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Glossary – Q


In a bandpass equalizer, the ratio of center frequency to bandwidth.
A measure of the sharpness of resonance.
System of recording and reproduction using four channels and four loudspeakers in an attempt to recreate a 360 degrees sound field around the listener.
A process in which the range of values of a wave is divided into a finite number of smaller sub-ranges, each of which is represented by an assigned or "quantized" value within the sub-range.


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Customer Testimonials
"Thank you again for a super job and for your kindness in giving me so much help. I just called and ordered 6 more copies. I had ordered the originals for my grandchildren, but figured I had better get copes for my children also and 2 friends. The gentleman that helped me was very kind. My charge will be $... dollars but your service is well worth it. Thank you for your continued great service."