Techniques for improving telephone audio quality
First Claim
1. A level adjusting device for use with a near-end telephone, the near-end telephone being operable to generate an outgoing signal directed to a far-end telephone and to receive an incoming signal generated at least in part by the far-end telephone, the device comprising:
- a first signal processor operable to dynamically adjust a first signal level associated with the outgoing signal with reference to the first signal level; and
a second signal processor operable to dynamically adjust a second signal level associated with the incoming signal with reference to the second signal level;
wherein the first and second signal processors are further operable to control a loop gain to inhibit loop instability, and wherein the first and second signal processors are operable to dynamically adjust the first and second signal levels in a plurality of frequency bands and wherein the each of the first and second signal processors comprises a static gain control component and a dynamic gain control component.
4 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus are described for use with a near-end telephone. The near-end telephone is operable to generate an outgoing signal directed to a far-end telephone and to receive an incoming signal generated at least in part by the far-end telephone. A first signal processor is operable to dynamically adjust a first signal level associated with the outgoing signal with reference to the first signal level. A second signal processor is operable to dynamically adjust a second signal level associated with the incoming signal with reference to the second signal level. The first and second signal processors are further operable to control a loop gain to inhibit loop instability.
55 Citations
40 Claims
-
1. A level adjusting device for use with a near-end telephone, the near-end telephone being operable to generate an outgoing signal directed to a far-end telephone and to receive an incoming signal generated at least in part by the far-end telephone, the device comprising:
-
a first signal processor operable to dynamically adjust a first signal level associated with the outgoing signal with reference to the first signal level; and a second signal processor operable to dynamically adjust a second signal level associated with the incoming signal with reference to the second signal level; wherein the first and second signal processors are further operable to control a loop gain to inhibit loop instability, and wherein the first and second signal processors are operable to dynamically adjust the first and second signal levels in a plurality of frequency bands and wherein the each of the first and second signal processors comprises a static gain control component and a dynamic gain control component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. A level adjusting device for use with a near-end telephone, the near-end telephone being operable to generate an outgoing signal directed to a far-end telephone and to receive an incoming signal generated at least in part by the far-end telephone, the device comprising:
-
a first signal processor operable to dynamically adjust a first signal level associated with the outgoing signal with reference to the first signal level; and a second signal processor operable to dynamically adjust a second signal level associated with the incoming signal with reference to the second signal level; wherein the first and second signal processors are further operable to control a loop gain to inhibit loop instability and wherein the each of the signal processors comprises a static gain control component and a dynamic gain control component, the static gain control component being generally to statically adjust the corresponding signal level and is generally static at least for the duration of each telephone call and the dynamic gain control component being to dynamically adjust the corresponding signal level. - View Dependent Claims (40)
-
Specification