CN102013252A - Sound effect adjusting method and sound playing device - Google Patents
Sound effect adjusting method and sound playing device Download PDFInfo
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- CN102013252A CN102013252A CN2010105276984A CN201010527698A CN102013252A CN 102013252 A CN102013252 A CN 102013252A CN 2010105276984 A CN2010105276984 A CN 2010105276984A CN 201010527698 A CN201010527698 A CN 201010527698A CN 102013252 A CN102013252 A CN 102013252A
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Abstract
The embodiment of the invention discloses a sound effect adjusting method and also provides a corresponding sound playing device. In the technical scheme of the invention, shape parameters of a space at which the sound playing device is located and reverberation time are acquired firstly, then a corresponding digital signal optimization algorithm is determined according to the acquired shape parameters, digital audio signals to be played are acquired, optimization is carried out on the digital audio signals according to the shape parameters and the reverberation time by utilizing the acquired digital signal optimization algorithm, and then the optimized digital audio signals are output, thus the optimum audio playing effect in the specified space is achieved.
Description
Technical field
The present invention relates to electronic applications, be specifically related to a kind of audio control method and sound play device.
Background technology
Ultrasound wave is a kind of sound wave that surpasses people's audibility range, and it is harmless, ultrasound wave does not have penetrability to object, run into blocking promptly of object and reflect, ultrasonic detector is to have utilized hyperacoustic characteristic, by launching ultrasound wave, and receive the ultrasound wave that returns, and the statistics energy and time of launching and hyperacoustic energy and the time that receives reflected back, come the average sound absorption coefficient on calculated room surface according to energy difference, according to the mistiming measuring distance.
Reverberant sound is form room sound field a kind of, all is called reverberant sound than the repeatedly reflected sound more than the late 50ms of direct sound wave.Reverberation acoustic energy increases the richness of music, but can reduce the sharpness of sound and the intelligibility of language when increasing the music richness, so the reverberant sound composition can not have, can not be excessive.The index of reverberation effect is the reverberation time, reverberation time can by Sabine formula famous in the architectural acoustics: T=0.161V/ (S * a) obtain, wherein T is the reverberation time, V is a room volume, S is the total surface area of room metope, and a is the average sound absorption coefficient of room surface.
Digital signal optimized Algorithm (DSP, Digital Signal Processing) be to realize software reverberation effect device in the prior art, main effect is to produce sound field effect and special sound effect, strengthen or weaken specific reverberation effect with this, the main method that it is realized is to reverberant sound and frequency spectrum, time-delay is handled, adjusting to reverberant sound and frequency spectrum, the processing of reverberant sound frequency spectrum, processing of the ratio of the attenuation characteristic of reverberant sound and reverberant sound and direct sound wave or the like, the major parameter of input has: the length of spatial model, width, height and reverberation time.
In order to reach best acoustical quality, at present existing a lot of existing reverberation models, as half reverb model, RMR room reverb model, board-like reverberation model, counter-rotating reverberation model or the like, in a lot of players, the user can manually select suitable reverberation model that music is play according to the type of music and environment.
In research and practice process to prior art, the present inventor finds that it at first is inconvenient manually selecting reverberation model; Moreover, have only the professional person of audio frequency aspect just can know quite well to the characteristic of reverberant sound and the difference between the reverberation type, concerning general user, manually select reverberation model to select wrong reverberation model to cause the audio variation easily.
Summary of the invention
The embodiment of the invention provides a kind of audio control method and sound play device, has realized that intelligently audio frequency obtains best result of broadcast in specific space.
A kind of audio control method comprises:
Obtain the form parameter in space, sound play device place, and the reverberation time;
Determine the digital signal corresponding optimized Algorithm according to the form parameter of obtaining;
Obtain the digital audio and video signals that is about to broadcast;
The digital signal optimized Algorithm of the digital audio and video signals utilization that is about to play being obtained according to the form parameter of obtaining and reverberation time is optimized;
Output is through the digital audio and video signals after optimizing.
A kind of sound play device comprises:
First acquisition module is used to obtain the form parameter in space, sound play device place, and the reverberation time;
Second acquisition module is used for determining the digital signal corresponding optimized Algorithm according to the form parameter that first acquisition module obtains;
The 3rd acquisition module is used to obtain the digital audio and video signals that is about to broadcast;
Optimal module is used for the digital signal optimized Algorithm that digital audio and video signals that the form parameter obtained according to first acquisition module and reverberation time obtain the 3rd acquisition module utilizes second acquisition module to obtain and is optimized;
Output module is used to export the digital audio and video signals through after the optimal module optimization.
The embodiment of the invention adopts obtains the form parameter in space, sound play device place, and the reverberation time, the spatial model built-in with sound play device mates, and utilize corresponding D SP optimized Algorithm that digital audio and video signals is optimized, make audio frequency in specific space, obtain best result of broadcast, even the present invention also can reach same effect to the off one's beat user of music, made things convenient for the user.
Description of drawings
Fig. 1 is the schematic flow sheet of audio control method in the embodiment of the invention;
Fig. 2 is the schematic flow sheet of audio control method in the embodiment of the invention;
Fig. 3 is the schematic flow sheet of audio control method in the embodiment of the invention;
Fig. 4 A is the logical organization synoptic diagram of sound play device in the embodiment of the invention;
Fig. 4 B is the logical organization synoptic diagram of sound play device in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of audio control method, and the embodiment of the invention also provides corresponding device thereof.Below be elaborated respectively.
See also Fig. 1, a kind of first embodiment of audio control method in the embodiment of the invention, specific as follows:
101, obtain the form parameter in space, sound play device place, and the reverberation time;
A ultrasonic sensor can be installed on sound play device, when sound play device is opened this ultrasonic sensor to around launch ultrasound wave, and the energy of writing time and ultrasonic waves transmitted; Can reflect behind the restraining mass of ultrasound wave around running into, ultrasonic sensor receives the ultrasound wave that reflects, and the hyperacoustic time and the energy of recorder reflection;
Time, energy during ultrasound wave that the time during according to ultrasonic emitting, energy and reception reflect obtain mistiming and energy difference;
Calculate the form parameter in space, sound play device place according to calculating the mistiming and the hyperacoustic velocity of propagation that obtain, this form parameter can be length, width and the height in space, calculates the volume and the surface area in this space according to length, width and the altitude gauge in space; Also can come the volume and the surface area of computer memory with the ball integration under the spherical coordinate system;
Calculate the average sound absorption coefficient of sound play device place spatial surface according to the energy difference that calculates;
Volume, surface area and average sound absorption coefficient according to space, sound play device place utilize the Sabine formula to calculate reverberation time, reverberation time=0.161 * volume ÷ (surface area * average sound absorption coefficient).
102, determine the digital signal corresponding optimized Algorithm according to form parameter;
Determine the digital signal corresponding optimized Algorithm according to the form parameter of obtaining in the step 101; Concrete:
Can set in advance two groups of mapping relations in sound play device this locality: the mapping relations of volume, surface area and the spatial model in space, sound play device place, and, the mapping relations of spatial model and dsp optimization algorithm index, mapping relations can realize with mapping table, image or tree or the like; And set in advance the dsp optimization algorithms library in sound play device this locality, in the dsp optimization algorithms library, corresponding one by one between dsp optimization algorithm index and the concrete dsp optimization algorithm;
Calculate volume, the surface area in space, sound play device place according to the form parameter of obtaining, from the mapping relations of volume, surface area and the spatial model in the space that sets in advance, finding the volume that calculates and the spatial model of surface area correspondence according to the volume that calculates and surface area; From the mapping relations of spatial model and digital signal optimized Algorithm index, inquire corresponding dsp optimization algorithm index according to the spatial model that obtains again, from the dsp optimization algorithms library, obtain concrete dsp optimization algorithm according to the dsp optimization algorithm index that obtains again.
103, obtain the digital audio and video signals that is about to broadcast;
Obtaining the digital audio and video signals that is about to broadcast, can be directly to obtain digital audio and video signals, also can receive simulated audio signal earlier, converts this simulated audio signal to digital audio and video signals again.
104, utilize the digital signal optimized Algorithm to be optimized according to form parameter and reverberation time to digital audio and video signals;
According to the form parameter of obtaining in the step 101 and reverberation time of calculating according to this form parameter, the dsp optimization algorithm that the digital audio and video signals utilization of obtaining in the step 103 is obtained in step 102 is optimized.
105, output is through the digital audio and video signals after optimizing.
In the present embodiment, by a ultrasonic sensor is installed on sound play device, measure the length in space, sound play device place by ultrasonic sensor, width, the average sound absorption coefficient of height and space metope, and according to the volume and the surface area of this form parameter computer memory, and then calculate according to this volume, surface area and average sound absorption coefficient calculate the reverberation time, find corresponding spatial model and the dsp optimization algorithm corresponding according to volume and surface area then with this spatial model, utilize the length that calculates again, width, height and reverberation time parameter, utilize corresponding dsp optimization algorithm, digital audio and video signals is optimized, make this digital audio and video signals in front space, obtain best voice playing effect, even the present invention also can reach same effect to the off one's beat user of music, and is convenient for users.
See also Fig. 2, a kind of second embodiment of audio control method in the embodiment of the invention, specific as follows:
201, obtain the form parameter in space, sound play device place, and the reverberation time;
A ultrasonic sensor can be installed on sound play device, when sound play device is opened this ultrasonic sensor to around launch ultrasound wave, and the energy of writing time and ultrasonic waves transmitted; Can reflect behind the restraining mass of ultrasound wave around running into, ultrasonic sensor receives the ultrasound wave that reflects, and the hyperacoustic time and the energy of recorder reflection;
Time, energy during ultrasound wave that the time during according to ultrasonic emitting, energy and reception reflect obtain mistiming and energy difference;
Calculate the form parameter in space, sound play device place according to calculating the mistiming and the hyperacoustic velocity of propagation that obtain, this form parameter can be length, width and the height in space, calculates the volume and the surface area in this space according to length, width and the altitude gauge in space; Also can come the volume and the surface area of computer memory with the ball integration under the spherical coordinate system;
Calculate the average sound absorption coefficient of sound play device place spatial surface according to the energy difference that calculates;
Volume, surface area and average sound absorption coefficient according to space, sound play device place utilize the Sabine formula to calculate reverberation time, reverberation time=0.161 * volume ÷ (surface area * average sound absorption coefficient).
202, determine corresponding spatial model according to form parameter;
Obtain corresponding acoustic device parameter the mapping relations according to volume, surface area and the spatial model in the volume in the space, sound play device place that goes out to calculate in step 101 and the space, sound play device place that surface area presets in sound play device, form with form is example, and is as shown in table 1:
Table 1
| Spatial model | Volume | Surface area |
| The room | The 0-100 cubic meter | 0-300 square metre |
| The hall | The 100-1000 cubic meter | 300-2500 square metre |
| Music hall | The 1000-10000 cubic meter | 2500-5000 square metre |
If calculating the volume in the space at sound play device place is 90 cubic metres, surface area is 138 square metres, corresponding 0-300 cubic meter and 0-360 square metre scope, and according to this scope, corresponding is the room model.
203, obtain digital signal corresponding optimized Algorithm index the spatial model mapping relations that in sound play device, preset according to the room model of correspondence, be example with the form of form, as shown in table 2:
Table 2
| Spatial model | The digital signal optimized Algorithm |
| The room | A |
| The hall | B |
| Music hall | C |
In the form, the index of the corresponding dsp optimization algorithm of each spatial model is as the A index of the corresponding dsp optimization algorithm in room, the B index of the corresponding dsp optimization algorithm in hall, the C index of the corresponding dsp optimization algorithm of music hall.
204, obtain corresponding D SP optimized Algorithm the dsp optimization algorithms library that in sound play device, presets according to spatial model;
In step 103, obtained the pairing dsp optimization algorithm index of this spatial model according to spatial model, obtain corresponding D SP optimized Algorithm the dsp optimization algorithms library that in sound play device, presets according to this dsp optimization algorithm index again, for example that room model correspondence is dsp optimization algorithm A, then obtains corresponding D SP optimized Algorithm according to A from the dsp optimization algorithms library.
205, obtain the digital audio and video signals that is about to broadcast;
Obtaining the digital audio and video signals that is about to broadcast, can be directly to obtain digital audio and video signals, also can receive simulated audio signal earlier, converts this simulated audio signal to digital audio and video signals again.
206, utilize the dsp optimization algorithm that digital audio and video signals is optimized according to length, width height and reverberation time;
The dsp optimization algorithm was optimized digital audio and video signals according to length, width height and reverberation time, made each concrete space that its unique optimal audio reverberation effect all be arranged.
207, output is through the digital audio and video signals after optimizing.
In the present embodiment, by a ultrasonic sensor is installed on sound play device, measure the length in space, sound play device place by ultrasonic sensor, width, the average sound absorption coefficient of height and space metope, and according to the volume and the surface area of this form parameter computer memory, and then calculate according to this volume, surface area and average sound absorption coefficient calculate the reverberation time, find corresponding spatial model and the dsp optimization algorithm corresponding according to volume and surface area then with this spatial model, utilize the length that calculates again, width, height and reverberation time parameter, utilize corresponding dsp optimization algorithm, digital audio and video signals is optimized, make this digital audio and video signals in front space, obtain best voice playing effect, even the present invention also can reach same effect to the off one's beat user of music, and is convenient for users.
See also Fig. 3, a kind of the 3rd embodiment of audio control method in the embodiment of the invention, specific as follows:
In the present embodiment, we install a ultrasonic sensor on mobile phone, and in mobile phone, preset two groups of mapping relations: the mapping relations of volume, surface area and the spatial model in space, sound play device place, and, the mapping relations of spatial model and dsp optimization algorithm index, mapping relations can realize with mapping table, image or tree or the like; And set in advance the dsp optimization algorithms library in sound play device this locality, in the dsp optimization algorithms library, corresponding one by one between dsp optimization algorithm index and the concrete dsp optimization algorithm;
The mapping relations of volume, surface area and the spatial model in space, sound play device place are example with the form of form, and are as shown in table 3:
Table 3
| Spatial model | Volume | Surface area |
| The room | The 0-100 cubic meter | 0-300 square metre |
| The hall | The 100-1000 cubic meter | 300-2500 square metre |
| Music hall | The 1000-10000 cubic meter | 2500-5000 square metre |
The mapping relations of spatial model and dsp optimization algorithm index are example with the form of form, and are as shown in table 4:
Table 4
| Spatial model | The dsp optimization algorithm |
| The room | A |
| The hall | B |
| Music hall | C |
In the form, the index of the corresponding dsp optimization algorithm of each spatial model is as the A index of the corresponding dsp optimization algorithm in room, the B index of the corresponding dsp optimization algorithm in hall, the C index of the corresponding dsp optimization algorithm of music hall;
The dsp optimization algorithm is called with the form of function, obtains corresponding D SP optimized Algorithm according to the index of dsp optimization algorithm in the dsp optimization algorithms library, and input parameter calls this dsp optimization algorithm then.
