Compander System
AssigneeSennheiser electronic GmbH & Co. KG
InventorsJuergen Peissig, Udo Zoelzer, Florian Keiler, Martin Holters
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Abstract
A compressor device for a compander system has a level detecting/control device and a pre-emphasis device for carrying out an adaptive pre-emphasis filtering. The invention is also directed to an expander device for a compander system with a level detecting/control device and a de-emphasis device for carrying out an adaptive de-emphasis filtering.
Claims12
1-14. (canceled)
A compressor device for a compander system having a level detecting/control device and a pre-emphasis device for carrying out an adaptive pre-emphasis filtering with a filter adaption unit which is designed to carry out an adaption of the pre-emphasis device based on a linear prediction.
An expander device for a compander system with a level detecting/control device and a de-emphasis device for carrying out an adaptive de-emphasis filtering with a filter adaption unit which is designed to carry out an adaption of the de-emphasis device based on a linear prediction.
A method for transmitting audio signals comprising the following steps:
- carrying out a pre-emphasis filtering of an input signal (x(n));
- adding the input signal (x(n)) and the result of the pre-emphasis filtering;
- multiplying the result of the addition by a signal (g(n)), wherein the signal (g(n)) represents a result of a level detection of the output signal (y(n)) of the multiplication;
- and
- wherein an adaption of the pre-emphasis filtering is carried out on the basis of a linear prediction.
Dependencies are inferred from the claim text.