CN101018261B - A method for controlling the conference call mode using the DSP conference chip - Google Patents
A method for controlling the conference call mode using the DSP conference chip Download PDFInfo
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- CN101018261B CN101018261B CN200610089647A CN200610089647A CN101018261B CN 101018261 B CN101018261 B CN 101018261B CN 200610089647 A CN200610089647 A CN 200610089647A CN 200610089647 A CN200610089647 A CN 200610089647A CN 101018261 B CN101018261 B CN 101018261B
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Abstract
The disclosed dialogue control method based on a DSP conference processing chip comprises: initiating the conference way data and broadcast way data; stacking all data of user on conference/ broadcast way as the conference/broadcast way data for output; linking conference-way data to the broadcast-way user and user output; stacking all of conference-way user input and broadcast-way user input as the broadcast-way data to output and connect with the k conference-way user outputs. This invention calls API interface on the DSP chip for precise control with low cost and wide applicability, and saves time on secondary development.
Description
Technical field
The present invention relates to the method that a kind of DSP of utilization meeting chip realizes that the conference call mode is controlled, belong to field of computer technology.
Background technology
The realization of black phone meeting mainly is a MPTY function of utilizing enterprises switch (PBX), but significant limitation is arranged, show that mainly people with a part in a conference's number is limited, general switch can not surpass 8 sides, and complex operation in use has a lot of inconvenience.In the quite a long time, relating to when handling meeting, top-priority is to be the special-purpose meeting chip of representative with the MT8924 of Mitel company and the M34116 of ST company., along with development of electronic technology, these chips can not satisfy complicated day by day conference call demand.
Based on the limitation of black phone conference system, the TMS320C54X chip of the company of employing TI more than showing is realized the MPTY function in the conventional switch.With DSP (Digital Signal Processing) meeting process chip is that the meeting processing mode of representative becomes main flow gradually.
Existing meeting process chip can be divided into two classes:
1) be the special-purpose meeting chip of representative with the MT8924 of Mitel company and the M34116 of ST company etc.
2) imitative special-purpose meeting chip functions interface and the DSP meeting process chip developed.
Wherein, because the DSP development of technology, adopt general dsp to realize conference telephone, advantage such as it is big to have a capacity, and cost is low, and it is flexible to upgrade becomes preferred option gradually., though the meeting process chip has changed DSP into by special chips such as MT8924 or M34116, can the correlation function interface that provides does not change.In the face of complicated day by day meeting demand, particularly to the accurate control of each conference member talking mode, the DSP meeting of developing on traditional meeting process chip thinking and coming is handled and is just seemed that some is unable to do what one wishes, need carry out secondary development on the conferencing function interface that DSP provides toward contact.So, just be faced with the input of cost and time, also reach the system's hidden danger that therefore may bring.
And, when the accurate control that relates to each conference member talking mode, more than two kinds of chips all be faced with the problem of a secondary development jointly, thereby increased time and human cost.
Summary of the invention
The object of the present invention is to provide a kind of DSP of utilization meeting process chip to realize the method that the conference call mode is controlled.This method does not need secondary development, directly calls the api interface (API) that DSP meeting process chip provides, and just can realize each conference member talking mode is accurately controlled.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme:
A kind of DSP of utilization meeting process chip realizes the method that the conference call mode is controlled, and described conference call mode comprises conferencing, logical broadcast mode and broadcast mode, and the method that described conference call mode is controlled may further comprise the steps:
Step 1: conferencing data and logical broadcast mode data are carried out initialization;
Step 2: judged whether next meeting time slot, if next meeting time slot is arranged, be in conferencing user's data input and stack up a plurality of so, export as the conferencing data, be in logical broadcast mode user's data input and stack up a plurality of, export as logical broadcast mode data; Repeat this step and be in until all that conferencing user's data input all is applied and all logical broadcast mode user's data inputs all are applied;
Step 3: meeting mode data are connected in m logical broadcast mode user, a n broadcast mode user's the output; Then, k conferencing user's input and m logical broadcast mode user's input is stacked up together, as logical broadcast mode data output;
Step 4: the logical broadcast mode data of output in the step 3 are connected in k conferencing user's the output.
Wherein, the method controlled of described realization conference call mode is that DARAM by direct visit DSP inside realizes.
Wherein, the described direct DARAM that visits DSP inside may further comprise the steps:
Steps A is set the inner DARAM address that receives the conferencing parameter of DSP
Step B directly visits the DARAM of DSP inside according to the DARAM address of conferencing parameter in the steps A.
The method that described realization conference call mode is controlled is carrying out carrying out after the processing such as noise suppression and gain controlling to described data input.
The DSP of utilization meeting process chip provided by the present invention realizes the method that the conference call mode is controlled, and directly calls the api interface that DSP meeting process chip provides, and with realization each conference member talking mode is accurately controlled.Can be applied to various environment, cost is low, has saved the secondary development time.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the principle schematic of the DSP meeting process chip used among the present invention.
