Aligning Audio and EGG: Polarity and DelayNote: All terms appearing in bold letters are found in the VoceVista displays.An essential step toward a coordinated analysis of the mic and EGG signals is to align the two signals in time so that
The electroglottograph sends a minute high-frequency electric current between the two electrodes. The variations in resistance as the glottis opens and closes (resistance is less when there is no gap between the vocal folds) are the basis for the EGG
Please note that only the manufacturer should remove or replace the battery. Do not expose your EGG to liquid or moisture or to high humidity. Do not expose your EGG to extreme high or low temperatures. Do not expose your
Charge the battery: The first time you charge the battery takes approximately 16 hours to ensure that the battery is completed charged. Plug the charger into the Charge input of the EGG and make sure the on/off switch on the EGG
VoceVista PC with processor of at least 133 MHz, 16 MB RAM, Windows 95 or above. Apple computer running Windows through Bootcamp or a virtual machine such as Parallels Electroglottograph (EGG) External soundcard
The display in the left panels of Figures 1, 3, 4, & 5 is the spectrogram of the microphone signal. This display provides a framework that locates the power spectrum and waveform displays within the sound as it is perceived.
One of the displays of VoceVista (Figure 4, below) shows the waveforms during a short segment of time: above, the microphone (audio) signal, and below, the electroglottograph (EGG), which allows one to follow the pattern of vocal fold contact in
Once one has become familiar with typical resonance patterns in a variety of voices, it is generally possible to interpret the ‘resonance strategies’ used by singers from the sung sound alone, even without having a vocal fry spectrum for comparison.
The power spectrum displays the components of a sound with respect to frequency (x-axis, from zero up to 10 kHz) and relative intensity (y-axis). Voiced sounds are harmonic, having a fundamental and overtones. The individual harmonics, all of which are
Setting up your Mac to run VV requires some basic configuration procedures in both the Mac and Windows operating systems. Here is a brief overview of the process with detailed procedures in the sections that follow. Determine that your computer