Sonos, Inc. (20240257821). SYSTEMS AND METHODS FOR ACOUSTIC ECHO CANCELLATION FOR AUDIO PLAYBACK DEVICES simplified abstract
Contents
SYSTEMS AND METHODS FOR ACOUSTIC ECHO CANCELLATION FOR AUDIO PLAYBACK DEVICES
Organization Name
Inventor(s)
Aaron Jones of Santa Barbara CA (US)
Saeed Bagheri Sereshki of Goleta CA (US)
SYSTEMS AND METHODS FOR ACOUSTIC ECHO CANCELLATION FOR AUDIO PLAYBACK DEVICES - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240257821 titled 'SYSTEMS AND METHODS FOR ACOUSTIC ECHO CANCELLATION FOR AUDIO PLAYBACK DEVICES
The patent application discusses systems and methods for enhanced acoustic echo cancellation and convergence state detection in a network microphone device (NMD).
- An adaptive filter in the NMD can generate a filter output to cancel out echoes in microphone input signals, using a reference signal from source audio content played through the device's transducers.
- The adaptive filter can be updated dynamically based on an adaptation parameter that controls the rate of adaptation.
- In case of a reset event or convergence error, the adaptation parameter can be reset to a default value for improved performance.
- Key Features and Innovation:**
- Utilization of an adaptive filter in a network microphone device for echo cancellation.
- Dynamic updating of the adaptive filter based on an adaptation parameter.
- Automatic reset of the adaptation parameter in response to reset events or convergence errors.
- Potential Applications:**
- Teleconferencing systems
- Voice recognition software
- Audio recording devices
- Problems Solved:**
- Elimination of echoes in microphone input signals
- Improved audio quality in communication devices
- Enhanced performance of echo cancellation algorithms
- Benefits:**
- Clearer audio transmission
- Reduced background noise
- Improved user experience in audio applications
- Commercial Applications:**
Potential commercial applications include telecommunication equipment, smart speakers, and audio conferencing systems. This technology can enhance the audio quality and user experience in various communication devices, leading to increased customer satisfaction and market competitiveness.
- Questions about Acoustic Echo Cancellation:**
1. How does the adaptive filter in the network microphone device improve echo cancellation? 2. What are the potential challenges in implementing this technology in different audio devices?
- Frequently Updated Research:**
Stay updated on advancements in adaptive filtering algorithms and echo cancellation techniques to enhance the performance of network microphone devices. Explore research on convergence state detection methods for real-time audio processing applications.
Original Abstract Submitted
systems and methods for improved acoustic echo cancellation and convergence state detection are disclosed. an adaptive filter of a network microphone device (nmd) can be used to generate a filter output to be applied to microphone input signals for echo cancellation. the filter output can be generated using a reference signal corresponding to source audio content played back via transducers of the nmd. the adaptive filter can be updated dynamically over time based at least in part on an adaptation parameter that determines the rate of adaptation. in response to determining that a reset event has occurred, the adaptation parameter can be reset to a default value. additionally or alternatively, in response to detecting a convergence error, the adaptation parameter can be reset to a default value.
