System and method for detecting and indicating that an audio system is ineffectively tuned

An audio system comprising:

• at least one microphone for capturing audio from an environment;
• at least one loudspeaker for presenting audio to the environment;
• and
• a processor operable to modify digital audio signals based on a plurality of tuning parameters to compensate for acoustic characteristics of the environment, the digital audio signals corresponding to at least one of audio captured from the environment and audio to be presented in the environment, wherein the processor is further operable to:
• detect, based on at least one of a particular digital audio signal corresponding to audio captured from the environment and values of the tuning parameters, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, wherein detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment includes:
• comparing values of ones of the tuning parameters to default values, and
• determining, based on the comparing, that at least a threshold number of the ones of the tuning parameters are set to default values;
• and
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, provide an indication that the audio system should be calibrated to adjust the tuning parameters to the environment.

An audio system comprising:

• at least one microphone for capturing audio from an environment;
• at least one loudspeaker for presenting audio to the environment;
• and
• a processor operable to modify digital audio signals based on a plurality of tuning parameters to compensate for acoustic characteristics of the environment, the digital audio signals corresponding to at least one of audio captured from the environment and audio to be presented in the environment, wherein the processor is further operable to:
• detect, based on at least one of a particular digital audio signal corresponding to audio captured from the environment and values of the tuning parameters, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, wherein detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment includes determining that values of a subset of the tuning parameters do not correspond to an expected statistical distribution;
• and
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, provide an indication that the audio system should be calibrated to adjust the tuning parameters to the environment.

An audio system comprising

• at least one microphone for capturing audio from an environment;
• at least one loudspeaker for presenting audio to the environment;
• and
• a processor operable to modify digital audio signals based on a plurality of tuning parameters to compensate for acoustic characteristics of the environment, the digital audio signals corresponding to at least one of audio captured from the environment and audio to be presented in the environment, wherein the processor is further operable to:
• detect, based on at least one of a particular digital audio signal corresponding to audio captured from the environment and values of the tuning parameters, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, wherein detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment includes determining that values of a subset of the tuning parameters correspond to an unexpected statistical distribution;
• and
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, provide an indication that the audio system should be calibrated to adjust the tuning parameters to the environment.

An audio system comprising:

• at least one microphone for capturing audio from an environment;
• at least one loudspeaker for presenting audio to the environment;
• and
• a processor operable to modify digital audio signals based on a plurality of tuning parameters to compensate for acoustic characteristics of the environment, the digital audio signals corresponding to at least one of audio captured from the environment and audio to be presented in the environment,
• wherein the audio system is adapted to perform echo cancellation on a particular digital audio signal corresponding to audio captured from the environment and wherein performing echo cancellation includes measuring a coherence between a far-side reference signal and the particular digital audio signal, and
• wherein the processor is further operable to:
• detect, based on at least one of the particular digital audio signal and values of the tuning parameters, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, wherein detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment includes determining that the coherence is less than a threshold;
• and
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, provide an indication that the audio system should be calibrated to adjust the tuning parameters to the environment.

An audio system comprising:

• at least one microphone for capturing audio from an environment;
• at least one loudspeaker for presenting audio to the environment;
• and
• a processor operable to modify digital audio signals based on a plurality of tuning parameters to compensate for acoustic characteristics of the environment, the digital audio signals corresponding to at least one of audio captured from the environment and audio to be presented in the environment, wherein the processor is further operable to:
• detect, based on at least one of a particular digital audio signal corresponding to audio captured from the environment and values of the tuning parameters, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment;
• and
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, provide an indication that the audio system should be calibrated to adjust the tuning parameters to the environment, wherein providing the indication that the audio system should be calibrated includes configuring the audio system to present audio at a reduced volume.

A computer-implemented method of comprising:

• detecting, based on at least one of a particular digital audio signal corresponding to audio captured from an environment by an audio system and values of tuning parameters for use in modifying digital audio signals to compensate for acoustic characteristics of the environment, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment;
• and
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, providing an indication that the audio system should be calibrated to adjust the tuning parameters to the environment, wherein detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment includes:
• comparing values of ones of the tuning parameters to default values;
• and
• determining, based on the comparing, that at least a threshold number of the ones of the tuning parameters are set to default values.

A computer-implemented method comprising:

• detecting, based on at least one of a particular digital audio signal corresponding to audio captured from an environment by an audio system and values of tuning parameters for use in modifying digital audio signals to compensate for acoustic characteristics of the environment, that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment;
• upon detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment, providing an indication that the audio system should be calibrated to adjust the tuning parameters to the environment;
• and
• performing echo cancellation on the particular digital audio signal, where performing echo cancellation includes measuring a coherence between a far-side reference signal and the particular digital audio signal,
• wherein detecting that modification of digital audio signals based on the tuning parameters cannot fully compensate for the acoustic characteristics of the environment includes determining that the coherence is less than a threshold.