Audio output design

Radio Shack used to sell something based on the ISD1520 chip. At one
time, Digi-Key carried various models of this chip. Maybe that will help
you get started.

Chuck

 

Hello,

I am trying to find the easiest way to design a circuit that would
allow prerecoded sound (piano, flute, animal sound etc...) to play
whenever a key is pressed. I want to actually recreate those cheap
keyboard you can buy for kids but make it easy to change the sound
bank.

I was wandering if there was any "off the shelf" IC chip that would
allow this type of application. My goal would be to design a keyboard
that would have about 12 notes.

Thank you for you Help.

Rickydou.

 

Radio Shack used to sell something based on the ISD1520 chip. At one

I though about this avenue, but how can I record 12 to 20 sounds
(different animal sounds or different piano tones) and use another
chip that would allow me to look into a lookup table to get the sound
I need when I touch the first key and another sound for the next key.

Also I am looking to make a polyphonic instrument, so I want to play
multiple sounds at the same time...

Any suggestions?

Thanks

Rickydou

 

I was under the impression that you could randomly access multiple
stored sounds with the device, so if my memory is correct, that should
not be a problem if you simply decode the keys to access particular
stored sounds.

The polyphonic part or your requirement does make it tough. I suppose
you could use multiple chips, but that doesn't sound friendly. Surely
you can do what you want with a computer. Any computer, but one with a
soundcard makes life easy.

Chuck