Digital signal processor

DSPDSPsdigital signal processorsdigital signal processingDigital Signal Processor (DSP)digital signal-processingDSP chipssignal processorsADSP-2100digital signal processor hardware
A digital signal processor (DSP) is a specialized microprocessor (or a SIP block) chip, with its architecture optimized for the operational needs of digital signal processing.wikipedia
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Digital signal processing

DSPsignal processingdigital
A digital signal processor (DSP) is a specialized microprocessor (or a SIP block) chip, with its architecture optimized for the operational needs of digital signal processing. Prior to the advent of stand-alone digital signal processor (DSP) chips, early digital signal processing applications were typically implemented using bit-slice chips.
Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations.

Audio signal processing

audio processoraudio processingsound processing
They are widely used in audio signal processing, telecommunications, digital image processing, radar, sonar and speech recognition systems, and in common consumer electronic devices such as mobile phones, disk drives and high-definition television (HDTV) products.
This permits signal processing using digital circuits such as digital signal processors, microprocessors and general-purpose computers.

Digital image processing

image processingimageprocessing
They are widely used in audio signal processing, telecommunications, digital image processing, radar, sonar and speech recognition systems, and in common consumer electronic devices such as mobile phones, disk drives and high-definition television (HDTV) products.
MOS integrated circuit technology was the basis for the first single-chip microprocessors and microcontrollers in the early 1970s, and then the first single-chip digital signal processor (DSP) chips in the late 1970s.

Multiply–accumulate operation

fused multiply–addmultiply–accumulateMAC
Examples of these multipliers were a series from TRW including the TDC1008 and TDC1010, some of which included an accumulator, providing the requisite multiply–accumulate (MAC) function.
When done with floating point numbers, it might be performed with two roundings (typical in many DSPs), or with a single rounding.

Microprocessor

microprocessorsprocessorprocessors
A digital signal processor (DSP) is a specialized microprocessor (or a SIP block) chip, with its architecture optimized for the operational needs of digital signal processing.
Taken as a whole, the average price for a microprocessor, microcontroller, or DSP is just over US$6 2002.

Signal processing

signal analysissignalsignal processor
Electronic signal processing was revolutionized in the 1970s by the wide adoption of the MOSFET (metal-oxide-semiconductor field-effect transistor, or MOS transistor), which was originally invented by Mohamed M. Atalla and Dawon Kahng in 1959.
MOS integrated circuit technology was the basis for the first single-chip microprocessors and microcontrollers in the early 1970s, and then the first single-chip digital signal processor (DSP) in 1979.

Integrated circuit

integrated circuitsmicrochipchip
Prior to the advent of stand-alone digital signal processor (DSP) chips, early digital signal processing applications were typically implemented using bit-slice chips.
These digital ICs, typically microprocessors, DSPs, and microcontrollers, work using boolean algebra to process "one" and "zero" signals.

Texas Instruments LPC Speech Chips

TMS5220TMS5110TMS5100
Two years later in 1978, they produced the first Speak & Spell, with the technological centerpiece being the TMS5100, the industry's first digital signal processor.
The Texas Instruments LPC Speech Chips are a series of speech synthesizer digital signal processor integrated circuits created by Texas Instruments beginning in 1978.

Discrete cosine transform

DCTiDCTinverse discrete cosine transform
DSPs often also implement data compression technology, with the discrete cosine transform (DCT) in particular being a widely used compression technology in DSPs.
The DCT is widely implemented in digital signal processors (DSP), as well as digital signal processing software.

Texas Instruments TMS320

TMS320Texas Instruments TMS32010TMS320DA25x
Another DSP produced by Texas Instruments (TI), the TMS32010 presented in 1983, proved to be an even bigger success.
Texas Instruments TMS320 is a blanket name for a series of digital signal processors (DSPs) from Texas Instruments.

Motorola 56000

Motorola 5600156001Motorola 56002
Members of this generation were for example the AT&T DSP16A or the Motorola 56000.
The Motorola DSP56000 (also known as 56K) is a family of digital signal processor (DSP) chips produced by Motorola Semiconductor (later known as Freescale Semiconductor, now acquired by NXP) starting in 1986 and is still being produced in more advanced models in the 2010s.

