Far Field Microphone Audio Performance Feedback System
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Solution Overview
Problem
Conventional speaker systems and audio devices limit immersive user experiences due to their smaller, portable nature, which restricts dynamic audio performance capabilities, especially in home environments.
Innovation Solution
A speaker system equipped with at least one far field microphone, a communications module, and a control system that initiates audio and video playback, receives user-generated acoustic signals, compares them to reference signals, and provides feedback, enabling karaoke-style performances and immersive experiences across geographically separated locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If smaller portable speaker systems are used, then portability and ease of placement are improved, but audio performance capabilities and immersive user experiences deteriorate
Solution Approach 1:
The patent combines multiple functions into a single speaker system: far field microphone array for remote voice capture, near field microphones for local audio, acoustic echo cancellation, and performance analysis capabilities. This integration allows the system to provide both portability and advanced audio performance capabilities that would otherwise require separate devices.
Solution Approach 2:
The speaker system is designed to perform multiple functions: it serves as an audio playback device, a karaoke performance system, a voice communication device, and a performance analysis tool. The far field microphones enable the system to function as both a speaker and a remote microphone, eliminating the need for separate equipment.
2Adaptability or versatility
If far field microphones are added to the speaker system, then audio performance capabilities and user engagement are improved, but device complexity increases
Solution Approach 1:
The system automatically performs acoustic echo cancellation by generating test signals through the acoustic transducer and using the far field microphones to capture the returned signals. The control system then automatically generates filter coefficients to cancel echo, eliminating the need for manual configuration or external processing equipment.
Solution Approach 2:
The system implements feedback mechanisms where the control system continuously monitors acoustic signals from far field microphones, compares them against reference signals, and dynamically adjusts filter coefficients to optimize echo cancellation. This closed-loop feedback approach simplifies the overall system by making it self-regulating.
3Productivity
If real-time audio feedback and performance analysis are implemented, then user engagement and interaction are improved, but processing requirements and system complexity increase
Solution Approach 1:
The system performs preliminary acoustic echo cancellation by generating test signals and capturing reference signals before actual audio performance. This pre-processing establishes baseline filter coefficients that simplify real-time processing during actual karaoke or performance modes, reducing the computational burden during user interaction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables dynamic and immersive audio performance experiences by allowing users to engage in karaoke-style singing and instrumental performances with real-time feedback, recording, and mixing capabilities, enhancing user engagement and interaction.
Implementation Method 1
an acoustic transducer
Implementation Method 2
at least one far field microphone
Data Source
AI summary
Various aspects include systems and approaches for providing audio performance capabilities with one or more far field microphones. One aspect includes a method of controlling a speaker system with at least one far field microphone that is coupled with a separate display device. The method can include: receiving a user command to initiate an audio performance mode; initiating audio playback of an audio performance file at a transducer at the speaker system; initiating video playback including musical performance guidance associated with the audio performance file at the display device; receiving a user generated acoustic signal at the at least one far field microphone after initiating the audio playback and the video playback; comparing the user generated acoustic signal with a reference acoustic signal; and providing feedback about the comparison to the user.