At 05:32 PM 11/4/99 -0300, you wrote:
>Hi
>Has anybody used the ISD 2560 chip, is it good ?
>Sound quality compares to what ?
>How can I play a message over and over again in Push Button mode, should I
>use a Micro??
>Any sites, maybe with an 10W amp ??
>Thanks for your time
>Javier
>
Hi Javier!, I'm using actually this ISD chip, and from my point of view it
is a very
good one, there are others with more quality but requires external memory
and a lot
of hardware, this chip does need nothing else to work!, may be a Power amp :-).
The sampling frecuency of the 2560 is 8 Khz with 60 secs of audio, so I
think that
for voice applications it's very good enough.
Yes you can reproduce over and over a message, no micro is needed if are
planning to
play only 1 message (because you don't need to select which message to play,
if only one is stored on it).
I'm using LM388 and Sounds good enough for me, but only 1.5W, mm a TDA2003 comes
to my mind but it has a high current in stand by mode (about 100mA if I remember
correctly) , if you are not limited in power, this one is very easy to use and
to find in a electronic store :).
If you like, I have the entire datasheet of the ISD 2560, I can send you by
email but the four datasheets have 1.6 MBytes, I have no problem sending it
to you email address, if you like it, let me know, or we can meet on IRC and
make a DCC send file transfer too, as you prefer.
Oops!, I forgot one thing, the reason because I choose the ISD chip was the
EEPROM memory, if you lose power the message remains on it, and even if part
of the bits erases with time, the message will be still playable, only the
quality is affected, but it will keep working. very nice isn't it?.

Hope be helpful.
see you.

   Leandro J. Laporta (LU2AOQ)
   mail: lu2aoq@yahoo.com
   wrk: Arg. Assoc. for Space Technology.
   ham: TCP/IP high speed group HSG


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