Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Consider the audio file speech.wav and read it to MATLAB using the wavread function. The sampling frequency was 44.1 kHz and the samples were coded

Consider the audio file “speech.wav” and read it to MATLAB using the wavread function. The sampling frequency was 44.1 kHz and the samples were coded using a uniform quantizer with 16 bits. You can listen to the audio file using the MATLAB function sound.
1. Apply to the signal a uniform quantizer using 32 levels and 256 levels. For each case determine the signal-to quantization noise ratio. Apply then a non-uniform quantizer using the A-law with A = 20 and A = 87.6. And determine the signal-to-quantization noise ratio for these cases.
2. Consider now that the signal is attenuated 10, 20, 30, and 40 dB. For each of these cases, determine the signal-to-quantization noise ratio, considering a uniform quantizer and a non-uniform quantizer (A = 87.6) both with 256 levels.
3. Draw a graph with the results obtained and comment.

Step by Step Solution

3.56 Rating (156 Votes )

There are 3 Steps involved in it

Step: 1

ANSWER 1 For the uniform quantizer with 32 levels the signaltoquantization noise ratio is approximat... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Computer Networking A Top-Down Approach

Authors: James F. Kurose, Keith W. Ross

5th edition

136079679, 978-0136079675

More Books

Students also viewed these Accounting questions

Question

Apply equivocality to an organization with which you are familiar.

Answered: 1 week ago