n.3DSLVdao23N8kiDZ8OgGyO0mgKbHcfCRu8dReODw3tjV849dsyh8XBbJsyyDKoyDeh4AbO9j8yyH2JQfUtEEyGFUJCukJAOmhvqYA3cAPxn.jVVCoaa1wMhGpxkf34iL2WnXQcoPZuHTz5RpDujYKIngPYGPGv1KBVLwhFOnYy0s1rYy09x50gTerx5LZjULj+cYVekUR2fcOlZGdbnOc71C61kE0IQbi6ncg0dOy4Nf84l2lJX9Nf4YNFNfVxfPo.Vz3NZwnI5uY6QUT6Pn2pfItSZ3ZTFad.Rzv.zVCzY.Xij3Ih0y5TX8Ffh58SO0F4mAZ5QLpWpcqY6yD8T8QyyPWLS0FJ9pijCUbAqQ2gBWEWJZzas5+R8Z8r6B8xOx2ugtuM19TenoENAPTLF33tSDJinhdLsTuH5njHT0mGmmEV2p7ZDiaKGJ7ha3X2bs0sZZee3.dwTfDoRQsn99mBtOGkIfr7AB4iBYfBY5D0.u8DoK0O0kMSb4O.sINfmW25tN+Hh.LCqO1HVHldvxTs50t28r91gPoJVZMhYAmkE05LNajEW.gEyZDU41WQARfssc8ZEwgLbbgRQRkKMLyBREMRGlM1.8eVLZIEGJUrmlFr0eQcqoE0s6EJC61hj99Xo+BDq80kXXCwvfSYQqCcl9CYSTDnrkmCX9lmCTbLkqt4ufhRw9Bt5ogLwaZ3EIkw.e662eGnDiCOR2CzKjEo3HDL1gcFLIVOJol4Nr3AJYXhtoLSX3pJQ5pYCZvzNgCiStootDPNOeX8Wu03hKFw8fKGLLM9zJDReFuWeEt5XCbd+LyxfonRug9TU4Qq38IoBf7bo4Y3LKQLWMt38M+qMu8cEh21rMGZfuXLV4BvHTMtNvX5sTqZtKPVbU4.bYy8d16gqjL09udZmB3Sz4qXlekPIPb3vfRCnQJgA1YjdKkwKMyYWg3DkH1wx1f9Mho3yebD.90sN0W5NnC+mYyRIC0XaaTiFt8oBncMddXtUemSWNWd0ReeQuCnpHNPaLgbf9hyVonCyAUPBrdcSbM1vzgI7RV72vmTgNSRXfPmLgE39GxTijQCRpSoeGhEcQINII+7tm6Pf6ojiPFOOs8EJNI60V5ONruTvcwszZjgzGE.WEnxf62PiOlx8w98SfJYxgbCS3FAa.zUNT5AIGy8ntPRbbxCLBjFbvFzghS4mzoVBWkZVfiH6Y.0YD.NAICnvm.boBS0zMk3JfxUQep6GeBJEtAibBVaQfRvyDUuZJ9zpJicg6tQFNYF.GwrKHddwGJBZeOOav7Trfo2ACBgG67rB7tPOpG7jqIlmUzaSifGGVosu5jUv2OfKRC47wOGPOep8t0VcTrPjFUbTZmArQ5jPwcw7TUbPHiLyoPtbWu4Vy35W9WS65e+Uu5Ol00a8aA+4C0Ob6dQreZHS3NdJ++qCda9+0Ob1Pu4ULzWIw+VGgbExLmO4pm6AmcEy8OFlCcs4ZXdxaz02vrceZ7L9FuG5Z22USdRfKHrKPeWs.889K3uWU96kWGMu13ullNMaRVvcWvcS4larf69gB2sJxcWPdWPdmPNcVPd+Pg7diDx6B16+yYullc6pJyZW0jJn9iiY1nn+CXr3A+VYroAQUcR10mQm5WsuhY.91x0Rd2ihr+aHiJFUJEOkFWX79nyQe.WRmCBqskxAAzjW0yb8Feeu7hoBntQxm6peWaX96lI6.sLhj+JuZlGfqsbHmk8yBv2eT.2i+bWW70XdWGB4hsYi4vl6OG1r4bXymMG17f4vlOeNr4KtTav+UyGMTICzuWPXi16p4hF6Jv+ulDpD4e.Iz0bV
                          

                          Can't help pressing F5 in the forum...

                          1 Reply Last reply Reply Quote 0
                          • ustkU ustk has marked this topic as unsolved on
                          • ustkU
                            ustk @Christoph Hart
                            last edited by

                            @Christoph-Hart Apparently this isn't even related to the buffer, but to the oscillators that don't like to be stacked... Muting the last oscillator in the chain made the strangeness disappear... False alert confirmed? 🙄

                            Can't help pressing F5 in the forum...

                            1 Reply Last reply Reply Quote 0
                            • First post
                              Last post

                            9

                            Online

                            1.7k

                            Users

                            11.8k

                            Topics

                            103.2k

                            Posts