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A volume-based personalized loudness compensation method and an earphone equalization system

A loudness compensation and volume technology, which is applied in earpiece/headphone accessories, transducer circuits, sensors, etc., can solve problems such as insufficient hearing sense and different shapes of equal loudness curves

Active Publication Date: 2018-12-18
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of insufficient hearing in insensitive frequency bands when playing back audio at different volumes due to the different shapes of equal loudness curves at different loudness levels. The present invention combines volume-based loudness compensation based on user feedback Headphone equalization technology, providing a volume-based personalized loudness compensation method, using this method to obtain the headphone loudness equalization curve at different volumes, the equalization curve is obtained by the user adjusting the loudness gain of the signal

Method used

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  • A volume-based personalized loudness compensation method and an earphone equalization system

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specific Embodiment approach

[0051] Such as image 3 Shown is a flow chart of a volume-based personalized loudness compensation method provided in an embodiment of the present invention, and the method is used to obtain an earphone equalization curve and implement loudness compensation. In this example, instead of obtaining the inherent sound pressure level of the signal, the headphone equalization curve at a specific volume is obtained based on the system volume value. In this embodiment, the specific implementation of the method in combination with the headphone equalization system includes:

[0052] Step 201) is to set the volume to be measured and the predetermined sound burst reference signal, the selected volume value of this example is 10, 20, 30, 40, 50, 60, 70, 80, 90 as the volume to be measured, or the selected volume value in the system. An array of stored volumes to be measured. Select 1000Hz as the predetermined sound burst reference signal, and store the equal loudness curve at each volum...

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Abstract

The invention provides a volume-based personalized loudness compensation method and an earphone equalization system. The invention provides a method including: by playing a burst sound reference signal and a burst sound test signal at each selected volume, adjusting the gain of each burst sound test signal to make its loudness equal to that of the burst sound reference signal, obtaining a loudnessgain curve at each volume, and correcting and interpolating the loudness gain curve by using a universal iso-loudness curve to form a gain continuous amplitude response curve; and generating the earphone equalization curve by amplitude response curve to compensate the loudness of the audio signal. By using the method and the earphone equalization system provided by the invention, the earphone loudness equalization curve under different volume can be obtained, and the equalization curve is obtained by adjusting the loudness gain of the signal by the user, so as to compensate for the problem ofinsensitive frequency band hearing feeling generated by playback audio under different sound pressure levels, and provide better earphone auditory experience for the user.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a volume-based personalized loudness compensation method and an earphone equalization system. Background technique [0002] Earphones are one of the most widely used audio devices in modern society. People use earphones to listen to audio played by mobile phones, computers and other devices. In order to obtain a better listening experience, the headphone equalization system came into being. Through the adjustment of the frequency response of the headphones by the equalizer, users can experience different artistic effects of the same audio. We know that the sensitivity of the human ear to different frequency perception is different. For different frequency signals with the same sound pressure level, the "volume" we feel varies from high to low, and the shape of the loudness curve is different under different loudness levels, and the higher the loudness level, etc. The flatter the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10H04R3/00
Inventor 姜自然桑晋秋
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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