301, obtain the form parameter in space, mobile phone place, and the reverberation time;
When the user opens mobile phone space measuring ability, perhaps receive calls the user, when opening music, mobile phone is opened the space measuring ability automatically, spatial model and is set up in space around the scanning, that is: ultrasonic sensor to around launch ultrasound wave, and the energy of writing time and ultrasonic waves transmitted, can reflect behind the restraining mass of ultrasound wave around running into, ultrasonic sensor receives the ultrasound wave that reflects, and the hyperacoustic time and the energy of recorder reflection;
Time, energy during ultrasound wave that the time during according to ultrasonic emitting, energy and reception reflect obtain mistiming, energy difference;
Calculate the length in space, mobile phone place according to calculating the mistiming and the hyperacoustic velocity of propagation that obtain, width and height, and calculate the volume and the surface area in this space according to this form parameter, in one embodiment of the invention, suppose that length is 20 meters, width is 15 meters, highly is 3 meters, then volume is 900 cubic metres, and surface area is 810 square metres;
The average sound absorption coefficient that calculates mobile phone place spatial surface according to the energy difference that calculates equals 20;
Volume, surface area and average sound absorption coefficient according to space, mobile phone place utilize the Sabine formula to calculate the reverberation time, reverberation time=0.161 * volume ÷ (surface area * average sound absorption coefficient), reverberation time T=0.161 * 900 ÷ (810 * 20), T=0.00894.
302, determine corresponding spatial model according to form parameter;
Obtain corresponding acoustic device parameter the mapping table according to volume, surface area and the spatial model in 900 cubic metres of the volumes in the space, mobile phone place that goes out to calculate in step 201 and 810 square metres of spaces, sound play device place of in mobile phone, presetting of surface area, as shown in table 3, it is in the room corresponding parameters scope that scope drops on spatial model;
According to spatial model, promptly obtain corresponding spatial model the mapping table of the spatial model that in sound play device, presets of room and dsp optimization algorithm index, from table 4, can draw, the room correspondence be that index is the dsp optimization algorithm of A.
303, the dsp optimization algorithm index according to the spatial model correspondence obtains corresponding dsp optimization algorithm;
In step 202, obtained corresponding dsp optimization algorithm index A according to the spatial model room, draw according to rope A again and obtain corresponding D SP optimized Algorithm the dsp optimization algorithms library that in sound play device, presets.
304, obtain the digital audio and video signals that is about to broadcast;
Obtain the digital audio and video signals that is about to broadcast, concrete:
If talking state is then obtained simulated audio signal earlier, convert this simulated audio signal to digital audio and video signals again;
If the music state then directly obtains digital audio and video signals.
305, to dsp optimization algorithm input correlation parameter, digital audio and video signals is optimized;
To dsp optimization algorithm input length measured, width, height and reverberation time in step 201, the dsp optimization algorithm is optimized digital audio and video signals according to these parameters.
306, output is through the digital audio and video signals after optimizing;
If mobile phone is the music state, the digital audio and video signals after then will optimizing converts simulated audio signal earlier to, plays then, and is more melodious through the music effect of optimizing.
In the present embodiment, by a ultrasonic sensor is installed on mobile phone, measure the length in space, sound play device place by ultrasonic sensor, width, the average sound absorption coefficient of height and space metope, and according to the volume and the surface area of this form parameter computer memory, and then calculate according to this volume, surface area and average sound absorption coefficient calculate the reverberation time, find corresponding spatial model and the dsp optimization algorithm corresponding according to volume and surface area then with this spatial model, utilize the length that calculates again, width, height and reverberation time parameter, utilize corresponding dsp optimization algorithm, digital audio and video signals is optimized, make this digital audio and video signals in front space, obtain best voice playing effect, even the present invention also can reach same effect to the off one's beat user of music, and is convenient for users; Present embodiment is example with the mobile phone, but this programme is applicable to various music equipment and is not limited to mobile phone.
See also Fig. 4 A, Fig. 4 B, a kind of the 4th embodiment of sound play device in the embodiment of the invention, specific as follows:
The 3rd acquisition module 403 is used to obtain the digital audio and video signals that is about to broadcast;
Obtain corresponding spatial model the mapping relations of volume, surface area and the spatial model in the space, sound play device place that the form parameter of obtaining according to first acquisition module 401 presets in sound play device, and obtain the digital signal corresponding optimized Algorithm the digital signal optimized Algorithm storehouse of in sound play device, presetting according to the spatial model that obtains.
As Fig. 4 B, first acquisition module 401 comprises:
Receiving element 401b is used to receive by transmitter unit and sends the ultrasound wave that the back refraction is returned;
Computing unit 401c, be used to calculate hyperacoustic energy difference of ultrasonic waves transmitted and reception and the mistiming between emission ultrasound wave and the reception ultrasound wave, and calculate the average sound absorption coefficient of space, sound play device place metope according to this energy difference, calculate the form parameter in space, sound play device place according to the mistiming, calculate the volume and the surface area in space, sound play device place then according to this form parameter, calculate the reverberation time according to average sound absorption coefficient, volume and surface area again;
The first acquiring unit 402a, the mapping relations that are used for volume, surface area and the spatial model in the space, sound play device place that the volume that obtains according to first acquisition module 401 and surface area preset in the sound play device are obtained corresponding acoustic device parameter;
The 3rd acquiring unit 402c is used for the digital signal optimized Algorithm storehouse that the spatial model that obtains according to second acquisition unit presets in the sound play device and obtains the digital signal corresponding optimized Algorithm;
Sound play device also comprises in the present embodiment:
In the present embodiment, obtain the length in space, sound play device place by first acquisition module, width, the average sound absorption coefficient of height and space metope, and according to the volume and the surface area of this form parameter computer memory, and then calculate according to this volume, surface area and average sound absorption coefficient calculate the reverberation time, find corresponding spatial model and the dsp optimization algorithm corresponding according to volume and surface area then with this spatial model, utilize the length that calculates again, width, height and reverberation time parameter, utilize corresponding dsp optimization algorithm, digital audio and video signals is optimized, make this digital audio and video signals in front space, obtain best voice playing effect, even the present invention also can reach same effect to the off one's beat user of music, and is convenient for users.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: ROM (read-only memory) (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
More than audio control method and sound play device that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. an audio control method is characterized in that, comprising:
Obtain the form parameter in space, sound play device place, and the reverberation time;
Determine the digital signal corresponding optimized Algorithm according to described form parameter;
Obtain the digital audio and video signals that is about to broadcast;
Utilize described digital signal optimized Algorithm to be optimized according to described form parameter and described reverberation time to described digital audio and video signals;
Output is through the digital audio and video signals after optimizing.
2. method according to claim 1 is characterized in that, describedly determines that according to described form parameter the digital signal corresponding optimized Algorithm is specially:
Obtain corresponding spatial model the spatial model that in described sound play device, presets according to described form parameter and the mapping relations of digital signal optimized Algorithm index, and obtain corresponding digital signal optimized Algorithm the digital signal optimized Algorithm storehouse of in described sound play device, presetting according to described spatial model.
3. method according to claim 1 is characterized in that, the described form parameter of obtaining space, sound play device place, and the step of reverberation time is specially:
Receive the ultrasound wave that returns after the ultrasound wave refraction of launching by sound play device and obtain energy difference between the energy that returns after hyperacoustic energy that described ultrasonic sensor launches and the refraction of described ultrasound wave, and described ultrasonic sensor is launched the mistiming between the time that hyperacoustic time returns after reflecting with described ultrasound wave by the ultrasonic sensor that is arranged in the described sound play device;
Obtain the form parameter in space, described sound play device place according to the described mistiming;
Obtain the volume and the surface area in described space according to described form parameter, and obtain the average sound absorption coefficient of space, described sound play device place metope according to described energy difference;
Obtain the reverberation time according to described volume and surface area and described average sound absorption coefficient.
