I have noticed with Synthesia, that notes mapped to instruments different from the MIDI files default tracks will play very off-key a lot. Some notes that are moderately high on lets say, a flute will play at an earsplitting pitch, while others on other instruments will play at lower pitches than they should.
I am using macOS 12.5 with an M1 iMac, so maybe the bass included in the speakers has something to do with it, or maybe the CrystalVoice synth included within the app?
The game version is Synthesia 10.9.5890
Whats worse with macOS (certain version after 10.6), is that you cannot change the synth file to a better, higher quality synth, so you're stuck with a lousy toy-like 2MB of instruments, which is annoying at times
I think with Synthesia 11, maybe we could finally get what Windows users have - SF2 support. I am reporting this sound-related bug to you so we can have it fixed hopefully.
Synthesia playing notes wrongly (off-key)
When describing problems, always mention your OS and game version (shown at the bottom of the title screen).
If your keyboard has USB or MIDI ports, there is a tremendously high chance (>99%) it will work with Synthesia. See what you'll need on the keyboards page.
If your keyboard has USB or MIDI ports, there is a tremendously high chance (>99%) it will work with Synthesia. See what you'll need on the keyboards page.