CN108449688A - Studio broadcast audio-frequency processing method, apparatus and system - Google Patents
Studio broadcast audio-frequency processing method, apparatus and system Download PDFInfo
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- CN108449688A CN108449688A CN201810227612.2A CN201810227612A CN108449688A CN 108449688 A CN108449688 A CN 108449688A CN 201810227612 A CN201810227612 A CN 201810227612A CN 108449688 A CN108449688 A CN 108449688A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
Abstract
The present invention provides a kind of studio broadcast audio-frequency processing method, apparatus and systems；This method is applied to the audio processing equipment of studio broadcast sound reinforcement system, and method includes：Receive audio to be played；According to the filter pre-established, audio is filtered；Wherein, filter is established according to the reverberation time of indoor each frequency range；The audio after playback process.The present invention generates filter by the reverberation time of each frequency range, to be played again after being filtered to audio to be played, improves the sound articulation of studio broadcast system, improves the result of broadcast of audio.
Description
Technical field
The present invention relates to signal processing technology field, more particularly, to a kind of studio broadcast audio-frequency processing method, device and
System.
Background technology
Sound source radiation in room goes out sound wave, and sound wave can be reflected in communication process by room wall surface, gradually decays.Sound wave declines
The speed subtracted is related to the sound absorption characteristics of wall surface material.The referred to as room reverberation of the phenomenon that this roundtrip, gradual decaying.Reverberation
Time is the physical quantity for describing acoustic attenuation speed degree, is a mostly important parameter for describing indoor tone quality.In general,
Certain reverberation time can make sound full and natural, have facilitation to sound quality raising, but the long reverberation time is then easy
Keep sound muddy, clarity reduces.
Sound reinforcement system is broadcasted for larger room (such as large conference room, hall, gymnasium, waiting hall, large-scale classroom
Deng) when, room acoustics processing is extremely important.If processing is not proper, the reverberation time is long, and sound can then emit back and forth, before causing
Syllables afterwards cause sound muddy, and similar roar seriously affects the perceived sharpness of broadcasting listener.Especially when broadcasting sound
Frequency content low frequency is more, word speed or when very fast music rhythm, and this phenomenon is especially apparent.
Currently, being improved according to room characteristic there are mainly two types of the modes for broadcasting sound reinforcement system sound articulation：One is measurements
The transmission function that certain is put in loud speaker and room carries out equilibrium to loudspeaker response, eliminates the influence of the room-resonance；In addition
A kind of mode equally first measures the transmission function of certain point in loud speaker and room, is then believed broadcast by way of liftering
It number is filtered, to eliminate the influence of propagation path.It (is measured for specific in room however, both modes are all values
Point) audio frequency effect improve, when measurement point changes, need to remeasure.In big room, especially public arena,
When listener position is not fixed, it can not ensure the audio result of broadcast in entire room.
Invention content
In view of this, the purpose of the present invention is to provide a kind of studio broadcast audio-frequency processing method, apparatus and system, to increase
The sound articulation of strong studio broadcast system, improves audio result of broadcast.
In a first aspect, an embodiment of the present invention provides a kind of studio broadcast audio-frequency processing method, this method is applied to interior
Broadcast the audio processing equipment of sound reinforcement system.This method includes：Receive audio to be played；It is right according to the filter pre-established
Audio is filtered；Wherein, filter is established according to the reverberation time of indoor each frequency range；Audio after playback process.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein sound
Frequency processing equipment and the test equipment of the broadcast sound reinforcement system communicate to connect；This method further includes：Test equipment is received to send
Filter coefficient；Wherein, filter coefficient is that test equipment calculates acquisition according to the reverberation time of indoor each frequency range；According to
Filter coefficient establishes filter.
Second aspect, an embodiment of the present invention provides another studio broadcast audio-frequency processing method, this method is applied to room
The test equipment of interior broadcast sound reinforcement system；The audio processing equipment of the test equipment and above-mentioned broadcast sound reinforcement system communicates to connect.
This method includes：Test signal is generated, test signal is sent to the audio processing equipment, to play test signal；It receives
The corresponding play signal of test signal；According to test signal and the play signal, the reverberation time of each frequency range is calculated；According to
Reverberation time calculates and obtains filter bank coefficients；Filter bank coefficients are sent to audio processing equipment, so that audio frequency process is set
For according to filter coefficient, filter is established, according to filter, audio is filtered.
