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MEAWS (Musician Evaluation and AWdition for Strings) is an open-source program to help amateur musicians and music students. There are currently two practice modes: rhythms (for all musicians) and violin intonation.
Google code project (including SVN repository)
MEAWS rhythm mode. The lower red lines show when the user clapped; the upper black lines show where the user should have clapped.
MEAWS violin intonation mode. The color and direction of the bars indicates jhe type of error: a lower blue box means that the user played too flat, an upper magenta box means that the user played too high, while a green box in both directions means that the user was inconsistent (both too high and too low). The size of the box indicates the amount of error.
ctrl-n(on Apple MacOS X, press
ctrl). You may also find these commands in the menus (User | New User).
ctrl-g(or menu Exercise | Open Game). Choose Rhythm or Intonation.
spaceto start recording. The first exercise is very simple; this is so that you can test your recording ability. You may need to turn the microphone input volume up or down.
spaceagain to stop recording.
enter. A new exercise will be displayed, unless you failed to pass level 0 (passing grade is 80%), in which case the same exercise will be shown.
d(or select menu Try | Delete Try).
Summary of the above commands:
|Create new user|
|Open new game (choose rhythm or intonation)|
|Delete current attempt|
|Accept score and move on to new exercise|
No detailed explanation here; the best advice I can give is to just try stuff. You won't break anything! :)
|Play recorded audio from that Try|
|Modify user info (personal data, metronome options, audio analysis settings)|
|Open single exercise (choose rhythm or intonation, then choose exercise file)|
|Exercise | Set tempo||Modify metronome tempo|
|Create new attempt, keeping the current one (so you can compare different versions)|
|Open Try||Open a pre-recorded audio file to analyze|
Many of these options are currently useless, and are aimed at a future version/study of MEAWS (where we do things like tracking user info). Only the options which affect program usage will be discussed here.
space. If you still think that your score was too low, fill out the feedback form. :)
To investigate more, double-click on the main display. A new window will pop up, which should look similar to one of these two displays:
The black lines indicate the volume, and time moves from left to right. MEAWS looks for peaks that are above the dotted blue line (the minimum clap volume) and which are a certain distance away from a previously-detected clap. Detected claps are indicated with red lines.
The red somewhat-wavy lines indicate the detected pitches. Blue vertical lines indicate the detected boundaries between notes (i.e. grouping pitches into notes), and blue horizontal lines indicate the expected pitch for that note.
Nobody's actually asked this, but I can hope. :)
From Jan 2009 - May 2009 I'll be doing research at NUS. In Sep 2009 I'll be starting a PhD, quite possibly on MEAWS (adding new exercise types, tracking user improvement, redesigning exercises, doing psych experiments to show that my grading scheme is valid (or not!), etc... it really depends on where I am, who I'm studying with, etc).
This leaves 3 months in the Summer during which I could be adding your features or fixing bugs in MEAWS. Since MEAWS is open-source, there's nothing stopping you from making these modifications yourself, or hiring somebody else to make them for you... but since I'm already familiar with the system, I can probably do it cheaper.