Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Introducing very low bitrate data into speech band frequency

Status
Not open for further replies.
D

D1_DRE

Member level 3
Joined
Apr 26, 2002
Messages
61
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
518
EMBEDDING DATA

Hello,

I'm trying to introduce very low bitrate data into speech band frequency. I'm thinking of doing this in the form of BFSK. I've choosen the lower frequency band, ie between 250Hz and 300Hz. Example is to inject a 280Hz sine wave to represent '1' and 250Hz to represent '0'. Any idea on how practical this might be and what is the maximum bit rate I'm looking at. The finnal audio will be sent through an AM transmitter of 12.5KHz bandwidth. I have considered psread spectrum and I don't really like the idea since the quality of the channel is already poor.

I'll appreciate your suggestions.

Dre. :wink:
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top