Patent Number: 6,295,014

Title: System for processing one-bit audio signals

Abstract: An audio signal processor for processing 1-bit signals, comprises an input 40 for receiving a 1-bit signal, means 41, 42 for applying a predetermined filter characteristic to the 1-bit signal whereby the signal is also converted to an n-bit signal where n is greater than one, means 43 for determining the absolute value of the n-bit signal, means 46, 51 for producing a dynamics control signal dependent on the said absolute value, means 48 for applying the dynamics control signal to the 1-bit input signal, and means 49 for requantizing the dynamics controlled signal as a 1-bit signal and shaping the noise in the requantised 1-bit signal. Circuits for producing LOG base 2 and the corresponding anti-log are also disclosed.

Inventors: Eastty; Peter Charles (Eynsham, GB), Thorpe; Peter Damien (Botley, GB), Sleight; Christopher (Chipping Norton, GB)

Assignee: Sony United Kingdom Limited

International Classification: G06F 7/556 (20060101); G06F 7/48 (20060101); H03M 7/50 (20060101); H03M 003/00 ()

Expiration Date: 09/25/2018