Device and method for dynamic range compression of sound

A dynamic range and audio signal technology, applied in the compression/expansion of digital/encoded signal volume, in the compression/expansion of non-tuned/low-frequency amplifier volume, speech analysis, etc., which can solve the problems of loss of content perception, dangerous high-energy tones, etc.

Inactive Publication Date: 2018-02-23
阿哈隆丹尼尔谢费尔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To obtain satisfactory hearing over normal background noise loudness, the user has to increase the gain of the HA to a level where positive feedback from the speaker to the microphone tends to develop, resulting in dangerously high-energy tones
On the other hand, with existing acoustic DRC methods, the hard of hearing will lose even more content perception on loud sounds due to the washout effect

Method used

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  • Device and method for dynamic range compression of sound
  • Device and method for dynamic range compression of sound
  • Device and method for dynamic range compression of sound

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Embodiment Construction

[0037] The present invention is a method and apparatus for compressing the dynamic range of sound.

[0038]The operation and rules of the method and apparatus according to the present invention can be better understood with reference to the accompanying drawings and the following description.

[0039] Before explaining at least one specific embodiment of the invention in detail, it is to be understood that the invention is not necessarily limited to the details of construction and the arrangement of parts to which it applies and / or the methods and / or methods set forth in the following description and / or Methods and / or embodiments shown in the figures. The invention is capable of being practiced or carried out or operated in other embodiments and in various ways.

[0040] Now see attached picture, figure 1 is a specific embodiment of the DRC device and method according to the neuromorphic fb-AGC model 100 . In the neuromorphic fb-AGC model, each sample of the acquired sound...

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Abstract

A method compresses the dynamic range of an audio signal. The audio signal is multiplied by a scalar to produce a scalar multiplied version of the audio signal. The audio signal is rectified to produce a rectified version of the audio signal. The rectified version of the audio signal is modified according to a well-defined function to produce a modified rectified version of the audio signal. An output signal is produced based on a ratio between the scalar multiplied version of the audio signal and the modified rectified version of the audio signal. The output signal has a dynamic range less than the dynamic range of the audio signal.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of International Application PCT / IL2015 / 051019, filed October 13, 2015, which claims priority to U.S. Provisional Patent Application 62 / 075,913, filed November 6, 2014, which The specifications of both are incorporated herein in their entirety. technical field [0003] The present invention relates to the processing of sound, and more particularly to dynamic range compression of sound. Background technique [0004] The maximum allowable sound level of the human ear can accommodate 90db without damage. The loudness of ordinary daily background noise can easily reach 70db. This means: if we want to ensure that some listening content is heard for a person, we must understand that: the content must be delivered at a loudness level of 70dB to 90dB, which is 20dB or factor 120 or dynamic range (DR) in About 7 bits in the digital item. However, it turns out that the loudness lev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/005G10L19/012G10L21/003G10L21/04H04R25/00
CPCG10L19/005G10L19/012G10L21/003G10L21/04H04R25/35H03G7/007H03G7/004H03G9/18H04R3/04H04R25/356
Inventor 莫迪凯·谢费尔
Owner 阿哈隆丹尼尔谢费尔
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