PCM redirects here. For other uses, see PCM (disambiguation). Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals. It is the standard form of digital audio in computers, compact discs, digital telephony and other digital audio applications. In a PCM stream, the amplitude of the analog signal is sampled regularly at uniform intervals, and each sample is quantized to the nearest value within a range of digital steps.
1 As well as MLA, APA papers are also double-spaced with 1-inch margins on each side. 2  APA guidelines recommend you to use readable and clear font, such as Times New Roman, 12 pt.  The main distinction of APA style is a ârunning headâ at the top of each page.
Writing a college paper in APA style only seems like a hassle. Being proficient with it will help you beyond any classroom. The format some university professors require is well-respected everywhere. Use this guide as a quick reference for the proper format for your paper and its sources. Use the standard page setup: 8.5 by 11 inch paper, with 1 inch margins on all sides. Compose a title page. The paper's title should appear on one line. The author's name should follow on the next.