User guide for check_audio
user guide for check_audio function in Matlab
check_audio.m is a Matlab function that is used to check, for every trial, that the participant said the correct target word or words. It allows the user to mark trials with incorrect words, no speech, or other issues as "bad" trials that will be omitted from the final data analysis.
Usage: run check_audio from the command line when in the current folder is the folder containing the data to be analyzed (there should be a data.mat and expt.mat files in this folder). You will be promoted to enter the starting trial. Trial 1 is the default, and hitting the 'return' key at the prompt will start the analysis at trial 1.
When the GUI launches, you will see 10 trials at a time. Each trial is shown in a separate box, with the trial number at the top of the box. Inside the box, the target word is shown in a large green button. Below that is the audio signal (waveform). At the bottom of each box is a button to play or replay that trial.
- To play all trials in a row: hit the 'play all' button or press the 'a' key. When you do this, the currently played trial will be highlighted in yellow.
- To play a single trial: hit the 'replay' button for that trial.
- To mark a trial as bad: hit the green box for that trial or press the number key (0-9) shown on the replay button. The box will turn red. Hit the box again to mark as a good trial. The color of the box will indicate whether the trial is good (green) or bad (red).
- To advance to the next set of trials, press the '>>' button or the right arrow key on the keyboard.
- To go to the previous set of trails, press the '<<' button or the left arrow key on the keyboard.
- To save your work, press the 'save' button or the 's' key.
- To close the GUI, press the 'exit' button or the 'e' key. You will be prompted to save your progress.