User Abdallah Abdoulhakim wrote to us:
We plan to conduct a poverty survey soon in Comoros using your application and we consider the use of the audio recording functionnality . We would like to know what kind of compression you are using in audio compression to estimate the resulting costs. Thank you for your collaboration!
Currently, Survey Solutions saves audio recording in *.m4a files. You can learn more about this format by Googling the external sites or refer to e.g. Wikipedia article on this file format.
For quantifying the costs, make several recordings using e.g. a demo server, then download the resulting audio files. This will allow you not only to estimate the costs, but also test your software for compatibility in playing those audio recordings.