Method and system for voice chat in virtual environment

1. A method for voice chat in a virtual environment, the method comprising:

receiving a plurality of audio streams corresponding to a plurality of avatars in the virtual environment, wherein the virtual environment comprises a first location and a second location spaced apart from the first location by a predetermined distance, and each of the first and second locations includes at least one avatar;

calculating change in volumes of the audio streams, depending on the predetermined distance between the first and second locations;

mixing audio streams of the at least one avatar present in the first location to create a first audio stream;

mixing audio streams of the at least one avatar present in the second location to create a second audio stream;

normalising volumes of the first and second audio streams depending on the predetermined distance between the first and second locations;

mixing the normalised audio streams to create a first and a second mixed audio streams; and

relaying the first and second mixed audio streams to the at least one avatar at corresponding locations.

2. A method according to claim 1 , wherein the predetermined distance between the first and second location is a length of a shortest route between the first and second location in the virtual environment.

3. A method according to claim 1 , wherein calculating change in volumes of the audio streams comprises use of a mathematical function.

4. A method according to claim 3 , wherein the mathematical function is at least one of a linear function, an exponential function and a logarithmic function.

5. A method according to claim 1 , wherein change in volumes of the audio streams comprises reduction in volume and increase in volume.

6. A method according to claim 1 , wherein the method further comprises adding environmental cues to the mixed audio streams.

7. A method according to claim 6 , wherein the environmental cues comprises auditory cues.

8. The method of claim 1 further comprising:

receiving an audio stream corresponding to each of the avatars in the virtual environment; and

relaying an audio stream to a user device, the audio stream comprising audio streams of avatars other than an avatar associated with the user device.

9. A method for voice chat in a virtual environment, the method comprising:

receiving a plurality of audio streams corresponding to a plurality of avatars in the virtual environment;

determining relative distances between the avatars in the virtual environment;

calculating change in volumes of the audio streams, depending on the determined relative distances between the avatars;

normalising volumes of the audio streams depending on the calculated change in volumes;

mixing the normalised audio streams to create a plurality of mixed audio streams, wherein one mixed audio stream corresponds to one avatar; and

relaying the mixed audio streams to the corresponding avatars;

the method further comprising:

analysing the received plurality of audio streams to derive lip-sync information corresponding to the plurality of avatars;

adding the derived lip-sync information to the mixed audio streams; and

changing lip movements of the plurality of avatars depending on the added lip-sync information.

10. A method according to claim 9 , wherein the lip-sync information comprises phonemes.

11. A method according to claim 9 , wherein analysing the received audio streams to derive lip-sync information comprises implementing Fourier analysis algorithms to determine phonemes corresponding to the received audio streams.

12. A method according to claim 11 , wherein the Fourier analysis algorithms are Fast Fourier analysis algorithms.

13. The method of claim 9 , further comprising:

receiving an audio stream corresponding to each of the avatars in the virtual environment; and

relaying an audio stream to a user device, the audio stream comprising audio streams of avatars other than an avatar associated with the user device.

14. A system for voice chat in a virtual environment, the system comprising:

a plurality of user devices associated with a plurality of users, wherein one user device is associated with one user being represented by an avatar in a first location in the virtual environment, and another user being represented by an avatar in a second location in the virtual environment;

a server communicably coupled to the plurality of user devices, wherein the server comprises a voice chat engine operable to:

receive a plurality of audio streams corresponding to the avatars in the virtual environment;

determine relative distances between the first and second locations in the virtual environment;

calculate change in volumes of the audio streams, depending on the determined relative distances between the first and second locations;

mix audio streams of the at least one avatar present in the first location to create a first audio stream;

mix audio streams of the at least one avatar present in the second location to create a second audio stream;

normalise volumes of the first and second audio streams depending on the predetermined distance between the first and second locations;

mix the normalised audio streams to create a first and a second mixed audio streams; and

relay the first and second mixed audio streams to the avatar at each corresponding location.

15. A system according to claim 14 , wherein the server further comprises a database configured to store physical and spatial information of the avatars.

16. A system according to claim 15 , wherein the physical information of the avatars comprises physical attributes of the avatars.

17. A system according to claim 15 , wherein the spatial information of the avatars comprises position coordinates of the avatars in the virtual environment.

18. The system according to claim 14 , wherein the voice chat engine of the server is operable to:

receive an audio stream corresponding to each of the avatars in the virtual environment;

relaying an audio stream to a user device, the audio stream comprising audio streams of avatars other than an avatar associated with the user device.