From: Itai Nahshon <nahshon@actcom.co.il>
To: linux-sound@vger.kernel.org
Subject: Re: Playing a sine wave
Date: Wed, 12 May 1999 17:59:17 +0000 [thread overview]
Message-ID: <marc-linux-sound-92657688928217@msgid-missing> (raw)
In-Reply-To: <marc-linux-sound-92649832906805@msgid-missing>
>> 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).
See
http://metalab.unc.edu/pub/Linux/apps/sound/dtmf-dial-0.2.tar.gz
It combines two sine waves and outputs to /dev/dsp. You are
welcome to hack on it. Internally it has the function to
produce sine waves at any integer frequency and sampling rate.
Itai
next prev parent reply other threads:[~1999-05-12 17:59 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
1999-05-12 17:16 ` Eric Mitchell
1999-05-12 17:59 ` Itai Nahshon [this message]
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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