Simple A/D and D/A onverter for novice?? - Electronic Circuits Projects Diagrams Free

Electricman2K5 · 11th March 2005, 07:57 PM

Does anyone know of a simple very basic functionality A/D and D/A converter I can use I only want to digitize voice at no more than 4khz. I have never used an A/d before so it must be quite simple to use-
I don't not want to use a microprocessor of any kind...

Any idea's

Thanks

Russlk · 12th March 2005, 02:59 PM

You need to tell us more about what you are trying to do. A/D and D/A seems like a waste of time.

Electricman2K5 · 12th March 2005, 03:53 PM

I want to use it for an optical intercom via infra red- I assume that if i send Bits to the TX (i.e. digital) then using the reciever as an opto schmitt trigger I will get a high quality signal. Thats my thinking. Im not sure if it's right though.

Russlk · 12th March 2005, 06:01 PM

You will want to use Manchester coding in order to recover the data at the receiving end.

audioguru · 12th March 2005, 11:56 PM

By the time you filter the important high frequencies out of your high quality signal to feed to the AD then filter the square-waves out of the DA, it will sound awful!

FRIED · 13th March 2005, 12:18 AM

Could consider PWM or FM, both easier than AD-DA

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11th March 2005, 07:57 PM	(permalink)
Electricman2K5	Simple A/D and D/A onverter for novice?? Does anyone know of a simple very basic functionality A/D and D/A converter I can use I only want to digitize voice at no more than 4khz. I have never used an A/d before so it must be quite simple to use- I don't not want to use a microprocessor of any kind... Any idea's Thanks

12th March 2005, 02:59 PM	(permalink)
Russlk	You need to tell us more about what you are trying to do. A/D and D/A seems like a waste of time. __________________ see my website: www.geocities.com/russlk

12th March 2005, 03:53 PM	(permalink)
Electricman2K5	a/d I want to use it for an optical intercom via infra red- I assume that if i send Bits to the TX (i.e. digital) then using the reciever as an opto schmitt trigger I will get a high quality signal. Thats my thinking. Im not sure if it's right though.

12th March 2005, 06:01 PM	(permalink)
Russlk	You will want to use Manchester coding in order to recover the data at the receiving end. __________________ see my website: www.geocities.com/russlk

12th March 2005, 11:56 PM	(permalink)
audioguru	By the time you filter the important high frequencies out of your high quality signal to feed to the AD then filter the square-waves out of the DA, it will sound awful! __________________ Uncle $crooge

13th March 2005, 12:18 AM	(permalink)
FRIED	Could consider PWM or FM, both easier than AD-DA