range of the device is also increased.
Phase distortion
The abbreviation of frequency and phase distortion is an important aspect of the linear distortion of the audio system. Because the phase shifting of audio signals of different frequencies is different when they pass through the circuits of resistance and impedance, as well as the time sequence in which the speaker emits sound at different frequencies
value range between 32768 to 32767, if you get an already encoded media stream, such as g.711 encoding, then need to decode first), do the following calculation:When the above calculation is complete, we can get the energy value p of the frequency F reflected in these n samples:DTMF RecognitionThe above is the whole idea of Goertzel algorithm. If we want to use it for DTMF recognition, we still need to do some work. DTMF recognition, we need to according to a given time of sampling, to maximize
. Theshortest expected delay of SED . In fact, SED is similar to WLC, except that the number of inactive connections is not considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the
fact, SED is similar to WLC, except that the number of inactive connections is not considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer dire
the number of inactive connections is not considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without
considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without the SED calculation.9,LBLC based on the l
them:First, the advantages of LVS:1, strong anti-load ability, because the LVS work mode logic is very simple, and work in the Network 4 layer only to do the request for distribution, no traffic, so in the efficiency of the basic need not too much consideration. In my hand, the LVS, just once the problem: in the concurrency of the highest period of time the equalizer packet loss, according to the analysis of network problems, that is, Nic or linux2.4
Comparison of load balance between LVS, Haproxy and NginxFrom the performance and stability of the most bull LVs, basically reached the F5 hardware equipment 60% performance, a few other 10% are a bit difficult. But because of the LVS bull, configuration is the most troublesome, and health testing needs to be configured Ldirector, other haproxy and nginx themselves, and the configuration super simple.If the site visits are not portal level with haproxy or nginx OK, to the portal level in the use
your knowledge and level of technology.Here's a look at both of them:First, the advantages of LVS:1, strong anti-load ability, because the LVS work mode logic is very simple, and work in the Network 4 layer only to do the request for distribution, no traffic, so in the efficiency of the basic need not too much consideration. In my hand, the LVS, just once the problem: in the concurrency of the highest period of time the equalizer packet loss, accordi
them:First, the advantages of LVS:1, strong anti-load ability, because the LVS work mode logic is very simple, and work in the Network 4 layer only to do the request for distribution, no traffic, so in the efficiency of the basic need not too much consideration. In my hand, the LVS, just once the problem: in the concurrency of the highest period of time the equalizer packet loss, according to the analysis of network problems, that is, Nic or linux2.4
considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without the SED calculation.9,LBLC based on the l
delay of SED . In fact, SED is similar to WLC, except that the number of inactive connections is not considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equ
, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without the SED calculation.9, LBLC based on the least local connection. Based on the destination IP address of the request, the equalizer finds the server that the IP address was recently used, and forwards the request, if the server is overloaded, the least number of connection algorithms are used.10, L
and vertical radiation angle at different frequencies is more helpful for system design. The "different frequencies" mentioned above is a key factor, because the directionality of any speaker or speaker system always changes with different frequencies. Next we will help you understand the changes in the direction at different
. The client program is not affected by the server cluster and requires no modification. The scalability of the system is achieved by transparently joining or deleting a node in the server cluster, by detecting node or service process failures and correctly resetting the system to high availability.The abstract architecture of LVS is divided into three tiers: Load Scheduler (Payload balancer), server pool, shared storage (GKFX storage)650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/7B
considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without the SED calculation.9,LBLC based on the l
considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without the SED calculation.9,LBLC based on the l
, except that the number of inactive connections is not considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request t
, except that the number of inactive connections is not considered. The algorithm is: (the number of active connections +1) *256÷ weight, the same calculated value of the small server priority is selected.8,NQ never queue . Improved SED algorithm. We think about the situation in order to "never queue", that is, the number of connections to the server is 0, then if there is a server connection number of 0, the equalizer directly forwarded the request t
, then if there is a server connection number of 0, the equalizer directly forwarded the request to it, without the SED calculation.9, LBLC based on the least local connection. Based on the destination IP address of the request, the equalizer finds the server that the IP address was recently used, and forwards the request, if the server is overloaded, the least number of connection algorithms are used.10, L
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