In conjunction with second aspect, an embodiment of the present invention provides the first possible embodiment of second aspect, this method
Further include：After generating test signal, test signal is preserved；In the setting time after test signal finishes playing, stop receiving
Test signal preserves test signal.
The third aspect, an embodiment of the present invention provides a kind of studio broadcast apparatus for processing audio, which is set to interior
Broadcast the audio processing equipment of sound reinforcement system.The device includes：Audio receiving module, for receiving audio to be played；Filter mould
Block, for according to the filter pre-established, being filtered to audio；Wherein, filter is according to indoor each frequency range
Reverberation time establishes；Playing module, for the audio after playback process.
In conjunction with the third aspect, an embodiment of the present invention provides the first possible embodiment of the third aspect, above-mentioned sounds
Frequency processing equipment and the test equipment of broadcast sound reinforcement system communicate to connect；The device further includes：Coefficient receiving module, for receiving
The filter coefficient that test equipment is sent；Wherein, filter coefficient is reverberation time of the test equipment according to indoor each frequency range
It calculates and obtains；Filter establishes module, for according to filter coefficient, establishing filter.
Fourth aspect, an embodiment of the present invention provides a kind of studio broadcast apparatus for processing audio, which is set to interior
Broadcast the test equipment of sound reinforcement system；The audio processing equipment of test equipment and broadcast sound reinforcement system communicates to connect；The device packet
It includes：Test signal is sent to the audio processing equipment by signal generation module for generating test signal, to play test
Signal；Receiving module, for receiving the corresponding play signal of test signal；Reverberation time calculates module, for being believed according to test
Number and the play signal, calculate the reverberation time of each frequency range；Coefficients calculation block, for according to the reverberation time, meter
It calculates and obtains filter bank coefficients；Sending module, for filter bank coefficients to be sent to the audio processing equipment, so that audio
Processing equipment establishes filter according to filter coefficient, according to filter, is filtered to audio.
5th aspect, an embodiment of the present invention provides a kind of studio broadcast sound reinforcement system, which includes power amplifying device, surveys
Try equipment and audio processing equipment；Above-mentioned broadcast audio processing unit is set in audio processing equipment；Above-mentioned another broadcast
Apparatus for processing audio is set in test equipment.
In conjunction with the 5th aspect, an embodiment of the present invention provides the first possible embodiments of the 5th aspect, wherein is
System includes speaker；Power amplifying device, audio processing equipment and test equipment are set in the speaker；Alternatively, power amplifying device and audio
Processing equipment is set in the speaker；Alternatively, power amplifying device is set in the speaker.
In conjunction with the 5th aspect, an embodiment of the present invention provides second of possible embodiments of the 5th aspect, wherein on
The system of stating includes mobile terminal；Above-mentioned test equipment is set in mobile terminal.
A kind of studio broadcast audio-frequency processing method provided in an embodiment of the present invention, apparatus and system.This method is applied to room
The audio processing equipment of interior broadcast sound reinforcement system.After receiving audio to be played, according to the filter pre-established, audio is carried out
It is filtered；Wherein, filter is established according to the reverberation time of indoor each frequency range；After filtering, the audio after playback process.It should
Mode generates filter by the reverberation time of each frequency range, to be played again after being filtered to audio to be played, changes
It has been apt to the sound articulation of studio broadcast system, has improved the result of broadcast of audio.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of studio broadcast audio-frequency processing method flow chart provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another studio broadcast audio-frequency processing method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of studio broadcast apparatus for processing audio provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another studio broadcast apparatus for processing audio provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another studio broadcast apparatus for processing audio provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of studio broadcast sound reinforcement system provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another studio broadcast sound reinforcement system provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another studio broadcast sound reinforcement system provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another studio broadcast sound reinforcement system provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another studio broadcast sound reinforcement system provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of another studio broadcast sound reinforcement system provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Since the reverberation time of studio broadcast is difficult control, cause the sound articulation of broadcast poor.Current processing mode
Only in a certain measurement point, it can not ensure the audio result of broadcast in entire room.Based on this, an embodiment of the present invention provides
A kind of studio broadcast audio-frequency processing method, apparatus and system, the technology can be applied to studio broadcast and other audio frequency process neck
In domain.
