Digital wireless audio transmission system
First Claim
1. A digital wireless audio transmission system comprising:
- a wireless receiving unit for receiving wirelessly transmitted high frequency signals;
wherein the wireless receiving unit has;
a high frequency analysis unit configured to convert the high frequency signal into received data;
a decoder configured to decode the received data into digital audio data;
an audio processing unit configured to;
process the digital audio data;
output an audio output signal; and
activate or deactivate the audio output signal; and
an error detection unit configured to detect transmission errors and an error rate associated with the transmission errors;
wherein the decoder is adapted to, upon the occurrence of errors in the wireless transmission, produce digital audio data from error-affected received data by estimation;
wherein the error detection unit is adapted to;
compare the error rate to a first threshold value and a second threshold value,wherein the second threshold value is lower than the first threshold value;
wherein the audio processing unit is configured to account for audio artefacts and a hysteresis effect by;
deactivating the audio output when the error rate exceeds the first threshold value; and
re-activating the audio output only when the error rate falls below the second threshold value and when the error rate remains below the second threshold for a pre-determined period of time.
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Accused Products
Abstract
A digital wireless audio transmission system having a wireless receiving unit for wirelessly receiving a high-frequency signal. An HF analysis unit analyzes the received high-frequency data, detects errors in the transmission within a time window, and outputs the received data and first items of information in respect of the detected errors. A decoding unit converts/decodes the received high-frequency data into audio data. An error detection unit checks errors in the conversion of the decoding unit within a previously established time window and outputs second items of information in respect of errors during decoding of the received high-frequency data. An error rate is determined based on the first and second items of information. If the error rate exceeds a first threshold value then no audio signal is outputted. Only if the error rate falls below a second value, lower than the first value, is an audio output is then again effected.
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Citations
8 Claims
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1. A digital wireless audio transmission system comprising:
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a wireless receiving unit for receiving wirelessly transmitted high frequency signals; wherein the wireless receiving unit has; a high frequency analysis unit configured to convert the high frequency signal into received data; a decoder configured to decode the received data into digital audio data; an audio processing unit configured to; process the digital audio data; output an audio output signal; and activate or deactivate the audio output signal; and an error detection unit configured to detect transmission errors and an error rate associated with the transmission errors; wherein the decoder is adapted to, upon the occurrence of errors in the wireless transmission, produce digital audio data from error-affected received data by estimation; wherein the error detection unit is adapted to; compare the error rate to a first threshold value and a second threshold value, wherein the second threshold value is lower than the first threshold value; wherein the audio processing unit is configured to account for audio artefacts and a hysteresis effect by; deactivating the audio output when the error rate exceeds the first threshold value; and re-activating the audio output only when the error rate falls below the second threshold value and when the error rate remains below the second threshold for a pre-determined period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification