Automatic Loudness Control Circuit Schematic Based On The TL072 IC

The following circuit shows about Automatic Loudness Control Circuit Schematic. This circuit based on the TL072 IC. Features: different .....

Bass And Treble Controller Circuit Based On The Classic Baxandall Tone Control Circuitry

The following circuit shows about Bass And Treble Controller Circuit. This circuit built based on the classic Baxandall tone control circuitry .....

Bass Treble Loudness Tone Control Witha LM1036

LM1036 is a DC controlled tone (bass/treble), volume and balance circuit for stereo applications in car radio, TV and audio systems.....

Preamp Mixer Stomp-Box for Dobro Guitar

I designed and built this stomp-box forGrammy-winning resophonic guitar player Stacy Phillips. Stacy typically uses two transducers on his Dobro-style instrumen...

Changes to the MXMs Audio Signal Path

As shown by the block diagrams in Figure 1, overall signal flow in this five-input mixer was minimally changed upon modification, but I added solid-state buffer...

5 LED VU meter circuit diagram using KA2284

This is a simple circuit diagram of 5-LED audio VU meter using IC KA2284/KA2285. The KA2284, KA2285 are monolithic integrated circuit. It is a logarithmic displ...

LED Sound level display circuit by using IC LM3915

This is a simple audio sound level LED display circuit diagram. The circuit is completely based on a single ic LM3915 from National Semiconductor. The LM3915 is...

Bass and Treble Controller- Audio Equalizer Circuit

An audio equalizer circuit is used to adjust the frequency response of an audio signal. This is a simple equalizer circuit for controlling the bass and treble (...

Whistle to beep circuit

This simple circuit produces a beeping sound that lasts for around 3 seconds whenever you make a whistle. The CMOS Hex inverter CD4049 is the heart of this circ...

Voice recorder/playback circuit

This circuit is designed in response to a request made by Mr Vignesh. What he requested was a circuit for recording and playing voice. I think this circuit is e...

Voice modulator circuit

This is a very versatile voice modulator circuit using IC HT8950A from Holtek Semiconductors. The IC is capable of creating 7 upward or downward steps on the fr...

USB sound card

Designing and building a USB sound card is no longer a head ache because we have got the PCM 2702 integrated circuit from Texas Instruments. The PCM2702 is an i...

Tone Generator Circuits

Multi Tone Alarm Description This is a simple and easy to build multi tone alarm circuit that can be used in burglar alarms or sirens. The circuit is based on d...

Subwoofer filter

Here is the circuit diagram of an opamp based subwoofer filter. Audio frequencies below 200Hz are considered to be in the subwoofer range. So a subwoofer filter...

Stereo VU meter - 2 channel audio level meter

Stereo VU meter / 2 channel audio level meter using IC TA7666P. Volume level of each channel is displayed using 5 LEDs .This loudness meter uses minimum number ...

Stereo preamplifier with tone control

Here is the circuit diagram of an excellent stereo preamplifier with tone control using the IC TDA1524 from Phillips. The IC requires very few external componen...

Stereo decoder circuit using MC1310P

Simple FM stereo decoder circuit using MC1310P IC. 12V operation, 40dB channel seperation. Suitable for stereo FM receivers.....

Stereo balance indicator

This is one of the simplest stereo balance indicator circuit that you can have. The circuit will give a visual indication (using two LEDs) proportional to the d...

Speech amplifier circuit

This circuit given here can be housed in the box containing the speaker to form a handy microphone amplifier. The device can be used by teachers, guides, lectur...

Speaker to microphone converter circuit

This circuit is a simple approach for converting a loud speaker into a microphone. When the sound waves fall on the diaphragm of a speaker, there will be fluctu...