For ease of understanding the present embodiment, first to a kind of studio broadcast audio disclosed in the embodiment of the present invention at
Reason method describes in detail.
A kind of studio broadcast audio-frequency processing method flow chart shown in Figure 1, this method are applied to studio broadcast public address
The audio processing equipment of system.This method includes：
Step S102 receives audio to be played；
Above-mentioned audio refers to the file of stored voice content.This document can be played or be handled with computer.Common audio lattice
Formula includes CD (track indexed format), MPEG (Moving Picrure Experts Group, dynamic image expert group), MP3
(MPEG Audio Layer-3, dynamic image expert's compression standard audio level 3) etc..
Step S104 is filtered audio according to the filter pre-established；Wherein, filter is according to interior
The reverberation time of each frequency range establishes；
After reverberation time refers to sound source stopping sounding, sound pressure level reduces the time required for 60dB.The reverberation length in room be by
What its absorption and volume size was determined.Reverberation time is too short, and sound is dry, uninteresting unwarm naturally, when reverberation
Between it is long, sound ambiguous can be made：Sound is mellow and full interesting to listen to when suitable.It is established and is filtered according to the reverberation time of each sound wave frequency range
Device is filtered audio using the filter, then sound articulation of the audio when playing is higher, and effect is preferable.
Step S106, the audio after playback process.
Further, above-mentioned audio processing equipment and the test equipment of broadcast sound reinforcement system communicate to connect.This method is also wrapped
It includes：Receive the filter coefficient that test equipment is sent；Wherein, filter coefficient is test equipment according to the mixed of indoor each frequency range
Time calculating is rung to obtain；According to filter coefficient, filter is established.
For example, the filter can be FIR (Finite Impulse Response, there is limit for length's unit impulse response)
Digital filter；After the above-mentioned reverberation time for getting each sound wave frequency range of current indoor, it can be analyzed according to the reverberation time
Go out the information such as distribution situation, the intensity of each wave band；The parameter of digital filter, including filter are set further according to these information
Exponent number, frequency point vector, amplitude point vector etc., to adjust the output amplitude of each frequency range of audio signal；After the completion of parameter setting, then
Filter coefficient is calculated by preset filter, after filter coefficient determines, the amplitude versus frequency characte and phase of the filter
Frequency characteristic is fixed therewith.
An embodiment of the present invention provides a kind of studio broadcast audio-frequency processing method, this method is applied to studio broadcast public address system
The audio processing equipment of system after receiving audio to be played, according to the filter pre-established, is filtered audio；Its
In, filter is established according to the reverberation time of indoor each frequency range；After filtering, the audio after playback process.Which passes through each
The reverberation time of frequency range generates filter, to be played again after being filtered to audio to be played, improves indoor wide
The sound articulation of broadcast system improves the result of broadcast of audio.
The flow chart of another studio broadcast audio-frequency processing method shown in Figure 2, this method are applied to studio broadcast
The test equipment of sound reinforcement system；The audio processing equipment of test equipment and above-mentioned broadcast sound reinforcement system communicates to connect.This method packet
It includes：
Step S202 generates test signal, test signal is sent to the audio processing equipment, to play test letter
Number；
The test signal is scanning signal, and generally 20Hz-8kHz covers most of sound audio that people can hear
Rate.The test signal is stored, for calculating in the follow-up process filter parameter.
Step S204 receives the corresponding play signal of test signal；
Specifically, while playing test signal, microphone in part of detecting receives the signal played, and by the letter
Number storage is in test system；After signal plays stopping t seconds, microphone stops reception and storage assembly.If test signal is broadcast
It has put t1 seconds, has then stored t1+t seconds signals.Wherein, including the signal during reverberation in t seconds.Wherein, which can be with
For individual hand microphone, or the microphone being set to inside mobile terminal.
Step S206 calculates the reverberation time of each frequency range according to test signal and play signal；
Step S208 is calculated according to the reverberation time and is obtained filter bank coefficients；
Filter bank coefficients are sent to audio processing equipment by step S210, according to filter coefficient, to establish filtering
Device is filtered audio according to filter.
Specifically, the above method further includes：After generating test signal, test signal is preserved；It finishes playing in test signal
In setting time afterwards, stops receiving test signal, preserve test signal.
