From: Christian Boos <cboos@...>
Date: 2002-02-06T04:09:58+09:00
Subject: RE: Ruby extension for IBM Via Voice TTS

Hello,

> -----Original Message-----
> From: Mike Hall [mailto:mghall@enteract.com]
> Sent: Tuesday, February 05, 2002 8:01 PM
> To: ruby-talk ML; undisclosed-recipients: ;
> Subject: Ruby extension for IBM Via Voice TTS
>
>
> I just put up a simple Ruby extension for IBM's Via Voice
> text-to-speech synthesizer.   It's on my home page, listed below.
> Here's the ViaVoice page:  http://www.ibm.com/software/speech/dev
>
> I have some "style' questions, though.
>
> There's many voice and synthesis parameters that control
> the speaking voice, like pitch, volume, speed, head, gender, etc.
>
> What's a good "Ruby way" to add these?
>
> - define general set_param / get_param methods
> 	and write higher-level methods in Ruby?
>
> - define the individual methods in C?
>
*> - make them look and act like instance variables?
>

... by using rb_define_virtual_variable?

Excerpt from the Pickaxe Book:

void  rb_define_virtual_variable(const char *name,
                                 VALUE(*getter)(), void(*setter)()")

  Exports a virtual variable to Ruby namespace as the global $name. No
actual
storage exists for the variable; attempts to get and set the value will call
the
 given functions with the prototypes:

VALUE getter(ID id, VALUE *data,
             struct global_entry *entry);
void setter(VALUE value, ID id, VALUE *data,
            struct global_entry *entry);


Hope this helps!

-- Christian