https://github.com/markzhai/sound-generator-and-midi-simulator

Sound generator and midi simulator.
https://github.com/markzhai/sound-generator-and-midi-simulator

Last synced: about 1 hour ago
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Sound generator and midi simulator.

• Host: GitHub
• URL: https://github.com/markzhai/sound-generator-and-midi-simulator
• Owner: markzhai
• Created: 2014-02-06T16:18:49.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2014-02-06T16:20:54.000Z (almost 11 years ago)
• Last Synced: 2024-11-08T12:17:24.350Z (about 2 months ago)
• Homepage:
• Size: 863 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
CSIT5110_F2013_Assignment

=========

20146185 ZHAI Yifan	[email protected]

The third-from-last digit of my student id is 1, so i choose a movie theme - Rainman - Leaving Wallbrook On the Road by Hans Zimmer.

1. The start time is 0:12:00.

2. I have created 7 tracks for the music sequence, and used different

sound for each track. Since the white noise sounds good, I have not use that sound.

Channel 2, AccoustcBas

Channel 3, PanFlute

Channel 4, Elec Piano

Channel 5, Synth Bass

Channel 7, Vox

Channel 8, Tom Drum

Channel 9, Taiko

3. I calculate the duration as the interval between corresponding NoteOn and NoteOff. Since addSound() and postProcessingSound() all thinks the duration is 5 seconds, I add two new functions with a duration parameter.

4. I use different sounds to play different tracks. 

Note amplitude is calculated by using amp = map(note.vol, 0, 150, 0, 1.0).

5. After applyEcho(), the music sample would exceed maximum which causes clipping, so I use 'boost' algorithm on the whole music_sample[].

/////////////////////////////////////////////////////////////

I add a Channel class which takes a filename parameter for its construtor. It reads NoteOn and NoteOff from the file and generates an ArrayList to record all the notes.

I add a new addSound function which takes an additional parameter called duration, so that it can exactly simulate the NoteOff.

In the program, you can use

Channel channel = new Channel("PanFlute.txt");

to load a channel from the file.

For the startTime, you can use a method in Channel class like this

Note note = channel.getNextNote(noteTime);

You see that how easy it is in my program to add a channel and specify the start time.

I use the following code to specify the start time

......

float startTime = 12;

for (int i = 0; i < channelCount; ++i) {

......

It is convenient to change it to another value.

/////////////////////////////////////////////////////////////