The embodiment of the present invention additionally provides another studio broadcast audio-frequency processing method, and this method includes two parts, test
Certain applications are in the test module of broadcast system (being above-mentioned broadcast sound reinforcement system)；Process part is applied to the number of broadcast system
Word signal processing module.
Wherein, part of detecting method includes：Test signal is generated, broadcast system is sent to and plays out, while storing should
Signal, for subsequently calculating the reverberation time；While play signal, microphone receives acoustical signal, is stored；Believe in broadcast
Number stop t second after, microphone stop receive and store acoustical signal；Divided according to generation signal and microphone received signal
Analysis, calculates the reverberation time of each frequency range；According to the reverberation time of each frequency range, filter bank coefficients are obtained, while being sent to wide
The digital signal processing module broadcast.
Wherein, process part method includes：The filter bank coefficients of part of detecting are received, filter is generated；Receive audio
Signal is filtered by filter group, is then played.
Above-mentioned studio broadcast audio-frequency processing method can obtain the reverberation time in room by automatic measurement mode, pass through each frequency
The reverberation time of band generates filter, adjusts the audio signal output amplitude of each frequency range, so as to improve the sound of broadcast sound amplifier
Clarity.
A kind of structural schematic diagram of studio broadcast apparatus for processing audio shown in Figure 3, the device are set to indoor wide
Broadcast the audio processing equipment of sound reinforcement system.The device includes：Audio receiving module 300, for receiving audio to be played；Filter mould
Block 302, for according to the filter pre-established, being filtered to audio；Wherein, filter is according to indoor each frequency range
Reverberation time establish；Playing module 304, for the audio after playback process.
Specifically, above-mentioned audio receiving module can be microphone and storage device.After microphone receives audio file, by sound
Frequency file is stored into storage device, is used for subsequent processing and broadcasting.Audio receiving module can by radio communication or cable modem
The mode of letter is connected with filter module, is carried out data transmission.
Further, above-mentioned audio processing equipment and the test equipment of broadcast sound reinforcement system communicate to connect；The device also wraps
It includes：Coefficient receiving module, the filter coefficient for receiving test equipment transmission；Wherein, filter coefficient is test equipment root
It calculates and obtains according to the reverberation time of indoor each frequency range；Filter establishes module, for according to filter coefficient, establishing filtering
Device.
The structural schematic diagram of another studio broadcast apparatus for processing audio shown in Figure 4, the device are set to interior
Broadcast the test equipment of sound reinforcement system；The audio processing equipment of test equipment and broadcast sound reinforcement system communicates to connect；The device packet
It includes：Test signal is sent to the audio processing equipment by signal generation module 400 for generating test signal, is surveyed with playing
Trial signal；Receiving module 402, for receiving the corresponding play signal of test signal；Reverberation time calculates module, for according to survey
Trial signal and the play signal, calculate the reverberation time of each frequency range；Coefficients calculation block 404, for according to the reverberation
Time calculates and obtains filter bank coefficients；Sending module 406, for filter bank coefficients to be sent to audio processing equipment, with
Make audio processing equipment according to filter coefficient, establish filter, according to filter, audio is filtered.
Specifically, the test signal that signal generation module generates is scanning signal, and generally 20Hz-8kHz covers people
The most of sound frequency that can be heard.Audio receiving module receives the signal of broadcasting, and will while test signal plays
In signal storage to test system.
The embodiment of the present invention additionally provides another studio broadcast apparatus for processing audio, which includes microphone acquisition portion
Point, the part is for collecting the corresponding play signal of test signal；The microphone can be hand microphone, or set
The microphone being placed in inside mobile terminal；The signal received can be passed through movement eventually by being set to the microphone inside mobile terminal
Test module part is given in audio output portion (earpiece holes etc.) output at end；Locate for generating test signal test module part
The corresponding play signal of test signal is managed, the reverberation time of each frequency range is calculated, to calculate generation filter, obtains filter
Filter bank coefficients are sent to the real-time process part of following audios by group coefficient；The real-time process part of audio, for accepting filter
Device group coefficient, the audio being filtered to audio to be played after simultaneously playback process are another studio broadcast sound as shown in Figure 5
The structure and functional schematic of frequency processing device.
A kind of structural schematic diagram of studio broadcast sound reinforcement system shown in Figure 6, the system include power amplifying device 60, survey
Try equipment 61 and audio processing equipment 62；Above-mentioned broadcast audio processing unit is set in audio processing equipment；Above-mentioned another kind
Broadcast audio processing unit is set in test equipment.
Further, which includes speaker；Power amplifying device, audio processing equipment and test equipment are set to the speaker
In；Alternatively, power amplifying device and audio processing equipment are set in the speaker；Alternatively, power amplifying device is set in the speaker.
Further, which includes mobile terminal；Above-mentioned test equipment is set in mobile terminal.
Further, which further includes microphone.
Specifically, the structural schematic diagram of another studio broadcast sound reinforcement system shown in Figure 7.Active audio amplifier collection audio
Frequency processing equipment, power amplifying device and test equipment, while having there are microphone interface, it can be surveyed with external auxiliary microphone
Amount；The function of measuring apparatus and processing equipment is completed by active audio amplifier.
Specifically, the structural schematic diagram of another studio broadcast sound reinforcement system shown in Figure 8.It is integrated in active audio amplifier
Audio processing equipment and power amplifying device.Test equipment connects microphone as individual equipment, receives the audio that microphone is collected
Signal handles audio signal；After obtaining filter coefficient, filter coefficient is sent out by wirelessly or non-wirelessly network mode
Give active audio amplifier.
Specifically, the structural schematic diagram of another studio broadcast sound reinforcement system shown in Figure 9, audio processor are integrated
Audio processing equipment and test equipment.Audio processing equipment carries out the measurement of reverberation time by external microphone, generates filter
Wave device coefficient is applied directly on the filter (i.e. audio processing equipment) of audio processor；Audio signal passes through audio frequency process
After the filtering part output of device, played directly to active audio amplifier；Power amplifying device can also be integrated on audio processor, at this moment sound
Case is passive loudspeaker box.Wherein, which can be individual hand microphone, or be set to inside mobile terminal
Microphone.
Specifically, the structural schematic diagram of another studio broadcast sound reinforcement system shown in Figure 10, (such as by mobile terminal
Tablet or mobile phone etc.) microphone as measure microphone, mobile microphone receive acoustical signal after, be sent to clothes through wireless network
Business device, server calculate the reverberation time as measuring apparatus and audio processing equipment, generate filter, be filtered to audio
Processing, by treated, audio is sent to network speaker through wired or wireless network.
Specifically, the structural schematic diagram of another studio broadcast sound reinforcement system shown in Figure 11, (such as by mobile terminal
Tablet or mobile phone etc.) microphone as microphone is measured, while mobile phone passes through the test signal of generation as test equipment
Wireless mode is sent to network speaker through server；Filter coefficient is calculated after mobile phone terminal test, is sent to server；Server
Audio processing equipment is included, after filtered, network speaker be sent to by wired or wireless way and play out.
Studio broadcast audio frequency processing system provided in an embodiment of the present invention, the studio broadcast audio provided with above-described embodiment
Processing method, device technical characteristic having the same reach identical technology effect so can also solve identical technical problem
Fruit.
The computer program product of studio broadcast audio-frequency processing method, apparatus and system that the embodiment of the present invention is provided,
Computer readable storage medium including storing program code, the instruction that said program code includes can be used for executing front side
Method described in method embodiment, specific implementation can be found in embodiment of the method, and details are not described herein.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of studio broadcast audio-frequency processing method, which is characterized in that the method is applied to the sound of studio broadcast sound reinforcement system
Frequency processing equipment；The method includes：
Receive audio to be played；
According to the filter pre-established, the audio is filtered；Wherein, the filter is according to indoor each frequency
The reverberation time of section establishes；
The audio after playback process.
2. according to the method described in claim 1, it is characterized in that, the audio processing equipment and the broadcast sound reinforcement system
Test equipment communicates to connect；The method further includes：
Receive the filter coefficient that the test equipment is sent；Wherein, the filter coefficient is the test equipment according to room
The reverberation time of interior each frequency range, which calculates, to be obtained；
According to the filter coefficient, the filter is established.
