Chapter 12 - Digital Audio

Correction (pages 135/136): The section on Bit Depth Size should read as follows -

Bit Depth Size

The difference in file size between 16 bit and 24 bit is 150%. For example, a digital audio file that has a bit depth of 24 is one and a half times the file size of an audio file with the length and same sample rate with a bit depth of 16.

Originally, this chapter mentioned the difference between 16 Bit /44.1 KHz and 24 Bit / 96KHz files which is approximately 300%. It seemed unnecessary and confusing to reference two different sample rates in a section that dealt with bit depth. So, this chapter was updated and a comparison chart of file sizes was added to page 56. As a result, the corrected percentage was overlooked during the final read.

Sorry for the confusion! Many thanks to Gregor Arnold who spotted the error.

The following is a sample paragraph from The Sound Effects Bible.

Making Sense of Ones and Zeros

Digital audio is nothing more than ones and zeros. The process of turning analog information into digital information is called digitizing. An audio signal is analyzed by an A/D (analog to digital) converter that translates the analog audio signal into digital information. Conversely, a D/A (digital to analog) converter takes the digital information and translates it into an analog audio signal. Both converters are found inside digital field recorders and sound cards.

***This section is under development. Check back for samples of the sound effects discussed in each chapter.***