memory

"I hv one small swollen key filter design software but unable to upload here."

There are people whose profession it is to help up your load.

"frequency(?)"

Correct. A pink star for you!

"maybe you need one MPU for each frequency(?) so it will cost a lot."

To cover each frequency between 20Hz and 20,000Hz would require 19980 MCUs!

Very costly indeed!

As long as you stay avay from LARGE memory model, one MCU will manage several correlation filter - one for each detect frequency. Length of correlation filter affects band-width of each filter. Quite possible to detect frequencies below the noise level as long as the beeps have small deviations from nominal frequencies.

can iuse 1-wir eeprom to store cfg dta for signle strand?

"??? why the trollops keep trying to hyjack our project thread ???"

That brings up a really interesting question:

Why are we morons not using e-mail, blogs, social networking
websites, etc. for our idiotic project discussion?

"can iuse 1-wir eeprom to store cfg dta for signle strand?"

Absolutely! We use FPGA on source end of all the strands and clock a 1-bit
transaction on the strand when the strand's signal crosses zero.
On the other end, each strand has it's own 1-wire slave; EEPROMs, MCUs, etc.
The throughput is really pretty good overall. Obviously the higher audio
frequencies do better.

"... each strand has it's own 1-wire slave ..."

In the interest of maintaining the high quality of this thread:

s/it's/its/

??? why the trollops keep trying to hyjack our project thread ???
if you, for your private discussion had used the appropiate media (e-mail) nobody could have "hjacked your project thread"

i think we must use the secret code to hide detail or they will copy our ideas.
what ideas? that a square wheel is better than a round?

The problem to solve is: The speakers have two stereo inputs.
One for low frequencies, one for middle rage frequencies and one for hight frequencies.
I knew it was bad - but not that it was this bad
1+1+1 = 2 ????

i know you are good strong profesional guru that helps again.
just about as true as 1+1+1=2

This thread isn't intended to be meaningful :)

This thread isn't intended to be meaningful

What a relief!

I was starting to think that I've lost touch with modern design techniques.

Hi dazheng,

another day, another week, another woman (hehe)

By the terms "load labeL, solar panel label, batt label' , i mean "load current, solar panel current and battery voltage" ? In the schematic , i are sensing the voltage across R2 which represents the current drawn from the battery. Then i is using a voltage divider to take a sample of this voltage and producing analog sample using an opamp digital amplifier. I feel this circuit can work much better to sense the battery current.I feel it will work better accuracy if R2 is reduced further (at the cost of watterage).

i want to use it for solar charger and controller , if i use this block for detect load label then it will work at real hardware? i am using mcu with lcd display for showing parameter. batt label, solar panel label , load label, and also with sun tracker(not use at this moment) . have u any idea for that type of project.

thanks

Thanks

zuisti

Hi dazheng,

I know you've a good programmer and understand lots, but i've found an artic that you will like to become king master guru !

its advanced c pointer use and how to explain arrays;

www.gamedev.net/.../article1697.asp

I read some but got lost.i am not such goodd programmer as you mate.

readn and learn lots mate.

zuisti

Oh No! - don't let him loose with pointers...!!

=:0

You're quite a butcher, I must say.

"i are sensing the voltage across R2 which represents the current drawn from the battery. Then i is using a voltage divider ..."

s/i are/I am/
s/i is/ I am/

"... further (at the cost of watterage)."

s/watterage/wattage/

"i want to use it for solar charger and controller , if i use this block for detect load label then it will work at real hardware?"

Is that a statement or a question?

"but i've found an artic that you will like to become king master guru !

its advanced c pointer use and how to explain arrays;

">www.gamedev.net/.../article1697.asp"

You're kidding, right? With errors occurring in the very first code snippet in Chapter 1, I didn't even bother to read further.