What do you mean by frequency response in audio?
Frequency Response describes the range of frequencies or musical tones a component can reproduce. Frequency response measures if and how well a particular audio component reproduces all of these audible frequencies and if it makes any changes to the signal on the way through.
What do you mean by flat frequency response?
This is often called a “flat” frequency response, where a fixed volume sine wave (measured in decibels) can be swept through the system and will be the same amplitude at all frequencies at the output. Frequency response can often be thought of much like a filter, which can boost or attenuate the input signal to alter the sound.
Why is it important to have a good frequency response?
An octave higher is 524Hz; an octave lower is 131Hz. Why Frequency Response is important: An audio device with good frequency response is able to play all the low, middle, and high tones correctly—and in the proper proportion to each other—and that’s what tells our ears whether or not this is a high-fidelity unit with rich, vibrant sound.
How is the loudness of a sound measured?
To help you understand frequency response, remember this: the loudness of sound is expressed in a unit of measure called the decibel, or dB (the “B” is capitalized in recognition of Alexander Graham Bell and his work in acoustics. No kidding.).
Where did dual tone multi frequency signaling originate?
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. DTMF was first developed in the Bell System in the United States,…
Which is an example of a strong RF tone?
As an example, for return-to-zero (RZ) data, its strong RF clock tone can be used as a monitoring signal. Unfortunately, as shown in Equation (4.3), CD will also affect the power in the RF tone, since dispersion causes a relative time delay between the upper- and lower-frequency optical clocks.
Why are DTMF frequencies different from MF frequencies?
In order to prevent consumer telephones from interfering with the MF-based routing and switching between telephone switching centers, DTMF frequencies differ from all of the pre-existing MF signaling protocols between switching centers: MF/R1, R2, CCS4, CCS5, and others that were later replaced by SS7 digital signaling.