LÖVE

Posted: **Tue Aug 21, 2012 8:03 am**

I've got this code to generate notes:

local notes = {}

notes.a4 = 440
notes.diff = (2^(1/12))
notes[49] = notes.a4
for i = 48, 1, -1 do
	notes[i] = notes[i+1]*notes.diff
end

for i = 50, 88 do
	notes[i] = notes[i-1]*notes.diff
end

notes.soundDatas = {}
for i, v in ipairs(notes) do
	notes.soundDatas[i] = love.sound.newSoundData( 22050, 44100, 16, 1)
	for s = 1, 22050 do
		local sin = math.sin(s/((44100/v)/math.pi*2))
		notes.soundDatas[i]:setSample(i, sin)
	end
end

notes.sources = {}
for i, v in ipairs(notes.soundDatas) do
	notes.sources[i] = love.audio.newSource(v)
end

return notes

The problem is that I played every source, but it only plays a very short noise, then there's only silence. What am I doing wrong?

Posted: **Tue Aug 21, 2012 11:06 am**

Add this to your new audio source: setLooping( true )

Posted: **Tue Aug 21, 2012 11:10 am**

That's not the problem, the notes are half a second long... Anyway I tried, just to be sure, and the only result I achieved is a short looping noise

Posted: **Tue Aug 21, 2012 12:04 pm**

The samples you set with setSample actually start at 0. The code maps it more or less directly to the array.

New SoundData are uninitialized and may contain random data.

~~You always set sample 1.~~ You always set the the sample with the index of the SoundData (the variable 'i').

Code: Select all

for i, v in ipairs(notes) do
   notes.soundDatas[i] = love.sound.newSoundData( 22050, 44100, 16, 1)
   for s = 0, 22050-1 do
      local sin = math.sin(s/((44100/v)/math.pi*2))
      notes.soundDatas[i]:setSample(s, sin)
   end
end

Posted: **Tue Aug 21, 2012 12:09 pm**

Oh, that's quite a stupid error ^^'
Thanks Boolsheet (a sheet made out of trues and falses? ok, ignore it)

LÖVE

Generating simple notes (sine wave) using LÖVE

Generating simple notes (sine wave) using LÖVE

Re: Generating simple notes (sine wave) using LÖVE

Re: Generating simple notes (sine wave) using LÖVE

Re: Generating simple notes (sine wave) using LÖVE

Re: Generating simple notes (sine wave) using LÖVE