Gregory M Canfield

US Patent:

20070191977, Aug 16, 2007

Filed:

Jan 17, 2007

Appl. No.:

11/623846

Inventors:

Mark W. Gilbert - Park Ridge IL, US
Gregory H. Canfield - Niles IL, US

Assignee:

Shure Acquisition Holdings Inc. - Niles IL

International Classification:

G06F 17/00
H04B 1/00

US Classification:

700 94, 381119

Abstract:

The invention provides a digital automixer system that includes a master processing unit and at least one non-master processing unit that are interconnected. The non-master processing unit obtains a first microphone signal and determines a first basic level measurement and a network submix audio signal. The master processing unit obtains a second microphone signal and determines a second basic level measurement, and obtains the first basic level measurement and the network submix audio signal from the non-master processing unit. The master processing unit further forms a final mix audio signal from the second microphone signal and the network submix audio signal and determines a gating control signal for the digital automixer system. The master processing unit may also delay the second basic level measurement to compensate for a network delay. The invention also provides a digital automixer system that includes a plurality of master processing units.

US Patent:

20230104602, Apr 6, 2023

Filed:

Oct 4, 2022

Appl. No.:

17/960009

Inventors:

- Niles IL, US
Gregory H. Canfield - Niles IL, US

International Classification:

H04R 3/00
H04R 3/04
H04R 5/04

Abstract:

Systems and methods are disclosed for networked audio automixing using array microphones and an aggregator unit that participate in making a common gating decision to determine which channels to gate on and off. Through the use of such a network of array microphones having the capability to generate submix audio signals and reduced bandwidth metrics, as well as AEC processing capability, array microphone lobe selection can be enhanced while maximizing signal-to-noise ratio, increasing intelligibility, and increasing user satisfaction.

US Patent:

20180310096, Oct 25, 2018

Filed:

Jun 25, 2018

Appl. No.:

16/017619

Inventors:

- Niles IL, US
Gregory H. Canfield - Niles IL, US
Mark Gilbert - Palatine IL, US

International Classification:

H04R 1/32
H04R 3/00
H04R 3/04
H04R 19/01
H04R 19/04

Abstract:

Offset cartridge microphones are provided that include multiple unidirectional microphone cartridges mounted in an offset geometry. Various desired polar patterns and/or desired steering angles can be formed by processing the audio signals from the multiple cartridges, including a toroidal polar pattern. The offset geometry of the cartridges may include mounting the cartridges so that they are immediately adjacent to one another and so that their center axes are offset from one another. The microphones may have a more consistent on-axis frequency response and may more uniformly form desired polar patterns and/or desired steering angles by reducing the interference and reflections within and between the cartridges.

US Patent:

20170230748, Aug 10, 2017

Filed:

Dec 19, 2016

Appl. No.:

15/383658

Inventors:

- Niles IL, US
Gregory H. Canfield - Niles IL, US
Mark Gilbert - Palatine IL, US

International Classification:

H04R 1/32
H04R 19/04
H04R 19/01
H04R 3/00
H04R 3/04

Abstract:

Offset cartridge microphones are provided that include multiple unidirectional microphone cartridges mounted in an offset geometry. Various desired polar patterns and/or desired steering angles can be formed by processing the audio signals from the multiple cartridges, including a toroidal polar pattern. The offset geometry of the cartridges may include mounting the cartridges so that they are immediately adjacent to one another and so that their center axes are offset from one another. The microphones may have a more consistent on-axis frequency response and may more uniformly form desired polar patterns and/or desired steering angles by reducing the interference and reflections within and between the cartridges.

US Patent:

20160323667, Nov 3, 2016

Filed:

Apr 30, 2015

Appl. No.:

14/701042

Inventors:

- Niles IL, US
Gregory H. Canfield - Niles IL, US
Mark Gilbert - Palatine IL, US

International Classification:

H04R 1/32
H04R 3/00
H04R 1/08

Abstract:

Offset cartridge microphones are provided that include multiple unidirectional microphone cartridges mounted in an offset geometry. Various desired polar patterns and/or desired steering angles can be formed by processing the audio signals from the multiple cartridges, including a toroidal polar pattern. The offset geometry of the cartridges may include mounting the cartridges so that they are immediately adjacent to one another and so that their center axes are offset from one another. The microphones may have a more consistent on-axis frequency response and may more uniformly form desired polar patterns and/or desired steering angles by reducing the interference and reflections within and between the cartridges.