Accuracy of saved waveform

Hello,

I’m saving the peaks as JSON -

wavesurfer.on('waveform-ready', function () {
            container.children('.loader').css('width', '0%');
            container.css('background-image', 'none');

            // cache Waveform
            var length = 500;
            var start = 0;
            var end = 500;

            // save Peaks if not exist
            if (!peaks) {

              // save Peaks
              // savePeaks(fileId, wavesurfer.backend.getPeaks(length, start, end));

              // PCM
              var pcmData = wavesurfer.exportPCM(length, 4000, true, start);
              savePeaks(fileId, JSON.parse(pcmData));

            }

          });

Unfortunately the saved waveform is not as accurate as the one which is generated on the fly - look here:

https://imgur.com/a/RyBVtsS

How ca this be fixed ? There seems to be no parameter ?

Please make sure you provide the following information (if applicable):

Wavesurfer.js version(s):

wavesurfer.js 2.0.5

Browser version(s):

all

[Pkmmte]

Year 2021 here. Still looking for a solution…

[webaschtl]

Hmm, having the same problem – in the year 2020 😉

Therefore exportPCM still works not as it should be?! Or do you found a solution, @peerfischer?

Thanks a lot – two years after…