Method for treating an electric sound signal

A method for processing an electric sound signal wherein a right sound signal and a left sound signal are diffused in a reflective environment by two speakers and are detected by an acoustic detector comprising a right microphone and a left microphone, the method comprising:

• computing a first temporal filter representing a first acoustic transformation applied to the right sound signal by the reflective environment between the right speaker and the right microphone;
• computing a second temporal filter representing a second acoustic transformation applied to the right sound signal by the reflective environment between the right speaker and the left microphone;
• computing a third temporal filter representing a third acoustic transformation applied to the left sound signal by the reflective environment between the left speaker and the left microphone;
• computing a fourth temporal filter representing a fourth acoustic transformation applied to the left sound signal by the reflective environment between the left speaker and the right microphone;
• modifying each of the temporal filters by an operation including at least one of:
• normalizing the temporal filters on a maximum of a direct field or on a quadratic average,
• temporal resetting of the temporal filters in relation to each other,
• providing a time lag of samples from a temporal filter,
• masking of at least some of the samples from the temporal filter, and
• altering an amplitude of at least some of the samples from a temporal filter;
• applying the modified temporal filters to a right original sound signal and a left original sound signal to obtain processed electric sound signals by:
• applying a first modified temporal filter to the right original electric sound signal to obtain a first processed electric sound signal,
• applying a second modified temporal filter to the right original electric sound signal to obtain a second processed electric sound signal,
• applying a third modified temporal filter to the left original sound signal to obtain a third processed electric sound signal, and
• applying a fourth modified temporal filter to the left original sound signal to obtain a fourth processed electric sound signal,
• adding the first and fourth processed electric sound signals and the right original sound signal to obtain a right processed electric sound signal;
• adding the second and third processed electric sound signals and the left original sound signal to obtain a left processed electric sound signal;
• and
• diffusing the right processed electric sound signal and the left processed sound signal.