From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,12eefc27e85fb3ac
X-Google-Attributes: gid103376,public
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news4.google.com!news.glorb.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local01.nntp.dca.giganews.com!nntp.comcast.com!news.comcast.com.POSTED!not-for-mail
NNTP-Posting-Date: Wed, 27 Apr 2005 00:48:01 -0500
From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Typical Newbie Problem: Tone Generation
References: <1114563757.133852.169710@o13g2000cwo.googlegroups.com>
X-Newsreader: Tom's custom newsreader
Message-ID: <EM2dnRwl0M4PuvLfRVn-iQ@comcast.com>
Date: Wed, 27 Apr 2005 00:48:02 -0500
NNTP-Posting-Host: 24.6.127.15
X-Trace: 
 sv3-BClO7ifaiVvnA9tGnT1ZvHhYjSaY+5QinsmSJbbVjki2ZCZybEx3ROhpH4hLY6uGXR9vA1rEtIyRfox!pjAFJZlVFGf5ZgZ0NlLD/JMFeCZGRM0vPOGPZWVVkw7+7PacpSXIYu/SEiE=
X-Complaints-To: abuse@comcast.net
X-DMCA-Complaints-To: dmca@comcast.net
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint
 properly
X-Postfilter: 1.3.31
Xref: g2news1.google.com comp.lang.ada:10745
Date: 2005-04-27T00:48:02-05:00
List-Id: <comp.lang.ada>

Windows has a tone generation call.  I believe you can see it in a
download of the free Claw.Sounds
    procedure Beep (Hertz : in Hertz_Type := 400;
                    Milliseconds : in Claw.DWord := 200);
        -- Create a Beep with the specified Hertz and Millisecond duration.
        -- Raises:
        --      Windows_Error if Windows reports an error.
        --      Not_Supported_Error if not running on Windows NT and the
        --          parameters have values other than the default ones.
        -- Implementation note: On Windows 95, this always triggers the
        -- system default sound; the parameter values aren't used.  Use the
        -- control panel to adjust the sound or turn it off.
        -- Note:
        -- This routine waits for the sound to be played, returning only
        -- when it is done.

The supported Claw has the routines for playing waveforms and a little demo
that plays a tune where you can adjust the tone characteristics, and thus
the "instrument", on the fly.