Wireless microphone and/or in-ear monitoring system and method for controlling a wireless microphone and/or in-ear monitoring system
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United States of America
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Mar 31, 2020
Grant Date -
Oct 31, 2019
app pub date -
Jun 10, 2019
filing date -
Jun 10, 2019
priority date (Note) -
In Force
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Abstract
A wireless microphone and/or in-ear monitoring system having at least one first mobile device for wirelessly transmitting first audio signals. The system also has at least one base station for wirelessly receiving the first audio signals transmitted by the mobile device. The wireless transmission is based on an orthogonal frequency-division multiplexing transmission (OFDM) during a time-division multiple access (TDMA) time slot. Each wireless microphone occupies at least one slot within 2 ms. Each of the TDMA frames has a plurality of slots which respectively have precisely one OFDM symbol. Accordingly, precisely one OFDM symbol is transmitted in each TDMA slot. During a time slot made available in accordance with the TDMA, a transmission is effected on the basis of an OFDM method. The TDMA frame length is so short as a latency of <4 ms is required for professional audio transmission, for example in the case of wireless microphone systems.
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