Audio headphone provided with device to prevent audio feedback
First Claim
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1. A headphone including an ear muff provided with an active noise reduction circuit, the ear muff, comprising:
- a support structure having a microphone and loudspeaker attached thereto;
a housing structure having a first side and a second side, said first side facing said support structure at a finite distance from said support structure to produce an enclosure between said support structure and said housing structure, said loudspeaker and said microphone provided within said enclosure;
an inflexible disc facing said second side of said housing; and
a cushion enclosing said support structure, said housing structure and said flexible disc;
wherein when pressure is applied to said cushion, the distance between said support structure and said housing structure does not change due to the inclusion of said inflexible disc, thereby preventing audio feedback.
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Abstract
An ear muff used with a headset containing two ear muffs. Both of the ear muffs are provided with a loudspeaker and a microphone for sensing ambient noise. An active noise reduction (ANR) circuitry is utilized to cancel the ambient noise. An immobile or inflexible disc is provided within each ear muff for preventing the change of dimensions of an enclosure which includes the loudspeaker and microphone, thereby preventing audio feedback.
16 Citations
17 Claims
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1. A headphone including an ear muff provided with an active noise reduction circuit, the ear muff, comprising:
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a support structure having a microphone and loudspeaker attached thereto; a housing structure having a first side and a second side, said first side facing said support structure at a finite distance from said support structure to produce an enclosure between said support structure and said housing structure, said loudspeaker and said microphone provided within said enclosure; an inflexible disc facing said second side of said housing; and a cushion enclosing said support structure, said housing structure and said flexible disc; wherein when pressure is applied to said cushion, the distance between said support structure and said housing structure does not change due to the inclusion of said inflexible disc, thereby preventing audio feedback. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification