Method and Bluetooth device for calibrating multimedia devices

A non-transitory computer readable medium having stored thereon a computer program for execution by a computing device configured to perform a method for calibrating an audio system having a loudspeaker, the method comprising:

• transmitting a first probe signal for audio playback by a loudspeaker, the first probe signal comprising a first audio pattern;
• determining a signal quality by listening to an acoustic response of the loudspeaker to the first probe signal;
• determining a second audio pattern by modifying the first audio pattern based on the signal quality, the second audio pattern comprising a shorter period compared to the first audio pattern when the signal quality is above is predetermined threshold;
• transmitting a second probe signal for audio playback by the loudspeaker, the second probe signal comprising the second audio pattern;
• and
• determining an audio delay compensation for the loudspeaker based on a measure of an audio delay between the transmitted second probe signal and an acoustic response of the loudspeaker in response to the second probe signal.

A multimedia device for calibrating an audio system having a loudspeaker, the multimedia device comprising:

• a transmitter configured for transmitting a first probe signal for audio playback by the loudspeaker, the first probe signal comprising a first audio pattern;
• a sound sensor configured for listening to an acoustic response of the loudspeaker to the first probe signal;
• and
• a circuit configured for determining a signal quality by listening to an acoustic response of the loudspeaker to the first probe signal, and for determining a second audio pattern by modifying the first audio pattern based on the signal quality, the second audio pattern comprising a shorter period compared to the first audio pattern when the signal quality is above a predetermined threshold;
• the transmitter being further configured for transmitting a second probe signal for audio playback by the loudspeaker, the second probe signal comprising the second audio pattern;
• the circuit being further configured for obtaining an audio delay compensation for the loudspeaker based on a measure of an audio delay between the transmitted second probe signal and an acoustic response of the loudspeaker in response to the second probe signal.

A method for calibrating an audio system having a loudspeaker, the method comprising:

• transmitting a first probe signal for audio playback by the loudspeaker, the first probe signal comprising a first audio pattern;
• determining a signal quality by listening to a first acoustic response of the loudspeaker to the first probe signal;
• determining a second audio pattern by modifying the first audio pattern based on the signal quality;
• transmitting a second probe signal for audio playback by the loudspeaker, the second probe signal comprising the second audio pattern;
• and
• determining an audio delay compensation for the loudspeaker based on a measure of an audio delay between the transmitted second probe signal and a second acoustic response of the loudspeaker in response to the second probe signal and a determination of a non-overlapping time period between the first probe signal and the second probe signal.