Measuring speech intelligibility of an audio environment
An example method of operation may include initiating an automated tuning procedure, detecting via one or more microphones a sound measurement associated with an output of one or more speakers at two or more locations, determining a number of speech transmission index (STI) values equal to a number of microphones, and averaging the speech transmission index values to identify a single speech transmission index value.
1. A method for tuning an audio system, the method comprising:
identifying, by a control device, a plurality of microphones, of the audio system, in a location having a plurality of speakers, of the audio system, arranged at different positions in the location;
identifying, by the control device, one microphone, of the plurality of microphones, that is closet to a speaker located at a middle position of the different positions;
receiving, by a control device, a plurality of measurements of a plurality of outputs of the plurality of speaker from the one microphone;
calculating, by the control device, speech transmission index (STI) value for each speaker of the plurality of speakers based on the plurality of measurements; and
calculating, by the control device, an average STI value based on the plurality of STI values.
2. The method of claim 1 , comprising
measuring the number of STI values while the plurality of speakers are concurrently providing output signals.
3. The method of claim 1 , further comprising:
generating, by the control device, a broad-band multitone ramp-up signal to a certain sound level at the plurality of microphones; and
measuring, by the control device, a gain and a sensitivity of each speaker, of the plurality of speakers, based on the broad-band multitone ramp-up signal.
4. An apparatus for tuning an audio system, comprising:
a processor configured to:
identify a plurality of microphones, of the audio system, in a location having a plurality of speakers, of the audio system, arranged at different positions in the location;
identify one microphone, of the plurality of microphones, that is closet to a speaker located at a middle position of the different positions;
receive a control device a plurality of measurements of a plurality of outputs of the plurality of speaker from the one microphone;
calculate a speech transmission index (STI) value for each speaker of the plurality of speakers based on the plurality of measurements; and
calculate an average STI value based on the plurality of STI values.
5. The apparatus of claim 4 , wherein the processor is further configured to:
measure the number of STI values while the plurality of speakers are concurrently providing output signals.
6. The apparatus of claim 4 , wherein the processor is further configured to:
generate a broad-band multitone ramp-up signal to a certain sound level at the plurality of microphones; and
measuring a gain and a sensitivity of each speaker, of the plurality of speakers, based on the broad-band multitone ramp-up signal.
7. A non-transitory computer readable storage medium configured to store one or more instructions that when executed by a processor for tuning an audio system cause the processor to perform:
identifying a plurality of microphones, of the audio system, in a location having a plurality of speakers, of the audio system, arranged at different positions in the location;
identifying one microphone, of the plurality of microphones, that is closet to a speaker located at a middle position of the different positions;
receiving a plurality of measurements of a plurality of outputs of the plurality of speaker from the one microphone;
calculating a speech transmission index (STI) value for each speaker of the plurality of speakers based on the plurality of measurements; and
calculating an average STI value based on the plurality of STI values.
8. The non-transitory computer readable storage medium of claim 7 , wherein the one or more instructions further cause the processor to perform:
measuring the number of STI values while the plurality of speakers are concurrently providing output signals.
9. The non-transitory computer readable storage medium of claim 8 , wherein the one or more instructions further cause the processor to perform:
generating a broad-band multitone ramp-up signal to a certain sound level at the plurality of microphones; and
measuring a gain and a sensitivity of each speaker, of the plurality of speakers, based on the broad-band multitone ramp-up signal.