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Method for generating harmonics using fourier transform and apparatus thereof, method for generating harmonics by down-sampling and apparatus thereof and method for enhancing sound and apparatus there

A technology for generating devices and overtones, which is applied to overtone generation and devices, and can solve problems such as high complexity and difficulty in implementation.

Inactive Publication Date: 2007-03-21
INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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  • Application Information

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Problems solved by technology

[0007] However, existing sound enhancement devices with higher-precision multi-passband filters have high-complexity and are difficult to implement

Method used

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  • Method for generating harmonics using fourier transform and apparatus thereof, method for generating harmonics by down-sampling and apparatus thereof and method for enhancing sound and apparatus there
  • Method for generating harmonics using fourier transform and apparatus thereof, method for generating harmonics by down-sampling and apparatus thereof and method for enhancing sound and apparatus there
  • Method for generating harmonics using fourier transform and apparatus thereof, method for generating harmonics by down-sampling and apparatus thereof and method for enhancing sound and apparatus there

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Embodiment Construction

[0041] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0042] The sound signal input to the device in the present invention is a continuous signal (continuous signal) and a discrete signal (discrete signal) sampled at a preset frequency.

[0043] FIG. 1 is a block diagram of an overtone generator for bass enhancement according to an embodiment of the present invention.

[0044] As shown in Figure 1, the overtone generating device 100 for bass enhancement of an embodiment of the present invention includes: a phasing (phasing) part 110, a fast Fourier transform (FFT: fast fourier transform) part 120, a sine wave generating part 130; part 140, bandpass filter part 150; HRTF part 160 and combining part 170.

[0045] The above-mentioned phasing unit 110 receives multi-channel sound signals through the left and right channels, such as the input of stereo signals, in order to reduce the correlation ...

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Abstract

The invention relates to a method for generating overtone, an apparatus, and a method for enhancing sound and an apparatus, particularly, the invention enhances a low sound by using a Fourier transform to replace a multi-band-pass filter with a high complexity and a high precision which is difficult to be realized, and enhances a high sound by reducing a sampling rate and a frame repetition number. The invention provides an overtone generating apparatus using Fourier transforms, which includes a Fourier transform unit for performing a Fourier transform on an inputted sound signal and outputting a Fourier coefficient value of an arbitrary frequency component of the sound signal; a sine wave generating unit for generating a sine wave signal whose size and frequency are corresponding to the Fourier coefficient value; and an overtone generating unit for generating an overtone signal of the sine wave signal.

Description

technical field [0001] The present invention relates to an overtone generation method and device using Fourier transform, a method and device for overtone generation by reducing the sampling rate, and a sound enhancement method and device. A high-speed multi-passband filter enhances the bass and enhances the treble through downsampling and frame repetition. Background technique [0002] With the rapid development of signal processing technology and related devices, various signal processing methods have been developed in pursuit of more three-dimensional sound. In particular, in order to provide users with realistic sounds close to the original sound, various low-frequency and high-frequency sound enhancement methods have recently been provided. [0003] In sound playback systems such as low-priced headphones, the sound signal in the low frequency band is significantly attenuated compared with the sound signal in the mid-high frequency band. In order to solve this problem,...

Claims

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Application Information

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IPC IPC(8): G10H1/06G10H1/16G10L19/008H04S1/00
CPCG10H1/06G10L19/008H04S1/00
Inventor 南允爱康泰益维奇·H·山科尔
Owner INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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