This circuit, to add the ambience effect, was suggested by National Semiconductor in documentation from the 90s. The amplifier needs an appropriate power source.
This circuit is from an Argentine publication from 1973. It provides a signal to an amplifier from...
This filter was obtained from the Texas Instruments Linear Circuits Applications. It makes use of...
We found this circuit in a 1997 documentation. It can be used in any common 12 V source and has...