Neural Mix Pro 2.0.2 export has artifacts that don't exist in realtime playback

Bug Reports
1
  • Device model: MBP 16" M1 Pro
  • Version of operating system: macOS 15.1
  • Version of djay/Neural Mix: 5.2.5/2.0.2
  • Hardware/controllers used: n/a

Summary of the issue:
When I export instrumentals, artifacts from the vocals are included that don’t exist if I playback the instrumentals in realtime in both djay and Neural Mix. Likewise, the vocals extracted lose some of the vocals, but during real-time playback, the vocals sound great. This was not the case when I initially installed 2.0.2 with macOS 15.0. I can’t pinpoint the timing, but it may have started after installing macOS 15.1.

How to reproduce the issue:
Compare an instrumentals export to real-time playback of the isolated instrumentals stem.

2

Hi @philfnyc, thanks for the details about your setup and the issue. Can you please try to capture a video of the issue, upload it to your Google Drive/Dropbox, enable sharing permissions, then share a link to the video here? Thanks!

4

Hi. I uploaded the screen capture video: Neural Mix Pro 2.0.2 Screen Capture for bug report.mp4 - Google Drive. Thanks.

5

Sorry don’t want to hi-jack the thread.
Just ask a quick question : is Neural Mix Pro also a standalone software, independent from Djay Pro ?

6

Hi @Davidv100, yes this is a separate stand alone app:

7

Hi @philfnyc, thanks for the video, but it doesn’t seem to include the results of the Acapella and Instrumental export. Please also share these results for comparison. Thanks!

8

Hi. I updated the video. It has five sections:

  • Audio as recorded
  • Vocals/acapella in Real-time
  • Vocals/acapella via Export
  • Instrumentals in Real-time
  • Instrumentals via Export

Each section covers the same part of the song (starting at 2m49s) for comparison purposes.

9

Thanks for the updated video @philfnyc. This is super helpful. I’ve passed this onto our engineering team for further review and will report back when I have news.

11

Hi @philfnyc, the engineering team was not able to replicate this. Can you please share the exact song file you are having issues with so we can test it directly? Please upload the song to your Google Drive/Dropbox, enable sharing permissions, then share a link to the song here. Thanks!

12

Hi, I saved a trimmed version of the track. It includes 40 seconds of the track and is the same part of the song from my screen capture. I also included the a cappella and instrumental extract files. All 3 files are compressed into one zip file located here.

13

Thanks @philfnyc, this is very helpful. I have forwarded this to the engineering team to see if they can reproduce the issue and offer any suggestions. I’ll report back here when I have news. Thanks!

14

Hi @philfnyc, engineering was able to reproduce this bug; it’s caused by the file’s high sample rate (96k). While we resolve it you can try converting your file to a lower sample rate (44.1kHz for best results). I hope that helps. Thanks!

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