Apparatus with dynamic audio signal pre-conditioning and methods therefor

摘要

An apparatus includes an echo canceller having an audio signal input and an audio signal output and dynamic pre-conditioning logic. The dynamic pre-conditioning logic is operatively coupled to the echo canceller audio signal output as a feedback signal and has a dynamic pre-conditioning logic output operatively coupled to the echo canceller audio signal input. The dynamic pre-conditioning logic is also operative to receive an audio signal input from at least one microphone. The dynamic pre-conditioning logic is operative to analyze the feedback signal to obtain at least one characteristic, and pre-condition the audio signal input, based on the at least one characteristic of the feedback signal, and provide a pre-conditioned audio signal at the echo canceller audio signal input. The echo canceller audio signal output is then provided to a noise suppressor for the send path of a full duplex communication channel.

主权项

1. A computer-implemented method comprising:
receiving, by a dynamic pre-conditioning module that is communicatively coupled between a fixed pre-conditioning module and an echo cancelling module in a send path of a mobile communications device, an input audio signal from the fixed pre-conditioning module; preconditioning, by the dynamic pre-conditioning module, the initial input audio based on one or more initial pre-conditioning parameters; providing, by the dynamic pre-conditioning module, the preconditioned, initial input audio signal to the echo cancelling module; receiving, by the dynamic pre-conditioning module, a subsequent input audio signal from the fixed pre-conditioning module; receiving, by the dynamic pre-conditioning module, a feedback signal from the echo cancelling module to which the pre-conditioned, initial audio signal was provided; determining, by the dynamic pre-conditioning module, one or more characteristics of the feedback signal from the echo cancelling module to which the preconditioned, initial audio signal was provided; selecting, by the dynamic pre-conditioning module, one or more adjusted pre-conditioning parameters based on the one or more characteristics of the feedback signal; pre-conditioning, by the dynamic pre-conditioning module, the subsequent input audio signal based on the one or more adjusted preconditioning parameters; and providing, by the dynamic pre-conditioning module, the pre-conditioned, subsequent input audio signal to the echo cancelling module.