US Patent Issued to Roland on April 22 for "Audio processing device, amplifier device, and audio processing method" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,284,496, issued on April 22, was assigned to Roland Corp. (Shizuoka, Japan).

"Audio processing device, amplifier device, and audio processing method" was invented by Toshiyuki Ochi (Shizuoka, Japan) and Yoshinobu Morimoto (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An audio processing device includes: a first low-pass filter (LPF) to which an audio signal is input; a circuit to which the audio signal is input, including a first high-pass filter (HPF) and a preamplifier; a second HPF to which the audio signal is input; a second LPF to which an output signal of the circuit is input; an extractor, extracting each of an output signal of t...