[fluid-dev] Wrong sound pitches with sample rate 48kHz

[Reinhold Hoffmann]

Hi,

 

After moving from fluidsynth 2.0.5 to fluidsynth 2.1.0 we encountered a major issue with sample rate 48kHz. The sounds do not meet the required pitches.

 

Example: When using the sample rate 48kHz a note-on event with note A (440 Hz) sounds as note Bb (~ 466 Hz). Using the sample rate 44.1kHz in the same environment gives the correct pitches. The issue exists for every used soundfont file and for the two drivers which we use (DSound, ASIO through portaudio). With fluidsynth 2.0.5 all is ok. Therefore I conclude that the issue came in between 2.0.5 and 2.1.0.

 

The fluidsynth x64 libraries are built with Windows Visual Studio. The officially available binary Windows libraries (fluidsynth-2.1.0-win64.zip) from https://github.com/FluidSynth/fluidsynth/releases/tag/v2.1.0 show the same problem.

 

I have attached a simple MIDI file with a note-on event of note A. May be somebody can check the issue when using a sample rate of 48kHz.

 

Help and/or advices are highly appreciated.

 

Thanks

 

Regards,

 

Reinhold

 

Note-A.MID
Description: audio/mid