Transmitting and reproducing stereophonic audio signals
AssigneeZarlink Semiconductor Inc.
InventorsMarcus Richard Jones, Terence Christopher Aliwell
Life of this patent
Estimating the term…
Abstract
Apparatus and method for transmitting and reproducing stereophonic audio signals are disclosed. The method comprises splitting first and second channels into two frequency bands, combining the lower frequency band signals of the two channels, and transmitting the combined signals of the two channels or signals representative thereof. The apparatus comprises: a splitter for splitting each of the two channels into two frequency bands, a combiner, for combining the lower frequency band signals of the two channels, and a transmitter for transmitting the combined signals, or signals representative thereof, and the higher frequency band signals of the two channels, or signals representative thereof.
Claims20
A method of transmitting stereophonic audio signals, said method comprising the following steps:
- splitting the signals on each of two audio channels into respective higher and lower frequency bands;
- combining said lower frequency band signals of said two audio channels;
- and
- transmitting the combined lower frequency band signals or signals representative thereof and the respective higher frequency band signals of said two audio channels or signals representative thereof.
A method of transmitting stereophonic audio signals, said method comprising the following steps:
- splitting the signals on each of two audio channels into respective higher and lower frequency bands;
- combining said lower frequency band signals of said two channels;
- shifting downwards in frequency the respective higher frequency band signals of said two audio channels;
- and
- transmitting the combined lower frequency band signals, or signals representative thereof, and the respective frequency shifted signals, or signals represented thereof.
A device for transmitting stereophonic audio signals, comprising:
- a splitter for splitting each of two audio channels into respective first and second frequency bands;
- a combiner for combining the first frequency band signals of said two audio channels;
- and
- a transmitter for transmitting the combined first frequency band signals, or signals representative thereof, and the second frequency band signals of the two respective audio channels, or signals representative thereof.
An apparatus for transmitting stereophonic audio signals, comprising:
- a splitter for splitting each of two audio channels into respective first and second frequency bands;
- a combiner for combining the first frequency band signals of said two audio channels;
- a frequency shifter, for downwards shifting the frequency of the respective second frequency band signals of said two audio channels;
- and
- a transmitter for transmitting the combined first frequency band signals, or signals representative thereof, and the respective shifted second frequency band signals of said two audio channels, or signals representative thereof.
A device for reproducing stereophonic audio signals, comprising:
- a radio receiver for receiving signals transmitted over three audio channels;
- a first summer for combining signals received over a first one of said audio channels with signals received over a second one of said audio channels, to provide a first channel output;
- and
- a second summer for combining signals received over the first one of said audio channels with signals received over a third one of said audio channels, to provide a second channel output.
Dependencies are inferred from the claim text.