DSP Selection for battery-powered project

Started by Bob in comp.dsp11 years ago 3 replies

I have a project that needs a battery-life of 16-18 hours on 2-3 standard AA cells. So we're talking about 150 mA, maybe. As for processing...

I have a project that needs a battery-life of 16-18 hours on 2-3 standard AA cells. So we're talking about 150 mA, maybe. As for processing load, it's not completely clear, but a reasonable top-end is about 30-50 MIPS, of which 50% are adds/subs, 24% multiplies, 25% shifts, and 1 % divisions. These were measured with a 24-bit, fixed-point implementation; if a 16-bit DSP were to be used, I...


Scalability of DSP Processors !

Started by prithvi in comp.dsp13 years ago

Hi everyone, can anyone tell me what does the scalability of DSP processors mean. is it related to the MIPS of processor with...

Hi everyone, can anyone tell me what does the scalability of DSP processors mean. is it related to the MIPS of processor with per instruction or related to functionality of the processor such as how much operations a procressor can perform. please reply, thanks


Scalability of DSP Processors !

Started by prithvi in comp.dsp13 years ago

Hi everyone, can anyone tell me what does the scalability of DSP processors mean. is it related to the MIPS of processor with...

Hi everyone, can anyone tell me what does the scalability of DSP processors mean. is it related to the MIPS of processor with per instruction or related to functionality of the processor such as how much operations a procressor can perform. please reply, thanks


Choosing a DSP for audio processing

Started by Jackson4 in comp.dsp11 years ago 12 replies

Hello all, My group is designing a small, inexpensive audio device (basically a PWM amp with variable/custom EQ processing), and we're looking...

Hello all, My group is designing a small, inexpensive audio device (basically a PWM amp with variable/custom EQ processing), and we're looking to select a DSP. I've perused datasheets from the majors, and could use some general advice. Our requirements - Inexpensive ($5-10 ballpark in quantity) 40 MIPS or so should be plenty if there are single-cycle MACs On-board program flash with co...


Real-time octave analysis

Started by Curl in comp.dsp15 years ago 6 replies

Hello ! I would like to perform ***real-time*** octave analysis with my C54x (100 Mips, audio signal @ 48kHz). Althought i already implement...

Hello ! I would like to perform ***real-time*** octave analysis with my C54x (100 Mips, audio signal @ 48kHz). Althought i already implement FFT, I will do it with IIR filtering. (I know the avantages of FIR decimator, but I dont think it will be usefull in this particular case). The "method" is to apply a band-pass for the higher octave, and decimate by 2 for the next octave. I already ...


Translations to French

Started by Carlos Moreno in comp.dsp13 years ago 2 replies

I have to write a one-page French abstract of my thesis, and I'm having trouble finding the French translation of several terms. If someone...

I have to write a one-page French abstract of my thesis, and I'm having trouble finding the French translation of several terms. If someone out there could help me out with the following terms: Vector Quantization Codebook (in the context of vector quantization) Lossy data compression Computing power (as in the CPU power, in MIPS/FLOPS, required to run certain app...


Scalability of DSP Processors !

Started by prithvi in comp.dsp13 years ago 1 reply

Hi everybody, can anyone tell me what does the scalability of DSP processors mean. is it related to the MIPS of processor with...

Hi everybody, can anyone tell me what does the scalability of DSP processors mean. is it related to the MIPS of processor with per instruction or related to functionality of the processor such as how much operations a procressor can perform. If any one have other issues relates to this feature of DSP Processors plz share with me. thanks


Software Defined Radio DSP choice / sizing

Started by Anonymous in comp.dsp12 years ago 15 replies

I'm working on a SDR design using the AD9874 to digitize the IF producing 280 Ksamples/sec and am trying to size the DSP. I'm leaning...

I'm working on a SDR design using the AD9874 to digitize the IF producing 280 Ksamples/sec and am trying to size the DSP. I'm leaning towards the ADSP-BF532 which is a fixed point DSP rated at 400 MIPS / 800 MMACS and is available in a LQFP package. I'd like to be able to handle everything from decoding standard shortwave SSB signals to broadcast FM stereo signals (including RDS). 1) A...


OFDM, Homeplug - reduce IFFT butterflys

Started by Zeph80 in comp.dsp13 years ago 2 replies

I have a question concering Homeplug and OFDM.What if had to be able to talk to Homeplug chips, BUT I needed very very low data rates like...

