[racket] sound.ss teachpack

From: John Riedl (riedl at cs.umn.edu)
Date: Mon Jul 18 21:28:09 EDT 2011

Thanks.  The sound.ss install worked fine from Windows 7, and plays
.wav files, as advertised.

What I was going from to expect speak-word and speak-list was this
quote from HtDP:

Once the controller returns the correct list for amounts whose dollar
and cent amounts are between 0 and 20, test the controller with a
computer that can speak. Set the teachpack to sound.ss, which makes
two operations available: speak-word and speak-list. The first accepts
a symbol or a number, the second a list of symbols and numbers. Both
pronounce the symbols they consume. Evaluate the following expressions
(speak-word 1), (speak-list (cons 1 (cons 'dollar empty))), and
(speak-list (cons 'beautiful (cons 'lady empty))) to understand how
the operations operate.

What am I misunderstanding?


On Mon, Jul 18, 2011 at 7:39 PM, Matthias Felleisen
<matthias at ccs.neu.edu> wrote:
> That's all our sound teachpack ever did. The old one is located at
>  http://www.ccs.neu.edu/home/matthias/HtDP/Sound/
> As you can see, it hasn't been maintained in a while. Sorry, let us
> know if it works [I don't have time right now to try.]
> On Jul 18, 2011, at 5:44 PM, John Riedl wrote:
>> Hello.  What happened to the sound.ss teachpack, which apparently used
>> to include speak-word and speak-list methods.  Those sound great fun
>> for teaching ... but I can't find any evidence on the Web that it ever
>> existed, except for Google Books hits on HtDP :).  (Note that there is
>> a deinprogramm/sound.ss file in the current distro, but that just
>> plays sound files, which is less cool.)
>> Thanks,
>> John
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