CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to support@ccsinfo.com
Digital voice recorder 3secs record and playback!

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
kel



Joined: 17 Oct 2005
Posts: 68
Location: Brisbane

View user's profile Send private message

Digital voice recorder 3secs record and playback!
PostPosted: Tue Apr 04, 2006 8:10 pm     Reply with quote
Guys I need your help.I'm working on my school project which is on building a digital voice recorder.It's suppose to record when a button B0 is pressed,playback when button B1 is pressed and reset when button B3 is pressed.I've got the microphone,amplifier,4th order low pass shebyshev filter working on the breadboard.
The cutoff frequency is 3.3khz which means a sampling frequency of 6.6kzh or 8khz and pic16f877a internal 10bits adc are sufficient.

I believe someone in this forum has already built one.Can anyone post some information on this including some coding...
I will appreciate your helps.
Cheers.. Very Happy
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

View user's profile Send private message

PostPosted: Tue Apr 04, 2006 8:42 pm     Reply with quote
Quote:
I'm working on my school project which is on building a digital voice recorder.

Normally this is done with an "ISD" chip. Look at the CCS driver
file, ISD4003.C, and look at the example file, EX_VOICE.C to see
how to call the functions. Search the board for "debounce" to find
functions to debounce your push-button switches.

The files are in these folders:

c:\Program Files\PICC\Drivers

c:\Program Files\PICC\Examples
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group