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Generating an audio signal with a configurable distance cue

An audio signal and signal technology, applied in the field of audio signal generation with configurable distance cues, which can solve problems such as being easily overlooked

Active Publication Date: 2016-07-13
HARMAN BECKER AUTOMOTIVE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Perceived distant sounds can be perfectly intelligible but can be easily ignored

Method used

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  • Generating an audio signal with a configurable distance cue
  • Generating an audio signal with a configurable distance cue
  • Generating an audio signal with a configurable distance cue

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Embodiment Construction

[0013] The human auditory system provides mechanisms for determining the distance of sound sources. At close range there are indications for distance determination, such as extreme grade differences (eg when whispering into one ear) or specific pinna resonances. The auditory system uses these cues to estimate the distance to the sound source:

[0014] (1) Direct reverberation ratio (DRR): In a closed room, two types of sound reach the listener: The direct sound reaches the listener's ear without being reflected from a reflective surface such as a wall. Reflected sound bounces off a reflective surface at least once before reaching the listener. The ratio between the direct sound and the reflected sound gives an indication of the distance from the sound source. The more reflective the sound, the further away the sound will appear.

[0015] (2) Loudness: A distant sound source has a lower loudness than a nearby sound source. This aspect can be assessed especially for well-kno...

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Abstract

Generating an audio signal with a configurable distance cue includes the following: receiving an input audio signal that has at least one signal characteristic that contributes to a listener's auditory distance perception; receiving a distance control signal; and changing at least one characteristic in accordance with a distance control signal that is representative of the perceived distance.

Description

technical field [0001] The present disclosure relates to systems and methods for generating audio signals with configurable distance cues. Background technique [0002] The perception of distance is distinguished from intelligibility. Sounds that are perceived as distant may be perfectly intelligible, but may be easily overlooked. This is especially true for various alarm tones and announcements that require full attention. This is especially true for broadcast signals like parking sensors and navigation signals in vehicles. A parking sensor is a proximity sensor for road vehicles designed to alert the driver to obstacles when parking. These systems using electromagnetic sensors or ultrasonic sensors are widely marketed by vehicle manufacturers under proprietary brand names such as Park Distance Control (PDC), ParkAssist or Parktronic. In some applications it is desirable to vary the perceived distance of the alarm signal. Contents of the invention [0003] A system f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D15/02B60Q9/00G08G1/16G10K15/12G10L19/008H04S5/00
CPCB60Q9/007B60Q9/008G08G1/0962G08G1/168G10K15/12H04S3/02H04S2400/11H04S2400/13H04S2420/07
Inventor M.克里斯托夫
Owner HARMAN BECKER AUTOMOTIVE SYST