From: Hannu Savolainen <hannu@opensound.com>
To: linux-sound@vger.kernel.org
Subject: Re: Playing a sine wave
Date: Wed, 12 May 1999 08:56:41 +0000 [thread overview]
Message-ID: <marc-linux-sound-92652810730306@msgid-missing> (raw)
In-Reply-To: <marc-linux-sound-92649832906805@msgid-missing>
On Wed, 12 May 1999, Hrafnkell Eiriksson wrote:
> Hi
>
> Is it possible to use the sequencer stuff in the OSS sound driver
> to let the sound card play a sine wave of a given frequency?
In theory it's possible to play sine waves using the OPL3 FM synth chip
available on most older (ISA) soundcards. However this is very inpractical
way.
A much easier way is using /dev/dsp. You only need to construct few cycles
of sine wave at given frequency to a buffer. Then just keep writing this
buffer to /dev/dsp as many times as you need. In fact it may even be
possible that somebody has already written this kind of app (look at
ftp://sunsite.unc.edu/pub/Linux/apps/sound).
Best regards,
Hannu
-----
Hannu Savolainen (hannu@opensound.com)
http://www.opensound.com (Open Sound System (OSS))
http://www.compusonic.fi (Finnish OSS pages)
next prev parent reply other threads:[~1999-05-12 8:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-05-12 1:22 Playing a sine wave Hrafnkell Eiriksson
1999-05-12 8:56 ` Hannu Savolainen [this message]
1999-05-12 17:16 ` Eric Mitchell
1999-05-12 17:59 ` Itai Nahshon
1999-05-12 20:22 ` Cornelius Creedon
1999-05-12 21:44 ` Jeff Tranter
1999-05-13 3:25 ` Hrafnkell Eiriksson
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