NOISE-CANCELING SOUND PLAYING STRUCTURE

• US 20090175463A1
• Filed: 01/08/2008
• Published: 07/09/2009
• Est. Priority Date: 01/08/2008
• Status: Abandoned Application

• Current Assignee: Fortune Grand Technology Inc.
• Original Assignee: Fortune Grand Technology Inc.
• Inventors: Chiang, Hsin-Yuan, Kuo, Yi-Wei, Lee, Ping-Yu
• Application Number:
  US11/970,554
• Publication Number:
  US 20090175463A1
• Time in Patent Office: Days
• US Class Current: 381/71.600
• CPC Class Codes: H04R 3/005 for combining the signals of two or more microphones specially adapted for hearing aids H04R25/407

Abstract

A noise-canceling sound playing structure includes a noise canceling mechanism having at least one filtering and phase-reversing unit, an amplifier, and a power supply unit; and a sound output mechanism having at least one enclosure. The enclosure has a first speaker arranged therein and connected to the amplifier, a second speaker arranged therein and connected to an external sound player, and a microphone mounted thereon and connected to the filtering and phase-reversing unit. A chamber is defined in the enclosure between the first and second speakers and the microphone. External noise signals are picked up by the microphone and sent to the noise canceling mechanism for processing at the filtering and phase-reversing unit and the amplifier to thereby produce phase-reversed signals, which are sent to the first speaker to cancel out external noise without being mixed with the musical sound transmitted from the external sound player to the second speaker.

Claims

1. A noise-canceling sound playing structure, comprising:

a noise canceling mechanism including at least one filtering and phase-reversing unit, an amplifier connected to the filtering and phase-reversing unit, and a power supply unit connected to the filtering and phase-reversing unit and the amplifier; and

a sound output mechanism including at least one enclosure, a first speaker arranged in each enclosure and electrically connected to the amplifier of the noise canceling mechanism, a second speaker arranged in each enclosure and electrically connected to an external sound player, and a microphone mounted on each enclosure and electrically connected to one corresponding filtering and phase-reversing unit in the noise canceling mechanism.

2. The noise-canceling sound playing structure as claimed in claim 1, wherein the noise canceling mechanism is located in the enclosure of the sound output mechanism.

3. The noise-canceling sound playing structure as claimed in claim 1, wherein the noise canceling mechanism is associated with the external sound player.

4. The noise-canceling sound playing structure as claimed in claim 1, wherein the sound output mechanism is a single-ear headphone.

5. The noise-canceling sound playing structure as claimed in claim 1, wherein the sound output mechanism is a dual-ear headphone set.

6. The noise-canceling sound playing structure as claimed in claim 1, wherein each enclosure includes a sound releasing section located near the first and the second speaker, and a locating section formed inside the enclosure for receiving the microphone therein.

7. The noise-canceling sound playing structure as claimed in claim 1, wherein the enclosure includes a sound releasing section located near the first and the second speaker, and a locating section formed outside the enclosure for receiving the microphone therein.

8. The noise-canceling sound playing structure as claimed in claim 1, wherein each microphone has a pick-up end located in the enclosure.

9. The noise-canceling sound playing structure as claimed in claim 1, wherein each microphone has a pick-up end located outside the enclosure.

10. The noise-canceling sound playing structure as claimed in claim 1, wherein each microphone has a pick-up end, and the microphone is located in the vicinity of the first and second speakers.

11. The noise-canceling sound playing structure as claimed in claim 1, wherein the sound output mechanism further includes at least a third speaker in each enclosure.