MICROPHONES WITH EQUAL SENSITIVITY

• US 20090262956A1
• Filed: 04/20/2009
• Published: 10/22/2009
• Est. Priority Date: 10/01/2002
• Status: Abandoned Application

• Current Assignee: AKG Acoustics GmbH (Samsung Electronics Co. Ltd.)
• Original Assignee: AKG Acoustics GmbH (Samsung Electronics Co. Ltd.)
• Inventors: Solderits, Thomas
• Application Number:
  US12/426,503
• Publication Number:
  US 20090262956A1
• Time in Patent Office: Days
• US Class Current: 381/111
• CPC Class Codes: H04R 1/04 Structural association of microphone with electric circuitry therefor in deaf-aid sets H04R25/00
• CPC Class Codes: H04R 29/006 Microphone matching
• CPC Class Codes: H04R 3/00 Circuits for transducers , loudspeakers or microphones
• CPC Class Codes: H04R 31/00 Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182
• CPC Class Codes: Y10T 29/49005 Acoustic transducer

Abstract

A microphone and a method for producing a microphone with a sensitivity stipulated within narrow limits. The microphone each has a microphone capsule and an amplifier. A network of passive components, preferably resistors, is allocated to the amplifier. The sensitivity of the microphone is measured and the passive components are then disconnected to change the amplification of amplifier in the desired manner.

Claims

1. A Method for producing a microphone with a stipulated sensitivity within narrow limits, the microphone having a microcapsule and an amplifier, the method comprising the steps of:

providing the amplifier with a network of passive components;

measuring the sensitivity of the microphone; and

disconnecting the passive components to alter amplification of the amplifier so that the sensitivity of the microphone lies within a the desired range.

2. The method according to claim 1, wherein the passive components are resistors.

3. The method according to claim 1, wherein the disconnecting step includes destroying the passive components with a laser beam.

4. The method according to claim 1, wherein the disconnecting step includes destroying electrical feed lines to the passive components to be disconnected.

5. A microphone having a sensitivity stipulated within narrow limits, comprising:

a microphone capsule;

an amplifier; and

a network of passive components allocated to the amplifier, at least one of the passive components being disconnected.

6. The microphone according to claim 5, wherein the passive components are resistors.

7. The microphone according to claim 5, wherein disconnection of the disconnected component occurs by destruction of an electrical feed line of the component.

8. The microphone according to claim 5, wherein the passive component is at least one of a capacitive component and an inductive component.