System and method for dynamic modification of speech intelligibility scoring
First Claim
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1. A method comprising:
- determining if a selected test score should be established based on current remediation parameters applied to a plurality of voice output devices distributed throughout a region, and responsive thereto, establishing the test score;
responding to the test score, sensing the ambient sound in the region through a plurality of microphones distributed throughout the region for a predetermined time interval;
analyzing the sensed ambient sound;
overlaying the ambient sound in the region with a plurality of test audio signals injected into the region having predetermined characteristics;
sensing the overlaid ambient sound via the plurality of microphones;
determining if speech intelligibility in the region has been degraded beyond an acceptable standard;
upon detecting that the speech intelligibility has degraded beyond the acceptable standard based upon maximum attainable remediation values for at least one of frequency band energy and sound pressure level, automatically optimizing the current remediation parameters applied to a sound source operating within the region by adjusting at least some of pace, pitch, frequency spectra and sound pressure level of audio from at least some of the plurality of voice output devices.
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Abstract
A system and method to detect and measure remediated speech intelligibility by evaluating received test audio transmitted across and received in a space or region of interest. Remediation of the test audio may include altering the rate, pitch, amplitude and frequency bands energy during presentation of the speech signal.
16 Citations
25 Claims
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1. A method comprising:
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determining if a selected test score should be established based on current remediation parameters applied to a plurality of voice output devices distributed throughout a region, and responsive thereto, establishing the test score; responding to the test score, sensing the ambient sound in the region through a plurality of microphones distributed throughout the region for a predetermined time interval; analyzing the sensed ambient sound; overlaying the ambient sound in the region with a plurality of test audio signals injected into the region having predetermined characteristics; sensing the overlaid ambient sound via the plurality of microphones; determining if speech intelligibility in the region has been degraded beyond an acceptable standard; upon detecting that the speech intelligibility has degraded beyond the acceptable standard based upon maximum attainable remediation values for at least one of frequency band energy and sound pressure level, automatically optimizing the current remediation parameters applied to a sound source operating within the region by adjusting at least some of pace, pitch, frequency spectra and sound pressure level of audio from at least some of the plurality of voice output devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 24, 25)
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15. A method for remediation comprising:
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providing a plurality of voice output devices and a plurality of microphones in a region; determining if remediation is feasible within the region using a dynamically modifiable selected test score based upon a maximum attainable value of at least one of frequency spectra and sound pressure level measured within the region by the plurality of microphones in response to test signals injected into the region, and responsive thereto determining optimum remediation for each of the plurality of voice output devices distributed throughout and producing sound within the region; determining current remediation for each of the plurality of voice output devices; comparing current and optimum remediation for each of the plurality of voice output devices; determining if current and optimum remediation differ, and if so, automatically carrying out at least a determined optimum amplitude remediation in at least some of the plurality of voice output devices by adjusting at least some of pace, pitch, frequency spectra and sound pressure level from at least some of the plurality of voice output devices. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification