US 9,813,791 B1
Active phantom-powered ribbon microphone with switchable proximity effect response filtering for voice and music applications
Rodger Cloud, Tuscon, AZ (US)
Filed by Rodger Cloud, Tuscon, AZ (US)
Filed on Dec. 7, 2015, as Appl. No. 14/961,632.
Application 14/961,632 is a continuation of application No. 14/158,863, filed on Jan. 19, 2014, granted, now 9,210,508.
Application 14/158,863 is a continuation in part of application No. 13/655,840, filed on Oct. 19, 2012, granted, now 9,306,519.
Application 13/655,840 is a continuation in part of application No. 13/854,839, filed on Apr. 1, 2013, granted, now 9,167,327, issued on Oct. 20, 2015.
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 3/00 (2006.01); H04R 1/04 (2006.01); H04R 3/10 (2006.01); H04R 1/06 (2006.01)
CPC H04R 1/04 (2013.01) [H04R 1/06 (2013.01); H04R 3/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated phantom-powered inline preamplifier with proximity effect response filtering inside an active ribbon or dynamic microphone casing, the integrated phantom-powered inline preamplifier comprising:
a set of input terminals coupled to the active ribbon or dynamic microphone casing, wherein the set of input terminals are configured to receive a microphone electrical signal from a passive circuitry in the active ribbon or dynamic microphone casing, and wherein the set of input terminals is also coupled to one or more transistors inside the integrated phantom-powered inline preamplifier;
a set of output terminals configured to load phantom power and also configured to transmit an amplified signal from the microphone electrical signal, wherein the set of output terminals is coupled to the one or more transistors inside the integrated phantom-powered inline preamplifier;
a phantom-powered preamplifier gain circuit comprising at least one of the one or more transistors and a resistor-capacitor network;
a full frequency response and low frequency response adjustment interface that activates a full frequency response mode or a high-pass filter mode; and
a high-pass filter circuit coupled to the full frequency response and low frequency response adjustment interface, wherein the high-pass filter circuit is integrated inside the active ribbon or dynamic microphone casing.