Speakerphone having improved outbound audio quality
View Patent ↗A telephone ( 310 ) and a method for providing outbound audio when the telephone is operating in a speakerphone mode. A first data unit ( 350 ) including a first unit type identifier ( 360 ) can be received by the telephone. The first unit type identifier can be an indicator of a type of audio data contained in the first data unit. For instance, the first unit type identifier can indicate whether the audio data is music or non-music audio data. If the first unit type identifier has a first value, for example a value indicating that the audio data is music data, unmuted outbound audio reproduced from the first data unit can be provided and voice activity detection can be disabled. Additionally, inbound audio can be muted.
1. A method for providing outbound audio in a telephone operating in a speakerphone mode, comprising:
receiving a first data unit comprising a first unit type identifier; and
responsive to determining that the first unit type identifier has a first value, providing unmuted outbound audio reproduced from the first data unit, wherein providing unmuted outbound audio comprises disabling voice activity detection in the telephone;
receiving a second data unit comprising a second unit type identifier; and
responsive to determining that the second unit type identifier has a second value, enabling the voice activity detection in the telephone.
2. The method according to claim 1 , further comprising the step of selecting the first unit type identifier to be an indicator of a type of audio data contained in the first data unit.
3. The method according to claim 1 , further comprising muting inbound audio while the outbound audio is unmuted.
4. The method according to claim 1 , further comprising the step of selecting the second unit type identifier to be an indicator of a type of audio data contained in the second data unit.
5. The method according to claim 1 , wherein said enabling the voice activity detection step further comprises muting the outbound audio.
6. The method according to claim 5 , further comprising unmuting the inbound audio while the outbound audio is muted.
7. The method according to claim 1 , further comprising periodically reducing a sound pressure level (SPL) of the outbound audio from a first level to a second level.
8. The method according to claim 7 , further comprising unmuting the inbound audio when the sound pressure level of the outbound audio is at the second level.
9. The method according to claim 7 , wherein said reducing the sound pressure level step further comprises gradually reducing the sound pressure level of the outbound audio from the first level to the second level.
10. The method according to claim 9 , further comprising:
after said gradually reducing the sound pressure level step, increasing the sound pressure level.
11. The method according to claim 10 , wherein said increasing the sound pressure level step comprises gradually increasing the sound pressure level from the second level to the first level.
12. A telephone having a speakerphone operation mode, comprising:
a modem for receiving a first data unit comprising a first unit type identifier; and
a data unit controller for providing unmuted outbound audio reproduced from the first data unit responsive to determining that the first unit type identifier has a first value, and wherein the data unit controller disables voice activity detection in the telephone;
wherein the modem receives a second data unit comprising a second unit type identifier; and
wherein the data unit controller enables the voice activity detection responsive to determining that the second unit type identifier has a second value.
13. The telephone of claim 12 , wherein the first unit type identifier indicates a type of audio data contained in the first data unit.
14. The telephone of claim 12 , wherein the data unit controller further mutes inbound audio while the outbound audio is unmuted.
15. The telephone of claim 12 , wherein the second unit type identifier indicates a type of audio data contained in the second data unit.
16. The method according to claim 12 , wherein the data unit controller further mutes the outbound audio.
17. The telephone of claim 16 , wherein the data unit controller unmutes the inbound audio while the outbound audio is muted.
18. The telephone of claim 12 , further comprising an output transducer gain control that periodically reduces a sound pressure level (SPL) of the outbound audio from a first level to a second level.
19. The telephone of claim 18 , wherein the data unit controller unmutes inbound audio when the sound pressure level of the outbound audio is at the second level.
20. The telephone of claim 18 , wherein the output transducer gain control gradually reduces the sound pressure level of the outbound audio from the first level to the second level.
21. The telephone of claim 20 , wherein the output transducer gain control gradually increases the sound pressure level after the sound pressure level has been reduced.
22. The telephone of claim 21 , wherein the output transducer gain control gradually increases the sound pressure level from the second level to the first level.