Estimating delays

An apparatus, comprising:

• at least one processor;
• and
• at least one memory including computer program code;
• wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform:
• providing a model for a system for mitigating unwanted effects in a received signal;
• determining a first curve by performing autocorrelation of the model;
• determining a second curve by performing cross-correlation of the model and a received signal comprising unwanted components due to first and second sources;
• and
• estimating first and second delays associated with the respective first and second sources based on the first and second curves.

A non-transitory computer-readable storage medium storing computer program code configured to cause an apparatus at least to perform:

• providing a model for a system for mitigating unwanted effects in a received signal;
• determining a first curve by performing autocorrelation of the model;
• determining a second curve by performing cross-correlation of the model and a received signal comprising unwanted components due to first and second sources;
• and
• estimating first and second delays associated with the respective first and second sources based on the first and second curves.

A method, comprising:

• providing a model for a system for mitigating unwanted effects in a received signal;
• determining a first curve by performing autocorrelation of the model;
• determining a second curve by performing cross-correlation of the model and a received signal comprising unwanted components due to first and second sources;
• and
• estimating first and second delays associated with the respective first and second sources based on the first and second curves.