Method for noise cancellation

摘要

A method for noise cancellation. The method includes providing a sound signal output device having a listening device output, a microphone input, and signal processing circuitry. The signal processing circuitry is adapted for causing the sound signal output device to perform in a noise-cancellation mode, including making available to the sound signal output device, at the microphone input, a noise-containing signal which is representative of ambient acoustical noise, deriving a noise-cancelling signal from the noise-containing signal, and making available to the personal listening device, at the listening device output, the noise-cancelling signal.

主权项

1. A method for providing noise cancellation in a personal listening device, comprising:
providing a sound signal output device having a listening device output, a microphone input, and signal processing circuitry adapted for causing the sound signal output device to perform in a noise-cancellation mode, including making available to the sound signal output device, at the microphone input, a noise-containing signal which is representative of ambient acoustical noise, and deriving a noise-cancelling signal from the noise-containing signal at least in part by inverting the noise-containing signal; compensating the noise-cancelling signal for the acoustical transfer function of the personal listening device by equalization; superimposing the equalized noise-cancelling signal and the noise-containing signal to produce a resulting signal; and providing the resulting signal to the personal listening device.