While Sonneta's interface is clean and simple, many advanced features are available for those who need them.



When you view a waveform for a recording, you have the option to also see a spectrogram. With Sonneta, we have re-imagined spectrograms. Instead of deciding bandwidth in advance, Sonneta has a slider to allow you to go change from narrow-band to wide-band (or anywhere in-between) "live" as you move the slider. This interactivity gives you a better "feel" for your data. Of course, there are numerous other settings such as color scheme, showing formant contours, dynamic range, pre-emphasis, and so on to give you full control over the spectrogram display if you need it.

Library of Norms

A major innovative feature of Sonneta is its Norm Library. This library contains hundreds of normative references from research literature. Sonneta automatically selects relevant norms from this library to apply to your subject's charts and reports. You can also browse or search the library and graphically compare norms with each other as a research or educational aid. If you have norms that aren't in the library, you can easily add them yourself.


Manual Adjustments

Sonneta has a very robust algorithm for finding pitch. However, all software will occasionally measure an incorrect pitch value. When this happens in other products, the error may be obvious to human experts, but there is little recourse to fix it. In Sonneta, however, you can use a graphical tool to "nudge" the software to lock onto the correct pitch.


You can define questionnaires as part of a Sonneta document to save yourself time from filling out paper tools, and later having to transcribe them to the computer. You can also use questionnaire responses as search terms to find a document you are looking for on your computer.


Sonneta indexes your documents so that you can find them wherever they are on your computer. Simply search for a keyword, comment or the subject's name or ID.

Measured Quantities

Sonneta measures 26 quantities for voice recordings and 13 for speech. These include sound pressure level, fundamental frequency, maximum phonation time, several measures of jitter and shimmer, harmonics-to-noise ratio, Dysphonia Severity Index, and spectral/cepstral measures.


Import & Export Data

You can import recordings from another Mac® or Windows® computer simply by dragging the audio file to your Sonneta document. You can also import files from Voice Monitor. Sonneta supports many audio formats including WAV and NSP. It is just as easy to export recordings and measurement tables from Sonneta to use in other Mac and Windows programs.

Statistics & Summaries

Sonneta simplifies the management of research data. If you have made recordings for a group of research subjects, Sonneta can tabulate all of their measurements, demographic information and statistics in a spreadsheet for you.


Develop Your Own Norms

With Sonneta, it is easy to develop norms for the specific populations you work with. If you have made recordings for a group of research subjects, Sonneta can organize the data, calculate normative distributions, and create new norms for you. It does all this in just a few seconds, and then asks you which norms you would like to add to your Norm Library.

Answers When You Need Them

Context-sensitive onscreen help is available throughout Sonneta.


Sonneta can be calibrated to provide measurements of the highest research standards.