Human voice with picbasic

[karlosmks]

Hello:

Is posible to save human voice in a flash memory?? I wish to program with PicBasic and a 18F6720.
The circuit has a microfone in a analogic input, a flash memory and a speaker. First save a voice in the memory and then play it in the speaker.
I don't know about play human voice. How I can do it??. I need some track.

thnks

[Deimos]

Hi:

I think is more simply to use an ISD25120, you can record in the memory sound or voices, to do this whith a pic, i think is very dificult, you'll have to generate the correct frecuences to generate voices, so, use an ISD, look at here:

http://www.freewebs.com/glafebre/relojparlante.htm

That is a clock, can say the time talking 

I hope that can help you.

[karlosmks]

Thanks Deimos. But i have a program with ISD4004. The problem is to save the voice in the ISD because is necesary to save it playing with a sound source. And is so much time. I want to save the voice digitally. This is very fast, just a few seconds.

[Deimos]

you may find a way to generate the correct frecuences to generate voices, but i dont know how, sorry 

[th_sak]

Hi, have a look at this. I used it with success.
http://www.romanblack.com/picsound.htm

[MAXPAYNE]

Say Winbond ISD series bye bye !!!

[meax98]

I used two solutions with great success:

Devantech SP03 - Text to Speech Synthesizer:
http://www.robot-electronics.co.uk/shop/Speech_Synthesizer_SP032006.htm

ISD ChipCorder & Speech ICs:
http://www.winbond-usa.com/en/content/view/36/140

[Ikaros]

Since you have a fast MCU, I would suggest too, to use Romans Black technique. Good and compact.

[karlosmks]

I have a file generate with Romans Black. How I can use it??

[QATQET]

Take a look at

http://www.picbasic.org/forum/showthread.php?t=6870

there is an interesting project with audio. 

[th_sak]

I have a file generate with Romans Black. How I can use it??

What u have is a lookup table. I don’t know how to use it with picbasic but I 'll send 2 examples I made. (Assemble it with mpasm.exe)
http://rapidshare.com/files/59593663/picsound.rar.html

[ABBOSE]

You can also use Aplus’s  APR 9600 stand alone ( no required of micro controller) IC for recording and playback. It is similar to ISD 2560 but I think reproduction is better than ISD. See for more details http://www.aplusinc.com.tw/pro-recording.htm
Other IC like APR 6008 ( 8 minute recording & playback) & APR 6016 ( 16 minute) with SPI interface also available.
 
ABBOSE

[Sun_rise_pt]

You may use a PIC with PWM (like 16F628). Or a 16F84 conected to 8 bit DAC (with resistors are more cheap...).
Translate the the Windows WAV file with pre recorded voice to a BIN file end program this on a 24C256 EEPROM and make a program to scan the adresses.

This works perfect for records of some seconds of course...

[SONSiVRi]

Just an inspection;
Human ear's work between 20 Hz and 20 KHz, that means we need to sample 19980 steps.
It will enough to save 1 sample for 14 bit (16384 steps).

[jeanninemtv]

humm

what about the voice filter?

any suggestion?
any design?

i tried 1 bit algorithm with pic and eeprom simulated  in proteus but output noisely unfair

[alvinserna]

hi Sun_rise_pt,

have you done this already? could you be so kind to share the
schematic diagram and source code  to everyone... 

esp. the one using PIC 16f628 bec. it is cheaper to build...thank you..

[th_sak]

If you want to use pic16F628 have a look at this site: http://home.alphalink.com.au/~derekw/pictalker/main.htm

[Sun_rise_pt]

Wait few days please...

I make a upload for that... ...and all works fine. Past year I've buit a bird repeller with a falcon song to prevent the aproximation of H5N1 flu desease.

[ang1960]

All in one pictalker (software,firmware, SCH,PCB protel99SE format)

[dulce_antunes]

Some time ago i made some experiences with a good voice recorder
it's the ISD 1420, simple to handle and good quality sound
I've made a pcb for testing, with Altium
If someone is interested please let me know

Txs

[alvinserna]

hi dulce_antunes

Im interested,can you share it? tnx

[th_sak]

Hi,
There is a very good project for human voice in EPE magazine (Dec 2007) starting at page 39. Download from: http://www.sonsivri.com/forum/index.php?topic=1896.405

[Deimos]

I still think that the best way is using an ISD.

Look here:

http://www.freewebs.com/glafebre/relojparlante.htm

Is there a simple clock to save some data and then reproduces the time voice.

It is designed with a ISD25120.

[elektrofuniv]

isd chips has not enough memory for the record
if you wanna record more long voice,, you have to connect several isd s with addressable array. made disadvantage for me, some times ago:)

[Deimos]

I think the 40 series is great, can record 2-16 minutes duration

http://www.winbond-usa.com/products/isd_products/chipcorder/productbriefs/ISD4000_PBa.pdf