Compensating filter fitting system, sound compensation system and methods

A compensation filter, analog system technology, applied in the direction of instruments, sensors, transducer circuits, etc., can solve problems such as unsatisfactory, loss delay or distortion

Active Publication Date: 2017-01-25
菁音电子科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a compensation filter fitting system, an acoustic compensation system and a method, which are used to solve the problems existing in the prior art

Method used

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  • Compensating filter fitting system, sound compensation system and methods
  • Compensating filter fitting system, sound compensation system and methods
  • Compensating filter fitting system, sound compensation system and methods

Examples

Experimental program
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Embodiment 1

[0092] see figure 1 , the compensation filter fitting system at least includes: a target system (not shown), the target includes a first transfer function module (not shown), the target system is adapted to pass the input sound signal through the first Output target sound signal w(k) after the first transfer function processing in a transfer function module; Simulation system 1, described simulation system 1 is connected with described target system, and described simulation system 1 comprises the second transfer function module ( not shown), adapted to process the input target sound signal w(k)) through the second transfer function in the second transfer function module to output an analog sound signal ym(k)) that simulates the target sound signal ; Fitting module 2, the fitting module 2 is connected with the target system and the simulation system 1, and is suitable for fitting the target sound signal with the simulated sound signal ym(k), to obtain Parameters of the compen...

Embodiment 2

[0125] see Figure 7 , the present invention also provides a fitting method of a compensation filter, the fitting method of the compensation filter at least includes:

[0126] 1) Obtain the target sound signal processed by the first transfer function in the target system;

[0127] 2) Obtaining the analog sound signal processed by the second transfer function in the analog system;

[0128] 3) Fitting is performed according to the target sound signal and the simulated sound signal to obtain parameters of the compensation filter.

[0129] As an example, in the step 1), it is first assumed that the electrical signal input to the target system is a sequence of x(0), x(1)...x(n), and the human ear hears (or mic (microphone) recording Obtained) is the sequence of y(0), y(1)...y(n), and the relationship between them can be expressed as:

[0130] a0y(n)+a1y(n-1)...+ajy(n-j)=b0x(n)+b1x(n-1)...+bk(n-k)

[0131] or

[0132] in, That is, the transfer function of the target sound s...

Embodiment 3

[0155] see Figure 8 , the present invention also provides a sound compensation system, the sound simulation system at least includes: a simulation system 1, the simulation system 1 is suitable for generating an analog sound signal according to the target sound signal provided by the target system, and the analog sound signal is used To simulate the sound signal of the target sound signal; compensation filter 3, the compensation filter 3 includes an input terminal and an output terminal; the input of the compensation filter 3 is connected to the target system, and the compensation filter The output terminal of 3 is connected to the input terminal of the analog system 1, and is suitable for processing the sound signal input to the analog system 1, so that the energy variance between the analog sound signal and the target sound signal is minimized; The parameters of the compensation filter 3 are obtained by the compensation filter fitting system described in the first embodiment...

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Abstract

The invention provides a compensating filter fitting system, a sound compensation system and methods. The compensating filter fitting system comprises a target system, a simulation system and a fitting module, wherein the target system comprises a first transfer function module and is suitable for outputting target sound signals after input sound signals are processed with a first transfer function in the first transfer function module; the simulation system is connected with the target system, comprises a second transfer function module and is suitable for outputting simulated sound signals after the input target sound signals are processed with a second transfer function in the second transfer function module; the fitting module is connected with the target system and the simulation system and is suitable for fitting the target sound signals and the simulated sound signals, so that parameters of the compensating filter connected with the input end of the simulation system are obtained. By means of acquisition and addition of the compensating filter, distortion of the simulation system can be eliminated, and the target sound signals can be restored with high quality; one simulation system can be used for simulating other different types of sounds with different tone quality laterality.

Description

technical field [0001] The invention relates to the field of audio, in particular to a compensation filter fitting system, a sound compensation system and a method. Background technique [0002] In all audio systems, including various earphones and speaker systems, due to factors such as its own structure, as well as from the sound signal played through the air, spatial reflection, and the sound heard by the ear will have various differences compared with the original sound. loss, delay or distortion. Especially for poor quality sound system distortion is large. [0003] For earphones, at present, whether it is an active earphone or a passive earphone (active, passive refers to whether the earphone has its own power supply) can only emit sound with its own characteristics. Some headphones can restore the original sound very well, some headphones have rich bass, and some have bright treble. But the same headset now only embodies one feature, which cannot meet the various n...

Claims

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Application Information

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IPC IPC(8): H04R1/10H04R1/22H04R3/00H04R3/04G06F17/50
CPCG06F30/20H04R1/1091H04R1/22H04R3/00H04R3/04
Inventor 何小学林骏
Owner 菁音电子科技(上海)有限公司
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