A dual-tone multi-frequency (DTMF) system is used to produce signals that represent the dialed digits in a telephone system. A combination of a horizontal frequency and a vertical frequency is produced whenever a button is pressed on the keypad. The figure below shows a telephone keypad and the different frequencies used. 697 Hz 770 Hz 852 Hz 941 Hz 1209 Hz 1336 Hz 1477 Hz 2 1 3 4 5 6 7 # 8 9 0 * Generate the DTMF tone decoder that will take an audio file the DTMF signal of your student number. The student number must be presented as one complete string (e.g. 2020123456)

A dual-tone multi-frequency (DTMF) system is used to produce signals that represent the dialed digits in a telephone system. A combination of a horizontal frequency and a vertical frequency is produced whenever a button is pressed on the keypad. The figure below shows a telephone keypad and the different frequencies used. 697 Hz 770 Hz 852 Hz 941 Hz 1209 Hz 1336 Hz 1477 Hz 2 1 3 4 5 6 7 # 8 9 0 * Generate the DTMF tone decoder that will take an audio file the DTMF signal of your student number. The student number must be presented as one complete string (e.g. 2020123456)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

In this problem, you are asked to write a single MATLAB code that displays the value for 100*π in a few different formats
Solve using MATLAB (please do not use the other answer to this question)
Use Matlab, Please
Only on MATLAB. CODE WITH OUTPUT
solve in matlab d-g Note: The output argument n is the sample index which specifies the location of each sample stored in x
Write a code using wolfram mathematica. Please show me how to do it
Please use MATLAB to solve the problem.
please solve it all by using matlab showing the code
Please solve the following matlab question
Using Matlab, code the following:The paper cup has a bottom radius R1, top radius R2 = l.5(R1), height (h), volume V = 716 cm3 ,and surface area (S). The height, volume, and surface area of the cup are given by: V =πh(R1^2+R2^2+R1R2)/3, S = π R1^2+ π (R1+R2)√((R2 − R1)^2 + h^2). Determine R1, R2, and S of the paper cups with heights h = 8, 10, 12, 14, and 16 cm. • Method 1: Simulate Equations without using a for loop. • Method 2: Simulate Equations using a for loop. Display results to the screen tabulated Hint: You may need to transpose the vectors before printing to the screen.
Write a program using matlab code.
need matlab code