Content and Performance Specifications
Content
Vector
Operations: |
Initialization, Arithmetic, Logical, Threshold, Square Root, Standard Deviation, Exponential
|
Windowing:
|
Bartlett, Blackman, Hamming, Hann, Kaiser
|
Transforms: |
DFT, FFT
|
Filters:
|
FIR, IIR, LMS
|
Sample
Generation:
|
Pseudo Random, Uniform, Gaussian
|
Correlation:
|
Autocorrelation Biased, Cross Correlation
|
Representative Performance Specifications
Selected Functions
|
Execution Times
for Pentium®
Single Precision Floating Point
|
Execution Times
for Pentium
with MMX,™ the Pentium
Technology
16 Bit Integer Performance
| Units |
1024 dim. Add | 3.9
| 0.6 |
clock/element |
1024 dim. Multiply |
3.9 | 0.6
| clock/element |
1024 dim. Minimum | 3.1
| 0.7 |
clock/element |
1024 dim. Square Root |
47.3 | 9.0
| clock/element |
256 Pt Complex FFT
| 137.8 |
294.5, 120.2* | microseconds
|
256 Dim Hamming Window
| 87.3 |
9.8 | microseconds
|
1024 dim. Dot Product |
41.0 | 6.0
| microseconds
|
32 tap x 1024 dim. FIR Filter
| 1225.0
| 519.0
| microseconds
|
32 tap x 1024 dim. Convolution
| 1648.0
| 536.0
| microseconds
|
* Input constrained to range [+-512], max error < 0.1% for 256 points FFT.
The performance specifications above are results
averaged over many repetitions of each function call. Data is
in cache. Results were measured using a 150MHz Pentium processor
PC with a 256K second level cache and a 150 MHz Pentium with
MMX processor PC with a 256K second level cache. The tests were
run under Windows* 95.
|