Radio receiver that changes function according to the output of an internal voice-only detector

A radio receiver comprising:

• a tuner that provides an audio output for a selected radio station;
• an amplifier coupled to the audio output of the tuner that provides an amplified audio signal to at least one speaker,
• a voice-only detection mechanism that monitors the audio output of the tuner, and that provides a first output indication when the audio output of the tuner is mostly voice, and that provides a second output indication when the audio output of the tuner is mostly music;
• and
• a radio processor coupled to the voice-only detection mechanism, the radio processor muting the amplified audio signal when the first output indication is received, and unmuting the amplified audio signal when the second output indication is received.

A radio receiver comprising:

• a first tuner that provides an audio output for a selected radio station;
• a radio processor coupled to the first tuner, the radio processor allowing a user to select a preferred audio signature, the radio processor defining a threshold and a timer value, the radio processor tuning to a first radio station with the first tuner in response to input from the user and providing an audio output of the first tuner, the radio processor performing spectrum analysis on the audio output of the first tuner by comparing at least one frequency band of the output of the first tuner with the preferred audio signature, and if the at least one frequency band of the audio output of the first tuner is within the defined threshold, the audio output of the first tuner satisfies the preferred audio signature, and if the at least one frequency band of the audio output of the first tuner is not within the defined threshold, the audio output of the first tuner does not satisfy the preferred audio signature, the radio processor providing a first indication when the audio output of the first tuner satisfies the preferred audio signature and providing a second indication when the audio output of the first tuner does not satisfy the preferred audio signature, the radio processor scanning with a second tuner for a new radio station that satisfies the preferred audio signature by performing spectrum analysis on an audio output of the second tuner by comparing at least one frequency band of the audio output of the second tuner with the preferred audio signature, and if the at least one frequency band of the audio output of the second tuner is within the defined threshold, the audio output of the second tuner satisfies the preferred audio signature and if the at least one frequency band of the audio output of the second tuner is not within the defined threshold, the audio output of the second tuner does not satisfy the preferred audio signature, and if the output of the first tuner does not satisfy the preferred audio signature, the radio processor mutes the output of the first tuner and starts the timer, and if the output of the first tuner satisfies the preferred audio signature before the timer expires, the radio processor un-mutes the output of the first tuner, and if the output of the first tuner does not satisfy the preferred audio signature before the timer expires, the radio processor causes the first tuner to switch to the new radio station found by the second tuner that satisfies the preferred audio signature.