20240021185. Gain Adjustment in ANR System with Multiple Feedforward Microphones simplified abstract (Bose Corporation)

Gain Adjustment in ANR System with Multiple Feedforward Microphones

Organization Name

Bose Corporation

Inventor(s)

Masanori Honda of Northborough MA (US)

Ricardo F. Carreras of Southborough MA (US)

Joseph H. Cattell of Somerville MA (US)

Gain Adjustment in ANR System with Multiple Feedforward Microphones - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240021185 titled 'Gain Adjustment in ANR System with Multiple Feedforward Microphones

Simplified Explanation

The abstract of this patent application describes a method for active noise reduction (ANR) technology. The method involves receiving audio signals captured by two different sensors in the signal path of the ANR device. These signals are then processed by a compensator to generate a drive signal for the device's acoustic transducer. The gain applied to the signal path is lower compared to a single-sensor ANR signal path.

• The patent/application is related to active noise reduction (ANR) technology.
• The method involves using two sensors to capture audio signals in the ANR device's signal path.
• The captured signals are processed by a compensator to generate a drive signal for the device's acoustic transducer.
• The gain applied to the signal path is at least 3 dB less compared to a single-sensor ANR signal path.

Potential applications of this technology:

• Noise cancellation in headphones and earphones: The technology can be used to improve the effectiveness of noise cancellation in personal audio devices, providing a better listening experience in noisy environments.
• Noise reduction in communication systems: The ANR technology can be implemented in communication devices such as headsets or microphones to reduce background noise during calls or recordings.
• Noise suppression in automotive systems: The method can be applied to ANR systems in vehicles to reduce road and engine noise, enhancing the overall comfort for passengers.

Problems solved by this technology:

• Improved noise reduction: By using two sensors and processing the captured signals, the technology can provide more accurate noise reduction compared to single-sensor ANR systems.
• Enhanced audio quality: The method helps to minimize unwanted noise, allowing for clearer audio playback or communication in noisy environments.
• Increased user comfort: By reducing background noise, the technology improves the overall listening experience and reduces fatigue caused by prolonged exposure to noise.

Benefits of this technology:

• Better noise cancellation: The use of two sensors and compensator processing improves the effectiveness of noise reduction, providing a more immersive and enjoyable audio experience.
• Versatile application: The technology can be implemented in various devices and systems, including headphones, communication devices, and automotive ANR systems.
• Improved user experience: By reducing unwanted noise, the technology enhances the clarity and intelligibility of audio, leading to better communication and increased user satisfaction.

Original Abstract Submitted

technology described in this document can be embodied in a method that includes receiving a first input signal representing audio captured by a first sensor disposed in a signal path of an active noise reduction (anr) device, and receiving a second input signal representing audio captured by a second sensor disposed in the signal path of the anr device. the method also includes processing, by at least one compensator, the first input signal and the second input signal to generate a drive signal for an acoustic transducer of the anr device. a gain applied to the signal path is at least 3 db less relative to an anr signal path having a single sensor.