Directional ribbon microphone assembly

Patent metadata

Field	Value
Publication number	US-11917381-B2
Application number	US-202217668132-A
Country	US
Kind code	B2
Filing date	Feb 9, 2022
Priority date	Feb 15, 2021
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A ribbon microphone assembly may include a ribbon capsule assembly, an amplifier connected to the capsule assembly, an analog-to-digital converter connected to the amplifier, a digital signal processor connected to the analog-to-digital converter to compensate for an on-axis frequency response caused by a directional polar response of the ribbon microphone assembly, and a USB output port.

First claim

The invention claimed is:

1. A ribbon microphone assembly comprising:
a capsule comprising:
at least two magnets;
a ribbon diaphragm positioned between the at least two magnets; and
a transformer connected to the ribbon diaphragm; and

a housing connected to the capsule comprising:
a circuit board connected to the transformer comprising:
an amplifier configured to receive a sound signal from the transformer and generate an amplified sound signal;
an analog to digital converter configured to receive the amplified sound signal and generate a digital sound signal; and
a digital signal processor configured to receive the digital sound signal, compensate for an on-axis frequency response caused by a directional polar response of the ribbon microphone assembly, and generate a processed sound signal.

2. The ribbon microphone assembly according to claim 1 , further comprising a USB port configured to output the processed sound signal.

3. The ribbon microphone assembly according to claim 2 , further comprising an external line return (XLR) output port configured to output the processed sound signal.

4. The ribbon microphone assembly according to claim 1 , further comprising an external line return (XLR) port configured to output the processed sound signal.

5. The ribbon microphone assembly according to claim 1 , wherein the digital signal processor comprises a computing device.

6. The ribbon microphone assembly according to claim 1 , wherein the digital signal processor is configured to attenuate, based on the directional polar response of the ribbon microphone assembly, at least one frequency represented by the digital sound signal.

7. The ribbon microphone assembly according to claim 1 , wherein the digital signal processor is configured to boost, based on the directional polar response of the ribbon microphone assembly, at least one frequency represented by the digital sound signal.

8. The ribbon microphone assembly according to claim 1 , wherein the ribbon microphone assembly is configured to receive, via USB and from a user device, an indication of a frequency compensation filter, and wherein the digital signal processor is configured to generate the processed sound signal at least by applying the frequency compensation filter.

9. The ribbon microphone assembly according to claim 1 , further comprising a control accessible from an exterior of the housing, and configured to receive a user selection of a frequency compensation filter, wherein the digital signal processor is configured to generate the processed sound signal at least by applying the frequency compensation filter.

10. The ribbon microphone assembly according to claim 1 , wherein the directional polar response is at least one of: a bidirectional polar response, a cardioid polar response, a hypercardioid polar response, or a variable polar response.

11. A system comprising:
a ribbon microphone capsule tuned for a directional polar response and configured to receive a sound signal;
an amplifier configured to receive the sound signal from the ribbon microphone capsule and generate an amplified sound signal;
an analog to digital converter configured to receive the amplified sound signal and generate a digital sound signal; and
a digital signal processor configured to receive the digital sound signal, compensate for an on-axis frequency response caused by the directional polar response of the ribbon microphone capsule, and generate a processed sound signal.

12. The system according to claim 11 , wherein the ribbon microphone capsule further comprises a control accessible from an exterior of a housing and configured to receive a user selection of a frequency compensation filter, wherein the digital signal processor is configured to generate the processed sound signal at least by applying the frequency compensation filter.

13. The system according to claim 11 , wherein the ribbon microphone capsule is configured to receive, via USB and from a user device, an indication of a frequency compensation filter, and wherein the digital signal processor is configured to generate the processed sound signal at least by applying the frequency compensation filter.

14. The system according to claim 11 , further comprising a USB port configured to output the processed sound signal.

15. The system according to claim 11 , wherein the digital signal processor is configured to attenuate or boost, based on the directional polar response of the ribbon microphone capsule, at least one frequency represented by the digital sound signal.

16. A ribbon microphone assembly comprising:
a ribbon diaphragm; and
circuitry configured to generate, based on a first signal from the ribbon diaphragm, a second signal by at least compensating for an on-axis frequency response associated with a directional polar response of the ribbon microphone assembly.

17. The ribbon microphone assembly of claim 16 , wherein the first signal comprises an analog signal and the second signal comprises a digital signal.

18. The ribbon microphone assembly of claim 16 , wherein the circuitry comprises:
an amplifier configured to amplify the first signal to generate an amplified first signal;
an analog-to-digital converter configured to digitize the amplified first signal to generate a digitized first signal; and
a digital signal processor configured to process the digitized first signal to generate the second signal.

19. The ribbon microphone assembly of claim 16 , wherein the circuitry is configured to receive an indication of a user-selected frequency compensation filter and to generate the second signal by at least applying the user-selected frequency compensation filter.

20. The ribbon microphone assembly of claim 16 , wherein the user-selected frequency compensation filter comprises at least one of the group consisting of an attenuation of at least one frequency represented by the first signal or a boost of at least one frequency represented by the first signal.

Assignees

• Shure Acquisition Holdings Inc

Inventors

• Grosz Steven R
• Grigg Benjamin Jay

Classifications

• H04R3/04 Primary

  for correcting frequency response · CPC title

• G06F3/165

  Management of the audio stream, e.g. setting of volume, audio stream path · CPC title

• H03F3/183

  with semiconductor devices only · CPC title

• H04R1/04

  Structural association of microphone with electric circuitry therefor (in electric hearing aids H04R25/00) · CPC title

• H04R1/326 Primary

  for microphones (H04R1/34 and H04R1/40 take precedence) · CPC title