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Audio Oscillators - Engineering Projects
https://bestengineeringprojects.com/audio-oscillators/#:~:text=For%20generating%20different%20audio%20frequencies%2C%20variable%20air%20capacitors,vary%20the%20frequency%20in%20the%20range%20of%2010%3A1.
Frequency Shifter - SoundBridge
https://soundbridge.io/frequency-shifter/
Frequency Shifter is a device which raises or lowers the frequency of an input signal. It does this using a complex amplitude modulation like technique. Unlike the pitch shifter, the frequency shifter does not preserve the harmonic relationships between the various tones and harmonics in the input signal. Because of this, sounds processed by a frequency shifter …
Sound shifter circuit - 2000+ Electronic Circuits ...
https://www.circuitstoday.com/sound-shifter-circuit
Description. H ere is superb sound shifter circuit that can be used to add effects to the input sound signal.The circuit is ideal for incorporating in toys and adds great fun.The circuit can be also used in mixers and recorders. The circuit is based on IC HT 8950 from Holtek. The IC HT8905 is a single chip CMOS sound modulator IC which produces seven steps of shift …
Frequency Independent Phase Shifter - Circuit Cellar
https://circuitcellar.com/research-design-hub/frequency-independent-phase-shifter/
This article presents the implementation of a frequency independent phase shifter using basic building blocks of analog circuits, such as op amps, JFETs and passive devices. As mentioned earlier, traditional phase shifters are designed using an all pass filter, with a phase shift varying from 0 degrees to 180 degrees for a given frequency.
Frequency Shifter // Audio Effect - YouTube
https://www.youtube.com/watch?v=WFZWfEB39R8
Frequency Shifter! Learn how the the frequency shifter works and how it differs from Pitch Shifting, Transposition or Ring Modulation. In this tutorial I exp...
Ryan Williams - Frequency Shifter
http://www.sdiy.org/destrukto/freq_shifter.html
This project is a single channel frequency shifter inspired by Jürgen Haible's design(1and 2). This circuit is basically a single sideband modulator thatoperates in the audio range. It will allow up and down shift at thesame time with the ability to shift into negative frequencies. Themultiplier circuit is based on JH's design (somewhat different now) andthe DomeFilter is an exact copy …
Audio Effects - Phase Shifter - Anadigm
https://www.anadigm.com/_kits/kit3/Effects%20-%20Phaser.pdf
simple audio phase shifter using Anadigm®’s AN221E04 FPAA device. The circuit is accompanied by a software controller which performs the frequency sweep of the phaser. The implementation included in this kit uses algorithmic programming of the phaser elements, and runs on a Windows platform. Alternative methods can be used, targeting other
Audio Frequency Generator Circuit - ElectroSchematics.com
https://www.electroschematics.com/audio-frequency-generator/
This audio frequency generator is a triggered signal generator. When a positive pulse of about 6 volts (minimum) is fed to the circuits input , a modulated audio signal comes out of the output. The signal pattern is similar to a bird’s chirp. The pulse width of the trigger signal must be a minimum of 2.5 miliseconds.
HiFi Audio Circuit Design - Texas Instruments
https://www.ti.com/lit/pdf/sboa237
Because the frequency of audio signal is lower than 20 kHz, 100-dB isolation between left and right channel is high enough and can easily be achieved by proper PCB layout and power supply decoupling. 2.7 High Stereo Balance The sound field will shift to the larger volume if the volume of the left and right channels is not same. This
CONTROLLING PHASE SHIFT DIGITALLY A simple phase shift ...
https://pdfserv.maximintegrated.com/en/an/AN184.pdf
The phase shift this circuit realizes at any given frequency can be found by where w is the frequencies in rad/s, or 2*pi*f, when f is in Hertz. As a practical matter, most circuits of this type can comfortably cover a phase range of about 120 degrees with real op amps and components. This allpass filter circuit swaps the location of R1 and C1. Figure 2
Audio Designs With Opamps
https://sound-au.com/dwopa.htm
The value of C1 and R2 determine the frequency at which there is a 90° (or 270°) shift, and the frequency is determined with the formula ... fo = 1 / ( 2π × R2 × C1 ) ... where fo is the 90° phase shift frequency A quick analysis will show how this works.
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