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Divisions ->Research & Development -> Technologies -> FFT
 
Technologies
Speech Compression
Echo Cancellation
Activity Detectors
FFT
Voice/Data/Fax Multiplexer
Modems
 
General purpose Cooley-Tacky FFT routines on Fixed Point implementations introduce bias in the spectrum calculation when Scaling is enabled , which in turn causes impulses in the IFFT reconstructed signals, causing a very annoying hum in voice applications. Danlaw provides a bias free version which is useful for voice applications. These are Optimized for TI c54xx processors.