Re: TI-H: Built in speaker
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Re: TI-H: Built in speaker
>Richard Piotter wrote:
>>
>> I don't know if it will fit, but "MINIATURE PIEZO BUZZER ELEMENT"
>> Catalog number 273-064 is LOUD. It costs $1.79, but it is in a
>> reverberation case that "shapes" the soundwaves comming out so they
>> sound louder. only catch is it is thicker cause of the case. It runs
on
>
> I haven't made one yet but is there any way you can just use
>headphones?? It'd be much more volume and wouldn't bug the teachers in
>class... maybe someone can find a 4 ohm headphone out there.....
> create 2-bit sound. It isn't much for improvement, but
>> The sound would be something like this:
>>
>> 5v | |
>> | |
>> | | |
>> | | |
>> | | | |
>> | | | |
>> 0v +------+---+---+--
>> 00 01 10 11
>>
>> If someone wants to try it, go for it!
>>
>
>With two bit sound would it be posible to make it stereo??
>
>Pellaeon the completly lost but gaining information quickly TI-medeler.
>http://surf.to/pellaeon
>gramps@wf.net
>
Earphones are coils of wire and it crashes the calc when you leave the
shell. The piezo element is a crystal and works more like a capacitor
than an inductor (like the speaker coil). You can get a crystal earphone
from (probably) Radio Shack and hook it up.
1-bit sound requires only 1 wire, but since there are two wires, stereo
1-bit sound is possible. z-Pong has stereo sound I think. To make 2-bit
sound you need two resistors of different values and 1 piezo element,
but because 1 speaker requires both wires, you lose stereo capability.
You could use a switch to select between mono 2-bit and stereo 1-bit if
you wired it right (need some diodes though).
It ought to work fine. I havn't tried the values of the resistors.
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