Understanding Complex-Domain, Floating-Point DSPs

Every day we use complex mathematics, hidden inside products. When we listen to a song from an MP3 player, we are using the Fast Fourier Transform (FFT), a “complex domain” algorithm. The best car and home entertainment system amplifiers have at least one Digital Signal Processor (DSP) performing complex math. Hands-free telephones have DSPs to perform acoustic echo canceling and background noise reduction using complex math.