Video game controller with noise canceling logic

• US 7,970,147 B2
• Filed: 04/07/2004
• Issued: 06/28/2011
• Est. Priority Date: 04/07/2004
• Status: Active Grant

• Current Assignee: Sony Interactive Entertainment Inc. (Sony Group Corp.)
• Original Assignee: Sony Computer Entertainment Incorporated (Sony Group Corp.)
• Inventors: Mao, Xiadong
• Primary Examiner(s): Faulk, Devona E
• Application Number:
  US10/820,469
• Publication Number:
  US 20050226431A1
• Time in Patent Office: 2,638 Days
• Field of Search: 463/35, 463/37, 381/92, 381/71.11, 381/17, 381 61- 63, 381/111, 381/122, 700/94, 345156-157, 345/161, 345/163, 273/148.B, 273/148.R
• US Class Current: 381/61
• CPC Class Codes: G10L 21/0208 Noise filtering

Abstract

A method for reducing noise disturbance associated with an audio signal received through a microphone is provided. The method initiates with magnifying a noise disturbance of the audio signal relative to a remaining component of the audio signal. Then, a sampling rate of the audio signal is decreased. Next, an even order derivative is applied to the audio signal having the decreased sampling rate to define a detection signal. Then, the noise disturbance of the audio signal is adjusted according to a statistical average of the detection signal. A system capable of canceling disturbances associated with an audio signal, a video game controller, and an integrated circuit for reducing noise disturbances associated with an audio signal are included.

Claims

1. A video game controller in communication with a computing device, comprising:

a microphone affixed to the video game controller, the microphone configured to detect an audio signal that includes a target audio signal in a far field relative to the microphone and disturbance noise in a near field relative to the microphone;

logic to process the audio signal, the logic including,

logic for executing signal decorrelation on the audio signal, the signal decorrelation acting to reduce an amplitude of the target audio signal while magnifying the disturbance noise;

logic for down sampling the decorrelated audio signal;

detection signal logic to generate a detection signal through an even ordered derivative that is less than or equal to a tenth derivative that is applied to the decorrelated and down sampled audio signal; and

disturbance cancellation logic for removing disturbance noise from the audio signal through analysis of the detection signal.

2. The video game controller of claim 1, wherein the disturbance cancellation logic includes,

logic for identifying if a signal sequence of the disturbance noise is associated with the target audio signal.

3. The video game controller of claim 2, further comprising multiple microphones, wherein each of the multiple microphones is defined to independently identify whether the disturbance noise is above a threshold level.

4. The video game controller of claim 1, wherein the down sampling reduces an amount of data associated with the detection signal, as compared to the audio signal, by a factor of ten.

5. Non-transitory computer readable media having program instructions for processing an audio signal obtained from a video game controller having a microphone affixed thereto, the microphone configured to detect an audio signal that includes a target audio signal in a far field relative to the microphone and disturbance noise in a near field relative to the microphone, the computer readable media further having,

program instructions to process the audio signal, the program instructions including,

instructions for executing signal decorrelation on the audio signal, the signal decorrelation acting to reduce an amplitude of the target audio signal while magnifying the disturbance noise;

instructions for down sampling the decorrelated audio signal;

detection signal instructions to generate a detection signal through an even ordered derivative that is less than or equal to a tenth derivative that is applied to the decorrelated and down sampled audio signal; and

disturbance cancellation instructions for removing disturbance noise from the audio signal through analysis of the detection signal.

6. The non-transitory computer readable media of claim 5, wherein the disturbance cancellation instructions include,

program instructions for identifying if a signal sequence of the disturbance noise is associated with the target audio signal.

7. The non-transitory computer readable media of claim 5, wherein the down program instructions for down sampling reduces an amount of data associated with the detection signal, as compared to the audio signal, by a factor of ten.