Turocy & Watson, LLP
Digital filter device
A digital filter device that filters a digital sound signal input to an input terminal and outputs an output digital signal from an output terminal, has a peak value controlling circuit compares a first gain multiplier value and a second gain multiplier value with each other, and replaces a filter coefficients stored in a first coefficient register with a new filter coefficients stored in a second coefficient register at a timing when the gain multiplier value applied to a gain multiplier becomes zero or becomes closest to zero for the first time during shifting the gain multiplier value from a first gain multiplier value to a second gain multiplier value if said first gain multiplier value and said second gain multiplier value are different in sign.
Kabushiki Kaisha Toshiba
H H
H03H H03H
additional inventional
Shinichi Yasuyuki Hiroshi
Nakamura Suzuki Satoh