Sound question.

Sample your own sound into a single chip micro?

I like sampling sounds and then putting them in a serial eeprom. A

512k unit is under $2 and can store 4 seconds at 8k/sec. The interface easily to PIC's.

Luhan

512k serial eeproms are $2.25 each from Jameco Electronics. They can store 8 seconds at 8k/second, or 4 seconds at 16k/second. Interface to a PIC is easy. Vary the pitch by clocking out the samples at differenct rates.

Luhan Monat

Sounds easy. Only that the PCB needs to be too small, so probably a chip with a built in D-A convertor, a negative voltage charge pump and an audio amp would have been more suitable.

Mike

Luhan wrote:

Perhaps..

an atmel AVR at90s2313 is capable of polyphonic sound through the PWM output. that chip's obsolete. But the replacement attiny2313 should be even better as as it can be clocked twice as fast, and has the (arithmetic) multiply operation implemented in hardware (which would be handy for envelope shaping etc...)

plenty of extra I/O pins if you want to signal it to make different sounds.

sample code

Bye. Jasen

Is "firing up" applying power to?

PB ! ------- Vin ----O O----+---!!----+---------+------ ! ! ! \ ! \ ! \HC04 / ----! O---+--! O----+---Out \ ! ! / ! ! / ! ! \ ! \ ! ! GND / GND / GND ! \ \ ! ! ! ! -----------+----!!----

--
--
kensmith@rahul.net   forging knowledge

I can make them go "Pop" pretty reliably. ;-)

-- Paul Hovnanian mailto: snipped-for-privacy@Hovnanian.com

------------------------------------------------------------------ c (velocity of light in a vacuum) = 1.8x10^12 furlongs per fortnight

Paul Hovnanian P.E. wrote: > siliconmike wrote: > >

LOL. The trick is to 'pop' more than once and on command. Sort of like 'any landing you can walk away from is a good one. If you can use the airplane again, it's a great one.

GG

Sounds like the skydiver's comment: Whuffo: "Whuffo you wanna go jump out of a perfectly good airplane?" Skydiver: "When was the last time you ever heard of a "perfectly good" airplane?"

Cheers! Rich

yes, I think the term dates from when steam engines were cutting edge technology.

neat, I did something similar with a 4047 once and it sounded quite nice too. I wonder how a 4555 would go with a capacitor in the supply like that.

Bye. Jasen