Embedded software engineers typically prefer to design and prototype control systems in floating-point arithmetic, but final designs are usually implemented in fixed-point arithmetic
is often used for the computations because of the cost reasons--floating point calculations significantly increase the size of the design and make it more complex.
After testing numerous competing products, we found the Filter Design Toolbox provided the best range of fixed-point arithmetic
parameters, filter architectures and operational statistics," said Richard Hewitt, senior DSP and software consultant at Toracomm.
Any data word smaller than 40-bits or fixed-point arithmetic
substantially degrades the sound quality.
Engineers can use these blocks to quickly create PID controllers, select PID structure, include integrator anti-windup logic, convert from continuous-time to discrete-time domain, and prepare the controller for implementation on a processor using fixed-point arithmetic
The company is also presenting a paper titled, "Exploration of Least-Squares Solutions of Linear Systems of Equations with Fixed-Point Arithmetic
," on Monday November 14th, at 2:00 p.
Until now, performing matrix factorization and inversion in hardware has been difficult because the algorithms are complex and highly sensitive to numerical problems, particularly when using fixed-point arithmetic
preferred in high-performance ICs.
The DSP Studio Toolbox adds fixed-point arithmetic
to MATLAB and supports common processor-specific operations, such as multiply with shift and saturate.
Performance improvements have also been made to fixed-point arithmetic
when using 64-bit emulation systems.
A|RT Library provides a set of C++ data classes and operators that encapsulate the characteristics of fixed-point arithmetic
and that accurately account for quantization and overflow effects.
Most hardware implementation, on the other hand, is done using fixed-point arithmetic
because of significant cost-saving and increased performance.
16-bit and 32-bit fixed-point arithmetic
supported (rounding and