I have a question concering Homeplug and OFDM.What if had to be able to talk to Homeplug chips, BUT I needed very very low data rates like nothing more than 800 bps. So since I have such low data rate needs, and would need to work within the Homeplug standard but not use high MIPS and increase my costs.If the standard allows me to null sub-carriers which it does, would feeding those zeros to the...


TMS320VC33 or another floating point DSP

Started by Danne in comp.dsp14 years ago 21 replies

Hello I'm looking for a "smaller" floating point DSP (do not need so much MIPS/MFLOPS). The DSP should have onchip RAM (data) and...

Hello I'm looking for a "smaller" floating point DSP (do not need so much MIPS/MFLOPS). The DSP should have onchip RAM (data) and FLASH (program+data tables). A more important factor is the powers consume, it should be very low due to battery power. I have found TMS320VC33 but what are the alternatives? Any experience with the TMS320VC33 is welcome. BR Danne


IIR audio filterbank

Started by Robert Adams in comp.dsp8 years ago 19 replies

I am looking for a way to design an audio IIR filterbank. I need to split an audio signal into roughly 1/3 octave bands with 6th-order...

I am looking for a way to design an audio IIR filterbank. I need to split an audio signal into roughly 1/3 octave bands with 6th-order or 8th-order IIR bandpass filters and then sum them back together again with a ripple of +/- 1 dB. I can do a "seat-of-the-pants" design that works well until I approach Nyquist where it kind of falls apart. I have very limited MIPs so I can't do anything very...


lowest power for 100 MIPS/16bit, which DSP?

Started by Steven Sanders in comp.dsp16 years ago 7 replies

Hello DSP gurus worldwide! For a portable application, we`re targetting 100MIPS@16bit. Which DSP can achieve the lowest possible power...

Hello DSP gurus worldwide! For a portable application, we`re targetting 100MIPS@16bit. Which DSP can achieve the lowest possible power consumption for this app? We don`t care actually if it`s a 16 or 32 bit processor, we just want the lowest power consumption! Any hints welcome!!! Thanx in advance! greets, Steven


(Execution Cycles) Timing Budget for TI eZdspf2812

Started by vickykulkarni in comp.dsp13 years ago 2 replies

Hi guys I am designing different algorithms on the DSP to work in real time(filtering, fft etc). I wanted to know the best way to find out...

Hi guys I am designing different algorithms on the DSP to work in real time(filtering, fft etc). I wanted to know the best way to find out the number of execution cycles/processor time/mips each software algorithm takes. So what I need to figure out for example is if my sampling frequency is 2 MHz and my clock is 150MHz, what is the highest order filter and FFT i can design to run in real time....


Anyone using the Ultra Low Power audio DSP's in non audio applcations?

Started by steve in comp.dsp13 years ago 1 reply

I'm referring to the Ultra Low Power DSP's customized for hearing aids and headsets, they are very small, very fast processors and use...

I'm referring to the Ultra Low Power DSP's customized for hearing aids and headsets, they are very small, very fast processors and use very little power (0.05mW/MIPS) and run on 1.2 volts, quite impressive here is one http://www.amis.com/products/dsp/belasigna_200.html CoolFlux in another one, but they only license the cores www.coolfluxdsp.com I'm just becoming familar with these t...


lowest power for 16MIPS@16bit?

Started by Steven Sanders in comp.dsp15 years ago 1 reply

Hello DSP gurus! For a 16bit algorithm, requiring 16 MIPS (with hardware multiplier), we want the LEAST power consuming DSP/MCU! Does...

Hello DSP gurus! For a 16bit algorithm, requiring 16 MIPS (with hardware multiplier), we want the LEAST power consuming DSP/MCU! Does anything beat 2 MSP430 controllers in parallel (= 16 mW power consumption)? For instance, if you duty cycle a 300 MHz Blackfin DSP at 5.3% (=16MIPS) , do you achieve a lower power consumption? I`m worried about the large baseline power consumption and ...


Openings for DSP - Video professionals

Started by Savithaprakash in comp.dsp11 years ago

Openings for DSP - Video professionals Experience: 4 ? 15Yrs Development of video codecs (H.264,H.263, MPEG2/4, WMV, VC1, AVS, SVC)...

Openings for DSP - Video professionals Experience: 4 ? 15Yrs Development of video codecs (H.264,H.263, MPEG2/4, WMV, VC1, AVS, SVC) Porting and optimization of video codecs on DSP (TI, ADSP), RISC (ARM, MIPS), Multicore and configurable processors (Tenslica, Stretch) Research on Next generation Video Algorithm, Video analytic) Location: Bangalore. Client Profile Our client i