- #1

makovx

- 23

- 0

## Homework Statement

I badly needed an urgent help in Matlab.

I have to create a Matlab function (M-File) that will output the low (flow) and high (fhigh) frequency components of a DTMF signal given the numeric symbol (x) (* and # not included).

I don't even know where to start since this is not discussed. A table is given such that

_______1209 Hz __1336 Hz___1477 Hz

697 Hz____1________2_________3

770 Hz____4________5_________6

852 Hz____7________8_________9

941 Hz____*________0 _________#

## Homework Equations

Each pair of tones contains one frequency of the low group (697 Hz, 770 Hz, 852 Hz, 941 Hz) and one frequency of the high group (1209 Hz, 1336 Hz, 1477Hz) and represents a unique symbol. What should I do first?

here's the format..

function [flow fhigh]=mydtmf(x)

## The Attempt at a Solution

the output must produce something like this...

[flow fhigh]=mydtmf(1)

flow =

697

fhigh =

1209

>> [flow fhigh]=mydtmf(2)

flow =

697

fhigh =

1336

all help would be deeply appreciated.