Talking Elevator is a simple, low-cost and easy to install voice message solution for elevators. It can be set up and installed in minutes without the cost of modifications to elevator’s electrical systems and cabling. With very low power demands the system can work from batteries for about 1 to 3 months (depends on [...]
The Motorola Signal Booster enhances analog and digital picture quality, improves cable modem communication, and reduces lost data. It’s fast and effortless way to make your signal strength up to 32 times more powerful. You can install it easily without need any tools. This device allows you to optimize multiple broadband devices in your [...]
The dsPIC33FJ64GP206-based Ultimate Tremolo is a DSP-based guitar effect pedal that gives the user complete control of every parameter of the tremolo (or amplitude modulation) audio processing effect. This is accomplished by interfacing the pedal to a PC via a Microchip PIC18F4455 USB-enabled microcontroller and editing the settings through software rather than the normal [...]
The PSK31 (Phase Shift Keying, 31 Baud) Adapter is a hardware interface between a PC running a digital communications program, such as DigiPan, and an Amateur Radio transceiver. The electronically adjustable PSK31 interface is controlled by microcontroller AVR ATmega8. It provides automated adjustment and optimization of the audio levels that are carried between the PC [...]
Low-Frequency Oscillation (LFO) is an audio signal usually below 20 Hz which creates a pulsating rhythm rather than an audible tone. LFO predominantly refers to an audio technique specifically used in the production of electronic music. Ray Wilson designed nice Voltage Controlled LFO (+/-12V to +/-15V) for your modulation needs.
The project used interesting approach for reducing speaker distortion and increasing bass response. A dual coil speaker driver is used but only one of the coils is connected to the power amplifier – the other is used for electromotive feedback. This method is not new, but is difficult to implement in pure analogue world because [...]
Spectrum analyzers are employed in most of the modern signal processing systems for measuring the distribution of signal energy in frequency. An audio spectrum analyzer is used for measurements in the audible frequency spectrum (from 0 to 20000 Hz) and can be a very powerful tool for keeping a studio well tuned. A Digital, real-time [...]
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