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Started by Asahi Kasei Micro makes dsp ICs such as the AK7755EN. On the website https://www.akm.com/eu/en/products/audio-voice-dsp/lineup-audio-voice-processor/ak7755en/ there...
2-FSK eye diagram - optimal sampling sharp transitions
Started by 1 year ago●4 replies●latest reply 1 year ago●202 viewsHi folks,I have ta analyse a signal transmitted in a burst mode in UHF and I have no apriori about it.The signal seams to be transmitted using a basic 2-FSK modulation.I...
How to avoid harmonic distortions in a DAC?
Started by 1 year ago●4 replies●latest reply 1 year ago●218 viewsI have a DAC which is assumed to be nonlinear, such that it produces unwanted harmonic distortions at integer multiples of the input frequencies. Any other nonlinear...
C code simulation of DSP fixed-point operations with overflow and saturation
Started by 1 year ago●9 replies●latest reply 1 year ago●260 viewsAll-Does anyone have a link to old Texas Inst C code that simulated what their fixed-point DSPs did with overflow and saturation with arithmetic operations (add,...
Simulating multipath fading channel in Python
Started by 1 year ago●2 replies●latest reply 1 year ago●412 viewsHello!I'm trying to figure out how to simulate a multipath fading channel (I'd like to have both a Rayleigh and a Rician channel, no Doppler to simplify things)...
Design low pass filter and decimation stages, how to?
Started by 1 year ago●1 reply●latest reply 1 year ago●239 viewsHi to all!I usually see 24-bit digitizers giving output sample rate at 50, 100, 200 samples per second, selectable by user.Taking a look to code I can see input...
Quantizing the feedback coefficient in the Goertzel algorithm
Started by 1 year ago●2 replies●latest reply 1 year ago●178 viewsThe value of the feedback coefficient in the Goertzel algorithm it given by:c = 2*cos( 2*pi*k/N); where k is the bin number and N is the number of points.Here...
Effect of decimation, tuning (mixing) on phase noise
Started by 1 year ago●9 replies●latest reply 1 year ago●228 viewsIf I build an analog receiver using a DDS where the DDS is my local oscillator (LO), based on a reference oscillator with phase noise ℒ(n), as I decrease the...
Adding 45 degrees phase shift to a FIR bandpass
Started by 8 years ago●15 replies●latest reply 1 year ago●2191 viewsDear sirs, I have a question regarding the calculation of filter taps for a FIR bandpass filter with additional phase shift of approx. 45 degrees. Background: shortwave...
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