From: Sebastian Kaliszewski <Sebastian.Kaliszewski@softax.com.pl>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed point)
Date: Tue, 24 Jan 2006 19:29:44 +0100 [thread overview]
Message-ID: <43D67218.9000107@softax.com.pl> (raw)
In-Reply-To: <4EECB3A5-BFC6-4003-BABF-A1EC5ED958E6@gmx.de>
Joachim Henke wrote:
> Ok, these are really strong arguments. Thanks a lot for your
> interesting statements! I'll do some testing on square waves and will
> post an updated patch, as I am also not totally satisfied with the
> current sound myself.
One little suggestion...
Real PC-speaker is rather poor source of sound, and I also noticed, that
sound cards which took PC-speaker sound for themselves (some SB-clones did
route PC-speaker sound into thier own output) liked to low-pass filter the
resulting audio. So to make things as real as feasible, use your wave table
to store something like square wave with rounded corners -- maybe sth like
pow(sin(x), 0.2) (i.e. sinus rooted to 5th degree) will sound pleasant enough.
rgds
--
Sebastian Kaliszewski
next prev parent reply other threads:[~2006-01-24 18:17 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-09 19:01 [Qemu-devel] [patch] minimal PC speaker output Joachim Henke
2006-01-09 20:40 ` Fabrice Bellard
2006-01-10 9:11 ` he.jo
2006-01-18 23:05 ` [Qemu-devel] [PATCH] PC speaker emulation Joachim Henke
2006-01-18 23:32 ` [Qemu-devel] " Joachim Henke
2006-01-19 0:32 ` [Qemu-devel] " malc
2006-01-19 20:44 ` [Qemu-devel] [PATCH] PC speaker emulation (fixed) Joachim Henke
2006-01-19 23:29 ` malc
2006-01-20 9:42 ` Joachim Henke
2006-01-20 13:03 ` Johannes Schindelin
2006-01-20 12:03 ` Sebastian Kaliszewski
2006-01-23 21:10 ` [Qemu-devel] [PATCH] PC speaker emulation (fixed point) Joachim Henke
2006-01-24 12:35 ` Sebastian Kaliszewski
2006-01-24 15:50 ` Joachim Henke
2006-01-24 18:29 ` Sebastian Kaliszewski [this message]
2006-01-24 21:45 ` Fabrice Bellard
2006-01-25 0:38 ` Sebastian Kaliszewski
2006-01-25 21:54 ` [Qemu-devel] [PATCH] PC speaker emulation (square wave) Joachim Henke
2006-01-26 4:50 ` Jamie Lokier
2006-01-26 16:55 ` Sebastian Kaliszewski
2006-01-29 10:44 ` Joachim Henke
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