Audio signal mixing

摘要

A system and a method for mixing at least two audio signals are provided that comprise transferring the audio signals with respective transfer functions, the audio signals each having an amplitude and a phase; adding the audio signals to provide an output signal representative of the mixed audio signals, the output signal having an amplitude and a phase; controlling at least one of the transfer functions of the signal lines so that the phase of the output signal is adapted to the phase of the audio signal with a higher signal strength than the other audio signal(s), the signal strengths corresponding to the amplitudes of the audio signals.

主权项

1. A system for mixing audio signals comprising: signal lines configured to transfer the audio signals with respective transfer functions, the audio signals each having an amplitude and a phase; an adder coupled to the signal lines and configured to add the audio signals to provide an output signal representative of the mixed audio signals, the output signal having an amplitude and a phase; and a line controller configured to control at least one of the respective transfer functions of the signal lines so that the phase of the output signal is adapted to the phase of the audio signal with a higher signal strength than at least one of other audio signals, the signal strengths corresponding to the amplitudes of the audio signals, where the line controller is configured to control at least one of the transfer functions of the signal lines so that a signal power of the output signal is equal to a sum of the powers of the audio signals, and where the line controller comprises a compensation filter arranged in one of the signal lines and a compensation filter controller coupled to the compensation filter and to at least one of other signal line, the compensation filter being configured to provide a compensation transfer function for the one signal line that is controllable by the compensation filter controller, and the compensation filter controller being configured to control the compensation filter based on the at least one of other audio signals so that the signal power of the output signal is equal to the sum of the powers of the audio signals.