Method for optimizing speech pickup in a speakerphone system
AssigneeEPOS Group A/S
InventorsAnders Røser Hansen, Poul Peder Hestbek, Casper Fynsk
Life of this patent
Estimating the term…
Abstract
A method (S100) for optimizing speech pickup in a speakerphone system, wherein the speakerphone system comprises a microphone system placed in a specific configuration, wherein the method comprising receiving (S10) acoustic input signals (12) by the microphone system, processing (S20) said acoustic input signals (12) by using an algorithm (100) for focusing and steering a selected target sound signal towards a desired direction, and transmitting (S30) an output signal (13) based on said processing.
Claims23
A method for optimizing speech pickup in a speakerphone system, wherein the speakerphone system comprises a microphone system placed in a specific configuration, wherein the method comprising:
- receiving acoustic input signals by the microphone system,
- providing a directional output signal based on signals from said microphone system,
- providing an omnidirectional output signal based on signals from said microphone system,
- processing said acoustic input signals by determining a mixing ratio based on a room characteristic, and mixing said directional output sound signal with said omnidirectional output signal based on the determined mixing ratio, the mixing ratio defining a ratio of omnidirectional output signal to the directional output signal, the room characteristic being a reverberation level in the room in which a speakerphone is placed, the mixing ratio being selected from among at least two ratios based on the reverberation level in the room, each of the at least two ratios including a non-zero quantity of the directional output signal, and
- transmitting an output signal based on said processing.
A system for optimizing speech pickup in a speakerphone of the system, comprising:
- an input unit comprising a microphone system placed in a specific configuration and adapted for receiving an audio input signal and providing an electric audio input signal;
- a mixing unit for determining a mixing ratio based on a room characteristic, and mixing a directional signal based on said input unit with an omnidirectional signal based on said input unit, wherein the mixing ratio is based on the determined mixing ratio, the mixing ratio defining a ratio of omnidirectional output signal to the directional output signal, the room characteristic being a reverberation level in the room in which a speakerphone is placed, the mixing ratio being selected from among at least two ratios based on the reverberation level in the room, each of the at least two ratios including a non-zero quantity of the directional output signal, and
- an output unit for providing an output signal perceivable by a user as sound representative of said electric audio input signal or a processed version thereof.
A speakerphone for optimizing speech pickup in said speakerphone, wherein the speakerphone comprises comprising:
- an input unit comprising a microphone system placed in a specific configuration and adapted for receiving an audio input signal and providing electric audio input signals;
- a mixing unit for determining a mixing ratio based on a room characteristic, and mixing a directional sound signal obtained from said electric audio input signals with an omnidirectional signal obtained from electric audio input signals, wherein the ratio of the signals are based on the determined mixing ratio, the mixing ratio defining a ratio of omnidirectional output signal to the directional output signal, the room characteristic being a reverberation level in the room in which a speakerphone is placed, the mixing ratio being selected from among at least two ratios based on the reverberation level in the room, each of the at least two ratios including a non-zero quantity of the directional output signal, and
- an output unit for providing an output signal perceivable by a user as sound representative of said electric audio input signal or a processed version thereof.
Dependencies are inferred from the claim text.