Can't Understand

[HsiangNianian]

So what do decimals in the output mean? Pitch?

[Possseidon]

Check out examples/4-event-signatures.lua. It's not 100% complete, but has descriptions (or at least sufficiently meaningful parameter names) for the basic midi events.

For your question in particular, noteOn has three parameters, namely channel, key and velocity.

• channel is a number between 0 and 15.
• key is the pitch (always an integer, that's just how midi works). You can check out this table for what they mean.
• velocity the one you weren't sure about. velocity here means how loud the note is.
  Basically 0.0 means the same as noteOff (and is often used interchangeably) and 1.0 means maximum volume.

Note that noteOff also has a velocity parameter, which will pretty much always be 0.0.

You can also take a look at this table that lists all the different midi events.

[HsiangNianian]

Check out examples/4-event-signatures.lua. It's not 100% complete, but has descriptions (or at least sufficiently meaningful parameter names) for the basic midi events.

For your question in particular, noteOn has three parameters, namely channel, key and velocity.

• channel is a number between 0 and 15.
• key is the pitch (always an integer, that's just how midi works). You can check out this table for what they mean.
• velocity the one you weren't sure about. velocity here means how loud the note is.
  Basically 0.0 means the same as noteOff (and is often used interchangeably) and 1.0 means maximum volume.

Note that noteOff also has a velocity parameter, which will pretty much always be 0.0.

You can also take a look at this table that lists all the different midi events.

我懂了！谢谢你！