Lighting device

1. A lighting device for determining and conveying an intelligibility of an audio signal, wherein the audio signal comprises a plurality of occurrences of a repeating audio feature, wherein each occurrence of the repeating audio feature comprises a respective value of an acoustic characteristic, wherein the lighting device comprises:

a light source;

a microphone for detecting the audio signal;

a processor configured to:

receive the audio signal from the microphone,

determine a baseline value based on said audio signal,

determine a positive intelligibility of the audio signal if the last occurrence of the repeating audio feature comprises a respective value of the acoustic characteristic being at least equal to the baseline value, or

determine a negative intelligibility of the audio signal if the last occurrence of the repeating audio feature comprises a respective value of the acoustic characteristic being less than the baseline value, and

control the light source to convey the determined positive and/or negative intelligibility of the audio signal via a lighting characteristic.

2. The lighting device according to claim 1 , wherein the processor is configured to determine a respective value of the acoustic characteristic of the first occurrence of the repeating audio feature as the baseline value.

3. The lighting device according to claim 1 , wherein the processor is configured to determine an average of a respective value of the acoustic characteristic of each occurrence of the repeating audio feature as the baseline value.

4. The lighting device according to claim 1 , wherein the audio signal further comprises a trigger feature initiating the audio signal, wherein the trigger feature comprises a value of the acoustic characteristic;

wherein the processor is configured to determine the value of the acoustic characteristic of said trigger feature as the baseline value.

5. The lighting device according to claim 1 , wherein the acoustic characteristic is one of: a Sound Pressure Level, a frequency, or a sound quality.

6. The lighting device according to claim 1 , wherein the lighting characteristic is a light modulation, a hue, a color temperature, a directionality, and/or a light intensity.

7. The lighting device according to claim 6 , wherein said light modulation comprises Li-Fi or Visible Light Communication.

8. The lighting device according to any one of the preceding claim 1 , wherein the light source is a directional light source.

9. The lighting device according to claim 8 , wherein the processor is configured to:

obtain a direction from which the audio signal is originating relative to the lighting device, and

control the directional light source to convey the determined positive and/or negative intelligibility of the audio signal via the lighting characteristic in said direction.

10. The lighting device according to claim 9 ,

wherein the processor is configured to obtain said direction from a lighting system comprising a microphone array, or

wherein the microphone is a directional microphone and the processor is configured to obtain said direction from the directional microphone.

11. The lighting device according to claim 1 , wherein the lighting device comprises a further light source, wherein the further light source is arranged to provide ambient lighting.

12. The lighting device according to claim 11 , wherein the processor is configured to control the further light source to transmit, if the processor determines a negative intelligibility of the audio signal, at least a part of said audio signal via a Li-Fi signal or a VLC signal.

13. The lighting device according to claim 1 , wherein the lighting device comprises a speaker, wherein the processor is configured to control the speaker to transmit, if the processor determines a negative intelligibility of the audio signal, at least a part of said audio signal.

14. A system for determining and conveying an intelligibility of an audio signal, wherein the system comprises at least two lighting devices according to claim 1 .

15. A method of determining and conveying an intelligibility of an audio signal, wherein the audio signal comprises a plurality of occurrences of a repeating audio feature, wherein each occurrence of the repeating audio feature comprises a respective value of an acoustic characteristic, wherein the method comprises:

detecting the audio signal;

determining a baseline value based on said audio signal;

determining a positive intelligibility of the audio signal if the last occurrence of the repeating audio feature comprises a respective value of the acoustic characteristic being at least equal to the baseline value, or

determining a negative intelligibility of the audio signal if the last occurrence of the repeating audio feature comprises a respective value of the acoustic characteristic being less than the baseline value, and

controlling a light source to convey the determined positive and/or negative intelligibility of the audio signal via a lighting characteristic.