Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19722218154external-prioritypatent/DE2218154A1/en
Priority claimed from DE19722250094external-prioritypatent/DE2250094A1/en
Application filed by Alcatel Espana SAfiledCriticalAlcatel Espana SA
Publication of ES411898A1publicationCriticalpatent/ES411898A1/en
A broadband sound signal transfer system, characterized in that: at the system input, the sound signal is divided into a lower and upper frequency range, the partial signal of the lower frequency range being directly transferred; instead of the partial signal of the upper frequency range, the amplitude information of the partial frequency margins obtained by the division of this frequency range is transferred by means of bandpass filters; for the reproduction of the total signal the amplitude information of the partial frequency margins is used as a modulating signal for equivalent signals that are towards the center of the individual partial frequency ranges; and these synthetic sound signals of the partial frequency margins of the upper frequency range are added to the partial signal transmitted directly from the lower frequency range. (Machine-translation by Google Translate, not legally binding)
ES411898A1972-04-141973-02-22System of transfer of broadband sound signals. (Machine-translation by Google Translate, not legally binding)
ExpiredES411898A1
(en)
An apparatus for previously defining a signal of a mixed frequency content in a data transmission system. (Machine-translation by Google Translate, not legally binding)
A reproduction apparatus for use in a transmission system to transmit an information signal through a register carrier (Machine-translation by Google Translate, not legally binding)