Multi-Modal Audio Amplifier for Flexible Speaker Expansion

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Solution Overview

Problem

Conventional audio amplifiers are limited in the number of loudspeakers they can connect and require re-establishment of multi-device connections, restricting flexibility and configuration options.

Innovation Solution

The audio amplifiers are designed to operate in multiple modes, allowing a dedicated connection to one or more speakers and a direct physical connection with additional amplifiers, enabling them to provide amplified audio output and control audio output across multiple speakers, with adjustable equalization settings and delay compensation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional audio amplifiers are designed with a fixed number of speaker connections, then the device complexity is reduced, but the adaptability to different system configurations is limited

Engineering Contradiction:
Improveadaptability to different system configurationsVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The amplifier is designed to perform multiple functions by operating in different modes: it can function as a standalone amplifier driving speakers directly, or as a signal distributor forwarding audio signals to additional amplifiers. This multi-functionality allows a single device to adapt to various system configurations without requiring multiple specialized devices, thereby improving adaptability while managing device complexity through unified hardware design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The amplifier incorporates dynamic mode switching capability that allows it to change its operational characteristics based on system needs. The controller can dynamically adjust between amplification mode and signal forwarding mode, enabling the device to adapt its behavior to different configuration scenarios. This dynamic operation resolves the contradiction by allowing the amplifier to optimize its function for each specific use case rather than being fixed in a single configuration.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If multi-device connections require re-establishment during different uses, then the ease of operation is reduced, but the reliability of connections is improved

Engineering Contradiction:
Improveease of operationVSAvoidconnection stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The amplifier establishes signal pathways in advance through its design architecture, preparing both amplification and forwarding capabilities before operation begins. The controller is pre-configured to recognize different operational modes and automatically establish appropriate signal routes when devices are connected. This preliminary preparation eliminates the need for re-establishing connections during different uses, as the system is already prepared to handle various configurations from the outset.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The amplifier performs automatic mode detection and configuration without requiring manual re-establishment of connections. When additional amplifiers are connected, the system automatically detects the new configuration and adjusts its operation accordingly, switching between modes as needed. This self-service capability maintains reliable connections while improving ease of operation, as the system adapts autonomously rather than requiring user intervention to re-establish connections.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12034414B2Multi-modal audio amplifier and related system
Publication Date: 2024.07.09 BOSE CORP
  • US12034414B2 patent drawing
  • US12034414B2 patent drawing
  • US12034414B2 patent drawing

AI summary

Various aspects include audio amplifiers for driving at least one speaker. In some cases, the amplifier includes: a controller for amplifying at least one input signal to provide an amplified audio output signal, the controller configured to operate the amplifier in at least two modes, including: a first mode including a dedicated connection to the at least one speaker; and a second mode including a direct physical connection with an additional audio amplifier and the dedicated connection to the at least one speaker, where in the first mode and the second mode the amplifier is configured to provide the amplified audio output signal to drive the at least one speaker, and in the second mode the amplifier is configured to forward the at least one input signal to enable the additional audio amplifier to control audio output at an additional speaker.