All-Digital Amplifier is 1st New Class in 20 Years.Business/Technology Editors BOSTON--(BUSINESS WIRE)--March 27, 2000 JAM Technologies announced the world's first high quality, high power, all-digital amplification technology that generates output voltage equaling 300-400% of the input voltage, using no transformers or DC/DC converters. REVA REVA Risa En Voz Alta (Spanish: laugh out loud) REVA Recommended Vehicle Adjustment (TM) True Fidelity(R) is the only low-cost, LSI-based amplification approach that reproduces sixteen bits or more of digital audio resolution at the output stage. The result of seventeen years of development, REVA True Fidelity is the first Class J rail-exceeding, variable amplitude amplitude (ăm`plĭt  d'), in physics, maximum displacement from a zero value or rest position. switching amplifier A switching amplifier or class-D amplifier is a electronic amplifier where the active devices (especially in the output stage) are operated in on/off mode (i.e., as switches). The term "Class-D" is often assumed to mean "digital" amplifier, which is not correct. . REVA True Fidelity is being implemented first in the computer industry because it produces continuous average power of up to 50 watts per channel into 4 ohms or 25 watts per channel into 8 ohms, using only the computer's standard, internal 5-volt power supply. High resolution audio is now possible in notebook and desktop computers. Whereas all other mainstream digital audio amplification approaches require at least one conversion to analog format, REVA True Fidelity defies convention by accepting a digital data stream, amplifying it digitally, and sending the precisely filtered, all-digital result out to any conventional, non-self-powered speakers. "Resolution degradation caused by switching delays is a primary reason that other companies' attempts at digital amplification produce distortion," said Larry Kirn, Chief Technology Officer. REVA True Fidelity avoids the problems of silicon latency (1) The time between initiating a request in the computer and receiving the answer. Data latency may refer to the time between a query and the results arriving at the screen or the time between initiating a transaction that modifies one or more databases and its completion. associated with Class D amplifiers An audio amplifier that works in the digital domain. It generates the equivalent analog output for the speakers by using pulse width modulation (PWM) or pulse density modulation (PDM) rather than the traditional digital-to-analog conversion. See PWM and PDM. , and releases the natural richness and warmth that have always lain dormant Latent; inactive; silent. That which is dormant is not used, asserted, or enforced. A dormant partner is a member of a partnership who has a financial interest yet is silent, in that he or she takes no control over the business. in digital recordings. Some of the unique performance parameters of REVA True Fidelity in desktop computers are: input voltage that is as low as 3.3 volts, maximum peak output voltage of plus or minus 20 volts using only a standard 5-volt power supply, about 90% efficiency, low distortion at full power, quiescent quiescent at rest; latent; the G0 stage of the cell cycle. noise floor of at least -96 dB, and full-power bandwidth of 0 Hz to 20 kHz. JAM can be reached via Web (www.jam-tech.com), e-mail (marketing@jam-tech.com), and telephone (617-JAM-8666). |
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