Control of low frequency noise floor in upsampling

Details Control of low frequency noise floor in upsampling Control of low frequency noise floor in upsampling

2005-04-19

2005-04-19

Ingberg, Todd (Department: 2124)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

06883013

ABSTRACT:
Method and system for adjusting or controlling a noise floor of a filtered signal for low frequencies. A filtered digital signal, having M bits, is processed to form an one-bit XOR signal. This XOR signal is added to the filtered signal to produce a modified filtered signal. A selected number of LSB bits of the modified filtered signal is removed to form a dithered filtered signal with a noise floor that is reduced for low frequencies.

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