Ads
related to: dual tone multiple frequency speakers reviews- Home Speakers
From Bookshelf Speakers to Floor
Standing Towers, Shop Great Sound
- Headphones
Enjoy Private Listening with a Wide
Selection of Models and Styles
- Wireless Audio
Wireless Solutions from Portable
Speakers to Whole House Audio
- GPS Navigation
Get GPS for Your Car, Truck, Boat,
Motorcycle, or Fitness Activities
- Home Speakers
ebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
Dual-tone multi-frequency signaling (DTMF) is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers. [1]
Multifrequency signaling is a technological precursor of dual-tone multi-frequency signaling (DTMF, Touch-Tone), which uses the same fundamental principle, but was used primarily for signaling address information and control signals from a user's telephone to the wire-center's Class-5 switch. DTMF uses a total of eight frequencies.
Simply by adding it to the beginning of another word would normally dictate the word is short for "Multiple". In this case to say DTMF stands for Dual Tone Multiple Frequency would be redundant. Dual Tone is a Multiple Frequency. What the "Multi" in this case means is "Multiplex". Mean the "Mixing" of the Dual Frequencies into one sound wave.
A full range driver may have reduced output at both ends of its frequency range, or a more severely limited frequency response, resulting in a more compromised sound. Partisans of full-range loudspeakers claim superior phase coherence, while some critics describe them as midrange speakers working at or beyond their limits.
A spectrum analyser – typically used as the measuring instrument in two-tone testing. Two-tone testing is a means of testing electronic components and systems, particularly radio systems, for intermodulation distortion. It consists of simultaneously injecting two sinusoidal signals of different frequencies (tones) into the component or system.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Dual_tone_multi-frequency&oldid=1214073029"
Ads
related to: dual tone multiple frequency speakers reviewsebay.com has been visited by 1M+ users in the past month