Search

CN-122002169-A - New Chinese sound, multi-band sound field construction method and acoustic performance debugging method

CN122002169ACN 122002169 ACN122002169 ACN 122002169ACN-122002169-A

Abstract

The invention discloses a novel Chinese sound, a multi-band sound field construction method and an acoustic performance debugging method. The novel Chinese sound box comprises a floor frame, a sound box body and an upper box body, wherein the sound box body comprises a sound box body main body and two sound box body door plates rotationally connected with the sound box body main body, the sound box body further comprises two handles, two first decoration pieces and four second decoration pieces, each sound box body door plate is provided with one handle and two second decoration pieces, and the handles are fixedly connected with the sound box body door plates and the first decoration pieces at the same time. The novel Chinese sound, multi-band sound field construction method and acoustic performance debugging method have the advantages that the novel Chinese sound, multi-band sound field construction method and acoustic performance debugging method have novel Chinese aesthetic styles and simultaneously improve the overall bearing effect, a multi-band fusion sound field with coincident vertical directions and coherent horizontal directions is constructed at a preset listening position, and a frequency response curve meets a preset smoothness threshold.

Inventors

  • GU HUOGEN

Assignees

  • 嘉兴迪贝斯电声股份有限公司

Dates

Publication Date
20260508
Application Date
20260320

Claims (10)

  1. 1. The utility model provides a novel chinese style stereo set which characterized in that, including floor frame, low sound box body and last box, wherein: The low sound box body comprises a low sound box body and two low sound box body door plates rotationally connected with the low sound box body, wherein the low sound box body further comprises two handles, two first decorating parts and four second decorating parts, each low sound box body door plate is provided with one handle and two second decorating parts, the handles are fixedly connected with the low sound box body door plates and the first decorating parts at the same time, the handles are positioned between the low sound box body door plates and the first decorating parts, and the second decorating parts are far away from the first decorating parts and are fixedly connected with the low sound box body door plates; The upper box body comprises a coaming, a handle, a top plate and a bottom plate which are fixedly connected with the coaming respectively, wherein the coaming, the top plate and the bottom plate encircle to form a closed accommodating cavity, the upper box body further comprises a front-stage module, the front-stage module is internally arranged in the closed accommodating cavity, and the front-stage module is fixedly connected with the coaming.
  2. 2. The new Chinese sound of claim 1, wherein the second decorative piece is located at the junction of the bass box door panel and the bass box body.
  3. 3. The new Chinese sound box according to claim 1, wherein the bass box body comprises two sound guide pipes and two woofers, a space is reserved between the sound guide pipes and the woofers, and the sound guide pipes and the woofers are located at the bottom of the bass box body and are embedded in the bass box body.
  4. 4. The new Chinese style audio according to claim 1, wherein the bass box further comprises two terminal blocks located on sides of the bass box and embedded in the bass box.
  5. 5. The new chinese style stereo set of claim 1, wherein the upper box further comprises two tweeters and four midrange horns, wherein the tweeters and the midrange horns are both built in the closed accommodating cavity, and the tweeters and the midrange horns are fixedly connected to the inner surface of the coaming respectively.
  6. 6. A multi-band sound field construction method applied to the new Chinese sound according to any one of claims 1 to 5, wherein a front-stage module of the new Chinese sound is implemented as an audio processing circuit, and the audio processing circuit is integrated with a crossover processing unit and a signal delay unit, and the multi-band sound field construction method comprises the following steps: S1, receiving an audio input signal through a front-stage module, and performing frequency division processing on the audio input signal to separate the audio input signal into a low-frequency signal, an intermediate-frequency signal and a high-frequency signal; Step S2, transmitting the low-frequency signals to a woofer in the bass box body, and transmitting the intermediate-frequency signals and the high-frequency signals to a midrange horn and a tweeter in the upper box body; Step S3, acquiring the installation height difference of the bass box body and the upper box body in the vertical direction, and calculating to obtain sound path differences of the bass loudspeaker, the midrange loudspeaker and the treble loudspeaker reaching preset listening positions according to the height difference; Step S4, based on the sound path difference, carrying out delay processing on the intermediate frequency signal and the high frequency signal transmitted to the upper box body so as to compensate the sounding time difference among the woofer, the midrange horn and the tweeter; and S5, controlling the woofer, the midrange loudspeaker and the tweeter to synchronously sound, and constructing a multi-frequency-band fusion sound field with coincident vertical directions and coherent horizontal directions at a preset listening position of the new Chinese sound.
  7. 7. The multiband sound field construction method according to claim 6, wherein in step S1, the crossover point setting of the crossover process includes the steps of: Dividing a signal with a frequency lower than 200Hz into low frequency signals; dividing a signal with a frequency between 200Hz and 2000Hz into intermediate frequency signals; dividing a signal with a frequency higher than 2000Hz into high frequency signals; The audio processing circuit is specifically implemented as a digital signal processing chip, and the digital signal processing chip actively divides the frequency of the audio input signal.
  8. 8. The multi-band sound field construction method according to claim 6, wherein in step S4, the intermediate frequency signal and the high frequency signal are subjected to a delay process, and the intermediate frequency signal and the high frequency signal are also subjected to a phase correction, the phase correction comprising the steps of: The phase curves near the frequency division points of the middle frequency band and the low frequency band are kept smoothly connected by adjusting the Q value of the filter of the digital signal processing chip.
  9. 9. An acoustic performance debugging method applied to the new Chinese sound according to any one of claims 1 to 5, wherein a front-stage module of the new Chinese sound is implemented as an audio processing circuit, and the audio processing circuit is integrated with a frequency division processing unit and a signal delay unit, and the acoustic performance debugging method is characterized by comprising the following steps: step T1, establishing communication connection between a debugging terminal and a front-stage module; step T2, controlling the new Chinese sound equipment to play a preset test signal, wherein the test signal comprises a sweep frequency signal and a pink noise signal; step T3, collecting an actual response signal of the new Chinese sound at a preset listening position by using sound pickup equipment; Step T4, analyzing the actual response signal, and calculating the smoothness index and the low-frequency standing-wave ratio of the frequency response curve; step T5, judging whether the frequency response curve meets a preset smoothness threshold value, if not, generating a parameter adjustment instruction and sending the parameter adjustment instruction to a front-stage module; and step T6, the front-stage module automatically adjusts the gain value and the frequency division point parameter of the corresponding frequency band according to the parameter adjustment instruction, and then repeatedly executes the step T1 until the frequency response curve meets the preset smoothness threshold.
  10. 10. The acoustic performance tuning method of claim 9, wherein step T4 further comprises the steps of: identifying reflection characteristics of the acoustic environment of the new Chinese sound; When detecting that the middle-high frequency band has a frequency response wave peak caused by reflection of the box body surface or indoor furniture, automatically reducing the gain of the corresponding frequency band so as to offset the influence of the reflection on the sound field.

