Skype Limited

Microsoft Technology Licensing, LLC

Stefan Strommer

Mihails Velenko

Devid Liik

Mart Oruaas

Mattias Nilsson

Koen Bernard Vos

Soren Vang Andersen

Karsten Vandborg Sorensen

Jon Bergenheim

Soren Skak Jensen

Method, device and computer program product for controlling data transmission over a network wherein a plurality of applications are capable of execution at a device of the network to thereby access the network, and wherein control means of the device are configured to set respective bandwidth limitations and to limit the bandwidth of the network access of the applications in accordance with their respective bandwidth limitations, the plurality of applications comprising at least one real-time application. The method comprises the control means determining a current transmission condition, the current transmission condition being one of a current network condition and a current bandwidth requirement of one of the at least one real-time application. The control means dynamically adapts the respective bandwidth limitations for the applications in dependence upon the determined current transmission condition. The control means controls network access of the applications to thereby limit the bandwidth of the network access of the applications in accordance with their respective adapted bandwidth limitations.

Controlling data transmission over a network

A method, terminal and program for processing a speech signal, in which the speech signal is received over a network from a transmitting device, wherein the frequency components in the received speech signal are limited to a predetermined frequency range and the received speech signal has been filtered using a transmitter frequency response over the predetermined frequency range. The received speech signal is decoded. The decoded speech signal is filtered using a receiver frequency response which is complementary to the transmitter frequency response over the predetermined frequency range to thereby reduce distortion in the speech signal introduced over the predetermined frequency range by using said transmitter frequency response.

Speech signal processing to improve naturalness

Method and user terminal for handling a call over a communications network between a first user terminal, usable by a first user, and at least one other user terminal, usable by a respective at least one other user, wherein a client is executed at the first user terminal for participation in the call. The client determines a condition of a respective at least one network connection used in the call between the first user terminal and the at least one other user terminal over the communications network. The client also determines that the call has been dropped, and responsive to the determination that the call has been dropped, the client automatically attempts to re-establish the call in dependence upon the determined condition of the at least one network connection.

Call re-establishment

A method and apparatus for transmitting an audio signal over a communication channel comprising encoding the audio signal with an encoderusing a first sampling rate, filtering the audio signal using a first cut off frequency, the first cut off frequency being chosen in dependence upon the first sampling rate, and transmitting the encoded and filtered audio signal over the communication channel. The presence of a condition in which the sampling rate of the encoderis to be switched to a second sampling rate at a switching time is determined and if the condition has been determined to be present, the cut off frequency used in the filtering step is gradually changed from the first cut off frequency to a second cut off frequency, the second cut off frequency being chosen in dependence upon the second sampling rate, such that the audio bandwidth of the transmitted signal changes gradually when the sampling rate is switched to the second sampling rate.

Encoding and decoding speech signals

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Stockholm, Sweden

Stefan Strommer