Harvard architecture

HarvardHarvard computer architectureHarvard memory architecture
DSPs are usually optimized for streaming data and use special memory architectures that are able to fetch multiple data or instructions at the same time, such as the Harvard architecture or Modified von Neumann architecture, which use separate program and data memories (sometimes even concurrent access on multiple data buses).

NEC µPD7720

NEC µPD77C25NEC µPD96050µPD7720/µPD77C25
In 1980, the first stand-alone, complete DSPs – Nippon Electric Corporation's NEC µPD7720 and AT&T's DSP1 – were presented at the International Solid-State Circuits Conference '80.
The NEC μPD7720 is the name of fixed point digital signal processors from NEC (currently Renesas Electronics).

AT&T DSP1

DSP1
In 1980, the first stand-alone, complete DSPs – Nippon Electric Corporation's NEC µPD7720 and AT&T's DSP1 – were presented at the International Solid-State Circuits Conference '80.
The AT&T DSP1 was a pioneering digital signal processor (DSP) created by Bell Labs.

SIMD

single instruction, multiple dataSingle Instruction Multiple DataSIMD lanes
Some models support multiple multipliers and ALUs, SIMD instructions and audio processing-specific components and peripherals.
The PlayStation 2 was unusual in that one of its vector-float units could function as an autonomous DSP executing its own instruction stream, or as a coprocessor driven by ordinary CPU instructions.

NEC

NEC CorporationNEC Home ElectronicsNEC Avenue
In 1980, the first stand-alone, complete DSPs – Nippon Electric Corporation's NEC µPD7720 and AT&T's DSP1 – were presented at the International Solid-State Circuits Conference '80.
In 1980, NEC created the first digital signal processor, the NEC µPD7710.

Blackfin

Analog Devices Blackfin
The Blackfin family of embedded digital signal processors combine the features of a DSP with those of a general use processor.
The processors have built-in, fixed-point digital signal processor (DSP) functionality supplied by 16-bit multiply–accumulates (MACs), accompanied on-chip by a microcontroller.

Ceva (semiconductor company)

CEVA, Inc.CEVACeva Inc
CEVA, Inc. produces and licenses three distinct families of DSPs.
CEVA is a publicly listed semiconductor intellectual property (IP) company, headquartered in Mountain View, California and specializes in digital signal processor (DSP) technology.

Super Harvard Architecture Single-Chip Computer

SHARC
Analog Devices produce the SHARC-based DSP and range in performance from 66 MHz/198 MFLOPS (million floating-point operations per second) to 400 MHz/2400 MFLOPS.
The Super Harvard Architecture Single-Chip Computer (SHARC) is a high performance floating-point and fixed-point DSP from Analog Devices.

Direct memory access

DMADMA controllerDMA channel
In addition, extensive use of DMA is employed.
Processors with scratchpad memory and DMA (such as digital signal processors and the Cell processor) may benefit from software overlapping DMA memory operations with processing, via double buffering or multibuffering.

Intel

Intel CorporationIntel Corp.Intel Inside
In 1979, Intel released the 2920 as an "analog signal processor".

Software-defined radio

software radioSoftware Defined RadioSDR
The CEVA-XC DSP family targets Software-defined Radio (SDR) modem designs and leverages a unique combination of VLIW and Vector architectures with 32 16-bit MACs.
A digital signal processor would read the converter, and then its software would transform the stream of data from the converter to any other form the application requires.

OMAP

Texas Instruments OMAPTI OMAPOMAP 3
For example, the OMAP3 processors include an ARM Cortex-A8 and C6000 DSP.
Earlier OMAP variants commonly featured a variant of the Texas Instruments TMS320 series digital signal processor.

Analog-to-digital converter

ADCanalog to digital converteranalog-to-digital conversion
DCTs are widely used for encoding, decoding, video coding, audio coding, multiplexing, control signals, signaling, analog-to-digital conversion, formatting luminance and color differences, and color formats such as YUV444 and YUV411.
Finally, a digital signal processor rearranges the samples and removes any distortions added by the frontend to yield the binary data that is the digital representation of the original analog signal.

TriMedia (mediaprocessor)

TriMediaNXP TriMedia
NXP Semiconductors produce DSPs based on TriMedia VLIW technology, optimized for audio and video processing.
TriMedia is a Harvard architecture CPU that features many DSP and SIMD operations to efficiently process audio and video data streams.