Automatic tuning system

摘要

A system and method, automatically adaptable for use on multiple platforms, configured to reduce echoes heard by an end user of a remote communication device is provided. The system is configured to transmit communication from the remote communication device to a speaker, and to pick up communication from the microphone to the remote communication device. The system and method is directed towards emitting a test signal and processing the signal so as to calculate a phase shift to be applied to an outgoing auditory signal. The calculated phase shift is configured to cancel the test signal.

主权项

1. A system for use in an automotive vehicle having a cabin space, the automotive vehicle having a speaker and a microphone disposed within the cabin space, the system electrically coupled to the speaker and microphone and in wireless communication with a communication device disposed external to the cabin space, the system configured to reduce or cancel echoes transmitted to the remote communication device, the system comprising:
a transceiver having an integrated test signal generator, the transceiver configured to receive and transmit an auditory signal from and to the remote communication device, the test signal generator configured to transmit a test signal in the form of a sound through the speaker, the test signal having a known amplitude and frequency, wherein the test is different than the auditory signal, wherein the test signal is received by the microphone; a tuner disposed within the cabin space; and a processor unit configured to detect the period of time from when the test signal was transmitted and when the test signal was received by the microphone, the processor unit having a phase shifter in electrical communication with the processor unit, the processor unit further configured to calculate a phase shift configured to cancel the test signal, the phase shifter receiving the calculated phase shift and applying the calculated phase shift to an outgoing auditory signal transmitted by the transceiver so as to cancel an echo transmitted to the remote communication device; the tuner configured to manually adjust the calculated phase shift so as to adjust the outgoing auditory signal received by the remote communication device.