Google llc (20240185827). AMBIENT DETECTOR FOR DUAL MODE ANC simplified abstract
Contents
- 1 AMBIENT DETECTOR FOR DUAL MODE ANC
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 AMBIENT DETECTOR FOR DUAL MODE ANC - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 What are the key components of the active noise cancellation system described in the patent application?
- 1.11 How does the logic device determine ambient noise conditions in the active noise cancellation system?
- 1.12 Original Abstract Submitted
AMBIENT DETECTOR FOR DUAL MODE ANC
Organization Name
Inventor(s)
Govind Kannan of Irvine CA (US)
AMBIENT DETECTOR FOR DUAL MODE ANC - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240185827 titled 'AMBIENT DETECTOR FOR DUAL MODE ANC
Simplified Explanation
The patent application describes active noise cancellation systems and methods that utilize a feedforward path to cancel ambient noise by generating an anti-noise signal. The adaptive filter in the system is tuned based on ambient noise conditions determined by a logic device analyzing the reference signal.
- The system includes a feedforward path to generate an anti-noise signal.
- An adaptive filter is tuned based on ambient noise conditions.
- The logic device estimates fullband power and low-frequency power of the reference signal.
- Ambient noise conditions can include quiet background, wideband noise, and low-frequency dominant noise.
Potential Applications
This technology can be applied in:
- Noise-canceling headphones
- Automotive active noise cancellation systems
- Home audio systems
Problems Solved
- Reduction of ambient noise interference
- Improved audio quality in noisy environments
Benefits
- Enhanced listening experience
- Increased focus and concentration in noisy settings
- Improved communication in loud environments
Potential Commercial Applications
- Consumer electronics industry
- Automotive industry
- Aviation industry
Possible Prior Art
One possible prior art for this technology is the use of adaptive filters in noise-canceling headphones to reduce ambient noise.
What are the key components of the active noise cancellation system described in the patent application?
The key components of the active noise cancellation system include a feedforward path, an adaptive filter, a logic device, and ambient noise condition determination based on fullband and low-frequency power analysis of the reference signal.
How does the logic device determine ambient noise conditions in the active noise cancellation system?
The logic device determines ambient noise conditions by estimating the fullband power and low-frequency power of the reference signal, comparing these powers to thresholds, and setting ambient noise flags based on the comparison results.
Original Abstract Submitted
active noise cancellation systems and methods include a feedforward path configured to receive a reference signal comprising ambient noise and adaptively generate an anti-noise signal to cancel the ambient noise. the adaptive filter is tuned in accordance with at least one parameter, which is set by a logic device configured to determine an ambient noise condition based the reference signal by estimating a fullband power of the reference signal, estimating a low-frequency power of the reference signal, comparing the fullband power and low-frequency power to one or more thresholds, and/or setting one or more ambient noise flags. the ambient noise condition may include a quiet background, a wideband noise condition, and/or a low-frequency dominant noise condition.
