The Analog to Digital Conversion Process

Hi I am Arnold Greyling from Johannesburg in South Africa. This is my peer review assignment for week 2 of the Introduction To Music Production course at Coursera.org. I will be discussing the Analog to Digital Conversion Process.

Introduction

Analog to Digital conversion is converting a physical value (voltage) to a digital value that represents that physical value. The following aspects of the Analog to Digital Conversion Process will be covered:
  • Representation of data in a computer and Word Length
  • Choosing the correct word length
  • Sampling Frequency
  • Choosing your Sampling Frequency
  • The Analog to Digital Conversion Process is also known as sampling.

    Representation of data in a computer

    Data is always represented in a computer as a collection of binary bits. A bit represents a value of “0″ or “1″. The bits are combined into bytes or words representing numeric values. A byte is normally understood as 8 bits. A word may have different lengths and the number of values that can be represented by a word is dependent on the number of bits in the word. The number of bits in the word is also known as word-length. The number of values is always the power of two of the word-length. See the table below for the number of values represented by often used word-lengths. more....

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    HOWTO: Recording an Acoustic Instrument

    Hi I am Arnold Greyling from Johannesburg in South Africa. This is my peer review assignment for week 1 of the Introduction To Music Production course at Coursera.org. I will be showing you how to record an acoustic instrument in a typical home studio. I will use the following equipment in this howto:
  • An acoustic guitar.
  • A Samson C2 condenser microphone.
  • Various cables.
  • A Steinberg UR22 USB audio interface.
  • A Macbook Pro Computer.
  • Garageband a Digital Audio Workstation (DAW) that Apple supplies free to Mac users.
  • This Howto will focus on setting up the equipment rather than the final recording and processing using the DAW. more....

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    More About Batteries

    It has been ages since I wrote anything on this blog, mostly due to too much procrastination. In 2009 I wrote Battery Centre needs the Battery University. The amount of hits this post gets is way more than anything else on the blog. Most of us deal with re-chargeable batteries every day so I though I will do my bi-yearly post again on batteries. Continue reading

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    WordPress does LaTeX

    While I was setting up another wordpress site today, I found out to my great surprise that WordPress can actually do \LaTeX markup by simply installing the jetpack plugin.

    For those that don’t know, \LaTeX is a computer typesetting system that really shines for difficult typesetting problems like mathematical formulas and scientific text. For more detail see What are \TeX \LaTeX and friends
    Continue reading

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    Battery Centre needs the Battery University

    About two and a half years ago Battery Centre sold me me a silver calcium battery for my car. According to them silver calcium batteries are the best thing in lead acid battery technology since Gaston Planté made the first one in 1859.

    They are probably right and most new cars will be fitted with one and the battery should last 3 to 5 years. If you have an older car things are not that simple. If your older car was fitted with a “hybrid” or plain lead acid battery originally, you will find that a silver calcium battery will probably not give you the life expected from it.

    Continue reading

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