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Musical Greeting card

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Jinesh14

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Hi. I remember that when I was a kid, there existed these musical
greeting cards (real ones, not e-cards) -- you opened it up, and there
was a chip inside that triggered and played "Happy Birthday" or some
Christmas song, or something.

1. How do those things work? (what chip do they used, how is it
constructed, etc.)

2. How can I manufacture my own?

3. (barring that) How can I find a place that will custom-build these
for me? i want to make them in bulk quantity.

Thanks!
 
1) usually a bare chip die is placed on a piece of pcb, connected and glued in a blob of epoxy - a totally custom solution for huge quantities, and the chip is most likely specifically made for just this purpose, probably even including the actual song being hardwired into it
2) that would be hard to make in the size the chinese make them
3) try to find a manufacturer, it should not be that hard I guess, maybe something like alibaba could have these sort of things?

edit: I googled greeting card sound chip manufacturer and I got a lot of results, including this one https://www.alibaba.com/product-detail/recordable-sound-chip-for-greeting-card_664377423.html?s=p
 
thanks for your prompt reply
i came to know about COB voice ic module ..bt i dnt know to load custom sound on it...?
 
i found this circuit in greeting card.
 

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they are manufacturer of the same why will the let me know the details of they burn voice in that ic.
through contacts pls let me know
 
Well if you are going to buy it from them then they will have to provide such details, otherwise the chips would be useless for you.

And anyway how you record the sounds depends on the chip, and I doubt you will manufacture those on your own.
 
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