HEADSET AND EARPHONE

• US 20130082691A1
• Filed: 09/30/2011
• Published: 04/04/2013
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: Sennheiser Electronic GmbH & Company KG
• Original Assignee: Oliver Gelhard
• Inventors: GELHARD, Oliver
• Granted Patent: US 9,113,245 B2
• Time in Patent Office: Days
• US Class Current: 324/200
• CPC Class Codes: G10K 11/17857 Geometric disposition, e.g. placement of microphones
• CPC Class Codes: G10K 11/17881 the reference signal being an acoustic signal, e.g. recorded with a microphone
• CPC Class Codes: G10K 11/17885 additionally using a desired external signal, e.g. pass-through audio such as music or speech
• CPC Class Codes: G10K 2210/1081 Earphones, e.g. for telephones, ear protectors or headsets
• CPC Class Codes: H04R 1/1083 Reduction of ambient noise active noise reduction per se G10K11/175; protective devices for the ear, e.g. providing acoustic protection A61F11/06
• CPC Class Codes: H04R 2460/01 Hearing devices using active noise cancellation
• CPC Class Codes: H04R 25/356 Amplitude, e.g. amplitude shift or compression
• CPC Class Codes: H04R 25/505 using digital signal processing
• CPC Class Codes: H04R 5/033 Headphones for stereophonic communication details thereof, e.g. relating to batteries, cables or control elements H04R1/10

Abstract

A headset or earphone is provided, having an electro-acoustic reproduction transducer with an oscillator coil arranged in an axis. An amplifier is coupled to the electro-acoustic reproduction transducer. The headset or earphone also has a magnetic interference sensor for measuring a magnetic interference field. A correction unit, for analyzing an output of the magnetic interference sensor and for producing a compensation signal, is coupled to the magnetic interference sensor. In addition, the headset or earphone also includes an adding unit for adding the compensation signal to an input signal and for outputting the result to the amplifier.

Claims

1. A headset or earphone, comprising

an electro-acoustic reproduction transducer having an oscillator coil arranged in an axis;

an amplifier coupled to the electro-acoustic reproduction transducer;

a magnetic interference sensor for measuring a magnetic interference field;

a correction unit, coupled to the magnetic interference sensor, for analyzing an output of the magnetic interference sensor and for producing a compensation signal; and

an adding unit for adding the compensation signal to an input signal and for outputting the result to the amplifier).

2. The headset or earphone according to claim 1;

wherein the magnetic interference sensor is arranged adjacent or in close proximity to the electro-acoustic reproduction transducer.

3. The headset or earphone according to claim 1;

wherein the magnetic interference field sensor is arranged in a same axis as the oscillator coil of the electro-acoustic reproduction transducer.

4. The headset or earphone according to claim 2;

wherein the magnetic interference field sensor is arranged in a same axis as the oscillator coil of the electro-acoustic reproduction transducer.

5. A headset or earphone, comprising:

an active noise reduction unit adapted to actively compensate any noise detected by a microphone;

an electro-acoustic reproduction transducer having an oscillator coil;

an amplifier coupled to the electro-acoustic reproduction transducer;

a magnetic interference sensor for measuring a magnetic interference field;

a correction unit coupled to the magnetic interference sensor for analyzing an output of the magnetic interference sensor and for producing a compensation signal; and

an adding unit for adding the compensation signal and an output signal of the active noise reduction unit to an input signal and for outputting the result to the amplifier.