Description

New Chinese sound, multi-band sound field construction method and acoustic performance debugging method Technical Field The invention belongs to the field of sound, and particularly relates to a novel Chinese sound, a multi-band sound field construction method and an acoustic performance debugging method. Background The utility model patent with the publication number of CN212696152U and the subject name of split type sound equipment of home theater, the IPC of which is H04R1/02, discloses that a second sound is installed on the right side of a first sound, a fixing plate is installed at the bottoms of the first sound and the second sound, a base is installed at the lower part of the fixing plate, a cavity is formed in the upper part of the base and an end face close to the fixing plate, a plurality of shock pads are installed in the cavity, supporting legs are welded at four end corners of the lower part of the base, shock absorbing springs are sleeved on the outer sides of the supporting legs, a groove is formed in the right end of the lower base of the first sound, a connecting rod is installed in the groove in a telescopic manner, a connecting groove is formed in the left end of the lower base of the second sound, and the connecting rod is matched with the connecting groove. It can be seen that the above patent has disclosed one of the solutions of the split audio devices for home theatres. However, the technical scheme disclosed in the above patent of the utility model focuses on realizing effective vibration reduction of the sound through a multistage vibration reduction structure, and does not further solve the problems that the whole bearing effect is improved while the novel Chinese aesthetic style is achieved, the multi-frequency band fusion sound field with coincident vertical directions and coherent horizontal directions is constructed at the preset listening position, the preset smoothness threshold is met by a frequency response curve, and the like, and further improvement is needed. Disclosure of Invention Aiming at the state of the art, the invention overcomes the defects and provides a novel Chinese sound, a multi-frequency band sound field construction method and an acoustic performance debugging method. The invention adopts the following technical scheme that the novel Chinese sound box comprises a floor stand, a low sound box body and an upper box body, wherein: The low sound box body comprises a low sound box body and two low sound box body door plates rotationally connected with the low sound box body, wherein the low sound box body further comprises two handles, two first decorating parts and four second decorating parts, each low sound box body door plate is provided with one handle and two second decorating parts, the handles are fixedly connected with the low sound box body door plates and the first decorating parts at the same time, the handles are positioned between the low sound box body door plates and the first decorating parts, and the second decorating parts are far away from the first decorating parts and are fixedly connected with the low sound box body door plates; The upper box body comprises a coaming, a handle, a top plate and a bottom plate which are fixedly connected with the coaming respectively, wherein the coaming, the top plate and the bottom plate encircle to form a closed accommodating cavity, the upper box body further comprises a front-stage module, the front-stage module is internally arranged in the closed accommodating cavity, and the front-stage module is fixedly connected with the coaming. As a preferable mode of the above technical solution, the second decorative piece is located at a joint of the bass box door panel and the bass box body. As the preferable technical scheme of the technical scheme, the bass box body comprises two sound guide pipes and two woofers, a space is reserved between the sound guide pipes and the woofers, and the sound guide pipes and the woofers are located at the bottom of the bass box body and are embedded in the bass box body. As the preferable technical scheme of the technical scheme, the low-sound box body further comprises two junction boxes, and the junction boxes are positioned on the side parts of the low-sound box body and embedded in the low-sound box body. As the preferred technical scheme of above technical scheme, go up the box and still include two tweeters and four midrange horns, tweeter and midrange horn are all built-in closed holding chamber, and tweeter and midrange horn are fixed connection respectively in the internal surface of bounding wall. The invention adopts the following technical scheme, the multi-band sound field construction method is applied to any one of the technical scheme of the new Chinese sound, the front-stage module of the new Chinese sound is specifically implemented as an audio processing circuit, the audio processing circuit is integrated with a crossover processing unit and a signal