1980-09-11
1983-05-03
Popek, Joseph A.
H04R 300
Patent
active
043821588
ABSTRACT:
A tone control circuit for use in audio equipments includes an attenuating high pass filter (typically, a CR filter), an attenuating low pass filter, a boosting high pass filter, a boosting low pass filter and at least an operational amplifier for tone control. The high pass filters extract a treble component from an audio input signal for emphasizing or attenuating treble response, whereas the low pass filter extract a bass component of the audio input signal for emphasizing or attenuating bass response. The mid-range component of the audio input signal prevented from entering the filters by virtue of a bypass circuit interposed between a source of the audio input signal and the operational amplifier.
REFERENCES:
patent: 3816661 (1974-06-01), Huszty et al.
patent: 3950711 (1976-04-01), Ohkawa
Ohshita Akihiro
Okuno Keizo
Popek Joseph A.
Sharp Kabushiki Kaisha
LandOfFree
Tone control of the operational type does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tone control of the operational type, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tone control of the operational type will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1209605