RE: LF: TI-92 with sound...

Subject: RE: LF: TI-92 with sound...
From: J. Kristian K. Nielsen <fargo@ctav.com>
Date: Mon, 18 Nov 1996 15:58:37 +0100
In-Reply-To: <>
On 18. november 1996 13:50, Ilkka Sorsa[SMTP:y95silso@kotakk.fi] wrote:
>On Sun, 17 Nov 1996 JWardell@aol.com wrote:
>
>> In a message dated 11/17/96 7:34:24 PM, you wrote:
>> 
>> <<just to point somthing out... a computer speaker isnt analog.>>
>> 
>>   What are you talking about? All speakers are analog. The data is digital,
>> there are D/A converters in your computer that output it to your audio out to
>> make analog audio. If you hooked a speaker up to the digital data stream,
>> well you wouldn't hear it because the pitch would be too high, probably for
>> your speaker to even respond to let alone your ears.
>>       -Josh
>
>For example in normal ibm compatibles, that internal speaker is driven
>with a purely digital signal. All digitized sounds played thru that kind
>of speaker are done with some kind of pulse width modulation or something.
>(Like in 1bit dacs in cd-players)
>It would be easier to research possibilities of TI audio if someone made a
>program which is capable of making different (adjustable) frequencies. If
>there is no other possibilty than sending characters thru the port then
>send character streams  with correct 'shape', like 01010101b, 00010001b
>and others like that.. 
>
> -Ipe 
> [ http://www.kotakk.fi/~y95silso ]
>
>
>


When you say "(adjustable) frequencies", what do you mean?. Sould the program send
data with a speciel delay, like, when sending data to a DAC on a soundcard ?


e.x. Sending a wav-file at frequencies 11kZ, to a DAC ?


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       ----------         )))))           J. Kristian K. Nielsen
       ----------         )))))           jkkn@ctav.com
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::::                   )))))         JKKN :-)