Allophone Plotter

Service “Allophone Plotter” allows to display the sound in graphic form. Using this service one has an opportunity to use allophones’ basis of online version text-to-speech synthesizer, select a specific allophone from the database and get its oscillogram – audio amplitude vs. time plot or spectrogram – plot of audio amplitude vs. time and frequency. Going to the service page (see Figure 1), the user can enter in the appropriate field the name of allophone, which graphical display he/she wants to get, or choose allophone from phonetic database in the drop-down menu.


Figure 1 – Interface of Allophone Plotter

When the user tries to get a spectrogram, he/she can choose its black-white or colourful view. After an allophone is chosen the user must press the button and wait until the service processes the information and generates the answer in html-page with the png-picture.

On Figure 2 you can see an oscillogram of the allophone “M002″. By the x-axis time changes are indicated, by the y-axis the amplitude of audio signal is shown.

AllophonePlotter_M002_Osc_2015-03-23Figure 2 – Oscillogram of the allophone “M002″

On Figure 3 a colorful spectrogram of the allophone “M002″ is presented. The plot looks like a two-dimensional colourful view of the signal, where time is indicated by the x-axis, frequency – by the y-axis, and the power of the signal is indicated by the colour intensity.

AllophonePlotter_M002_Spectr_2015-03-23Figure 3 – Spectrogram of the allophone “M002”

The service can be used by phoneticians, linguists, students of philological and pedagogical specializations or just by interested people while learning and studying the Belarusian language.

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