Fig. 2 realizes the method flow diagram of conference call for the present invention.
The method flow diagram that Fig. 3 controls the conference call mode for the present invention's realization.
Embodiment
Below in conjunction with accompanying drawing, be example with the dsp chip TMS320VC5402 of TI company, specify the present invention and utilize DSP meeting process chip to realize the method for conference call control.Be appreciated that the present invention is not limited to this chip, when using method provided by the present invention, can select any a processor or programming device.
With reference to figure 1, DSP meeting process chip used in the present invention (TMS320VC5402) comprises a host interface, i.e. HPI interface among Fig. 1 and two serial ports, i.e. serial ports among Fig. 10 and serial ports 1.
HPI is one 8 parallel-by-bit mouth.The HPI mouth links to each other with the CPU of DSP meeting process chip place veneer.CPU directly visits the memory space DARAM of DSP inside by this interface, supports the high speed data transfer between CPU and the DSP meeting process chip, controls foundation, release and gain setting, the noise suppression of meeting with this.
The serial ports of DSP meeting process chip is a high-speed bidirectional multichannel band buffered serial port, can with communications such as other serial ports device, encoder.The serial ports of DSP meeting process chip links to each other with program-controlled switching network, and each serial ports all has 32 time slots, and each time slot can enter meeting.Each serial ports has 128 passages, can be configured by memory.As shown in Figure 1, each serial ports comprises frame synchronization, clock, inlet highway and output bus.
FLASH can provide the transceive data buffering area of program running space and serial ports easily on the sheet.The personal code work that FLASH internal storage DSP meeting process chip will be moved.
The present invention utilizes DSP meeting process chip to realize the method for conference call control, only passes through directly to call the API that DSP meeting process chip provides, and just can realize each conference member talking mode is accurately controlled.Below the method is elaborated:
The following stated " conference call mode " is meant that to a certain user in same meeting, other user voice that certain user can hear and other user can hear the general status of this user voice.
The following stated " conferencing " is meant that to a certain user in same meeting, all other users can both hear this user's sound, and this user can hear all other can tell the user of sound in meeting.
The following stated " logical broadcast mode " is meant that to a certain user in same meeting, all other users that are in conferencing can both hear this user's sound, and this user can only hear the user's who is in conferencing sound.
The following stated " broadcast mode " is meant that to a certain user in same meeting, all other users can't hear this user's sound, but this user can hear the user's who is in conferencing sound.
Below with reference to Fig. 2 and Fig. 3 the DSP of utilization meeting process chip of the present invention is realized the method that the conference call mode is controlled.
As shown in Figure 2, behind the system initialization, at first detect DSP and whether receive data by the HPI interface.If the data of writing are then taken out data from the data buffer zone, carry out conventional treatment such as noise suppression and gain controlling then.Next, carrying out the conference call mode again controls.Carry out other conventional treatment at last.If the HPI interface does not write data or does not receive the data of a frame, then directly carry out other conventional treatment, for example, return and continue to wait for.Repeat above-mentioned steps and all finish processing up to each passage of each serial ports.
So-called Multi-Party Conference function realizes by a plurality of input speech channels are added to one to export on the speech channel.Therefore, whether each output channel can be controlled corresponding 32 input channels with two words (32 bit) and will be added on this passage, 1 expression stack (promptly participating in a conference), 0 expression do not superpose (promptly not participating in a conference).If superimposed speech channel more for a long time, DSP also can select the transmission of volume maximum.So the user both can hear all participants' speech, also can select to hear the speech greatest member, convenient flexible again.The Data Source of Multi-Party Conference is multichannel serial 0 and the serial ports 1 of DSP.When each data arrive, will produce interruption, CPU is saved in buffering area from the serial ports sense data then.When receiving frame data, main program can be handled these frame data automatically.According to the pairing timeslot number of the member who comprises in the Multi-Party Conference, the speech data that is comprised in the meeting is extracted.Data after handling are inserted in the transmission data buffer zone.
The transmission of speech data is adopted and is received identical method.Ready data are put into data at every turn and send buffering area, every generation once receives interruption, just takes out ready data and transmission from buffering area, and the data of finishing the PCM voice link send.
Carry out as shown in Figure 3, when time slot superposes, time slot being divided into three parts: conferencing, logical broadcast mode, broadcast mode in the step that the conference call mode controls.Particularly, suppose that a meeting has k user to be in conferencing, have m user to be in logical broadcast mode, have n user to be in broadcast mode, wherein, k, m, n are positive integer.At first, conferencing data tsout1 and logical broadcast mode data tsout2 are carried out initialization.Then, judged whether next meeting time slot.If next meeting time slot is arranged, be in the input of conferencing user's data to k so and stack up, as tsout1 output, m logical broadcast mode user's data input stacked up, export as tsout2; And tsout1 is connected in m logical broadcast mode user, a n broadcast mode user's the output; Then, k conferencing user's input and m logical broadcast mode user's input is stacked up together, promptly tsout2=tsout1+tsout2 as output tsout2, and is connected to tsout2 in k conferencing user's the output.
