with the newer flash recorders I now have higher resolution and sample rate options then my older 44.1/16 PCM I realize I can record at lower...

with the newer flash recorders I now have higher resolution and sample rate options then my older 44.1/16 PCM I realize I can record at lower safer levels with the 24bit resolution but I was wondering if sampling at 96 or 88 and resampling to my final level of 44.1 after post processing has any advantage. -- Phil

Consider the Nyquist criterion for sampling a continuous=20 waveform - 2x bandwidth - then the Rayleigh resolution=20 principle - peaks must...

Consider the Nyquist criterion for sampling a continuous=20 waveform - 2x bandwidth - then the Rayleigh resolution=20 principle - peaks must separate by at least 1 wavelength. =20 Don't these look much analogous? =20 Especially as =CE=BB =3D 1/f Ruminating a bit more... Nyquist sampling can be=20 viewed as a mandate to sample each period, at least=20 twice. And, Rayleigh mandates that...

Is there really such a thing as a First Order Hold as you see in some textbooks? I have looked many times at DAC outputs and all I see are...

Is there really such a thing as a First Order Hold as you see in some textbooks? I have looked many times at DAC outputs and all I see are staircase type waveforms ie Zero-Order Holds. Also, with a high sampling rate the effect of the ZOH more or less vanishes - do we need to still analyse it? There is a phase shift of course which is important (-90 degrees at half sampling but this gets sma...

Hopefully some of you can point me to the solution of this problem. If I oversample a signal, I quantize it and then I reduce the sampling...

Hopefully some of you can point me to the solution of this problem. If I oversample a signal, I quantize it and then I reduce the sampling rate with a decimator by a factor M, I can improve the QSNR by a factor of log2(M). Nice and easy. But what if I lower the sampling rate using a fitting technique? I mean if I know how the signal is done and I retrieve some parameters out of it using a f...

Jim, Can you either stop intentially re-arranging the letters and spacings in the subject line of these posts ... or if it's unintentional,...

Jim, Can you either stop intentially re-arranging the letters and spacings in the subject line of these posts ... or if it's unintentional, fix your usenet posting application so it stops doing so? It's a little disorientating to have a thread breaking off into 5 or 6 different permutations within the group ( appears to be localized to each of your replies ). Regards, Robert jim ...

Hello, Two things I want to do with my EZ Kit. Firstly I want to goose the sampling frequency up to 96KHz. Secondly I would like to use...

Hello, Two things I want to do with my EZ Kit. Firstly I want to goose the sampling frequency up to 96KHz. Secondly I would like to use the EZ Kit as a USB soundcard. Regarding goosing the sample frequency; I thought this was going to be easy since there's a sampling frequency setting jumper on the board. Doh!, That is, until I discovered that it's only for the auxilliary DAC. ...

I want to sample a 1MHz RF signal at 20kHz (i.e., IF/Bandpass sampling for downconversion. Is there any limiting factor on the ADC that I need...

I want to sample a 1MHz RF signal at 20kHz (i.e., IF/Bandpass sampling for downconversion. Is there any limiting factor on the ADC that I need to consider? e.g., does the ADC need special circuit? or small sample-and-hold delay time? CJLam

Hi, I have a bandpass signal centered around 40kHz. It's pretty narrow in bandwidth, around 1ms in duration. I'm bandpass-sampling this...

Hi, I have a bandpass signal centered around 40kHz. It's pretty narrow in bandwidth, around 1ms in duration. I'm bandpass-sampling this signal by fs = 38kHz, and hence mixing it down to 2kHz---for the time being I'm experimenting with this. Now this is where I'm getting a bit confused. When I view the acquired waveform, I see two roughly cycles within an envelop that spans approximately 40...

SACD uses 1-bit with a super-high sampling rate. Could something similar be done using 1 Hz sampling with a super-wide bit resolution?

SACD uses 1-bit with a super-high sampling rate. Could something similar be done using 1 Hz sampling with a super-wide bit resolution?

Hello! I am interested in FFT and sampling and have just started a project at home, which involves programming and dsp/signal...

