Sometimes, some people claim they can actually hear the quantization error in compact disc recordings. What do you think? Is there truth to this claim?
Samples taken are then assigned numeric values that the computer or digital circuit can use in a process called quantization. The number of available values is determined by the number of bits (0's and 1's) used for each sample, also called bit depth or bit resolution . Each additional bit doubles the number of values available (1-bit samples have 2 values, 2-bit samples have 4 values, etc.). When a sample is quantized, the instantaneous snapshot of its analog amplitude has to be rounded off to the nearest available digital value. This rounding-off process is called approximation. The smaller the number of bits used per sample, the greater the distances the analog values need to be rounded off to. The difference between the analog value and the digital value is called the approximation or quantizing error as shown in the illustration below.
The greater the magnitude of approximation errors, the greater the level of digital or quantizing noise produced. The solution to reducing digital noise is to use larger sample word sizes (greater bit depth), which therefore correspond to the dynamic range of the system, since it affects the signal-to-noise ratio. (For digital systems, this is often measured as SQNR, or signal-to-quantization-noise-ratio.) A general rule of thumb is an added 6 dB of dynamic range for every additional bit used per sample. The original CD standard proposed by Sony was for a 14-bit sample size, with a dynamic range of only 84 dB, but was changed to 16 bits before inception.
Just as sample rate affects frequency response, sample size (i.e., bit depth) affects dynamic range, or the amplitude difference between the digital noise floor and the loudest possible sound before distortion.
The CD/DAT standard of 16-bit samples, with their impressive 65,536 values for quantizing, provide the theoretical playback system optimum of a 96 dB dynamic range.
Sometimes, some people claim they can actually hear the quantization error in compact disc recordings. What do you think...
Can people who lose their sight actually hear more sounds compared to people who can see? Use what you’ve read in the chapter and any outside resources to describe why or why not.
Why do you think some people fear public speaking? What are some methods to eliminate speaker apprehension? Do you have this fear? If so, why? If not, what do you do to prevent it? What are some tips found in chapter 14 that can help a nervous speaker overcome anxiety?
What do you think of when you hear the word Church? *This is for a religious class
Review the T accounts presented in Chapter 3. 1. What do you think of when you hear the word debit? What do you think of when you hear the word credit? 2. What does our textbook say about debits and credits? 3. How would you describe the left and right side of each type of Balance Sheet Account and Income Statement Account? 4. Our eBook describes how to calculate an account balance. Can you describe this process for the Cash account in your own...
What do you think are some of the economic goals of good governments? Do you think they can be achieved or at least impacted through budgeting? Explain.
philosophy Question In simple terms a logical fallacy is an error in reasoning but, its a little more than that it is believing in falsehoods or rejecting the truth. An example of logical fallacy that I can think of is in music. Sometimes when I go to concerts I will hear people argue about which brand is better. A common logical fallacy that occurs in the argument when one person says this band is better than another band simply because...
Performance enhancing drugs aren't just the drugs that you typically think of when you hear those words. These drugs can be any supplement/medication that is designed to give you an edge. That means that ritalin can be included in this category. For this week's "today I learned" I want you to do some research on a performance enhancing drug. You need to learn about why people take that drug, what the side effects are and how many people are believed...
Do you think leaders should help people get what they want: or do you think leaders should help people get what is right for them
What are some ways we can help patients avoid diseases? What conditions do you think are preventable, and what could you do to help prevent them? Do you think most patients are responsible for their own health, or is it a community issue?
What are some ways we can help patients avoid disease? What condition do you think are preventable, and what could you do to help prevent them?