Loudspeaker Signals Distribution TRIZ Cases

Separating microphone array elements across small substrates and bus-linked cables cuts size, improves placement freedom, and reduces EMI.

All-pass filtering on the low-frequency path and pure delay on the high-frequency path align crossover timing with low real-time latency.

A high-Q filter lets an identical woofer cover 200-2000 Hz, removing the dedicated mid-range driver and simplifying crossover design.

FIR allpass weighting helps transducer arrays keep off-axis frequency response more uniform without sacrificing acoustic gain.

A switchable low-pass and amplifier path lets one speaker work in full-range or subwoofer mode, cutting extra hardware and power use.

A shunting network gradually mutes one in-plane driver and boosts the other to prevent acoustic interference across the speaker's range.

By tuning crossover frequencies and filter responses to driver spacing, this case smooths off-axis loudspeaker output and reduces interference.

A DSP and microphone measure room modes and adjust EQ, delay, and phase to flatten subwoofer bass response in home rooms.

Partial downmixing and playback tuning let multichannel satellite speakers preserve immersive home theatre audio on limited wireless bandwidth.

Psychoacoustic directional bands improve 3D sound localization while reducing loudspeaker complexity and DSP load.

In-phase and out-of-phase dual speakers shape interference patterns to limit sound leakage while preserving clear listening and ambient awareness.

Image-based listener detection lets audio mixing follow user positions and bearing angle changes for more accurate spatial sound.

Separating master and zone-specific audio signals enables aligned multi-zone playback with lower crosstalk, better sound consistency, and less processing cost.

Dual speakers and tuned front and rear chambers cut 3-6 kHz sound leakage while keeping an open-ear fit and clear audio.

Transforms left and right channels into sum-difference signals so multi-speaker playback reduces interference artifacts and improves psychoacoustics.

Ultrasound timing feedback lets a master device measure slave playback delay and align conference audio across multiple devices.

Opposite-phase speaker and receiver output cancels housing vibration and cavity noise without extra components, lowering cost and stack complexity.

Phase-opposed speaker radiation confines audio to the seated user while canceling sound farther away, avoiding headphones and limiting disturbance.

Converting left and right channels into sum and difference signals cuts correlation, reducing playback interference and improving psychoacoustics.

Acoustic response detection identifies each loudspeaker’s frequency range and location, enabling automated grouping and safer in-situ sound tuning.

Near-field speakers, position sensors, and a controller preserve spatialization as users move while limiting audio leakage to adjacent listeners.

A center driver and ring radiator use synchronized diaphragms and multiple voice coils to expand radiating area while reducing distortion.

Digital filters calculate seat-specific acoustic responses and reconstruct the cabin sound field to balance energy between passenger ears.

The approach replaces a fixed listening position with dynamic audio distribution for multiple users, without manual calibration.