I\'m looking for a text-to-speech converter, that produces a wave or mp3 file (n

Question

I'm looking for a text-to-speech converter, that

produces a wave or mp3 file (no real-time needed)
has no fundamental restrictions on commercial usage of the produced output

comes with female / male speakers for at least
English and
German language

puts output quality (pronunciation, tone and intonation) over ease of use (third-party product integration, nice GUI, etc.)

is gratis (in the ideal case)

There is no need for a whole integrated (and expensive) software suite.

Preferred environments (in descending order): JVM (binaries) > Windows > Linux console > web app

Explanation / Answer

You could take a look at IVONA Text to Speech. It's not free but it does meet all of your other requirements:

Multiple voices (with additional voices available)
Multiple languages (with additional languages available)
American English
British English
German
Spanish
French
Italian
High quality (from my experience* anyway)

* One thing I will note, is that I have only used the IVONA Text to Speech voices for Android and I am basing my assessment of the quality level of the voices off this.

The software is available via their website and comes in a variety of shapes and sizes: for Windows, Android, as APIs for developers, as a Speech Server (for IVRs and the like), etc.

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