4. method according to claim 2 is characterized in that, the step of obtaining corresponding spatial model in described sound play device the mapping relations of described spatial model that presets according to form parameter and digital signal optimized Algorithm index is specially:
Obtain corresponding acoustic device parameter the mapping relations of volume, surface area and the spatial model in the space, sound play device place of in described sound play device, presetting according to described volume and surface area;
Obtain corresponding spatial model the spatial model that in described sound play device, presets according to described acoustic device parameter and the mapping relations of digital signal optimized Algorithm index.
5. according to each described method of claim 1-4, it is characterized in that the described step of obtaining the digital audio and video signals that is about to broadcast comprises:
Receive simulated audio signal;
Convert described simulated audio signal to digital audio and video signals.
6. method according to claim 5 is characterized in that, described output is specially through the digital audio and video signals after optimizing:
To convert simulated audio signal and output through the digital audio and video signals after optimizing to.
7. a sound play device is characterized in that, comprising:
First acquisition module is used to obtain the form parameter in space, sound play device place, and the reverberation time;
Second acquisition module is used for determining the digital signal corresponding optimized Algorithm according to described form parameter;
The 3rd acquisition module is used to obtain the digital audio and video signals that is about to broadcast;
Optimal module is used for utilizing described digital signal optimized Algorithm to be optimized according to described form parameter and described reverberation time to described digital audio and video signals;
Output module is used to export the digital audio and video signals through after optimizing.
8. device according to claim 7 is characterized in that, described second acquisition module specifically is used for:
Obtain corresponding spatial model the spatial model that in described sound play device, presets according to described form parameter and the mapping relations of digital signal optimized Algorithm index, and obtain corresponding digital signal optimized Algorithm the digital signal optimized Algorithm storehouse of in described sound play device, presetting according to described spatial model.
9. device according to claim 7 is characterized in that, described first acquisition module comprises:
Transmitter unit is used to launch ultrasound wave;
Receiving element is used to receive by transmitter unit and sends the ultrasound wave that the back refraction is returned;
Computing unit, be used to calculate hyperacoustic energy difference of ultrasonic waves transmitted and reception and the mistiming between emission ultrasound wave and the reception ultrasound wave, and calculate the average sound absorption coefficient of space, sound play device place metope according to described energy difference, calculate the form parameter in space, sound play device place according to the described mistiming, calculate the volume and the surface area in described space according to described form parameter, and according to described average sound absorption coefficient and described volume and surface area calculating reverberation time.
10. device according to claim 9 is characterized in that, described second acquisition module comprises:
First acquiring unit, the mapping relations that are used for volume, surface area and the spatial model in the space, sound play device place of presetting in the described sound play device according to described volume and surface area are obtained corresponding acoustic device parameter;
Second acquisition unit is used for the spatial model that presets in the described sound play device according to described acoustic device parameter and the mapping relations of digital signal optimized Algorithm index and obtains corresponding spatial model;
The 3rd acquiring unit is used for obtaining the digital signal corresponding optimized Algorithm according to the digital signal optimized Algorithm storehouse that described spatial model presets in the described sound play device.
11. device according to claim 7 is characterized in that, described the 3rd acquisition module comprises:
Receiving element is used to receive simulated audio signal;
Converting unit is used for converting the simulated audio signal that receiver module receives to digital audio and video signals.
12. device according to claim 11 is characterized in that, described converting unit also is used for converting the digital audio and video signals after optimizing to simulated audio signal;
Described output module specifically is used for the simulated audio signal after the modular converter conversion or the digital audio and video signals output after optimizing.
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| CN110164464A (en) * | 2018-02-12 | 2019-08-23 | 北京三星通信技术研究有限公司 | Audio-frequency processing method and terminal device |
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