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Does any one know of a good text to speech library. It needs to be open source and provide C API?
PS: I've already done a search, but I'd like recommendations from people who have actually used these APIs
Festival is an open source text-to-speech system.
Stanford uses it for their Natural Language Processing class, and they have up-to-date instructions about installation on this cs224s homework page. Installation on Mac OS X requires a couple patches, which they've wrapped into a handy install script.
There are alternate voices you can use which sound noticeably better than the stock ones. You can find information on these voices in this forum post:
How to setup more realistic voices in Festival. Those instructions are for Ubuntu, but the voices work with any Festival installation.
you can go for Festival worked nice for me.
I have used flite in an embedded server. It has a small footprint and comes with a single voice
eSpeak is another lightweight TTS. More robotty than Festival.
Hey what about MARY?
It looks so awesome to me which one should we push further for open source enterprise computer or androids or whatever? We need to strenghten efforts by shifting all open source resources to the best/most promising we have so far.
Anyone experiences with MARY TTS? Or does it have a flaw (because noone mentioned it before)?
More links:
http://www.babelfish.org/tts-free.htm.
https://www.cereproc.com/en/support/live_demo
http://www.digitalfuturesoft.com/dfttssdk.php (also provides ARM version, like MARY + Festival)
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I have seen a few programs that use simple GUI-like interfaces made out of text. A good example would be links (see screenshots below).
Are there any C libraries for creating this sort of thing out there? I would ideally like mouse support but that is not strictly necessary. Cross-platform is good but I really only need it for *nix-like systems (including mac). I don't have a great deal of experience with C but I know my way around it, coming from C++.
If libraries aren't available, how would one go about coding this kind of thing from scratch?
Screenshots of the kind of thing I want:
EDIT: Yes, I know about curses/ncurses, but does anyone know of any good tutorials to make this kind of program with it?
You could have a look at CDK--
project home page.
This is a set of widgets for Menus, pulldowns etc. wrapped around the basic ncurses library so your coding is at a much higher level and a lot of the intricacies and gotchas of ncurses are already dealt with.
Try ncurses - this is a library which with you may create such GUI environments under console.
The best tutorial I know for curses is Using C With Curses, Lex, and Yacc: Building a Window Shell for Unix System V, by Axel-Tobias Schreiner
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I have looked around for good SSL/TLS libraries that support TLS 1.2
I also want to use this library on an embedded platform so it should be small, easy, secure and free. It should be a c/c++ library.
So far i have come across Cyassl, Polarssl Matrixssl a lot so i think that one of these should be a good choice (Openssl is way too big).
Now i would like to know why people use one over the other.
Thanks
Ok.. Just for starters they all do the same. All three can run on embedded platforms. The difference is where their focus is.
From my personal experience:
PolarSSL has loads of documentation, an understandable API, examples, and gives you the ability to actually delve into the code and understand what is happening. In my experience this is a great plus in case you need to debug a specific issue. They only provide Makefile / CMake / MSVC project files, so the task to include it in your embedded environment is yours.
Cyassl's code is harder to understand and tweak. But they have more pre-made Makefiles for specific development platforms. Depending on your environment this might weigh in (for me it rarely does). In a number of comparisons I did as a subcontractor, they are pricier than PolarSSL though.
Pick MatrixSSL if you don't have budget constraints ;) Definitely the priciest of all and I found no specific reasons to actually use it though in comparison to the alternatives..
With the whole NSA / PRISM thing around: If you want something specifically built in the US, then Cyassl is the best choice. If you want something non-US, PolarSSL is the only sane choice.
So if by free you mean: I'm going to use it in an Open Source project, then price does not matter. The verdict from the community: PolarSSL has good adoption in OpenVPN, Cyassl in MySQL.
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I was wondering whether someone knows any good examples of using libssl as a programming library. Its kind of annoying only digging through the code of libssl trying to make sense of it.
You've run into the lack of documentation problem OpenSSL has. IBM DeveloperWorks does have an article about using OpenSSL.
If you want to utilize a better documented library, you can take a look at Mozilla NSS.
Just that I'm using Openssl too and think their wiki page also has some good info:
http://wiki.openssl.org/index.php/Main_Page
Here is a good working example that's especially useful for iOS developers:
the remail email client uses MailCore iOS email library wrapper, which in turn uses the multi-purpose libetpan email library, which in turn uses SASL, an authentication layer, which in turn uses your beloved openSSL.
So if you're a believer in the learn-by-example methodology, the above gives you a lot to work with and practice on.
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What small open source projects in C are interesting for learning good design?
The project should be:
Not too large (like the linux kernel)
Well documented
Perhaps still under active development
I've just started learning C, and while the language itself is not too difficult, i'm struggling how to design larger applications, so i thought checking out other open source projects would be a good starting point.
Thanks!
Redis (nosql db) is:
under active development
a manageable size
portable and robust
has no external dependancies
very well written, understandable code
In my opinion, good examples of moderately sized projects written in C are:
GNU Scientific Library (besides the source code, don't miss their design document)
Kazlib
Git
Posix threads are a perfect example of good C design
I like gnucash: http://www.gnucash.org/
No too large like Linux kernel, but still big I think.
You can start learning from small and well structured applications like http://abygaelle.guillaume-fr.net/trac/gemmes
It all depends what kind of projects you are interested in. And what aspect of it (specific algorithms, UI, networking, etc, etc...)
Head over to freshmeat, sourceforge or ohloh and browse the projects for your area of interest.
Alternatively if you want to look at projects that were chosen for a particular reason google summer of code might be interesting for you - even though these rarely include full projects.
EDIT:
Also alternatively, you might take something like linux kernel, but instead of trying to understand everything try to
get the big picture
then concentrate on one tiny piece of it and inspect how the code changed over time (and for what reasons - it should be quite well documented)
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I'm potentially interested in using hierarchical temporal memory model to solve a research problem I am working on.
Are there any open source libraries for this? I'm fairly open to languages, although C++, Java or Haskell is preferred. If yes, has anyone had any experience with them?
There's NuPIC (Numenta Platform for Intelligent Computing), which is now completely open-source. You also have NuPIC.Core (which contains the core NuPIC algorithms written in C++), but, at the moment, it is still under construction.
There's also one active implementation I could find on the Wikipedia page for the Memory-prediction framework (which is the J. Hawkins' theoretical framework for the HTM theory):
Project Neocortex, which seems completely open source (researcher's page).
There is this Java HTM open source project:
http://code.google.com/p/htm/
pyHTM is a pure Python implementation.
Since HTM was invented by the founders of Numenta, did you try their implementation? It's not technically open source, but it's free to do research with. I believe it's implemented in a mix of Python and C++.
Another open-source codebase here:
http://code.google.com/p/adaptive-memory-prediction-framework/
This one is an implementation of MPF based on Kohonen SOM, not HTM.
I have created a simplified version, but it works at the moment; it's not that hard to use.
It's available here: http://devmaster.net/forums/topic/17960-feedback-working-out-of-heirarchical-temporal-memory/
It basically records the picture, then pumps it back out of the htm memory.
You can now access to openSource HTM-CLA implementation. See here:
http://blog.mohammadzadeh.info/index.php/open-source-implementation-of-hierarchical
Yeah Numenta bailed and decided to go for the bucks themselves but it looks like some of guys on the Forums are trying to get an open source version going. Try looking here:
http://sourceforge.net/p/openhtm/wiki/Home/