Machine voice

SDL Development
1

hi all
does anyone what is the cause of hearing the actual voice like the machine
voice?
thankx in advance

2

Vocoder style or something like that?

Could be a buffer size and/or sample format mismatch somewhere. That
can cause short snippets of sound to be repeated, or snippets of
silence or garbage to be inserted every N samples, causing various,
somewhat vocoder like, effects.

Or perhaps you’re using smaller record or playback buffers than the OS
or driver can handle? (Anything below 100 ms latency - around 4096
sample frames at 44.1 kHz - is asking for trouble on some platforms.)

//David Olofson - Programmer, Composer, Open Source Advocate

.------- http://olofson.net - Games, SDL examples -------.
| http://zeespace.net - 2.5D rendering engine |
| http://audiality.org - Music/audio engine |
| http://eel.olofson.net - Real time scripting |
’-- http://www.reologica.se - Rheology instrumentation --'On Tuesday 11 July 2006 14:38, stanchovic terian wrote:

hi all
does anyone what is the cause of hearing the actual voice like the
machine voice?

3

stanchovic terian wrote:

hi all
does anyone what is the cause of hearing the actual voice like the
machine voice?
thankx in advance

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

cheap soundcards / onboard sound cards often produce clearly audible
noise ( for example from the graphics card ) because of bad
electrostatic / magnetic isolation of the circuits…

does your “machine” sound changes if you move big window on your screen?
for my onboard soundcard exactly that happens.

4

LSD?

Seriously I killed a sound card in an old laptop and if it wasn’t
turned off in the bios on boot it would give out a demonic moan before
hanging the machine, I think I caused it some serious pain and it was
letting me know.On 7/11/06, stanchovic terian wrote:

hi all
does anyone what is the cause of hearing the actual voice like the machine
voice?

–
Steve ‘sparkes’ Parkes - tshirts http://nerd.ws - code http://zx-81.com
Autistic LUG http://autisticlug.org - blog http://sp.arkes.co.uk

5

Stephen Parkes wrote:> On 7/11/06, stanchovic terian wrote:

hi all
does anyone what is the cause of hearing the actual voice like the machine
voice?

LSD?

Seriously I killed a sound card in an old laptop and if it wasn’t
turned off in the bios on boot it would give out a demonic moan before
hanging the machine, I think I caused it some serious pain and it was
letting me know.

LOL, this reminds me of my speaker that gave out a terrible
"Scream"-like screech and then died.

-Sebastian

6

Byte order can cause problems on 16bit sound. Signed-ness can cause similar
problems on both 8 and 16 bit audio. Lastly, back when I wrote a SB16
driver long ago, I found queueing the sound into the wrong buffer can
produce some interesting results.

Byte order and signedness are probably your best bet, perhaps clipping as
well (if you’re mixing sounds manually).

-WillOn 7/11/06, Sebastian Beschke <sebastian.beschke at student.uni-tuebingen.de> wrote:

Stephen Parkes wrote:

On 7/11/06, stanchovic terian wrote:

hi all
does anyone what is the cause of hearing the actual voice like the
machine

voice?

LSD?

Seriously I killed a sound card in an old laptop and if it wasn’t
turned off in the bios on boot it would give out a demonic moan before
hanging the machine, I think I caused it some serious pain and it was
letting me know.

LOL, this reminds me of my speaker that gave out a terrible
"Scream"-like screech and then died.

-Sebastian

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl