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Notice on sound files:
The voice response features in this software work a lot better with
professionally generated sound files. Upstream ships several such
collections that people usually install on their own.
Two prominent ones as 'Heather' for US English and 'Elin' for Swedish.
Debian does not ship the sound files due to licensing and other
concerns. The concerns fall into two areas:
1. Some voice generation services are proprietary. Upstream
includes written texts, but the generating algorithms are often
proprietary or opaque.
As such, the sound files are binary blobs even though they are
readily understood by any adult who speaks the language. Their
inclusion in Debian main may therefore be improper.
2. Some services limit the distribution of the sound files. Most
notably, the Acapela-Box service that was used to generate the
Heather files states in their Terms of Service:
"Limitation on Rights on Audio-Files: Except for Radio and TV
Broadcast you have all rights on the audio-files purchased
through the Service if they conform to this TOS. For Radio and
TV Broadcast you have to get a written authorization from Acapela
Group."
Those terms of service appear incompatible with the GPL license
upstream included in their distribution of some sound files at
the time of writing.
Please do not package sound files for Debian unless such concerns are
addressed. Otherwise, inclusion 'non-free' may be more appropriate.
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