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Audio signal processing method, device and integrated circuit

An audio signal processing and audio signal technology, applied in the field of signal processing, can solve problems such as distortion, achieve the effects of less steps, avoid peak clipping distortion, and simple data processing

Active Publication Date: 2020-11-27
NANJING SILERGY SEMICON TECH CO LTD
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Problems solved by technology

When the amplitude of the input audio signal is large, the amplitude of the output audio signal that should be theoretically obtained according to the user's settings will exceed the physical upper limit that the parametric equalizer can output or that the post-stage playback device can achieve. The output audio part of the signal is clipped, resulting in distortion such as figure 1 shown

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  • Audio signal processing method, device and integrated circuit
  • Audio signal processing method, device and integrated circuit
  • Audio signal processing method, device and integrated circuit

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Embodiment Construction

[0047] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0048] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0049] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

[0050] In the descr...

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Abstract

The present invention discloses an audio signal processing method and device and an integrated circuit. The method comprises the steps of predicting the amplitude of an output audio signal processed by a current transfer function, further processing based on the current transfer function when the predicted amplitude is less than an upper limit threshold value, and when the predicted amplitude is higher than the upper limit threshold value, adjusting the processing gain of an input audio signal, so that the amplitude of the corresponding output audio signal is less than or equal to the upper limit threshold value, and accordingly, the peak clipping distortion can be avoided effectively. The audio signal processing method of the present invention is few in steps and simple in data processing, and is easy to realize.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to an audio signal processing method, device and integrated circuit. Background technique [0002] The parametric equalizer is used to adjust the characteristics of the input audio signal according to the needs of the user to obtain the desired effect. The parameters of a parametric equalizer include gain, Q value, and cutoff frequency. For example, the gain can be configured as a positive gain of +12dB. When the amplitude of the input audio signal is large, the amplitude of the output audio signal that should be theoretically obtained according to the user's settings will exceed the physical upper limit that the parametric equalizer can output or that the post-stage playback device can achieve. The output audio part of the signal is clipped, resulting in distortion such as figure 1 shown. This phenomenon is called clipping. Contents of the invention [0003] In view of this,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03G9/00H04R3/00G06F3/16G11B20/10
CPCG06F3/165G11B20/10046H03G9/005H04R3/00
Inventor 吴其昌
Owner NANJING SILERGY SEMICON TECH CO LTD
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