Patent ID: 11943382
Assignee: MOTOROLA SOLUTIONS, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. An audio receiver for a converged portable radio, comprising:
a baseband processor (BP) processor for generating digital BP audio;
a BP codec coupled to the BP processor, the BP codec including a D/A for converting the digital BP audio to a BP analog audio output signal;
an AP processor for generating digital AP audio;
an AP codec coupled to the AP processor, the AP codec including a D/A for converting the digital AP audio to an AP analog audio output signal;
an audio switch system comprising:
a BP audio switch having a BP audio input and an enable/disable input and an applications processor (AP) audio switch having an AP audio input and an enable/disable input;
BP control logic for selectively enabling and disabling the BP audio switch in response to operational status of both the AP processor and the BP processor;
AP control logic for selectively enabling and disabling the AP audio switch in response to operational status of both the AP processor and the BP processor;

an audio power amplifier for receiving the audio output from one or more of the enabled BP audio switch and/or AP audio switch; and
a single speaker coupled to the output of the audio power amplifier; and
wherein processing and playing of received audio signal is based on a pre-selected user setting and the operational status of the AP and BP, and wherein:
mixed BP and AP analog audio plays out of the speaker when both the AP audio switch and BP audio switch are enabled; and
the mixed BP and AP analog plays out for a predetermined mixing time until switching to the pre-selected user setting is completed, wherein when the predetermined mixing time is based on audio latency and/or audio delay.