O'Reilly logo

Real-Time Digital Signal Processing by Nasser Kehtarnavaz

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

CHAPTER 6

Fixed-Point vs. Floating-Point

One important feature that distinguishes different DSP processors is whether their CPUs perform fixed-point or floating-point arithmetic. In a fixed-point processor, numbers are represented and manipulated in integer format. In a floating-point processor, in addition to integer arithmetic, floating-point arithmetic can be handled. This means that numbers are represented by the combination of a mantissa (or a fractional part) and an exponent part, and the CPU possesses the necessary hardware for manipulating both of these parts. As a result, in general, floating-point processors are more expensive and slower than fixed-point ones.

In a fixed-point processor, one needs to be concerned with the dynamic ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required