Methods, circuits, systems and apparatus providing audio sensitivity enhancement in a wireless receiver, power management and other performances

A wireless receiver comprising:

• a down converter module operable to deliver a signal having a signal bandwidth that changes over time;
• a dynamically controllable filter module having a filter bandwidth and fed by said down converter module;
• and
• a measurement module operable to at least approximately measure the signal bandwidth, said dynamically controllable filter module responsive to said measurement module to dynamically adjust the filter bandwidth to more nearly match the signal bandwidth as it changes over time, whereby output from said filter module is noise-reduced, wherein said measurement module is operable to electronically estimate respective output levels from at least two of the channel select filters and a difference between them, and to trigger an adjustment from the lesser bandwidth to the greater bandwidth when the difference exceeds a predetermined level.

A wireless receiver comprising:

• a down converter module operable to deliver a signal having a signal bandwidth that changes over time;
• a dynamically controllable filter module having a filter bandwidth and fed by said down converter module;
• and
• a measurement module operable to at least approximately measure the signal bandwidth, said dynamically controllable filter module responsive to said measurement module to dynamically adjust the filter bandwidth to more nearly match the signal bandwidth as it changes over time, whereby output from said filter module is noise-reduced, further comprising a demodulator fed from said filter module and operable to supply a demodulated audio signal, and wherein the measurement module is also operable to electronically estimate an audio deviation based on the demodulated audio signal and to control the adjustment of the filter bandwidth at least in part based on the audio deviation.