Method for testing in-vehicle radio broadcast receiver device

A tester and recorder device comprising:

• a first input for receiving a demodulated audio signal from a radio broadcast receiver device in a vehicle and under test, the demodulated audio signal corresponding to a first radio signal stream split from a radio signal received from a radio broadcasting source by a receiver antenna in the vehicle;
• a second input for receiving a second radio signal stream split from the radio signal received by the receiver antenna in the vehicle;
• a temporary storage memory;
• a permanent storage memory;
• a control part connected to the first input and configured to:
• receive the demodulated audio signal via the first input;
• determine a spectrum of frequencies over time and the demodulated audio signal;
• and
• input the determined spectrum of frequencies into an artificial intelligence (AI) module of audio abnormality detection;
• and
• a radio receiver part connected to the second input and configured to:
• receive the second radio signal stream via the second input;
• convert the second radio signal stream into a data signal;
• record the data signal into the temporary storage memory;
• and
• responsive to a positive detection of audio abnormality that is output by the AI module, control a transfer of data from the temporary storage memory into the permanent storage memory, the transferred data corresponding to a time window including the detected audio abnormality.

A system comprising:

• a receiver antenna in a vehicle, the receive antenna configured to receive a radio signal carrying audio information from a radio broadcasting source;
• a splitter configured to split the radio signal received by the receiver antenna into a first radio signal stream and a second radio signal stream;
• a radio broadcast receiver device under test configured to convert the first radio signal stream into a demodulated audio signal;
• and
• a tester and recorder device configured to:
• receive the demodulated audio signal from the radio broadcast receiver device under test via a first input;
• determine a spectrum of frequencies over time of the demodulated audio signal;
• input the determined spectrum of frequencies into an artificial intelligence (AI) module of audio abnormality detection;
• receive the second radio signal stream from the splitter via a second input;
• convert the second radio signal stream into a data signal;
• record the data signal into a temporary storage memory;
• and
• responsive to an output of a positive detection of audio abnormality by the AI module, control a transfer of data from the temporary storage memory into a permanent storage memory, the transferred data corresponding to a time window including the detected audio abnormality.