Gain control for an audio signal

摘要

A method and system for modifying an audio signal, the method comprising: receiving the audio signal at signal processing means; analysing the received audio signal to identify characteristic signal components in the audio signal; determining that another signal is input to the signal processing means, the input signal resulting from an activity which generates noise in the audio signal; and selectively applying an adjusted gain to the audio signal based on the determination that the input signal is input to the signal processing means, wherein the adjusted gain is generated in dependence upon the signal strength of the identified signal components.

主权项

1. A method comprising:
receiving an audio signal; analysing the received audio signal to identify characteristic signal components in the audio signal; generating an adjusted gain for the audio signal based on a signal strength of signal components identified in the audio signal; waiting for a specified period of time after generating the adjusted gain, independent of a signal strength of the audio signal, before applying the adjusted gain to the audio signal; in an event of receiving a notification from an operating system indicating that an input signal is detected prior to expiration of the specified period of time:
reducing an overall magnitude of the adjusted gain for the audio signal; andapplying the reduced overall magnitude of the adjusted gain to the audio signal dependent on the notification from the operating system; and in an event that an input signal is not detected prior to expiration of the specified period of time, applying the adjusted gain to the audio signal.