Is there a better way to implement IIR filter?464 (8/7/2011 3:56:41 PM) comp.dsp Hi, all Currently, I'm working on otpimization of speech processing. Previously, my work focuses on video codec, so I have liittle experience of speech processing. In speech processing, IIR filters ... jogging
antialiasing argument in function resize1197 (5/27/2010 2:28:29 AM) comp.soft-sys.matlab Hi, all
I am using the function resize and trace it into the resize.m file.
I find that there is an argument called antialiasing.
I hope to use bilinear method to interpolate the image, but if
questions about x862250 (12/29/2009 7:29:25 AM) comp.arch Hi,all
I have no experience in x86 assembly coding previously, but may need
to optimize code on PC.
So I begin to read the manuals doawloaded from Intel's website.
In the diagram of intel core microarchit... jogging
shift direction using correlation2139 (12/23/2009 11:18:08 AM) comp.soft-sys.matlab In case 1, signal2 should be right shift by 2 to be same as signal1.
In case 2, signal2 should be left shift by 2 to be same as signal1.
For the ease of programming, I expect dshift can have a sign to
shift direction using correlation2225 (12/23/2009 11:16:48 AM) comp.dsp Hi,
I am trying to determine the signal shift by correlation method.
The following is the matlab code:
Signal1 = zeros(1,32);
Signal1(3:13) = 8;
Signal2 = zeros(1,32);
Signal2(1:11) = 8;
question about nonaligned memory access50103 (9/16/2009 3:51:12 PM) comp.arch Hi, Nowadays I am working on optimization on DSP. I encounter nonaligned memory access. I have several questions about it. First, why some processors don't support nonaligned memory access? To simplify th... jogging
cache miss on x866237 (8/14/2009 11:55:56 AM) comp.arch Hi, Recently I learned that cache miss can result in several hundreds cycles. I am a little confused. Most of my work focuses on DSP. If this happen on DSP, the penalty is not costly, about several tens ... jogging
the performance of x86 processor and DSP3848 (8/6/2009 3:35:40 PM) comp.dsp Hi, I am a engineer and have done much work on DSPs. Compared to x86 processor, DSP has low power consumption and is a SOC, so it is a ideal choice for portable equipments. Before I have worked on a board ... jogging
memory access performance on C64x+046 (5/12/2009 6:50:34 AM) comp.dsp Hi, I am reading the spru862b of TMS320C64x+ DSP Cache User's Guide.L1D miss penalty is 12.5 cycles. I am a little confused why the penalty is so large though L2 operates in the same frequency of L1D. For ... joggingsong
Instruction Cache Optimisations548 (11/14/2007 2:58:15 PM) comp.dsp Hi, in the recent days I was reading an article describing how to optimise instruction cache behavior by modifying the placement of functions in memory. The article can be found under: http://www.dspdesignli... plfriko(499)
different data width?358 (11/20/2007 3:51:16 AM) comp.dsp Hi, all In the BDTI's pocket guide, there is a column, Data Width, which divides DSPs into different groups. For TMS320C64x+, the data width is 8/16 bits. For blackfin, the data width is 16 bits. Registers i... joggingsong(102)
H.264 or MPEG-4 for Surveillance?554 (12/19/2007 2:53:01 PM) comp.dsp Hello, Suppose you have a surveillance project on which two 4-CIF NTSC streams (704 x 480) @ 15 fps have to be encoded for network streaming and for storage, and that the network bandwidth is up to 2 Mbps. Al... jaime.aranguren(90)
the pipeline of C64x+444 (3/23/2009 7:38:00 AM) comp.dsp Hi,all I am a DSP engineer for a few years. But till recently I have a chance of programming on C64x+ from TI. One difference of C64x+ from other DSPs I have used is the pipeline. The execution stage of pipe... joggingsong(102)
the performance of x86 processor and DSP3848 (8/6/2009 3:35:40 PM) comp.dsp Hi, I am a engineer and have done much work on DSPs. Compared to x86 processor, DSP has low power consumption and is a SOC, so it is a ideal choice for portable equipments. Before I have worked on a board ... joggingsong(102)