# Manually write an audio file

I want to write an audio file (the particular format does not matter to me) by hand, i.e. for each frame I would write manually which frequencies are present at which intensity. How do I do this? Is there some specialized software for this?

• I can't flag (when I press 'Flag' it doesn't do anything)
– user34413
Oct 9 at 13:57
• it looks like you didn't take the time to actually register, so stack exchange has no idea the two posts are supposed to be the same person. I've no idea how you get round that. Oct 9 at 14:04
• It is not clear at all what you want to do. In it's current state, a valid solution to your problem (since you state that the file format is irrelevant) would be: 1. open a text editor, 2. enter numbers or letters representing "frequencies" and their "intensity" for each "frame", 3. save the file. I guess this is not what you intended. We are able to help if you describe exactly what you want to achieve. In which format are "frequencies" and their "intensity" available? Do you want to be able to play back this file in real time, or is it acceptable to read the entire file before playback? yesterday

You could try the following instructions and create a 5s file with a sine waveform : sox -n a.wav synth 5 sin 440