3. a kind of studio broadcast audio-frequency processing method, which is characterized in that the method is applied to the survey of studio broadcast sound reinforcement system
Try equipment；The audio processing equipment of the test equipment and the broadcast sound reinforcement system communicates to connect；The method includes：
Test signal is generated, the test signal is sent to the audio processing equipment, to play the test signal；
Receive the corresponding play signal of the test signal；
According to the test signal and the play signal, the reverberation time of each frequency range is calculated；
According to the reverberation time, calculates and obtain filter bank coefficients；
The filter bank coefficients are sent to the audio processing equipment, so that the audio processing equipment is according to the filtering
Device coefficient, establishes filter, according to the filter, is filtered to audio.
4. according to the method described in claim 3, it is characterized in that, the method further includes：
After generating the test signal, the test signal is preserved；
In the setting time after the test signal finishes playing, stop receiving the test signal, preserves the test letter
Number.
5. a kind of studio broadcast apparatus for processing audio, which is characterized in that described device is set to the sound of studio broadcast sound reinforcement system
Frequency processing equipment；Described device includes：
Audio receiving module, for receiving audio to be played；
Filter module, for according to the filter pre-established, being filtered to the audio；Wherein, the filter
It is established according to the reverberation time of indoor each frequency range；
Playing module, for the audio after playback process.
6. device according to claim 5, which is characterized in that the audio processing equipment and the broadcast sound reinforcement system
Test equipment communicates to connect；Described device further includes：
Coefficient receiving module, the filter coefficient sent for receiving the test equipment；Wherein, the filter coefficient is institute
It states test equipment and acquisition is calculated according to the reverberation time of indoor each frequency range；
Filter establishes module, for according to the filter coefficient, establishing the filter.
7. a kind of studio broadcast apparatus for processing audio, which is characterized in that the method is set to the survey of studio broadcast sound reinforcement system
Try equipment；The audio processing equipment of the test equipment and the broadcast sound reinforcement system communicates to connect；Described device includes：
The test signal is sent to the audio processing equipment by signal generation module for generating test signal, to play
The test signal；
Receiving module, for receiving the corresponding play signal of the test signal；
Reverberation time calculates module, is used for according to the test signal and the play signal, when calculating the reverberation of each frequency range
Between；
Coefficients calculation block, for according to the reverberation time, calculating and obtaining filter bank coefficients；
Sending module, for the filter bank coefficients to be sent to the audio processing equipment, so that the audio frequency process is set
For according to the filter coefficient, filter is established, according to the filter, audio is filtered.
8. a kind of studio broadcast sound reinforcement system, which is characterized in that the system comprises power amplifying device, test equipment and audio frequency process
Equipment；
Broadcast audio processing unit described in claim 5 is set in the audio processing equipment；It is wide described in claim 7
Broadcast frequency processing device is set in the test equipment.
9. system according to claim 8, which is characterized in that the system comprises speakers；
The power amplifying device, the audio processing equipment and the test equipment are set in the speaker；Alternatively, the power amplifier
Equipment and the audio processing equipment are set in the speaker；Alternatively, the power amplifying device is set in the speaker.
10. system according to claim 8, which is characterized in that the system comprises mobile terminals；The test equipment is set
It is placed in mobile terminal or the receiving module is set in mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810227612.2A CN108449688A (en) | 2018-03-19 | 2018-03-19 | Studio broadcast audio-frequency processing method, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810227612.2A CN108449688A (en) | 2018-03-19 | 2018-03-19 | Studio broadcast audio-frequency processing method, apparatus and system |
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| CN111711914A (en) * | 2020-06-15 | 2020-09-25 | 杭州艾力特数字科技有限公司 | Sound amplification system with reverberation time measuring function |
| CN111757235A (en) * | 2020-06-15 | 2020-10-09 | 杭州艾力特数字科技有限公司 | Sound expansion system with classroom language definition measuring function |
| CN112382305A (en) * | 2020-10-30 | 2021-02-19 | 北京百度网讯科技有限公司 | Method, apparatus, device and storage medium for adjusting audio signal |
| CN112584277A (en) * | 2020-12-08 | 2021-03-30 | 北京声加科技有限公司 | Indoor audio frequency equalizing method |
| CN113808569A (en) * | 2021-11-19 | 2021-12-17 | 科大讯飞(苏州)科技有限公司 | Reverberation construction method and related equipment thereof |
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