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What are the disadvantages of using dtmf in home automation systems?
Wiki User
∙ 12y ago
it does not have any feed back system
Wiki User
∙ 12y ago
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What are the very simple Digital Electronic projects using 74 series ICs?
1.project using Dtmf decoder 2.using 555 ics
How IC MT8807 works as a dtmf decoder?
I assumed thats what its designed to be. See the datasheet on usage.
What is the use of AT89S52 in DTMF based industrial aplliances control system?
AT89S52 is a microcontroller based on the Intel 8051 architecture and features. Concerning your question, AT89S52 is the heart of most project involving Dual Tone Multi Frequency (DTMF), that is to say it is the controller IC used in such project.
Why two frequencies are used in dtmf?
The tone frequencies, are selected such that harmonics and intermodulation products will not cause an unreliable signal. No frequency is a multiple of another, the difference between any two frequencies does not equal any of the frequencies, and the sum of any two frequencies does not equal any of the frequencies.
What is the full form of ivr?
It's an abbreviation for Interactive Voice Response, sometime refered to as IVRS (Interactive Voice Response System). IVR is like a complex answering machine with more than one pre-recorded announcements and with ability to recognize and respond to DTMF key presses of human voice.IVR DefinitionFrom the link IVR Definition under Related Links below: "Interactive voice response, or IVR, is a computerized phone system that enables a person, typically a telephone caller, to make a selection from a voice menu. The selection is made using touchphone keypad entries or voice responses. This interaction allows the individual to communicate with the phone system and thus the computer system.The phone system plays pre-recorded voice prompts and the person typically presses a number on a telephone keypad to select the option associated with the voice prompt."ExampleA caller dials a telephone number that is answered by an IVR system. The IVR system executes an application which is tied to the number dialed DNIS (Dialed Number Identification Service). As part of the application, prerecorded audio files or dynamically generated Text to Speech (TTS) audio explain the options available to the caller. The caller is given the choice to select options using DTMF tones or spoken words. Speech recognition is normally used to carry out more complex transactions and simplifies the application menu structure.
What is DTMF How DTMF is used What are the advantages of DTMF?
Advantages:1. Effective control of home appliances.2. Home automation using mobile phone.3. Increases power efficiency.4. Increases appliances lifetime.5. Power wastage is reduced.
What are the very simple Digital Electronic projects using 74 series ICs?
1.project using Dtmf decoder 2.using 555 ics
What is the duty of DTMF board in Radio Transceivers?
DTMF board is used to enable or disable options on a repeater or a radio system. They are also used for phone patch (telephonic relay) if the repeater has an interconnect capability. DTMF also serves as an Automatic Number Identification system, or ANI. In handheld and vehicle mounted units the DTMF board can transmit the unit's identifier before or after the unit transmits, or both. This can come in handy for identifying who is talking in larger county 911 systems, or for any system with a large number of units, but can be used regardless of the size of a given system.
Is there such thing as a dtmg report format on alarm systems?
DTMF (Dual Tone Multi Frequency) usually called contact I.D. or SIA format in the alarm industry.
Is Nokia 1680 a dtmf mobile?
yes,any mobile 2day operates on dtmf tech. and sometimes call it as touchtone tech.,.
What is DTMF?
DTMF means Dual Tone Multi Frequency this is every key on your phone key pad, each key generates two tones over top of each other hence the Dual Tone of DTMF. This also applied to touch tone telephones that are hardwired in homes and businesses, they also use DTMF keying.
What is basic principle of mobile controlled robot?
basic operation of mobile controlled lies with the functioning of DTMF and L293D driver ic. one mobile phone is used to send DTMF tones to Rx mobile phone and DTMF decoder ic is used to decode the dtmf tones and it sends information to to micro controller which produces response according to program and gives control to l293d driver ic.
How do you deactivate dtmf in nokia 5800 phones?
not possible !
How does dtmf technology overcomes gsm technology?
mujhe nhi pta
How IC MT8807 works as a dtmf decoder?
I assumed thats what its designed to be. See the datasheet on usage.
What is the use of AT89S52 in DTMF based industrial aplliances control system?
AT89S52 is a microcontroller based on the Intel 8051 architecture and features. Concerning your question, AT89S52 is the heart of most project involving Dual Tone Multi Frequency (DTMF), that is to say it is the controller IC used in such project.
What types of telephone supervisory signaling do you use in a voice network?
DTMF - DUAL TONE MULTI FREQUENCY signalling
