My original query,
>
> Hello,
>
> We have a sparc2 with audio capabilities. One of our users wants to use
> this sparc for a project in the area of speech processing. He wants to hook
> up a tapedeck to the microphone-input of the sparc but is worried about
> the differences in signal level and impedances. We don't have information
> about the audio hardware of the sparc2 right here.
>
> Does anyone know the specifications for the audio input of the sparc2? Does
> anyone have experience using the audio input in combination with a CD-player
> or tapedeck? For your information, the output of the tapedeck can drive a
> headphone with an impedance within the range of 20 - 60 Ohm.
>
> Any information would be very helpful. Thanks in advance,
>
> Johan Thole.
The list has helped very well!
Thanks to:
russ@cs.utexas.edu!issi!issi.com
bhunter@intelect.com
Mike Raffety <miker@sbcoc.com>
Roy Hallquist <rhallqui@rigel.uark.edu>
Steve Elliott <se@computing.lancaster.AC.UK>
Eng.Sun.COM!Daniel.Steinberg
The answers I got can be divided into three categories:
1) You don't have to worry about the impedance- and signal-differences.
Just plug it in and see if everything goes well.
2) You can order/assemble device X to attenuate the signal-level
of the CD-player.
3) You can attenuate the signal using the gain-factor of "soundtool".
I have chosen the second solution. The device recommended most often was
the "Radio Shack Inline Attenuator, Cat. No. 274300A".
Now for the unbelievable part!
I have asked for this device at every hobby/audio-shop in Maastricht, but
even if they know what I am talking about they cannot order it! One shop
even said: "Radio Shack? Oh, they are bankrupt!"
Desperate, I decided to contact a friend of mine in the USA to have this
thing ordered. He could arrange this in approx. 5 minutes and he has sent
it to me. I expect to receive it next Monday.
Ok, thanks again to everyone who responded!
Johan.
=> Anyone interested in the original replies can contact me, of course.
-- -------------------------------------------------------------------------------- Johan Thole (thole@cs.rulimburg.nl) | The wrong side of a door is University of Limburg | where the dog is. Dept. of computer science | #include <std/disclaimer.h>
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:06:49 CDT