Progress Senior Project - 12/9/2009

Today I just work more for my MIDI part. Now my program can play different patch sound. This Example is the sound of flute and xylophone, it can play simultaneously. This song is combining of 2 different song for show that it can play 2 line in 1 track.

I think, before new year we just waiting for OCR part from my friend. T T

Example song: http://www.4shared.com/file/168766436/4477375d/remix.html

GM sound patch :http://www.midi.org/techspecs/gm1sound.php

Progress Senior Project - 12/5/2009

Today I just made my song can play rhythm and melody simultaneously. I use melody as channel 0 and the drum as channel 9

Mary has a little lamp <<<[listen]>>>

I still have some problem about this, because the rest sign (-) need to play the previous note continuously but I can't make it yet.

Laodungdern <<<[listen]>>>

Next, I need the soundbank of Thai flute. My senior friend said he has one, so my next problem is how can I use it properly. If someone know the method, please tell me. I hope I can finish this part within new year... (_/|\_ สาธุ)

Progress Senior Project - 12/1/2009

This week, we seperate the work into 2 part. First the OCR thing, I let my friend take care of it and second is MIDI.

Today, I just write program to generate the sound, that's Marry have a little lamp. You know what, I heard that Thomas Edison made the first recording of the human voice in 1877 with this song. I don't know why I selected this song but when I work with the sound or playing music, I always start with this song. By the way, next I'm going to make the song able to have the rest sign (-) and then make the rhythm. Actually, I think I already done this part but my problem is how to use the Thai sound bank. I hope I can finish this part within this weekend. So let see the flow...

Oh! we forgot to tell you that we decided to work with Python because I already learn about image processing by using Python. For making python can work with midi, I use midipython library (link http://www.mxm.dk/products/public/pythonmidi) and for image processing, I use openCV library (link http://opencv.willowgarage.com/wiki/).

As I tell you on the Progress report last month, after we have the music characters then we make sound from it. Midi represent the sound by the number and sequence like

• midi.note_on(channel=0, note=do)

So to make the sound we have to define the number of note (from ลฺ till ซํ)

• a3=57 (ลฺ)
• b3=59 (ทฺ)
• c3=60 (ด)
• d3=62 (ร)
• e3=64 (ม)
• f3=65 (ฟ)
• g3=67 (ซ)
• a4=69 (ล)
• b4=71 (ท)
• c4=72 (ดํ)
• d4=74 (รํ)
• e4=76 (มํ)
• f4=77 (ฟํ)
• g4=79 (ซํ)

Then we make the event for the song and generate into sound.

• midi.update_time(time)
  midi.note_on(channel, note)
  midi.update_time(time+sequence)
  midi.note_off(channel, note)

Sound easy, isn't it? I think so but the important point of this project is OCR. Now we just work on blob coloring. I hope that we can recognize the character soon.

Now I feel like I have done a little bit farther. ^^ And oh! this is my first MIDI song -> http://www.mediafire.com/?iymjnwzjncz I hope it would be better next time.