Multi-Speaker Casting With Microphone-Based Channel Allocation
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Solution Overview
Problem
Smartphones are limited to one or two wireless speaker connections, restricting surround sound and multi-room sound output capabilities.
Innovation Solution
A method and system for connecting to multiple wireless speakers, utilizing a casting device and remote control with a microphone to send test signals, analyze sound output characteristics, and select appropriate channels for each speaker based on frequency range and time delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a smartphone connects to multiple wireless speakers, then surround sound and multi-room sound output are improved, but device complexity and connection management become more difficult
Solution Approach 1:
The system automatically performs speaker discovery, connection establishment, and channel allocation without requiring manual user configuration. The casting device autonomously manages the complexity of connecting to multiple speakers and assigning audio channels, making the process self-service and eliminating manual intervention.
Solution Approach 2:
The system performs preliminary actions by automatically discovering available speakers, establishing connections, and allocating channels before the user initiates audio casting. This preliminary setup phase handles all complex connection management tasks in advance, so users only need to trigger the casting function without dealing with technical configuration.
2Measurement precision
If test signals are sent to each speaker and channel allocation is optimized based on frequency range and time delay, then audio quality is improved, but processing time and system complexity increase
Solution Approach 1:
The system performs speaker characterization by sending test signals and measuring frequency response and time delay characteristics during an initial setup phase. This preliminary measurement and storage of speaker parameters enables rapid, optimized channel allocation without requiring time-consuming measurements during each casting session.
Solution Approach 2:
The system uses feedback from test signal measurements to automatically determine optimal channel allocation. By measuring the actual acoustic characteristics of each speaker and using this feedback to assign channels, the system achieves precise audio optimization without manual configuration, balancing measurement precision with automated decision-making.
3Ease of operation
If the system automatically discovers and connects to multiple speakers, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The casting device autonomously performs speaker discovery, connection establishment, and configuration without requiring user intervention. The system self-manages the entire process of finding available speakers, connecting to them, and optimizing their configuration, thereby improving ease of operation while containing complexity within the automated system.
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 high-quality surround sound and multi-room audio distribution by optimizing channel allocation to each speaker, enhancing audio experience.
Implementation Method 1
receiving information from a microphone for each of the one or more test signals output from each of the plurality of speakers
Data Source
AI summary
A method for casting to multiple wireless speakers, the method including: receiving at a casting device a request from a user device to cast audio signals to multiple wireless speakers, wherein the audio signals include multiple channels; sending an inquiry request; receiving responses to the inquiry request from multiple wireless speakers; connecting to a plurality of speakers from the multiple wireless speakers; sending test signals to each of the plurality of speakers; receiving information from a microphone for each of the one or more test signals output from each of the plurality of speakers, wherein the microphone is a component of a remote control associated with the casting device; selecting one or more of the multiple channels to send to each of the plurality of speakers based on the received information; and sending the corresponding selected one or more of the multiple channels to each of the plurality of speakers.