This thread attempts to simplify terms often used but not so well understood. I have gathered this information from various sources to help the community. Please appreciate I am neither an audio engineer or audio expert but enthusiast only. Terms listed are ones I believe to be most relevant in considering audio tactile, including Simvibe and frequencies in general. Also covering some technical aspects of what additional hardware and audio tuning via specialised DSP or audio DAW software may bring. See below also in last post for useful links. Audio Terms Glossary B Balance The relative level of two or more instruments in a mix, or the relative level of audio signals in the channels of a stereo recording. To make the relative levels of audio signals in the channels of a stereo recording even. Balance Control A control on a stereo amplifier that when moved clockwise will make the right channel louder (and the left channel softer) and will do the reverse when moved counter-clockwise. Balanced Having a pleasing amount of low frequencies compared to mid-range frequencies and high frequencies. Having a pleasing mixture of the various instrument levels in an audio recording. Having a fairly equal level in each of the stereo channels. A method of interconnecting electronic gear using three-conductor cables. Balanced input/output A “balanced” connection is one that has three wires to move the signal. One is a ground, and the other two (called conductors) carry signals of equal value. This is why they are called balanced. Low Z cables and connections are the most common example. Bandwidth The range of frequencies over which a tape recorder, amplifier or other audio device is useful. The range of frequencies affected by an equalization setting. C Cancellation A shortening of the term Phase Cancellation (the energy of one waveform significantly decreasing the energy of another waveform because of phase relationships at or close to 180 degrees). Clipping Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure. Crossover A set of filters that “split” the audio signal into two or more bands (two or more signals, each of which have only some of the frequencies present). Crossover Frequency The frequency that is the outer limit of one of the bands of a crossover. Crosstalk Leakage of an audio signal into a channel that it is not intended to be in, from an adjacent or nearby channel. Centre Frequency The frequency of the audio signal that is boosted or attenuated most by an equalizer with a peak equalization curve. Channel A single path that an audio signal travels or can travel through a device from an input to an output. Compression Ratio How many dB the input signal has to rise above the threshold for every one dB more output of a compressor or limiter. Compressor A signal processing device that does not allow as much fluctuation in the level of the signal above a certain adjustable or fixed level. Cut-Off Frequency (Turnover Frequency) The highest or lowest frequency in the pass band of a filter. Cut-off Rate (Slope) The number of dB that a filter reduces the signal for each octave its frequency past the filter’s cut-off frequency (outside of the pass band). Cycle An alternation of a waveform which begins at a point, passes through the zero line, and ends at a point with the same value and moving in the same direction as the starting point. Cycles Per Second A unit used in the measure of frequency, equivalent to Hertz. Cycles Per Second is an outdated term replaced by Hertz in 1948. D Decibel (dB) Relative measurement for the volume (loudness) of sound. Also used to measure the difference between two voltages, or two currents. A numerical expression of the relative loudness of a sound. Distortion Usually undesirable result of overloading sound equipment. Reducing the levels can remedy the situation.