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Date:      Fri, 12 Aug 2011 16:02:24 -0700
From:      Gary Kline <kline@thought.org>
To:        Polytropon <freebsd@edvax.de>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: library with click built-in?
Message-ID:  <20110812230224.GA9253@thought.org>
In-Reply-To: <20110812213921.6cfdfa89.freebsd@edvax.de>
References:  <20110812192745.GA15543@thought.org> <20110812213921.6cfdfa89.freebsd@edvax.de>

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On Fri, Aug 12, 2011 at 09:39:21PM +0200, Polytropon wrote:
> Date: Fri, 12 Aug 2011 21:39:21 +0200
> From: Polytropon <freebsd@edvax.de>
> Subject: Re: library with click built-in?
> To: Gary Kline <kline@thought.org>
> Cc: freebsd-questions@freebsd.org
> X-Mailer: Sylpheed version 1.0.6 (GTK+ 1.2.10; amd64-portbld-freebsd8.2)
> 
> On Fri, 12 Aug 2011 12:27:48 -0700, Gary Kline wrote:
> > I only use my FreeBSD computer as a server; it isn't even hooked
> > up to my speakers, so there is no way of testing anything i write
> > that involves sound.  So....  does anybody know if any other toolkit
> > outputs audio?  
> 
> There are two means:
> 
> The first one is the echoing of the ^G (BEL) character, 0x07
> which is handled by the text mode console or terminal emulators
> like xterm. In X, the sound that will be produced can be
> controlled with a xset setting.
> 
> xset [-b] [b {on|off}] [b [volume [pitch [duration]]]]
> 
> See "man xset" for details.
> 
> 
> The other one is the system speaker. If you have "device speaker"
> in your kernel, you can access /dev/speaker (if the permissions
> are set properly, see /etc/devfs.conf for an example. Using
> the "note language" known from several BASIC dialects for
> microcomputers, you can easily create sounds for that. A list
> of the "note language" is in "man 4 speaker".
> 
> Here's a small example:
> 
> #!/bin/sh
> read -p "CW ===> " TEXT
> echo ${TEXT} | morse | awk '{
> 	if(length($0) == 0)
> 		printf("P4\n");
> 	else {
> 		gsub(" dit", "P32L32E", $0);
> 		gsub(" di",  "P32L32E", $0);
> 		gsub(" dah", "P32L8E",  $0);
> 		printf("%sP16\n", $0);
> 	}
> }' | dd bs=256 of=/dev/speaker > /dev/null 2>&1
> 
> NB: The timing is slightly out of proper relation. :-)
> 
> 
> 


	thanks.  i have _never_ heard the BEL inmy version of
	ubuntu.  my server is a 2-proc dell, too cheap to
	have a real spkr; it does beep [bbarely] thanks to some kind
	of piezo gimmick. but no speaker connections.

	i'll check around on my homebrew desktop...


> 
> -- 
> Polytropon
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...
> 

-- 
 Gary Kline  kline@thought.org  http://www.thought.org  Public Service Unix
           Journey Toward the Dawn, E-Book: http://www.thought.org
          The 8.51a release of Jottings: http://jottings.thought.org




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