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1. Octave-An octave is a doubling or halving of frequency. 20Hz-40Hz is often considered the bottom octave. Each octave you add on the bottom requires that your speakers move four times as much air!
Submitted on Tuesday, May 20, 2008 6:19:28 AM

2. Octave:A doubling or halving of a frequency. (e.g., One octave higher than 100 Hz is 200 Hz and one octave lower than 100 Hz is 50 Hz.)
Submitted on Saturday, July 21, 2007 6:19:28 AM

3. Octave:
In audio, the interval between any two frequencies having a ratio of 2 to 1. One octave up from 100 Hz is 200 Hz, where one octave down from 100 Hz is 50 Hz. A harmonic is a doubling (2nd harmonic), tripling (3rd harmonic), quadrupling (4th Harmonic... etc) of a fundamental frequency. Musical instruments (with the exception of electronic synthesizers) do not create pure tones. The fundamental (main frequency) is combined with its harmonics at various levels to create the sonic signature, or timbre of that instrument.
Submitted on Saturday, February 16, 2008 6:19:28 AM

4. Octave
A doubling or halving of a frequency. (e.g., One octave higher than 100 Hz is 200 Hz and one octave lower than 100 Hz is 50 Hz.)
Submitted on Thursday, May 15, 2008 6:19:28 AM

5. Ohm-The measurement of electrical resistance and system impedance. It is a measure of the degree to which electrons are limited in both velocity and quantity in passing through a circuit. In Impedance measurements, this takes into account, the mechanical resistance inherent in the motion of transducers. The standard is usually 4 ohms for car audio and 8 ohms for home and commercial audio. Some specialty woofers may be rated at 16 ohms.
Submitted on Friday, January 04, 2008 6:19:28 AM

6. Ohm
Definition:A unit of electrical resistance or impedance.
Submitted on Friday, April 27, 2007 6:19:28 AM

7. Ohm
The basic unit of electrical resistance. (e.g., One ohm is defined as the resistance that causes one volt to drop for each amp flowing through the resistance.)
Submitted on Saturday, January 12, 2008 6:19:28 AM

8. Ohm:
The basic unit of electrical resistance. (e.g., One ohm is defined as the resistance that causes one volt to drop for each amp flowing through the resistance.)
Submitted on Saturday, February 17, 2007 6:19:28 AM

9. Ohm's Law:
The basic law of electric circuits. It states that the current [I] in amperes in a circuit is equal to the voltage [E] in volts divided by the resistance [R] in ohms; thus, I = E/R.
Submitted on Tuesday, November 28, 2006 6:19:28 AM

10. Ohm's Law:-The mathematical relationship between voltage, current, and resistance. It is named after George Ohm, it's discoverer. Ohm's law states that current volume in a conductor is directly proportional to the voltage flow across it and inversely proportional to its resistance. In general, this means that more voltage will produce more current, if resistance stays the same, but higher resistance will cause current to decrease if voltage stays the same. In mathmatical terms, V = I x R, where V is voltage, I is current, and R is resistance. Ohm's law is a description of electron behavior upon which virtually all understanding of electronics is based.
Submitted on Wednesday, January 31, 2007 6:19:28 AM

11. Omnidirectional-Literally, from all directions. In audio, microphones are said to be omnidirectional if they can detect sound with equal sensitivity from all directions. Speakers are omnidirectional if they produce sound pressure level that is the same without regard to the position of the listener vis a vis the axis of the driver or port; this tends to be the case with subwoofers and low frequency drivers. Low frequencies, in general, tend to be omni-directional, unlike high frequencies, where directionality increases with frequency.
Submitted on Saturday, August 30, 2008 6:19:28 AM

12. On Axis:
A listening experience which takes place with the ear precisely lined up with the central pressure axis of the emitter. Headphones are a normative example of this effect. Sitting directly in front of a speaker is another.
Submitted on Monday, November 26, 2007 6:19:28 AM

13. Op amp-(operational amplifier) An analog integrated circuit device having two opposite polarity inputs and one output; frequently used as a basic processing unit in the design of analog signal circuits.
Submitted on Saturday, July 19, 2008 6:19:28 AM

14. Orchestral climax-105 dB
Submitted on Monday, November 06, 2006 6:19:28 AM

15. Oscillator
Definition:A circuit that causes its output to vary periodically. (e.g., We used a sine wave oscillator to tune Ralph's woofer box.)
Submitted on Sunday, April 19, 2009 6:19:28 AM

16. Oscillator:-A circuit that causes its output to vary periodically. (e.g., We used a sine wave oscillator to tune Ralph's woofer box.)
Submitted on Wednesday, August 30, 2006 6:19:28 AM

17. Oscillator-A device which produces an alternating current or pulsating current or voltage at varying frequencies, electronically.
Submitted on Tuesday, June 12, 2007 6:19:28 AM

18. Out of Phase
Definition:When speakers are mounted in reverse polarity, i.e., one speaker is wired +/+ and -/- from the amp and the other is wired +/- and -/+. Bass response will be very thin due to cancellation.
Submitted on Sunday, August 13, 2006 6:19:28 AM

19. Output:
The sound level produced by a loudspeaker. The sound level produced by a loudspeaker.
Submitted on Sunday, March 11, 2007 6:19:28 AM

20. Output (Audio)
The high level (speaker) or line level (RCA) signals sent from one system component to another, or the high level signal from an amplifier to the system speakers.
Submitted on Friday, June 08, 2007 6:19:28 AM

21. Overload-A condition in which a system is given too high of an input level. A common cause of distortion or product failure.
Submitted on Friday, June 01, 2007 6:19:28 AM

22. Oversampling:
A technique where each sample from a data converter is sampled more than once, i.e., oversampled. This multiplication of samples permits digital filtering of the signal, thus reducing the need for sharp analog filters to control unwanted frequencies created when sampling a signal of a frequency higher than half the sampling rate.
Submitted on Thursday, September 21, 2006 6:19:28 AM

23. Overtone
Definition:Similar in concept to a harmonic. Overtones are sounds produced by an instrument (or sound source) that are higher in frequency than the fundamental frequency. They may or may not coincide with the frequencies of a harmonic series (harmonics), although they usually do. Harmonics are always musically related to a fundamental in that they are integer multiples of it. Overtones of a sound are often identical to its harmonics except the first overtone is considered the second harmonic because the first harmonic is the fundamental. Overtones are also sometimes called partials.
Submitted on Saturday, June 09, 2007 6:19:28 AM

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