Waa-waa circuit

  

Rating: 0.00 / 5 
Inside:
Musical & Effects Circuits / Audio Circuits
The waa-waa effect is achieved as certain frequencies are amplified more than others. A phase shift RC oscillator makes up the basic circuit. Negative feedback is obtained by feeding part of the signal back to the base. When adjusting initially, RV1 is turned to minimum. RV2 is adjusted to a point at which an audible whistle appears indicating oscillation. RV1 is then adjusted till the oscillation just disappears.
Waa-waa circuit  - schematic

It should be possible to set RV2 to any value without any oscillation, this should also be achieved with the minimum possible value of RV1.

News


  • The Nation
    The Nation To allow you to enjoy excellent acoustics in a small space without troublesome adjustments, the CAS-1 system comes with accessories especially designed to avoid interference and deliver high-resolution in the near field - defined
     29 April 2016
  • Stereophile Magazine
    Stereophile Magazine NuWave DSD D/A processor"Why do we have ?" Nancy Kanwisher, one of the scientists behind the research, asked in an interview with Angier. Is our "sensitivity to . . . tunable with experience? These are the really co
     28 April 2016
  • The Verge
    The Verge I really like those basic functions on the Triby. Sometimes it's just easier to hit a button for the radio station you want than trying to wrangle Alexa into giving you exactly what you want to hear. And it's also nicer than Amazon
     28 April 2016
  • The Verge
    The Verge And reviewers like me covered their evolution assiduously. It was exciting. But equally exciting were the struggles to invent things we take for granted today — consumer digital cameras, portable digital players, pocket-size
     27 April 2016
  • The Straits Times
    The Straits Times Just plug this USB sound card into a USB port of your PC, connect a pair of earphones to the G1 and enjoy high-resolution 24-bit/96kHz 7.1 . Designed with gamers in mind, it comes with 17 pre-set game profiles to deliver an
     26 April 2016
  • Backchannel (registration)
    Backchannel (registration) I've spent six weeks with the Echo, a 360-degree speaker in the shape of a small black column, equipped with an array of seven microphones that detect your voice with an almost spooky accuracy, even from across the
     25 April 2016
  • The Verge
    The Verge eakerThat's why we are launching Breaker, because tracking all the strange new things happening in day-to-day is going to be a blast. We don't have to wait for the slick and integrated Next Big Thing, we get to watch it get b
     25 April 2016
  • Hollywood Reporter
    Hollywood Reporter Mourners scouring the internet to find classic Prince albums such as Purple Rain, Around the World in a Day and Sign o' the Times will find the task almost impossible. Many of the top streaming venues like Spotify and Rhaps
     21 April 2016
  • TechHive
    TechHive player is loaded with featuresPioneer is destined to make a splash with its first high-resolution digital (DAP), the XDP-100R ($699 and available at Amazon). While it wasn't the sweetest sounding player in our roundup, its slic
     20 April 2016

.


Leave Comment

characters left: