Phase-linear audio-frequency switches, have amplifier circuits functioned at high impedance levels through choke coils that are attached with capacitors and resistors, and speakers connected with housing

摘要

The switches have a filtering circuit connected with a correction network, where phase-minimum branch signal is changed such that transfer function of a branch sum becomes constant. An audio-frequency region is formed on multiple paths. A resistor (R18) is utilized to correct a sum signal. Amplifier circuits are functioned at high impedance levels through choke coils that are attached with capacitors and resistors (R2, R4, R6). Speakers are connected with a housing. (Incomplete specification, abstract based on available information published by the patent office).