Playback Sound Profile Tuning Over LAN for Faster Speaker Voicing

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Solution Overview

Problem

The process of designing and fine-tuning loudspeakers is laborious, requiring repeated adjustments of electrical components and firmware upgrades, often taking days or weeks to achieve the desired sound, due to the need for acoustic measurements in an anechoic chamber followed by physical adjustments and re-measurements.

Innovation Solution

A method and system for adjusting loudspeakers via a network, allowing remote configuration and equalization through a graphical interface, enabling users to tune and share sound profiles across multiple speakers connected via Ethernet or wireless networks, facilitating real-time updates of settings such as tweeter, midrange, and woofer parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If acoustic measurements are taken in an anechoic chamber followed by physical adjustments and re-measurements, then manufacturing precision of sound quality is improved, but loss of time increases significantly

Engineering Contradiction:
Improvesound qualityVSAvoidtuning time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent replaces the mechanical process of physical component adjustment with automated electronic control. A processor automatically adjusts electrical components based on acoustic measurements, eliminating the manual iteration cycle of physical adjustment and re-measurement in the anechoic chamber.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs preliminary acoustic measurements and analysis before final adjustment. The processor pre-calculates the optimal component settings based on initial measurements, allowing the system to converge to the final sound quality faster by avoiding unnecessary iterative adjustments.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If electrical components are repeatedly changed to generate new equalization, then adaptability of sound profile is improved, but device complexity increases

Engineering Contradiction:
Improvesound profileVSAvoidcomponent adjustment
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent changes the control parameter from physical component values to electronic control signals. The processor adjusts electrical parameters (voltage, frequency, gain) to modify the sound profile, allowing rapid adaptation without physically changing components. This maintains adaptability while reducing the complexity of manual component management.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system creates and stores digital copies of sound profiles and measurement data. These profile copies can be recalled and applied to different playback devices, providing adaptability across multiple devices without requiring complex manual re-adjustment of each individual device's electrical components.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS11853184B2Adjusting a playback device
Publication Date: 2023.12.26 SONOS INC
  • US11853184B2 patent drawing
  • US11853184B2 patent drawing
  • US11853184B2 patent drawing

AI summary

Certain embodiments provide methods and systems for managing a sound profile. An example playback device includes a network interface and a non-transitory computer readable storage medium having stored therein instructions executable by the processor. When executed by the processor, the instructions are to configure the playback device to receive, via the network interface over a local area network (LAN) from a controller device, an instruction. The example playback device is to obtain, based on the instruction, via the network interface from a location outside of the LAN, data comprising a sound profile. The example playback device is to update one or more parameters at the playback device based on the sound profile. The example playback device is to play back an audio signal according to the sound profile.