Passive tone control with variable inflection frequencies improved. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Tone, volume controls
Comments on the article
As an example of an elegant circuitry solution for a tone control, one can cite a tone block used in various variations in tube electric guitar amplifiers. The "highlight" of this regulator is the change in the frequency response of the frequency response in the process of regulation, which leads to interesting effects in the sound of the "classical" electric guitar. Its basic scheme is shown in the upper figure, and the approximated LACH - in the lower one. The calculated dependences for determining the time constants of the inflection points are also given there.
It is easy to see that adjustment in the region of lower audio frequencies changes the inflection frequencies without changing the slope of the frequency response. When the slider of the variable resistor R4 is in the lower (according to the scheme) position, the frequency response at lower frequencies is linear. When the engine is moved upwards, a rise appears on it, and the inflection point in the process of regulation shifts to the region of lower frequencies. With further movement of the slider, the upper (according to the circuit) section of resistor R4 begins to shunt resistor R2, which causes a shift in the high-frequency inflection point to higher frequencies. Thus, when adjusting, the rise of low frequencies is complemented by the fall of the middle ones. The high-frequency regulator is a simple first-order filter and has no special features.
Author: A. Shikhatov; Publication: bluesmobile.com/shikhman
See other articles Section Tone, volume controls.
Read and write useful comments on this article.
<< Back
Latest news of science and technology, new electronics:
Alcohol content of warm beer
07.05.2024
Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>
Major risk factor for gambling addiction
07.05.2024
Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>
Traffic noise delays the growth of chicks
06.05.2024
The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>
| Random news from the Archive 28nm Embedded Flash for Microcontrollers
23.02.2014
According to Renesas Electronics, its specialists have developed the industry's first embedded flash memory for microcontrollers, designed for production at 28 nm standards.
The use of 28nm technology will increase the amount of built-in flash memory. The need to increase the volume is caused by the complication of tasks solved by microcontrollers, in particular, those operating as part of automotive electronics and controlling the operation of the engine in real time.
Renesas microcontrollers, currently manufactured in 40nm, can have up to 8MB of onboard flash memory. Using the new development, it is possible to create single-chip solutions that include more than 16 MB of flash memory.
The prototype, made by Renesas, runs at 160 MHz (40nm memory runs at 140 MHz), can store information for up to 20 years, and has a lifespan of 250 writes.
An additional benefit from the transition to 28 nm is the reduction in power consumption.
The new memory uses MONOS (Metal Oxide Nitride Oxide Silicon) technology and Renesas proprietary transistor structures.
|
Other interesting news:
▪ Innovative Supplement for Astronauts
▪ Chip IR25750L for current measurement
▪ Miniature Data Acquisition Module Diamond Systems DS-MPE-DAQ0804
▪ Toshiba HK3E2 Solid State Drives
▪ A safe and inexpensive way to launch small satellites
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ site section Lightning protection. Article selection
▪ Article Rendering first aid to persons affected by electric current. Occupational Safety and Health
▪ What integration processes took place in Europe in the second half of the twentieth century? Detailed answer
▪ article Janitor. Standard instruction on labor protection
▪ article Lacquer solutions. Simple recipes and tips
▪ article The magical appearance of scarves. Focus secret
Leave your comment on this article:
All languages of this page
Home page | Library | Articles | Website map | Site Reviews
www.diagram.com.ua
2000-2024
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese