Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bass boost circuit and bass boost processing program

A bass and circuit technology, applied in tone control, electrical components, stereo communication earphones, etc., can solve problems such as inability to obtain natural sound, uncoordinated high-order harmonics, and unnaturalness

Inactive Publication Date: 2005-08-31
SANYO ELECTRIC CO LTD
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, higher harmonics are also generated for the higher harmonics of the instrument sound, and when the instrument sound is reproduced, it becomes unnatural.
In addition, in the case of reproducing low-frequency harmonics, the harmonics do not match
When harmonics are generated for a wide-band reference tone, various harmonics are mixed together, and the bass part may not be recognized
[0007] (2) In the case of amplifying only higher harmonics and adding them to the sound signal in music etc., it becomes very unnatural
In addition, the envelope characteristics of higher harmonics generated by full-wave rectification are fixed, and natural sound cannot be obtained

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bass boost circuit and bass boost processing program
  • Bass boost circuit and bass boost processing program
  • Bass boost circuit and bass boost processing program

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 2

[0058] Embodiment 2 differs from Embodiment 1 in the following points.

[0059] (1) High-pass filters (HPF) 4L, 4R are provided in front of the adders 3L, 3R instead of behind. At the same time, a band-pass filter (BPF2) 16 having both functions of a low-pass filter (LPF1) 14 and a high-pass filter (HPF) 4L, 4R is used instead of the low-pass filter arranged behind the full-wave rectification circuit 13 filter (LPF) 14 .

[0060] (2) In order to further alleviate the sense of misalignment caused by emphasizing only a specific band of the original sound, a series circuit connected in parallel with the low-pass filter (LPF2) 6L (6R) and the amplifier 7L (7R) is also set. A series circuit composed of a pass filter (LPF3) 9L (9R) and an amplifier 10L (10R). The characteristics of the low-pass filter (LPF2) 6L (6R) and the low-pass filter (LPF3) 9L (9R) in this case are shown in Table 2, for example. In addition, if the gain of the amplifier 7L (7R) that amplifies the signal tha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

There is provided a first adder which synthesizes input audio signals in a plurality of channels, a first band-pass filter which transmits only a signal in a predetermined frequency band in the audio signals synthesized by the first adder, and a full-wave rectification circuit which generates an even-order harmonic signal of the audio signal transmitted from the first band-pass filter. A lower limit frequency of the first band-pass filter is set at a value such that a frequency interval between adjacent orders of the even-order harmonic signal generated by the full-wave rectification circuit is not less than a critical bandwidth of a signal frequency band from a reproduction lower limit frequency of a speaker to be used to an upper limit frequency of a harmonic wave to be used to boost the bass.

Description

technical field [0001] The present invention relates to a bass emphasizing circuit and a bass emphasizing processing program capable of enhancing the sense of bass in the case of using a small speaker or a headset with low bass reproduction capability. Background technique [0002] When listening to the sound composed of 2f, 3f, 4f, ... signals of the higher harmonics of the signal of the reference frequency f, even if the signal of the reference frequency f is not included, the sound of the frequency f can be felt. The sound is reproduced, which is an auditory psychological phenomenon. [0003] In addition, there are various methods for generating harmonics, among which the simplest method is to generate even-numbered harmonics by performing full-wave rectification on a reference frequency signal. [0004] However, bass reproduction capability is primarily limited by speaker volume. Therefore, sufficient bass reproduction capability cannot be obtained from a small speaker...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/00H03G5/00H03G5/22H04R3/04H04R5/033H04S1/00
CPCH03G5/22
Inventor 吉田昌弘
Owner SANYO ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com