Hello! I am interested in FFT and sampling and have just started a project at home, which involves programming and dsp/signal theory/sampling. My setup is a shortwave radio and I want to decode some simple 50 baud FSK signals in an application that I am currently building. So far I have successfully sampled an audio signal, so I have raw sample data from my sound card, in chunks of for e...

My terminology may be wrong, which might explain why I am having such difficulty finding literature on the subject. I have a symmetric LPF FIR...

My terminology may be wrong, which might explain why I am having such difficulty finding literature on the subject. I have a symmetric LPF FIR filter (Type II) with N taps. I take K samples (K > > N), pause for a period of time, and then take K more samples...this process repeats indefinitely. The discontinuity in sampling worries me. When sampling resumes, I figure that my options are

Hello, i am looking for decimation and interpolation technique in order to, given a sampling rate fs, obtain a new sampling rate like...

Hello, i am looking for decimation and interpolation technique in order to, given a sampling rate fs, obtain a new sampling rate like (a/b)*fs. A way to to do is to decimate and then use linear interpolation... Is there some other ways (documents) to do this ? If so, have you got some book or url ? Thanks

I've sortof been following several threads concerned with irregular sampling of data and various noise effects. I think I might benefit from...

I've sortof been following several threads concerned with irregular sampling of data and various noise effects. I think I might benefit from a *QUALITATIVE* discussion of how to approach a problem which APPEARS to be outside realm of DSP. [The problem is "real" but ... ] QUESTION: What is fuel mileage of a class of vehicles. AVAILABLE DATA (and possible error sources) [source is cr...

hi, could anybody give me references on random sampling theory, i.e theory for signals which are sampled at random intervals of...

hi, could anybody give me references on random sampling theory, i.e theory for signals which are sampled at random intervals of time. regards amar

Revised after peer review, approached with a little less haste So... Sampling with a period of T is given by (after asciification) as...

Revised after peer review, approached with a little less haste So... Sampling with a period of T is given by (after asciification) as .. (1/T)sum (n : 0, inf)(d(t-nT) * f(nT) ) ... with * representing multiplication and not convolution as we are still in the time domain. However, (and this is where my protest came in having previously fully revised Fourier, Laplace, Butterworth...

Hello, I am writing a digital filter but it seems that according to the sampling frequency my filter should change ... how does...

Hello, I am writing a digital filter but it seems that according to the sampling frequency my filter should change ... how does this happens ? being a digital filter there is no such a thing as sampling frequency, right ? One more thing ... it seems that the cut off frequency should affect my filter too ... the cut off frequency is the bandwidth of the transmitting c...

Hi, I'm looking for someone familiar with the Singer acceleration model. Could such a person explain to me why Singer makes no assumption...

Hi, I'm looking for someone familiar with the Singer acceleration model. Could such a person explain to me why Singer makes no assumption on the sampling rate and the nyquist theorem? How can he say things such as the correlation coefficient goes to infinity, when it is actually bounded by 1/2T where T is the sampling period? This is driving me bananas!! thnaks This message was se...

Hi all ! I'm trying to design a digital graphical equalizer (8 bands), which can deal with many samlping frequency... so it should be able to...

Hi all ! I'm trying to design a digital graphical equalizer (8 bands), which can deal with many samlping frequency... so it should be able to equalize let say either in 48k, 44.1k, 22k, 32k... in the same way. So my question is ... do I have to design an equalizer for each sampling frequency or is there a good (and memory coefficent table saving) trick ? I'm think of maybe designing t...

Which publication did Shannon prove the Sampling Theorem in? Thanks

Which publication did Shannon prove the Sampling Theorem in? Thanks

Hello everyone, I am new to dsp and working on a project where I need to take 1000 8-bit samples per second. Each sample will be at 1 of 11...

Hello everyone, I am new to dsp and working on a project where I need to take 1000 8-bit samples per second. Each sample will be at 1 of 11 predefined frequencies. My question is, is it possible to detect frequencies at a sampling rate of 1 per millisecond. (1000 samples per second). I would like to use a computer to do this rather than any hardware. Any help would be greatly appreciate...