The present invention is to the control of conference call mode, is that the DARAM by direct visit DSP inside carries out.Shown in following code:
#define HPI_mode 0xXXXX//XXXX is the inner DARAM address that receives the conferencing parameter of DSP
//unsigned char meet_num meeting number
//unsigned char meet_mode conferencing
The control of //unsigned char meet_noise meeting noise
//unsigned char meet_ingain meeting input gain
//unsigned char meet_outgain meeting output gain
void?DSP_join_meet(unsigned?char?meet_num，unsigned?charmeet_mode，unsigned?char?meet_noise，unsigned?char?meet_ingain，unsigned?char?meet_outgain)
{
// ... ... other processing
Outp (HPI_mode, meet_mode); // directly visit the DARAM of DSP inside, control the conference call mode with this
// ... ... other processing
}
Be example only below, specify the present invention and utilize DSP meeting process chip to realize the method that the conference call mode is controlled with the dsp chip TMS320VC5402 of TI company.The present invention directly calls the api interface that DSP meeting process chip provides, and with realization each conference member talking mode is accurately controlled.Can be applied to various environment, cost is low, has saved the secondary development time.
Claims (4)
1. one kind is utilized DSP meeting process chip to realize the method that the conference call mode is controlled, described conference call mode comprises conferencing, logical broadcast mode and broadcast mode, wherein conferencing is meant a certain user, all other users can both hear this user's sound in same meeting, and this user can hear all other can tell the user of sound in meeting; Logical broadcast mode is meant that to a certain user all other users that are in conferencing can both hear this user's sound in same meeting, and this user can only hear the user's who is in conferencing sound; Broadcast mode is meant that to a certain user all other users can't hear this user's sound in same meeting, but this user can hear the user's who is in conferencing sound, it is characterized in that may further comprise the steps:
Step 1: conferencing data and logical broadcast mode data are carried out initialization;
Step 2: judged whether next meeting time slot, if next meeting time slot is arranged, be in conferencing user's data input and stack up a plurality of so, export as the conferencing data, be in logical broadcast mode user's data input and stack up a plurality of, export as logical broadcast mode data; Repeat this step and be in until all that conferencing user's data input all is applied and all logical broadcast mode user's data inputs all are applied;
Step 3: meeting mode data are connected in m logical broadcast mode user, the n broadcast mode user's data output; Then, k conferencing user's data input and m logical broadcast mode user's data input are stacked up together, as logical broadcast mode data output, wherein k, m, n are positive integer;
Step 4: the logical broadcast mode data of output in the step 3 are connected in k the conferencing user's data output.
2. the method that realization conference call mode as claimed in claim 1 is controlled is characterized in that:
Described method is that the DARAM by direct visit DSP inside realizes.
3. the method that realization conference call mode as claimed in claim 2 is controlled is characterized in that:
The DARAM of described direct visit DSP inside may further comprise the steps:
Steps A: set the inner DARAM address that receives the conferencing parameter of DSP
Step B: the DARAM that directly visits DSP inside according to the DARAM address of conferencing parameter in the steps A.
4. the method that realization conference call mode as claimed in claim 1 is controlled is characterized in that:
Described method is carried out after noise suppression and gain controlling are carried out in described data input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610089647A CN101018261B (en) | 2006-07-07 | 2006-07-07 | A method for controlling the conference call mode using the DSP conference chip |
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| CN200610089647A CN101018261B (en) | 2006-07-07 | 2006-07-07 | A method for controlling the conference call mode using the DSP conference chip |
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| CN101018261B true CN101018261B (en) | 2010-05-26 |
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| CN101175116B (en) * | 2007-10-29 | 2011-01-12 | 北京佳讯飞鸿电气股份有限公司 | Method for implementing wider band gain of audio signal by conference telephone circuit |
| CN108924372B (en) * | 2018-06-29 | 2020-12-01 | 深圳市天聆通科技有限公司 | Multi-dimensional recording method for telephone dispatching center |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169078A (en) * | 1996-03-29 | 1997-12-31 | 三菱电机株式会社 | Method and arrangement for affording conference facility |
| CN1392717A (en) * | 2001-06-14 | 2003-01-22 | 英保达股份有限公司 | Multichannel voice meeting device and method |
| CN1697472A (en) * | 2004-05-14 | 2005-11-16 | 华为技术有限公司 | Method and device for switching speeches |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169078A (en) * | 1996-03-29 | 1997-12-31 | 三菱电机株式会社 | Method and arrangement for affording conference facility |
| CN1392717A (en) * | 2001-06-14 | 2003-01-22 | 英保达股份有限公司 | Multichannel voice meeting device and method |
| CN1697472A (en) * | 2004-05-14 | 2005-11-16 | 华为技术有限公司 | Method and device for switching speeches |
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