DSP Glossary | |
| DSP Glossary
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| There are 32 entries in the glossary. | |
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| Term | Definition |
| Absolute address | An address that is permanently assigned to a memory location. |
| Accumulator (ACC): | A register that temporarily stores the results of an arithmetic logic unit (ALU) operation and provides an input for subsequent ALU operations. The ACC is accessible in two halves: accumulator high (ACCH) and accumulator low (ACCL). |
| Accumulator buffer (ACCB): | A register that temporarily stores the contents of the accumulator (ACC). The ACCB has a direct path back to the arithmetic logic unit (ALU) and can be arithmetically or logically acted upon with the ACC. |
| Accumulator high byte (ACCH): | The most significant bits stored in the accumulator ACC). |
| Accumulator low byte (ACCL): | The least significant bits stored in the accumulator (ACC). |
| Actuator | A device to convert an electrical control signal to a physical action. Actuators may be used for flow-control valves, pumps, positioning drives, motors, switches, relays and meters. |
| Address | The logical location of program code or data stored in memory. |
| Address stage: | The second stage of the parallel processor’s fetch, address,execute (FAE) pipeline during which addresses are calculated and supplied to the crossbar. |
| Address unit: | Hardware on the parallel processor that computes a bit address during each cycle. Each parallel processor has two address units: a global address unit and a local address unit. |
| Addressing mode | The method by which an instruction interprets its operands to acquire the data it needs. |
| Analog Repeater | It is a telecommunications equipment used to boost and clarify analog signals on telephone lines. |
| Bandwidth | is the difference between the lowest and highest frequency components of a signal or device. |
| Benchmark | is a relative measure of the performance of a digital signal processor in a particular application. |
| Codec | Codec is an abbreviation for Coder-Decoder. It\'s an analog-to-digital (A/D) and digital-to-analog (D/A) converter for translating the signals from the outside world to digital, and back again. |
| Digital Signal Processor (DSP) | A Digital Signal Processor (DSP) is at the heart of products like high-density hard-disk drives, desktop videoconferencing and audio/video compression by rapidly processing large amounts of digital information. This technology, when used in conjunction with mixed-signal devices and embedded software, is referred to as a DSP Solution, and it collects, processes, compresses, transmits and displays analog and digital data. |
| Floating-Point Operations Per Second (FL | is a measurement of performance of capability assigned to a floating-point processor. It is usually noted as MFLOPS or Million FLOPS |
| Floating-Point Processor | A Floating-Point Processor is used in multiple calculations to obtain high precision with an unlimited dynamic range. |
| Frequency | is the number of cycles per unit of time, denoted by Hertz (Hz). One Hz equals one cycle per second. |
| Global Positioning Systems (GPS) | uses satellite signals to track the location or position of vehicles or vessels on earth. |
| Image Processing | is enhancing an image or extracting information or features from an image. |
| Memory | is your computer\'s physical work space that stores the instructions, programs and data needed to accomplish the tasks executed by the processor. |
| Mixed-Signal Device | collects analog signals and converts them into digital data to be processed. Once a DSP processes and compresses the digital data, a mixed-signal device decompresses, transmits and displays the digital data as either digital or analog signals. |
| Resolution | is a measure of accuracy or dynamic range of an A/D or D/A converter. |
| Sampling | is the process of converting continuous signals into discrete values. |
| Sampling Rate | is the rate at which an analog signal is sampled for conversion to and from the digital domain. The sampling rate is measured as the number of samples per unit of time. |
| TI Registration and Identification Syste | : uses radio frequency identification to electronically control, detect and track objects by manipulating radio signals. Applications include traffic management, logistics systems, antitheft devices and security systems. |
| Time Domain | The representation of the amplitude of a signal with respect to time. |
| To Transmit | It is to deliver information between two or more locations. Transmitted information occurs through media such as Local Area Networks/Wide Area Networks and cable, coax, fiber optics and twisted pair wires, in addition to satellites and radio or optical wireless devices. |
| Transducer | A piece of equipment that converts a physical signal into an electrical signal. |
| Twiddle Factor | The coefficients of the FFT algorithm, typically a ¾ sine table. |
| Glossary & Definitions | |