Tone control circuitry having a frequency characteristic dependent on the input signal level

摘要: Level-controlled tone control circuit intended to be connected between a preamplifier on the one hand and final amplifier other of an audio circuit, this comprising (2) (3), being designed set depending input signal level applied, such that characteristic is continuously adjusted isophones human ear, whilst part required correction approximately repetitive for different sound pressures included in as fixed (4), so remaining characteristics can simpler order. With control, surprisingly good dynamic adjustment reproduction varying loudness reproduced piece music obtained.